class Zone:
def __init__(self, image, initialField, initialText):
frm = Frame(root)
frm.config(background="white")
self.image = PhotoImage(format='gif',data=images[image.upper()])
self.imageDimmed = PhotoImage(format='gif',data=images[image])
self.img = Label(frm)
self.img.config(borderwidth=0)
self.img.pack(side = "left")
self.fld = Text(frm, **fieldParams)
self.initScrollText(frm,self.fld,initialField)
frm = Frame(root)
self.txt = Text(frm, **textParams)
self.initScrollText(frm,self.txt,initialText)
for i in range(2):
self.txt.tag_config(colors[i], background = colors[i])
self.txt.tag_config("emph"+colors[i], foreground = emphColors[i])
def initScrollText(self,frm,txt,contents):
scl = Scrollbar(frm)
scl.config(command = txt.yview)
scl.pack(side="right",fill="y")
txt.pack(side = "left", expand=True, fill="x")
txt.config(yscrollcommand = scl.set)
txt.insert("1.0",contents)
frm.pack(fill = "x")
Frame(height=2, bd=1, relief="ridge").pack(fill="x")
def refresh(self):
self.colorCycle = itertools.cycle(colors)
try:
self.substitute()
self.img.config(image = self.image)
except re.error:
self.img.config(image = self.imageDimmed)
class Zone:
def __init__(self, image, initialField, initialText):
frm = Frame(root)
frm.config(background="white")
self.image = PhotoImage(format="gif", data=images[image.upper()])
self.imageDimmed = PhotoImage(format="gif", data=images[image])
self.img = Label(frm)
self.img.config(borderwidth=0)
self.img.pack(side="left")
self.fld = Text(frm, **fieldParams)
self.initScrollText(frm, self.fld, initialField)
frm = Frame(root)
self.txt = Text(frm, **textParams)
self.initScrollText(frm, self.txt, initialText)
for i in range(2):
self.txt.tag_config(colors[i], background=colors[i])
self.txt.tag_config("emph" + colors[i], foreground=emphColors[i])
def initScrollText(self, frm, txt, contents):
scl = Scrollbar(frm)
scl.config(command=txt.yview)
scl.pack(side="right", fill="y")
txt.pack(side="left", expand=True, fill="x")
txt.config(yscrollcommand=scl.set)
txt.insert("1.0", contents)
frm.pack(fill="x")
Frame(height=2, bd=1, relief="ridge").pack(fill="x")
def refresh(self):
self.colorCycle = itertools.cycle(colors)
try:
self.substitute()
self.img.config(image=self.image)
except re.error:
self.img.config(image=self.imageDimmed)
class Statusbar(GUIFrame):
def __init__(self, *args, **kw):
GUIFrame.__init__(self, *args, **kw)
# Empty status bar still must get its space in parent widget.
self.padding = Label(self)
self.padding.pack(fill=FILL_X, expand=1, side=SIDE_RIGHT)
def _gen_label(self, string_var, **lb_args):
return VarLabel(self,
bd=1,
relief=RELIEF_SUNKEN,
anchor=ANCHOR_W,
textvariable=string_var,
**lb_args)
def repack(self, widget, side):
""" Original 'pack' method adds widgets from the `side` of the frame to
its center. E.g. a new widget packed with flag `RIGHT` is appended at the left
of any other widget added to the RIGHT side before it. I.e. to add a new widget
at the right (left) of any other, all packed widgets must be repacked and
the new widget must be added before them.
This method also takes into account padding label.
"""
slaves = list(self.pack_slaves())
sides = [side]
for slave in slaves:
sides.append(pack_info(slave)["side"])
slave.pack_forget()
slaves.insert(0, widget)
for slave, side, junk in zip(slaves, sides, range(0, len(slaves) - 1)):
slave.pack(fill=FILL_X, side=side)
self.padding.pack(fill=FILL_X, expand=1, side=SIDE_RIGHT)
def right(self, string_var, **lb_args):
lb = self._gen_label(string_var, **lb_args)
self.repack(lb, SIDE_RIGHT)
return lb
def left(self, string_var, **lb_args):
lb = self._gen_label(string_var, **lb_args)
self.repack(lb, SIDE_LEFT)
return lb
def _add_grids(self):
'''Create UI containers for the player grids.'''
self.my_grid_frame = PlayerGridFrame(self)
self.my_grid_frame.place(x=self.X_PADDING + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING)
l1 = Label(self.my_grid_frame, text="Your Grid")
l1.pack()
self.my_grid = ShipGrid(self.my_grid_frame, True)
self.my_grid.pack(side=LEFT, pady=20)
self.their_grid_frame = PlayerGridFrame(self)
self.their_grid_frame.place(x=self.my_grid.size + self.X_PADDING * 2 + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING)
self.their_grid_label = Label(self.their_grid_frame, text="Opponent's Grid")
self.their_grid_label.pack()
self.their_grid = ShipGrid(self.their_grid_frame, False)
self.their_grid.pack(side=LEFT, pady=20)
self._add_grid_events()
def show_qr(path):
import platform
try:
from six.moves.tkinter import Tk, Label
except ImportError:
raise SystemError('缺少Tkinter模块, 可使用sudo pip install Tkinter尝试安装')
try:
from PIL import ImageTk, Image
except ImportError:
raise SystemError('缺少PIL模块, 可使用sudo pip install PIL尝试安装')
system = platform.system()
if system == 'Darwin': # 如果是Mac OS X
img = Image.open(path)
img.show()
else:
root = Tk()
img = ImageTk.PhotoImage(Image.open(path))
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
root.mainloop()
def _add_grids(self):
'''Create UI containers for the player grids.'''
self.my_grid_frame = PlayerGridFrame(self)
self.my_grid_frame.place(x=self.X_PADDING + self.SHIP_PANEL_WIDTH,
y=self.Y_PADDING)
l1 = Label(self.my_grid_frame, text="Your Grid")
l1.pack()
self.my_grid = ShipGrid(self.my_grid_frame, True)
self.my_grid.pack(side=LEFT, pady=20)
self.their_grid_frame = PlayerGridFrame(self)
self.their_grid_frame.place(x=self.my_grid.size + self.X_PADDING * 2 +
self.SHIP_PANEL_WIDTH,
y=self.Y_PADDING)
self.their_grid_label = Label(self.their_grid_frame,
text="Opponent's Grid")
self.their_grid_label.pack()
self.their_grid = ShipGrid(self.their_grid_frame, False)
self.their_grid.pack(side=LEFT, pady=20)
self._add_grid_events()
def show_qr(path):
import platform
try:
from six.moves.tkinter import Tk, Label
except ImportError:
raise SystemError('缺少Tkinter模块, 可使用sudo pip install Tkinter尝试安装')
try:
from PIL import ImageTk, Image
except ImportError:
raise SystemError('缺少PIL模块, 可使用sudo pip install PIL尝试安装')
system = platform.system()
if system == 'Darwin': # 如果是Mac OS X
img = Image.open(path)
img.show()
else:
root = Tk()
img = ImageTk.PhotoImage(
Image.open(path)
)
panel = Label(root, image=img)
panel.pack(side="bottom", fill="both", expand="yes")
root.mainloop()
class LintGui(object):
"""Build and control a window to interact with pylint"""
def __init__(self, root=None):
"""init"""
self.root = root or Tk()
self.root.title('Pylint')
#reporter
self.reporter = None
#message queue for output from reporter
self.msg_queue = six.moves.queue.Queue()
self.msgs = []
self.visible_msgs = []
self.filenames = []
self.rating = StringVar()
self.tabs = {}
self.report_stream = BasicStream(self)
#gui objects
self.lb_messages = None
self.showhistory = None
self.results = None
self.btnRun = None
self.information_box = None
self.convention_box = None
self.refactor_box = None
self.warning_box = None
self.error_box = None
self.fatal_box = None
self.txtModule = None
self.status = None
self.msg_type_dict = None
self.init_gui()
def init_gui(self):
"""init helper"""
window = PanedWindow(self.root, orient="vertical")
window.pack(side=TOP, fill=BOTH, expand=True)
top_pane = Frame(window)
window.add(top_pane)
mid_pane = Frame(window)
window.add(mid_pane)
bottom_pane = Frame(window)
window.add(bottom_pane)
#setting up frames
top_frame = Frame(top_pane)
mid_frame = Frame(top_pane)
history_frame = Frame(top_pane)
radio_frame = Frame(mid_pane)
rating_frame = Frame(mid_pane)
res_frame = Frame(mid_pane)
check_frame = Frame(bottom_pane)
msg_frame = Frame(bottom_pane)
btn_frame = Frame(bottom_pane)
top_frame.pack(side=TOP, fill=X)
mid_frame.pack(side=TOP, fill=X)
history_frame.pack(side=TOP, fill=BOTH, expand=True)
radio_frame.pack(side=TOP, fill=X)
rating_frame.pack(side=TOP, fill=X)
res_frame.pack(side=TOP, fill=BOTH, expand=True)
check_frame.pack(side=TOP, fill=X)
msg_frame.pack(side=TOP, fill=BOTH, expand=True)
btn_frame.pack(side=TOP, fill=X)
# Binding F5 application-wide to run lint
self.root.bind('<F5>', self.run_lint)
#Message ListBox
rightscrollbar = Scrollbar(msg_frame)
rightscrollbar.pack(side=RIGHT, fill=Y)
bottomscrollbar = Scrollbar(msg_frame, orient=HORIZONTAL)
bottomscrollbar.pack(side=BOTTOM, fill=X)
self.lb_messages = Listbox(
msg_frame,
yscrollcommand=rightscrollbar.set,
xscrollcommand=bottomscrollbar.set,
bg="white")
self.lb_messages.bind("<Double-Button-1>", self.show_sourcefile)
self.lb_messages.pack(expand=True, fill=BOTH)
rightscrollbar.config(command=self.lb_messages.yview)
bottomscrollbar.config(command=self.lb_messages.xview)
#History ListBoxes
rightscrollbar2 = Scrollbar(history_frame)
rightscrollbar2.pack(side=RIGHT, fill=Y)
bottomscrollbar2 = Scrollbar(history_frame, orient=HORIZONTAL)
bottomscrollbar2.pack(side=BOTTOM, fill=X)
self.showhistory = Listbox(
history_frame,
yscrollcommand=rightscrollbar2.set,
xscrollcommand=bottomscrollbar2.set,
bg="white")
self.showhistory.pack(expand=True, fill=BOTH)
rightscrollbar2.config(command=self.showhistory.yview)
bottomscrollbar2.config(command=self.showhistory.xview)
self.showhistory.bind('<Double-Button-1>', self.select_recent_file)
self.set_history_window()
#status bar
self.status = Label(self.root, text="", bd=1, relief=SUNKEN, anchor=W)
self.status.pack(side=BOTTOM, fill=X)
#labelbl_ratingls
lbl_rating_label = Label(rating_frame, text='Rating:')
lbl_rating_label.pack(side=LEFT)
lbl_rating = Label(rating_frame, textvariable=self.rating)
lbl_rating.pack(side=LEFT)
Label(mid_frame, text='Recently Used:').pack(side=LEFT)
Label(top_frame, text='Module or package').pack(side=LEFT)
#file textbox
self.txt_module = Entry(top_frame, background='white')
self.txt_module.bind('<Return>', self.run_lint)
self.txt_module.pack(side=LEFT, expand=True, fill=X)
#results box
rightscrollbar = Scrollbar(res_frame)
rightscrollbar.pack(side=RIGHT, fill=Y)
bottomscrollbar = Scrollbar(res_frame, orient=HORIZONTAL)
bottomscrollbar.pack(side=BOTTOM, fill=X)
self.results = Listbox(
res_frame,
yscrollcommand=rightscrollbar.set,
xscrollcommand=bottomscrollbar.set,
bg="white", font="Courier")
self.results.pack(expand=True, fill=BOTH, side=BOTTOM)
rightscrollbar.config(command=self.results.yview)
bottomscrollbar.config(command=self.results.xview)
#buttons
Button(top_frame, text='Open', command=self.file_open).pack(side=LEFT)
Button(top_frame, text='Open Package',
command=(lambda: self.file_open(package=True))).pack(side=LEFT)
self.btnRun = Button(top_frame, text='Run', command=self.run_lint)
self.btnRun.pack(side=LEFT)
Button(btn_frame, text='Quit', command=self.quit).pack(side=BOTTOM)
#radio buttons
self.information_box = IntVar()
self.convention_box = IntVar()
self.refactor_box = IntVar()
self.warning_box = IntVar()
self.error_box = IntVar()
self.fatal_box = IntVar()
i = Checkbutton(check_frame, text="Information", fg=COLORS['(I)'],
variable=self.information_box, command=self.refresh_msg_window)
c = Checkbutton(check_frame, text="Convention", fg=COLORS['(C)'],
variable=self.convention_box, command=self.refresh_msg_window)
r = Checkbutton(check_frame, text="Refactor", fg=COLORS['(R)'],
variable=self.refactor_box, command=self.refresh_msg_window)
w = Checkbutton(check_frame, text="Warning", fg=COLORS['(W)'],
variable=self.warning_box, command=self.refresh_msg_window)
e = Checkbutton(check_frame, text="Error", fg=COLORS['(E)'],
variable=self.error_box, command=self.refresh_msg_window)
f = Checkbutton(check_frame, text="Fatal", fg=COLORS['(F)'],
variable=self.fatal_box, command=self.refresh_msg_window)
i.select()
c.select()
r.select()
w.select()
e.select()
f.select()
i.pack(side=LEFT)
c.pack(side=LEFT)
r.pack(side=LEFT)
w.pack(side=LEFT)
e.pack(side=LEFT)
f.pack(side=LEFT)
#check boxes
self.box = StringVar()
# XXX should be generated
report = Radiobutton(
radio_frame, text="Report", variable=self.box,
value="Report", command=self.refresh_results_window)
raw_met = Radiobutton(
radio_frame, text="Raw metrics", variable=self.box,
value="Raw metrics", command=self.refresh_results_window)
dup = Radiobutton(
radio_frame, text="Duplication", variable=self.box,
value="Duplication", command=self.refresh_results_window)
ext = Radiobutton(
radio_frame, text="External dependencies",
variable=self.box, value="External dependencies",
command=self.refresh_results_window)
stat = Radiobutton(
radio_frame, text="Statistics by type",
variable=self.box, value="Statistics by type",
command=self.refresh_results_window)
msg_cat = Radiobutton(
radio_frame, text="Messages by category",
variable=self.box, value="Messages by category",
command=self.refresh_results_window)
msg = Radiobutton(
radio_frame, text="Messages", variable=self.box,
value="Messages", command=self.refresh_results_window)
source_file = Radiobutton(
radio_frame, text="Source File", variable=self.box,
value="Source File", command=self.refresh_results_window)
report.select()
report.grid(column=0, row=0, sticky=W)
raw_met.grid(column=1, row=0, sticky=W)
dup.grid(column=2, row=0, sticky=W)
msg.grid(column=3, row=0, sticky=W)
stat.grid(column=0, row=1, sticky=W)
msg_cat.grid(column=1, row=1, sticky=W)
ext.grid(column=2, row=1, sticky=W)
source_file.grid(column=3, row=1, sticky=W)
#dictionary for check boxes and associated error term
self.msg_type_dict = {
'I': lambda: self.information_box.get() == 1,
'C': lambda: self.convention_box.get() == 1,
'R': lambda: self.refactor_box.get() == 1,
'E': lambda: self.error_box.get() == 1,
'W': lambda: self.warning_box.get() == 1,
'F': lambda: self.fatal_box.get() == 1
}
self.txt_module.focus_set()
def select_recent_file(self, event): # pylint: disable=unused-argument
"""adds the selected file in the history listbox to the Module box"""
if not self.showhistory.size():
return
selected = self.showhistory.curselection()
item = self.showhistory.get(selected)
#update module
self.txt_module.delete(0, END)
self.txt_module.insert(0, item)
def refresh_msg_window(self):
"""refresh the message window with current output"""
#clear the window
self.lb_messages.delete(0, END)
self.visible_msgs = []
for msg in self.msgs:
if self.msg_type_dict.get(msg.C)():
self.visible_msgs.append(msg)
msg_str = convert_to_string(msg)
self.lb_messages.insert(END, msg_str)
fg_color = COLORS.get(msg_str[:3], 'black')
self.lb_messages.itemconfigure(END, fg=fg_color)
def refresh_results_window(self):
"""refresh the results window with current output"""
#clear the window
self.results.delete(0, END)
try:
for res in self.tabs[self.box.get()]:
self.results.insert(END, res)
except KeyError:
pass
def process_incoming(self):
"""process the incoming messages from running pylint"""
while self.msg_queue.qsize():
try:
msg = self.msg_queue.get(0)
if msg == "DONE":
self.report_stream.output_contents()
return False
#adding message to list of msgs
self.msgs.append(msg)
#displaying msg if message type is selected in check box
if self.msg_type_dict.get(msg.C)():
self.visible_msgs.append(msg)
msg_str = convert_to_string(msg)
self.lb_messages.insert(END, msg_str)
fg_color = COLORS.get(msg_str[:3], 'black')
self.lb_messages.itemconfigure(END, fg=fg_color)
except six.moves.queue.Empty:
pass
return True
def periodic_call(self):
"""determine when to unlock the run button"""
if self.process_incoming():
self.root.after(100, self.periodic_call)
else:
#enabling button so it can be run again
self.btnRun.config(state=NORMAL)
def mainloop(self):
"""launch the mainloop of the application"""
self.root.mainloop()
def quit(self, _=None):
"""quit the application"""
self.root.quit()
def halt(self): # pylint: disable=no-self-use
"""program halt placeholder"""
return
def file_open(self, package=False, _=None):
"""launch a file browser"""
if not package:
filename = askopenfilename(parent=self.root,
filetypes=[('pythonfiles', '*.py'),
('allfiles', '*')],
title='Select Module')
else:
filename = askdirectory(title="Select A Folder", mustexist=1)
if filename == ():
return
self.txt_module.delete(0, END)
self.txt_module.insert(0, filename)
def update_filenames(self):
"""update the list of recent filenames"""
filename = self.txt_module.get()
if not filename:
filename = os.getcwd()
if filename+'\n' in self.filenames:
index = self.filenames.index(filename+'\n')
self.filenames.pop(index)
#ensure only 10 most recent are stored
if len(self.filenames) == 10:
self.filenames.pop()
self.filenames.insert(0, filename+'\n')
def set_history_window(self):
"""update the history window with info from the history file"""
#clear the window
self.showhistory.delete(0, END)
# keep the last 10 most recent files
try:
view_history = open(HOME+HISTORY, 'r')
for hist in view_history.readlines():
if not hist in self.filenames:
self.filenames.append(hist)
self.showhistory.insert(END, hist.split('\n')[0])
view_history.close()
except IOError:
# do nothing since history file will be created later
return
def run_lint(self, _=None):
"""launches pylint"""
self.update_filenames()
self.root.configure(cursor='watch')
self.reporter = GUIReporter(self, output=self.report_stream)
module = self.txt_module.get()
if not module:
module = os.getcwd()
#cleaning up msgs and windows
self.msgs = []
self.visible_msgs = []
self.lb_messages.delete(0, END)
self.tabs = {}
self.results.delete(0, END)
self.btnRun.config(state=DISABLED)
#setting up a worker thread to run pylint
worker = Thread(target=lint_thread, args=(module, self.reporter, self,))
self.periodic_call()
worker.start()
# Overwrite the .pylint-gui-history file with all the new recently added files
# in order from filenames but only save last 10 files
write_history = open(HOME+HISTORY, 'w')
write_history.writelines(self.filenames)
write_history.close()
self.set_history_window()
self.root.configure(cursor='')
def show_sourcefile(self, event=None): # pylint: disable=unused-argument
selected = self.lb_messages.curselection()
if not selected:
return
msg = self.visible_msgs[int(selected[0])]
scroll = msg.line - 3
if scroll < 0:
scroll = 0
self.tabs["Source File"] = open(msg.path, "r").readlines()
self.box.set("Source File")
self.refresh_results_window()
self.results.yview(scroll)
self.results.select_set(msg.line - 1)
def main():
root = Tk()
frame = add_scrollbars(root, Frame, wheel=True)
if False:
def event_break(e):
print("breaking %r" % e)
return "break"
frame.bind_all("<Button-4>", event_break, "+")
lb = Label(frame, text="Label")
lb.pack(fill=BOTH, side=TOP)
cb = Combobox(frame, values=("1", "2", "3"))
cb.pack(fill=BOTH, side=TOP)
text = Text(frame)
text.pack(fill=BOTH, expand=True, side=TOP)
text.insert(END, "A\nMultiline\nMessage")
for i in range(3, 100):
text.insert(END, "line %d\n" % i)
text2 = Text(frame)
text2.pack(fill=BOTH, expand=True, side=TOP)
for i in range(1, 200):
text2.insert(END, "line %d\n" % i)
bt1 = Button(frame, text="Bt#1")
bt1.pack(side=LEFT)
bt2 = Button(frame, text="Bt#2")
bt2.pack(side=RIGHT)
root.rowconfigure(2, weight=0)
Label(root, text="Outer label").grid(row=2,
column=0,
columnspan=2,
sticky="EW")
if False:
def event(e):
print("event %r" % e)
frame.bind("<Button-4>", event, "+")
scrollable = set(["TCombobox", "Scrollbar", "Text"])
def event_all(e):
w = e.widget
m = e.widget
while m is not None:
if m is frame:
break
m = m.master
else:
print("Outer widget")
return
cls = w.winfo_class()
print("cls = " + cls)
if cls in scrollable:
return
# scroll here
bind_all_mouse_wheel(frame, event_all, "+")
root.mainloop()
def init_gui(self):
"""init helper"""
window = PanedWindow(self.root, orient="vertical")
window.pack(side=TOP, fill=BOTH, expand=True)
top_pane = Frame(window)
window.add(top_pane)
mid_pane = Frame(window)
window.add(mid_pane)
bottom_pane = Frame(window)
window.add(bottom_pane)
#setting up frames
top_frame = Frame(top_pane)
mid_frame = Frame(top_pane)
history_frame = Frame(top_pane)
radio_frame = Frame(mid_pane)
rating_frame = Frame(mid_pane)
res_frame = Frame(mid_pane)
check_frame = Frame(bottom_pane)
msg_frame = Frame(bottom_pane)
btn_frame = Frame(bottom_pane)
top_frame.pack(side=TOP, fill=X)
mid_frame.pack(side=TOP, fill=X)
history_frame.pack(side=TOP, fill=BOTH, expand=True)
radio_frame.pack(side=TOP, fill=X)
rating_frame.pack(side=TOP, fill=X)
res_frame.pack(side=TOP, fill=BOTH, expand=True)
check_frame.pack(side=TOP, fill=X)
msg_frame.pack(side=TOP, fill=BOTH, expand=True)
btn_frame.pack(side=TOP, fill=X)
# Binding F5 application-wide to run lint
self.root.bind('<F5>', self.run_lint)
#Message ListBox
rightscrollbar = Scrollbar(msg_frame)
rightscrollbar.pack(side=RIGHT, fill=Y)
bottomscrollbar = Scrollbar(msg_frame, orient=HORIZONTAL)
bottomscrollbar.pack(side=BOTTOM, fill=X)
self.lb_messages = Listbox(msg_frame,
yscrollcommand=rightscrollbar.set,
xscrollcommand=bottomscrollbar.set,
bg="white")
self.lb_messages.bind("<Double-Button-1>", self.show_sourcefile)
self.lb_messages.pack(expand=True, fill=BOTH)
rightscrollbar.config(command=self.lb_messages.yview)
bottomscrollbar.config(command=self.lb_messages.xview)
#History ListBoxes
rightscrollbar2 = Scrollbar(history_frame)
rightscrollbar2.pack(side=RIGHT, fill=Y)
bottomscrollbar2 = Scrollbar(history_frame, orient=HORIZONTAL)
bottomscrollbar2.pack(side=BOTTOM, fill=X)
self.showhistory = Listbox(history_frame,
yscrollcommand=rightscrollbar2.set,
xscrollcommand=bottomscrollbar2.set,
bg="white")
self.showhistory.pack(expand=True, fill=BOTH)
rightscrollbar2.config(command=self.showhistory.yview)
bottomscrollbar2.config(command=self.showhistory.xview)
self.showhistory.bind('<Double-Button-1>', self.select_recent_file)
self.set_history_window()
#status bar
self.status = Label(self.root, text="", bd=1, relief=SUNKEN, anchor=W)
self.status.pack(side=BOTTOM, fill=X)
#labelbl_ratingls
lbl_rating_label = Label(rating_frame, text='Rating:')
lbl_rating_label.pack(side=LEFT)
lbl_rating = Label(rating_frame, textvariable=self.rating)
lbl_rating.pack(side=LEFT)
Label(mid_frame, text='Recently Used:').pack(side=LEFT)
Label(top_frame, text='Module or package').pack(side=LEFT)
#file textbox
self.txt_module = Entry(top_frame, background='white')
self.txt_module.bind('<Return>', self.run_lint)
self.txt_module.pack(side=LEFT, expand=True, fill=X)
#results box
rightscrollbar = Scrollbar(res_frame)
rightscrollbar.pack(side=RIGHT, fill=Y)
bottomscrollbar = Scrollbar(res_frame, orient=HORIZONTAL)
bottomscrollbar.pack(side=BOTTOM, fill=X)
self.results = Listbox(res_frame,
yscrollcommand=rightscrollbar.set,
xscrollcommand=bottomscrollbar.set,
bg="white",
font="Courier")
self.results.pack(expand=True, fill=BOTH, side=BOTTOM)
rightscrollbar.config(command=self.results.yview)
bottomscrollbar.config(command=self.results.xview)
#buttons
Button(top_frame, text='Open', command=self.file_open).pack(side=LEFT)
Button(top_frame,
text='Open Package',
command=(lambda: self.file_open(package=True))).pack(side=LEFT)
self.btnRun = Button(top_frame, text='Run', command=self.run_lint)
self.btnRun.pack(side=LEFT)
Button(btn_frame, text='Quit', command=self.quit).pack(side=BOTTOM)
#radio buttons
self.information_box = IntVar()
self.convention_box = IntVar()
self.refactor_box = IntVar()
self.warning_box = IntVar()
self.error_box = IntVar()
self.fatal_box = IntVar()
i = Checkbutton(check_frame,
text="Information",
fg=COLORS['(I)'],
variable=self.information_box,
command=self.refresh_msg_window)
c = Checkbutton(check_frame,
text="Convention",
fg=COLORS['(C)'],
variable=self.convention_box,
command=self.refresh_msg_window)
r = Checkbutton(check_frame,
text="Refactor",
fg=COLORS['(R)'],
variable=self.refactor_box,
command=self.refresh_msg_window)
w = Checkbutton(check_frame,
text="Warning",
fg=COLORS['(W)'],
variable=self.warning_box,
command=self.refresh_msg_window)
e = Checkbutton(check_frame,
text="Error",
fg=COLORS['(E)'],
variable=self.error_box,
command=self.refresh_msg_window)
f = Checkbutton(check_frame,
text="Fatal",
fg=COLORS['(F)'],
variable=self.fatal_box,
command=self.refresh_msg_window)
i.select()
c.select()
r.select()
w.select()
e.select()
f.select()
i.pack(side=LEFT)
c.pack(side=LEFT)
r.pack(side=LEFT)
w.pack(side=LEFT)
e.pack(side=LEFT)
f.pack(side=LEFT)
#check boxes
self.box = StringVar()
# XXX should be generated
report = Radiobutton(radio_frame,
text="Report",
variable=self.box,
value="Report",
command=self.refresh_results_window)
raw_met = Radiobutton(radio_frame,
text="Raw metrics",
variable=self.box,
value="Raw metrics",
command=self.refresh_results_window)
dup = Radiobutton(radio_frame,
text="Duplication",
variable=self.box,
value="Duplication",
command=self.refresh_results_window)
ext = Radiobutton(radio_frame,
text="External dependencies",
variable=self.box,
value="External dependencies",
command=self.refresh_results_window)
stat = Radiobutton(radio_frame,
text="Statistics by type",
variable=self.box,
value="Statistics by type",
command=self.refresh_results_window)
msg_cat = Radiobutton(radio_frame,
text="Messages by category",
variable=self.box,
value="Messages by category",
command=self.refresh_results_window)
msg = Radiobutton(radio_frame,
text="Messages",
variable=self.box,
value="Messages",
command=self.refresh_results_window)
source_file = Radiobutton(radio_frame,
text="Source File",
variable=self.box,
value="Source File",
command=self.refresh_results_window)
report.select()
report.grid(column=0, row=0, sticky=W)
raw_met.grid(column=1, row=0, sticky=W)
dup.grid(column=2, row=0, sticky=W)
msg.grid(column=3, row=0, sticky=W)
stat.grid(column=0, row=1, sticky=W)
msg_cat.grid(column=1, row=1, sticky=W)
ext.grid(column=2, row=1, sticky=W)
source_file.grid(column=3, row=1, sticky=W)
#dictionary for check boxes and associated error term
self.msg_type_dict = {
'I': lambda: self.information_box.get() == 1,
'C': lambda: self.convention_box.get() == 1,
'R': lambda: self.refactor_box.get() == 1,
'E': lambda: self.error_box.get() == 1,
'W': lambda: self.warning_box.get() == 1,
'F': lambda: self.fatal_box.get() == 1
}
self.txt_module.focus_set()
class LintGui(object):
"""Build and control a window to interact with pylint"""
def __init__(self, root=None):
"""init"""
self.root = root or Tk()
self.root.title('Pylint')
#reporter
self.reporter = None
#message queue for output from reporter
self.msg_queue = six.moves.queue.Queue()
self.msgs = []
self.visible_msgs = []
self.filenames = []
self.rating = StringVar()
self.tabs = {}
self.report_stream = BasicStream(self)
#gui objects
self.lb_messages = None
self.showhistory = None
self.results = None
self.btnRun = None
self.information_box = None
self.convention_box = None
self.refactor_box = None
self.warning_box = None
self.error_box = None
self.fatal_box = None
self.txtModule = None
self.status = None
self.msg_type_dict = None
self.init_gui()
def init_gui(self):
"""init helper"""
window = PanedWindow(self.root, orient="vertical")
window.pack(side=TOP, fill=BOTH, expand=True)
top_pane = Frame(window)
window.add(top_pane)
mid_pane = Frame(window)
window.add(mid_pane)
bottom_pane = Frame(window)
window.add(bottom_pane)
#setting up frames
top_frame = Frame(top_pane)
mid_frame = Frame(top_pane)
history_frame = Frame(top_pane)
radio_frame = Frame(mid_pane)
rating_frame = Frame(mid_pane)
res_frame = Frame(mid_pane)
check_frame = Frame(bottom_pane)
msg_frame = Frame(bottom_pane)
btn_frame = Frame(bottom_pane)
top_frame.pack(side=TOP, fill=X)
mid_frame.pack(side=TOP, fill=X)
history_frame.pack(side=TOP, fill=BOTH, expand=True)
radio_frame.pack(side=TOP, fill=X)
rating_frame.pack(side=TOP, fill=X)
res_frame.pack(side=TOP, fill=BOTH, expand=True)
check_frame.pack(side=TOP, fill=X)
msg_frame.pack(side=TOP, fill=BOTH, expand=True)
btn_frame.pack(side=TOP, fill=X)
# Binding F5 application-wide to run lint
self.root.bind('<F5>', self.run_lint)
#Message ListBox
rightscrollbar = Scrollbar(msg_frame)
rightscrollbar.pack(side=RIGHT, fill=Y)
bottomscrollbar = Scrollbar(msg_frame, orient=HORIZONTAL)
bottomscrollbar.pack(side=BOTTOM, fill=X)
self.lb_messages = Listbox(msg_frame,
yscrollcommand=rightscrollbar.set,
xscrollcommand=bottomscrollbar.set,
bg="white")
self.lb_messages.bind("<Double-Button-1>", self.show_sourcefile)
self.lb_messages.pack(expand=True, fill=BOTH)
rightscrollbar.config(command=self.lb_messages.yview)
bottomscrollbar.config(command=self.lb_messages.xview)
#History ListBoxes
rightscrollbar2 = Scrollbar(history_frame)
rightscrollbar2.pack(side=RIGHT, fill=Y)
bottomscrollbar2 = Scrollbar(history_frame, orient=HORIZONTAL)
bottomscrollbar2.pack(side=BOTTOM, fill=X)
self.showhistory = Listbox(history_frame,
yscrollcommand=rightscrollbar2.set,
xscrollcommand=bottomscrollbar2.set,
bg="white")
self.showhistory.pack(expand=True, fill=BOTH)
rightscrollbar2.config(command=self.showhistory.yview)
bottomscrollbar2.config(command=self.showhistory.xview)
self.showhistory.bind('<Double-Button-1>', self.select_recent_file)
self.set_history_window()
#status bar
self.status = Label(self.root, text="", bd=1, relief=SUNKEN, anchor=W)
self.status.pack(side=BOTTOM, fill=X)
#labelbl_ratingls
lbl_rating_label = Label(rating_frame, text='Rating:')
lbl_rating_label.pack(side=LEFT)
lbl_rating = Label(rating_frame, textvariable=self.rating)
lbl_rating.pack(side=LEFT)
Label(mid_frame, text='Recently Used:').pack(side=LEFT)
Label(top_frame, text='Module or package').pack(side=LEFT)
#file textbox
self.txt_module = Entry(top_frame, background='white')
self.txt_module.bind('<Return>', self.run_lint)
self.txt_module.pack(side=LEFT, expand=True, fill=X)
#results box
rightscrollbar = Scrollbar(res_frame)
rightscrollbar.pack(side=RIGHT, fill=Y)
bottomscrollbar = Scrollbar(res_frame, orient=HORIZONTAL)
bottomscrollbar.pack(side=BOTTOM, fill=X)
self.results = Listbox(res_frame,
yscrollcommand=rightscrollbar.set,
xscrollcommand=bottomscrollbar.set,
bg="white",
font="Courier")
self.results.pack(expand=True, fill=BOTH, side=BOTTOM)
rightscrollbar.config(command=self.results.yview)
bottomscrollbar.config(command=self.results.xview)
#buttons
Button(top_frame, text='Open', command=self.file_open).pack(side=LEFT)
Button(top_frame,
text='Open Package',
command=(lambda: self.file_open(package=True))).pack(side=LEFT)
self.btnRun = Button(top_frame, text='Run', command=self.run_lint)
self.btnRun.pack(side=LEFT)
Button(btn_frame, text='Quit', command=self.quit).pack(side=BOTTOM)
#radio buttons
self.information_box = IntVar()
self.convention_box = IntVar()
self.refactor_box = IntVar()
self.warning_box = IntVar()
self.error_box = IntVar()
self.fatal_box = IntVar()
i = Checkbutton(check_frame,
text="Information",
fg=COLORS['(I)'],
variable=self.information_box,
command=self.refresh_msg_window)
c = Checkbutton(check_frame,
text="Convention",
fg=COLORS['(C)'],
variable=self.convention_box,
command=self.refresh_msg_window)
r = Checkbutton(check_frame,
text="Refactor",
fg=COLORS['(R)'],
variable=self.refactor_box,
command=self.refresh_msg_window)
w = Checkbutton(check_frame,
text="Warning",
fg=COLORS['(W)'],
variable=self.warning_box,
command=self.refresh_msg_window)
e = Checkbutton(check_frame,
text="Error",
fg=COLORS['(E)'],
variable=self.error_box,
command=self.refresh_msg_window)
f = Checkbutton(check_frame,
text="Fatal",
fg=COLORS['(F)'],
variable=self.fatal_box,
command=self.refresh_msg_window)
i.select()
c.select()
r.select()
w.select()
e.select()
f.select()
i.pack(side=LEFT)
c.pack(side=LEFT)
r.pack(side=LEFT)
w.pack(side=LEFT)
e.pack(side=LEFT)
f.pack(side=LEFT)
#check boxes
self.box = StringVar()
# XXX should be generated
report = Radiobutton(radio_frame,
text="Report",
variable=self.box,
value="Report",
command=self.refresh_results_window)
raw_met = Radiobutton(radio_frame,
text="Raw metrics",
variable=self.box,
value="Raw metrics",
command=self.refresh_results_window)
dup = Radiobutton(radio_frame,
text="Duplication",
variable=self.box,
value="Duplication",
command=self.refresh_results_window)
ext = Radiobutton(radio_frame,
text="External dependencies",
variable=self.box,
value="External dependencies",
command=self.refresh_results_window)
stat = Radiobutton(radio_frame,
text="Statistics by type",
variable=self.box,
value="Statistics by type",
command=self.refresh_results_window)
msg_cat = Radiobutton(radio_frame,
text="Messages by category",
variable=self.box,
value="Messages by category",
command=self.refresh_results_window)
msg = Radiobutton(radio_frame,
text="Messages",
variable=self.box,
value="Messages",
command=self.refresh_results_window)
source_file = Radiobutton(radio_frame,
text="Source File",
variable=self.box,
value="Source File",
command=self.refresh_results_window)
report.select()
report.grid(column=0, row=0, sticky=W)
raw_met.grid(column=1, row=0, sticky=W)
dup.grid(column=2, row=0, sticky=W)
msg.grid(column=3, row=0, sticky=W)
stat.grid(column=0, row=1, sticky=W)
msg_cat.grid(column=1, row=1, sticky=W)
ext.grid(column=2, row=1, sticky=W)
source_file.grid(column=3, row=1, sticky=W)
#dictionary for check boxes and associated error term
self.msg_type_dict = {
'I': lambda: self.information_box.get() == 1,
'C': lambda: self.convention_box.get() == 1,
'R': lambda: self.refactor_box.get() == 1,
'E': lambda: self.error_box.get() == 1,
'W': lambda: self.warning_box.get() == 1,
'F': lambda: self.fatal_box.get() == 1
}
self.txt_module.focus_set()
def select_recent_file(self, event): # pylint: disable=unused-argument
"""adds the selected file in the history listbox to the Module box"""
if not self.showhistory.size():
return
selected = self.showhistory.curselection()
item = self.showhistory.get(selected)
#update module
self.txt_module.delete(0, END)
self.txt_module.insert(0, item)
def refresh_msg_window(self):
"""refresh the message window with current output"""
#clear the window
self.lb_messages.delete(0, END)
self.visible_msgs = []
for msg in self.msgs:
if self.msg_type_dict.get(msg.C)():
self.visible_msgs.append(msg)
msg_str = convert_to_string(msg)
self.lb_messages.insert(END, msg_str)
fg_color = COLORS.get(msg_str[:3], 'black')
self.lb_messages.itemconfigure(END, fg=fg_color)
def refresh_results_window(self):
"""refresh the results window with current output"""
#clear the window
self.results.delete(0, END)
try:
for res in self.tabs[self.box.get()]:
self.results.insert(END, res)
except KeyError:
pass
def process_incoming(self):
"""process the incoming messages from running pylint"""
while self.msg_queue.qsize():
try:
msg = self.msg_queue.get(0)
if msg == "DONE":
self.report_stream.output_contents()
return False
#adding message to list of msgs
self.msgs.append(msg)
#displaying msg if message type is selected in check box
if self.msg_type_dict.get(msg.C)():
self.visible_msgs.append(msg)
msg_str = convert_to_string(msg)
self.lb_messages.insert(END, msg_str)
fg_color = COLORS.get(msg_str[:3], 'black')
self.lb_messages.itemconfigure(END, fg=fg_color)
except six.moves.queue.Empty:
pass
return True
def periodic_call(self):
"""determine when to unlock the run button"""
if self.process_incoming():
self.root.after(100, self.periodic_call)
else:
#enabling button so it can be run again
self.btnRun.config(state=NORMAL)
def mainloop(self):
"""launch the mainloop of the application"""
self.root.mainloop()
def quit(self, _=None):
"""quit the application"""
self.root.quit()
def halt(self): # pylint: disable=no-self-use
"""program halt placeholder"""
return
def file_open(self, package=False, _=None):
"""launch a file browser"""
if not package:
filename = askopenfilename(parent=self.root,
filetypes=[('pythonfiles', '*.py'),
('allfiles', '*')],
title='Select Module')
else:
filename = askdirectory(title="Select A Folder", mustexist=1)
if filename == ():
return
self.txt_module.delete(0, END)
self.txt_module.insert(0, filename)
def update_filenames(self):
"""update the list of recent filenames"""
filename = self.txt_module.get()
if not filename:
filename = os.getcwd()
if filename + '\n' in self.filenames:
index = self.filenames.index(filename + '\n')
self.filenames.pop(index)
#ensure only 10 most recent are stored
if len(self.filenames) == 10:
self.filenames.pop()
self.filenames.insert(0, filename + '\n')
def set_history_window(self):
"""update the history window with info from the history file"""
#clear the window
self.showhistory.delete(0, END)
# keep the last 10 most recent files
try:
view_history = open(HOME + HISTORY, 'r')
for hist in view_history.readlines():
if hist not in self.filenames:
self.filenames.append(hist)
self.showhistory.insert(END, hist.split('\n')[0])
view_history.close()
except IOError:
# do nothing since history file will be created later
return
def run_lint(self, _=None):
"""launches pylint"""
self.update_filenames()
self.root.configure(cursor='watch')
self.reporter = GUIReporter(self, output=self.report_stream)
module = self.txt_module.get()
if not module:
module = os.getcwd()
#cleaning up msgs and windows
self.msgs = []
self.visible_msgs = []
self.lb_messages.delete(0, END)
self.tabs = {}
self.results.delete(0, END)
self.btnRun.config(state=DISABLED)
#setting up a worker thread to run pylint
worker = Thread(target=lint_thread,
args=(
module,
self.reporter,
self,
))
self.periodic_call()
worker.start()
# Overwrite the .pylint-gui-history file with all the new recently added files
# in order from filenames but only save last 10 files
write_history = open(HOME + HISTORY, 'w')
write_history.writelines(self.filenames)
write_history.close()
self.set_history_window()
self.root.configure(cursor='')
def show_sourcefile(self, event=None): # pylint: disable=unused-argument
selected = self.lb_messages.curselection()
if not selected:
return
msg = self.visible_msgs[int(selected[0])]
scroll = msg.line - 3
if scroll < 0:
scroll = 0
self.tabs["Source File"] = open(msg.path, "r").readlines()
self.box.set("Source File")
self.refresh_results_window()
self.results.yview(scroll)
self.results.select_set(msg.line - 1)
class ConcordanceSearchView(object):
_BACKGROUND_COLOUR='#FFF' #white
#Colour of highlighted results
_HIGHLIGHT_WORD_COLOUR='#F00' #red
_HIGHLIGHT_WORD_TAG='HL_WRD_TAG'
_HIGHLIGHT_LABEL_COLOUR='#C0C0C0' # dark grey
_HIGHLIGHT_LABEL_TAG='HL_LBL_TAG'
#Percentage of text left of the scrollbar position
_FRACTION_LEFT_TEXT=0.30
def __init__(self):
self.queue = q.Queue()
self.model = ConcordanceSearchModel(self.queue)
self.top = Tk()
self._init_top(self.top)
self._init_menubar()
self._init_widgets(self.top)
self.load_corpus(self.model.DEFAULT_CORPUS)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def _init_top(self, top):
top.geometry('950x680+50+50')
top.title('NLTK Concordance Search')
top.bind('<Control-q>', self.destroy)
top.protocol('WM_DELETE_WINDOW', self.destroy)
top.minsize(950,680)
def _init_widgets(self, parent):
self.main_frame = Frame(parent, dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
self._init_corpus_select(self.main_frame)
self._init_query_box(self.main_frame)
self._init_results_box(self.main_frame)
self._init_paging(self.main_frame)
self._init_status(self.main_frame)
self.main_frame.pack(fill='both', expand=True)
def _init_menubar(self):
self._result_size = IntVar(self.top)
self._cntx_bf_len = IntVar(self.top)
self._cntx_af_len = IntVar(self.top)
menubar = Menu(self.top)
filemenu = Menu(menubar, tearoff=0, borderwidth=0)
filemenu.add_command(label='Exit', underline=1,
command=self.destroy, accelerator='Ctrl-q')
menubar.add_cascade(label='File', underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
rescntmenu = Menu(editmenu, tearoff=0)
rescntmenu.add_radiobutton(label='20', variable=self._result_size,
underline=0, value=20,
command=self.set_result_size)
rescntmenu.add_radiobutton(label='50', variable=self._result_size,
underline=0, value=50,
command=self.set_result_size)
rescntmenu.add_radiobutton(label='100', variable=self._result_size,
underline=0, value=100,
command=self.set_result_size)
rescntmenu.invoke(1)
editmenu.add_cascade(label='Result Count', underline=0, menu=rescntmenu)
cntxmenu = Menu(editmenu, tearoff=0)
cntxbfmenu = Menu(cntxmenu, tearoff=0)
cntxbfmenu.add_radiobutton(label='60 characters',
variable=self._cntx_bf_len,
underline=0, value=60,
command=self.set_cntx_bf_len)
cntxbfmenu.add_radiobutton(label='80 characters',
variable=self._cntx_bf_len,
underline=0, value=80,
command=self.set_cntx_bf_len)
cntxbfmenu.add_radiobutton(label='100 characters',
variable=self._cntx_bf_len,
underline=0, value=100,
command=self.set_cntx_bf_len)
cntxbfmenu.invoke(1)
cntxmenu.add_cascade(label='Before', underline=0, menu=cntxbfmenu)
cntxafmenu = Menu(cntxmenu, tearoff=0)
cntxafmenu.add_radiobutton(label='70 characters',
variable=self._cntx_af_len,
underline=0, value=70,
command=self.set_cntx_af_len)
cntxafmenu.add_radiobutton(label='90 characters',
variable=self._cntx_af_len,
underline=0, value=90,
command=self.set_cntx_af_len)
cntxafmenu.add_radiobutton(label='110 characters',
variable=self._cntx_af_len,
underline=0, value=110,
command=self.set_cntx_af_len)
cntxafmenu.invoke(1)
cntxmenu.add_cascade(label='After', underline=0, menu=cntxafmenu)
editmenu.add_cascade(label='Context', underline=0, menu=cntxmenu)
menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
self.top.config(menu=menubar)
def set_result_size(self, **kwargs):
self.model.result_count = self._result_size.get()
def set_cntx_af_len(self, **kwargs):
self._char_after = self._cntx_af_len.get()
def set_cntx_bf_len(self, **kwargs):
self._char_before = self._cntx_bf_len.get()
def _init_corpus_select(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.var = StringVar(innerframe)
self.var.set(self.model.DEFAULT_CORPUS)
Label(innerframe, justify=LEFT, text=' Corpus: ',
background=self._BACKGROUND_COLOUR, padx = 2, pady = 1, border = 0).pack(side='left')
other_corpora = list(self.model.CORPORA.keys()).remove(self.model.DEFAULT_CORPUS)
om = OptionMenu(innerframe, self.var, self.model.DEFAULT_CORPUS, command=self.corpus_selected, *self.model.non_default_corpora())
om['borderwidth'] = 0
om['highlightthickness'] = 1
om.pack(side='left')
innerframe.pack(side='top', fill='x', anchor='n')
def _init_status(self, parent):
self.status = Label(parent, justify=LEFT, relief=SUNKEN, background=self._BACKGROUND_COLOUR, border=0, padx = 1, pady = 0)
self.status.pack(side='top', anchor='sw')
def _init_query_box(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
another = Frame(innerframe, background=self._BACKGROUND_COLOUR)
self.query_box = Entry(another, width=60)
self.query_box.pack(side='left', fill='x', pady=25, anchor='center')
self.search_button = Button(another, text='Search', command=self.search, borderwidth=1, highlightthickness=1)
self.search_button.pack(side='left', fill='x', pady=25, anchor='center')
self.query_box.bind('<KeyPress-Return>', self.search_enter_keypress_handler)
another.pack()
innerframe.pack(side='top', fill='x', anchor='n')
def search_enter_keypress_handler(self, *event):
self.search()
def _init_results_box(self, parent):
innerframe = Frame(parent)
i1 = Frame(innerframe)
i2 = Frame(innerframe)
vscrollbar = Scrollbar(i1, borderwidth=1)
hscrollbar = Scrollbar(i2, borderwidth=1, orient='horiz')
self.results_box = Text(i1,
font=Font(family='courier', size='16'),
state='disabled', borderwidth=1,
yscrollcommand=vscrollbar.set,
xscrollcommand=hscrollbar.set, wrap='none', width='40', height = '20', exportselection=1)
self.results_box.pack(side='left', fill='both', expand=True)
self.results_box.tag_config(self._HIGHLIGHT_WORD_TAG, foreground=self._HIGHLIGHT_WORD_COLOUR)
self.results_box.tag_config(self._HIGHLIGHT_LABEL_TAG, foreground=self._HIGHLIGHT_LABEL_COLOUR)
vscrollbar.pack(side='left', fill='y', anchor='e')
vscrollbar.config(command=self.results_box.yview)
hscrollbar.pack(side='left', fill='x', expand=True, anchor='w')
hscrollbar.config(command=self.results_box.xview)
#there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
Label(i2, text=' ', background=self._BACKGROUND_COLOUR).pack(side='left', anchor='e')
i1.pack(side='top', fill='both', expand=True, anchor='n')
i2.pack(side='bottom', fill='x', anchor='s')
innerframe.pack(side='top', fill='both', expand=True)
def _init_paging(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.prev = prev = Button(innerframe, text='Previous', command=self.previous, width='10', borderwidth=1, highlightthickness=1, state='disabled')
prev.pack(side='left', anchor='center')
self.next = next = Button(innerframe, text='Next', command=self.__next__, width='10', borderwidth=1, highlightthickness=1, state='disabled')
next.pack(side='right', anchor='center')
innerframe.pack(side='top', fill='y')
self.current_page = 0
def previous(self):
self.clear_results_box()
self.freeze_editable()
self.model.prev(self.current_page - 1)
def __next__(self):
self.clear_results_box()
self.freeze_editable()
self.model.next(self.current_page + 1)
def about(self, *e):
ABOUT = ("NLTK Concordance Search Demo\n")
TITLE = 'About: NLTK Concordance Search Demo'
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE, parent=self.main_frame).show()
except:
ShowText(self.top, TITLE, ABOUT)
def _bind_event_handlers(self):
self.top.bind(CORPUS_LOADED_EVENT, self.handle_corpus_loaded)
self.top.bind(SEARCH_TERMINATED_EVENT, self.handle_search_terminated)
self.top.bind(SEARCH_ERROR_EVENT, self.handle_search_error)
self.top.bind(ERROR_LOADING_CORPUS_EVENT, self.handle_error_loading_corpus)
def _poll(self):
try:
event = self.queue.get(block=False)
except q.Empty:
pass
else:
if event == CORPUS_LOADED_EVENT:
self.handle_corpus_loaded(event)
elif event == SEARCH_TERMINATED_EVENT:
self.handle_search_terminated(event)
elif event == SEARCH_ERROR_EVENT:
self.handle_search_error(event)
elif event == ERROR_LOADING_CORPUS_EVENT:
self.handle_error_loading_corpus(event)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def handle_error_loading_corpus(self, event):
self.status['text'] = 'Error in loading ' + self.var.get()
self.unfreeze_editable()
self.clear_all()
self.freeze_editable()
def handle_corpus_loaded(self, event):
self.status['text'] = self.var.get() + ' is loaded'
self.unfreeze_editable()
self.clear_all()
self.query_box.focus_set()
def handle_search_terminated(self, event):
#todo: refactor the model such that it is less state sensitive
results = self.model.get_results()
self.write_results(results)
self.status['text'] = ''
if len(results) == 0:
self.status['text'] = 'No results found for ' + self.model.query
else:
self.current_page = self.model.last_requested_page
self.unfreeze_editable()
self.results_box.xview_moveto(self._FRACTION_LEFT_TEXT)
def handle_search_error(self, event):
self.status['text'] = 'Error in query ' + self.model.query
self.unfreeze_editable()
def corpus_selected(self, *args):
new_selection = self.var.get()
self.load_corpus(new_selection)
def load_corpus(self, selection):
if self.model.selected_corpus != selection:
self.status['text'] = 'Loading ' + selection + '...'
self.freeze_editable()
self.model.load_corpus(selection)
def search(self):
self.current_page = 0
self.clear_results_box()
self.model.reset_results()
query = self.query_box.get()
if (len(query.strip()) == 0): return
self.status['text'] = 'Searching for ' + query
self.freeze_editable()
self.model.search(query, self.current_page + 1, )
def write_results(self, results):
self.results_box['state'] = 'normal'
row = 1
for each in results:
sent, pos1, pos2 = each[0].strip(), each[1], each[2]
if len(sent) != 0:
if (pos1 < self._char_before):
sent, pos1, pos2 = self.pad(sent, pos1, pos2)
sentence = sent[pos1-self._char_before:pos1+self._char_after]
if not row == len(results):
sentence += '\n'
self.results_box.insert(str(row) + '.0', sentence)
word_markers, label_markers = self.words_and_labels(sent, pos1, pos2)
for marker in word_markers: self.results_box.tag_add(self._HIGHLIGHT_WORD_TAG, str(row) + '.' + str(marker[0]), str(row) + '.' + str(marker[1]))
for marker in label_markers: self.results_box.tag_add(self._HIGHLIGHT_LABEL_TAG, str(row) + '.' + str(marker[0]), str(row) + '.' + str(marker[1]))
row += 1
self.results_box['state'] = 'disabled'
def words_and_labels(self, sentence, pos1, pos2):
search_exp = sentence[pos1:pos2]
words, labels = [], []
labeled_words = search_exp.split(' ')
index = 0
for each in labeled_words:
if each == '':
index += 1
else:
word, label = each.split('/')
words.append((self._char_before + index, self._char_before + index + len(word)))
index += len(word) + 1
labels.append((self._char_before + index, self._char_before + index + len(label)))
index += len(label)
index += 1
return words, labels
def pad(self, sent, hstart, hend):
if hstart >= self._char_before:
return sent, hstart, hend
d = self._char_before - hstart
sent = ''.join([' '] * d) + sent
return sent, hstart + d, hend + d
def destroy(self, *e):
if self.top is None: return
self.top.after_cancel(self.after)
self.top.destroy()
self.top = None
def clear_all(self):
self.query_box.delete(0, END)
self.model.reset_query()
self.clear_results_box()
def clear_results_box(self):
self.results_box['state'] = 'normal'
self.results_box.delete("1.0", END)
self.results_box['state'] = 'disabled'
def freeze_editable(self):
self.query_box['state'] = 'disabled'
self.search_button['state'] = 'disabled'
self.prev['state'] = 'disabled'
self.next['state'] = 'disabled'
def unfreeze_editable(self):
self.query_box['state'] = 'normal'
self.search_button['state'] = 'normal'
self.set_paging_button_states()
def set_paging_button_states(self):
if self.current_page == 0 or self.current_page == 1:
self.prev['state'] = 'disabled'
else:
self.prev['state'] = 'normal'
if self.model.has_more_pages(self.current_page):
self.next['state'] = 'normal'
else:
self.next['state'] = 'disabled'
def fire_event(self, event):
#Firing an event so that rendering of widgets happen in the mainloop thread
self.top.event_generate(event, when='tail')
def mainloop(self, *args, **kwargs):
if in_idle(): return
self.top.mainloop(*args, **kwargs)
class CollocationsView:
_BACKGROUND_COLOUR = '#FFF' # white
def __init__(self):
self.queue = q.Queue()
self.model = CollocationsModel(self.queue)
self.top = Tk()
self._init_top(self.top)
self._init_menubar()
self._init_widgets(self.top)
self.load_corpus(self.model.DEFAULT_CORPUS)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def _init_top(self, top):
top.geometry('550x650+50+50')
top.title('NLTK Collocations List')
top.bind('<Control-q>', self.destroy)
top.protocol('WM_DELETE_WINDOW', self.destroy)
top.minsize(550, 650)
def _init_widgets(self, parent):
self.main_frame = Frame(
parent,
dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
self._init_corpus_select(self.main_frame)
self._init_results_box(self.main_frame)
self._init_paging(self.main_frame)
self._init_status(self.main_frame)
self.main_frame.pack(fill='both', expand=True)
def _init_corpus_select(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.var = StringVar(innerframe)
self.var.set(self.model.DEFAULT_CORPUS)
Label(innerframe,
justify=LEFT,
text=' Corpus: ',
background=self._BACKGROUND_COLOUR,
padx=2,
pady=1,
border=0).pack(side='left')
other_corpora = list(self.model.CORPORA.keys()).remove(
self.model.DEFAULT_CORPUS)
om = OptionMenu(innerframe,
self.var,
self.model.DEFAULT_CORPUS,
command=self.corpus_selected,
*self.model.non_default_corpora())
om['borderwidth'] = 0
om['highlightthickness'] = 1
om.pack(side='left')
innerframe.pack(side='top', fill='x', anchor='n')
def _init_status(self, parent):
self.status = Label(parent,
justify=LEFT,
relief=SUNKEN,
background=self._BACKGROUND_COLOUR,
border=0,
padx=1,
pady=0)
self.status.pack(side='top', anchor='sw')
def _init_menubar(self):
self._result_size = IntVar(self.top)
menubar = Menu(self.top)
filemenu = Menu(menubar, tearoff=0, borderwidth=0)
filemenu.add_command(label='Exit',
underline=1,
command=self.destroy,
accelerator='Ctrl-q')
menubar.add_cascade(label='File', underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
rescntmenu = Menu(editmenu, tearoff=0)
rescntmenu.add_radiobutton(label='20',
variable=self._result_size,
underline=0,
value=20,
command=self.set_result_size)
rescntmenu.add_radiobutton(label='50',
variable=self._result_size,
underline=0,
value=50,
command=self.set_result_size)
rescntmenu.add_radiobutton(label='100',
variable=self._result_size,
underline=0,
value=100,
command=self.set_result_size)
rescntmenu.invoke(1)
editmenu.add_cascade(label='Result Count',
underline=0,
menu=rescntmenu)
menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
self.top.config(menu=menubar)
def set_result_size(self, **kwargs):
self.model.result_count = self._result_size.get()
def _init_results_box(self, parent):
innerframe = Frame(parent)
i1 = Frame(innerframe)
i2 = Frame(innerframe)
vscrollbar = Scrollbar(i1, borderwidth=1)
hscrollbar = Scrollbar(i2, borderwidth=1, orient='horiz')
self.results_box = Text(i1,
font=Font(family='courier', size='16'),
state='disabled',
borderwidth=1,
yscrollcommand=vscrollbar.set,
xscrollcommand=hscrollbar.set,
wrap='none',
width='40',
height='20',
exportselection=1)
self.results_box.pack(side='left', fill='both', expand=True)
vscrollbar.pack(side='left', fill='y', anchor='e')
vscrollbar.config(command=self.results_box.yview)
hscrollbar.pack(side='left', fill='x', expand=True, anchor='w')
hscrollbar.config(command=self.results_box.xview)
# there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
Label(i2, text=' ',
background=self._BACKGROUND_COLOUR).pack(side='left', anchor='e')
i1.pack(side='top', fill='both', expand=True, anchor='n')
i2.pack(side='bottom', fill='x', anchor='s')
innerframe.pack(side='top', fill='both', expand=True)
def _init_paging(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.prev = prev = Button(innerframe,
text='Previous',
command=self.previous,
width='10',
borderwidth=1,
highlightthickness=1,
state='disabled')
prev.pack(side='left', anchor='center')
self.next = next = Button(innerframe,
text='Next',
command=self.__next__,
width='10',
borderwidth=1,
highlightthickness=1,
state='disabled')
next.pack(side='right', anchor='center')
innerframe.pack(side='top', fill='y')
self.reset_current_page()
def reset_current_page(self):
self.current_page = -1
def _poll(self):
try:
event = self.queue.get(block=False)
except q.Empty:
pass
else:
if event == CORPUS_LOADED_EVENT:
self.handle_corpus_loaded(event)
elif event == ERROR_LOADING_CORPUS_EVENT:
self.handle_error_loading_corpus(event)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def handle_error_loading_corpus(self, event):
self.status['text'] = 'Error in loading ' + self.var.get()
self.unfreeze_editable()
self.clear_results_box()
self.freeze_editable()
self.reset_current_page()
def handle_corpus_loaded(self, event):
self.status['text'] = self.var.get() + ' is loaded'
self.unfreeze_editable()
self.clear_results_box()
self.reset_current_page()
# self.next()
collocations = self.model.next(self.current_page + 1)
self.write_results(collocations)
self.current_page += 1
def corpus_selected(self, *args):
new_selection = self.var.get()
self.load_corpus(new_selection)
def previous(self):
self.freeze_editable()
collocations = self.model.prev(self.current_page - 1)
self.current_page = self.current_page - 1
self.clear_results_box()
self.write_results(collocations)
self.unfreeze_editable()
def __next__(self):
self.freeze_editable()
collocations = self.model.next(self.current_page + 1)
self.clear_results_box()
self.write_results(collocations)
self.current_page += 1
self.unfreeze_editable()
def load_corpus(self, selection):
if self.model.selected_corpus != selection:
self.status['text'] = 'Loading ' + selection + '...'
self.freeze_editable()
self.model.load_corpus(selection)
def freeze_editable(self):
self.prev['state'] = 'disabled'
self.next['state'] = 'disabled'
def clear_results_box(self):
self.results_box['state'] = 'normal'
self.results_box.delete("1.0", END)
self.results_box['state'] = 'disabled'
def fire_event(self, event):
# Firing an event so that rendering of widgets happen in the mainloop thread
self.top.event_generate(event, when='tail')
def destroy(self, *e):
if self.top is None:
return
self.top.after_cancel(self.after)
self.top.destroy()
self.top = None
def mainloop(self, *args, **kwargs):
if in_idle():
return
self.top.mainloop(*args, **kwargs)
def unfreeze_editable(self):
self.set_paging_button_states()
def set_paging_button_states(self):
if self.current_page == -1 or self.current_page == 0:
self.prev['state'] = 'disabled'
else:
self.prev['state'] = 'normal'
if self.model.is_last_page(self.current_page):
self.next['state'] = 'disabled'
else:
self.next['state'] = 'normal'
def write_results(self, results):
self.results_box['state'] = 'normal'
row = 1
for each in results:
self.results_box.insert(
str(row) + '.0', each[0] + " " + each[1] + "\n")
row += 1
self.results_box['state'] = 'disabled'
class RecursiveDescentApp(object):
"""
A graphical tool for exploring the recursive descent parser. The tool
displays the parser's tree and the remaining text, and allows the
user to control the parser's operation. In particular, the user
can expand subtrees on the frontier, match tokens on the frontier
against the text, and backtrack. A "step" button simply steps
through the parsing process, performing the operations that
``RecursiveDescentParser`` would use.
"""
def __init__(self, grammar, sent, trace=0):
self._sent = sent
self._parser = SteppingRecursiveDescentParser(grammar, trace)
# Set up the main window.
self._top = Tk()
self._top.title('Recursive Descent Parser Application')
# Set up key bindings.
self._init_bindings()
# Initialize the fonts.
self._init_fonts(self._top)
# Animations. animating_lock is a lock to prevent the demo
# from performing new operations while it's animating.
self._animation_frames = IntVar(self._top)
self._animation_frames.set(5)
self._animating_lock = 0
self._autostep = 0
# The user can hide the grammar.
self._show_grammar = IntVar(self._top)
self._show_grammar.set(1)
# Create the basic frames.
self._init_menubar(self._top)
self._init_buttons(self._top)
self._init_feedback(self._top)
self._init_grammar(self._top)
self._init_canvas(self._top)
# Initialize the parser.
self._parser.initialize(self._sent)
# Resize callback
self._canvas.bind('<Configure>', self._configure)
#########################################
## Initialization Helpers
#########################################
def _init_fonts(self, root):
# See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
self._sysfont = Font(font=Button()["font"])
root.option_add("*Font", self._sysfont)
# TWhat's our font size (default=same as sysfont)
self._size = IntVar(root)
self._size.set(self._sysfont.cget('size'))
self._boldfont = Font(family='helvetica', weight='bold',
size=self._size.get())
self._font = Font(family='helvetica',
size=self._size.get())
if self._size.get() < 0: big = self._size.get()-2
else: big = self._size.get()+2
self._bigfont = Font(family='helvetica', weight='bold',
size=big)
def _init_grammar(self, parent):
# Grammar view.
self._prodframe = listframe = Frame(parent)
self._prodframe.pack(fill='both', side='left', padx=2)
self._prodlist_label = Label(self._prodframe, font=self._boldfont,
text='Available Expansions')
self._prodlist_label.pack()
self._prodlist = Listbox(self._prodframe, selectmode='single',
relief='groove', background='white',
foreground='#909090', font=self._font,
selectforeground='#004040',
selectbackground='#c0f0c0')
self._prodlist.pack(side='right', fill='both', expand=1)
self._productions = list(self._parser.grammar().productions())
for production in self._productions:
self._prodlist.insert('end', (' %s' % production))
self._prodlist.config(height=min(len(self._productions), 25))
# Add a scrollbar if there are more than 25 productions.
if len(self._productions) > 25:
listscroll = Scrollbar(self._prodframe,
orient='vertical')
self._prodlist.config(yscrollcommand = listscroll.set)
listscroll.config(command=self._prodlist.yview)
listscroll.pack(side='left', fill='y')
# If they select a production, apply it.
self._prodlist.bind('<<ListboxSelect>>', self._prodlist_select)
def _init_bindings(self):
# Key bindings are a good thing.
self._top.bind('<Control-q>', self.destroy)
self._top.bind('<Control-x>', self.destroy)
self._top.bind('<Escape>', self.destroy)
self._top.bind('e', self.expand)
#self._top.bind('<Alt-e>', self.expand)
#self._top.bind('<Control-e>', self.expand)
self._top.bind('m', self.match)
self._top.bind('<Alt-m>', self.match)
self._top.bind('<Control-m>', self.match)
self._top.bind('b', self.backtrack)
self._top.bind('<Alt-b>', self.backtrack)
self._top.bind('<Control-b>', self.backtrack)
self._top.bind('<Control-z>', self.backtrack)
self._top.bind('<BackSpace>', self.backtrack)
self._top.bind('a', self.autostep)
#self._top.bind('<Control-a>', self.autostep)
self._top.bind('<Control-space>', self.autostep)
self._top.bind('<Control-c>', self.cancel_autostep)
self._top.bind('<space>', self.step)
self._top.bind('<Delete>', self.reset)
self._top.bind('<Control-p>', self.postscript)
#self._top.bind('<h>', self.help)
#self._top.bind('<Alt-h>', self.help)
self._top.bind('<Control-h>', self.help)
self._top.bind('<F1>', self.help)
#self._top.bind('<g>', self.toggle_grammar)
#self._top.bind('<Alt-g>', self.toggle_grammar)
#self._top.bind('<Control-g>', self.toggle_grammar)
self._top.bind('<Control-g>', self.edit_grammar)
self._top.bind('<Control-t>', self.edit_sentence)
def _init_buttons(self, parent):
# Set up the frames.
self._buttonframe = buttonframe = Frame(parent)
buttonframe.pack(fill='none', side='bottom', padx=3, pady=2)
Button(buttonframe, text='Step',
background='#90c0d0', foreground='black',
command=self.step,).pack(side='left')
Button(buttonframe, text='Autostep',
background='#90c0d0', foreground='black',
command=self.autostep,).pack(side='left')
Button(buttonframe, text='Expand', underline=0,
background='#90f090', foreground='black',
command=self.expand).pack(side='left')
Button(buttonframe, text='Match', underline=0,
background='#90f090', foreground='black',
command=self.match).pack(side='left')
Button(buttonframe, text='Backtrack', underline=0,
background='#f0a0a0', foreground='black',
command=self.backtrack).pack(side='left')
# Replace autostep...
# self._autostep_button = Button(buttonframe, text='Autostep',
# underline=0, command=self.autostep)
# self._autostep_button.pack(side='left')
def _configure(self, event):
self._autostep = 0
(x1, y1, x2, y2) = self._cframe.scrollregion()
y2 = event.height - 6
self._canvas['scrollregion'] = '%d %d %d %d' % (x1,y1,x2,y2)
self._redraw()
def _init_feedback(self, parent):
self._feedbackframe = feedbackframe = Frame(parent)
feedbackframe.pack(fill='x', side='bottom', padx=3, pady=3)
self._lastoper_label = Label(feedbackframe, text='Last Operation:',
font=self._font)
self._lastoper_label.pack(side='left')
lastoperframe = Frame(feedbackframe, relief='sunken', border=1)
lastoperframe.pack(fill='x', side='right', expand=1, padx=5)
self._lastoper1 = Label(lastoperframe, foreground='#007070',
background='#f0f0f0', font=self._font)
self._lastoper2 = Label(lastoperframe, anchor='w', width=30,
foreground='#004040', background='#f0f0f0',
font=self._font)
self._lastoper1.pack(side='left')
self._lastoper2.pack(side='left', fill='x', expand=1)
def _init_canvas(self, parent):
self._cframe = CanvasFrame(parent, background='white',
#width=525, height=250,
closeenough=10,
border=2, relief='sunken')
self._cframe.pack(expand=1, fill='both', side='top', pady=2)
canvas = self._canvas = self._cframe.canvas()
# Initially, there's no tree or text
self._tree = None
self._textwidgets = []
self._textline = None
def _init_menubar(self, parent):
menubar = Menu(parent)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(label='Reset Parser', underline=0,
command=self.reset, accelerator='Del')
filemenu.add_command(label='Print to Postscript', underline=0,
command=self.postscript, accelerator='Ctrl-p')
filemenu.add_command(label='Exit', underline=1,
command=self.destroy, accelerator='Ctrl-x')
menubar.add_cascade(label='File', underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
editmenu.add_command(label='Edit Grammar', underline=5,
command=self.edit_grammar,
accelerator='Ctrl-g')
editmenu.add_command(label='Edit Text', underline=5,
command=self.edit_sentence,
accelerator='Ctrl-t')
menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
rulemenu = Menu(menubar, tearoff=0)
rulemenu.add_command(label='Step', underline=1,
command=self.step, accelerator='Space')
rulemenu.add_separator()
rulemenu.add_command(label='Match', underline=0,
command=self.match, accelerator='Ctrl-m')
rulemenu.add_command(label='Expand', underline=0,
command=self.expand, accelerator='Ctrl-e')
rulemenu.add_separator()
rulemenu.add_command(label='Backtrack', underline=0,
command=self.backtrack, accelerator='Ctrl-b')
menubar.add_cascade(label='Apply', underline=0, menu=rulemenu)
viewmenu = Menu(menubar, tearoff=0)
viewmenu.add_checkbutton(label="Show Grammar", underline=0,
variable=self._show_grammar,
command=self._toggle_grammar)
viewmenu.add_separator()
viewmenu.add_radiobutton(label='Tiny', variable=self._size,
underline=0, value=10, command=self.resize)
viewmenu.add_radiobutton(label='Small', variable=self._size,
underline=0, value=12, command=self.resize)
viewmenu.add_radiobutton(label='Medium', variable=self._size,
underline=0, value=14, command=self.resize)
viewmenu.add_radiobutton(label='Large', variable=self._size,
underline=0, value=18, command=self.resize)
viewmenu.add_radiobutton(label='Huge', variable=self._size,
underline=0, value=24, command=self.resize)
menubar.add_cascade(label='View', underline=0, menu=viewmenu)
animatemenu = Menu(menubar, tearoff=0)
animatemenu.add_radiobutton(label="No Animation", underline=0,
variable=self._animation_frames,
value=0)
animatemenu.add_radiobutton(label="Slow Animation", underline=0,
variable=self._animation_frames,
value=10, accelerator='-')
animatemenu.add_radiobutton(label="Normal Animation", underline=0,
variable=self._animation_frames,
value=5, accelerator='=')
animatemenu.add_radiobutton(label="Fast Animation", underline=0,
variable=self._animation_frames,
value=2, accelerator='+')
menubar.add_cascade(label="Animate", underline=1, menu=animatemenu)
helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_command(label='About', underline=0,
command=self.about)
helpmenu.add_command(label='Instructions', underline=0,
command=self.help, accelerator='F1')
menubar.add_cascade(label='Help', underline=0, menu=helpmenu)
parent.config(menu=menubar)
#########################################
## Helper
#########################################
def _get(self, widget, treeloc):
for i in treeloc: widget = widget.subtrees()[i]
if isinstance(widget, TreeSegmentWidget):
widget = widget.label()
return widget
#########################################
## Main draw procedure
#########################################
def _redraw(self):
canvas = self._canvas
# Delete the old tree, widgets, etc.
if self._tree is not None:
self._cframe.destroy_widget(self._tree)
for twidget in self._textwidgets:
self._cframe.destroy_widget(twidget)
if self._textline is not None:
self._canvas.delete(self._textline)
# Draw the tree.
helv = ('helvetica', -self._size.get())
bold = ('helvetica', -self._size.get(), 'bold')
attribs = {'tree_color': '#000000', 'tree_width': 2,
'node_font': bold, 'leaf_font': helv,}
tree = self._parser.tree()
self._tree = tree_to_treesegment(canvas, tree, **attribs)
self._cframe.add_widget(self._tree, 30, 5)
# Draw the text.
helv = ('helvetica', -self._size.get())
bottom = y = self._cframe.scrollregion()[3]
self._textwidgets = [TextWidget(canvas, word, font=self._font)
for word in self._sent]
for twidget in self._textwidgets:
self._cframe.add_widget(twidget, 0, 0)
twidget.move(0, bottom-twidget.bbox()[3]-5)
y = min(y, twidget.bbox()[1])
# Draw a line over the text, to separate it from the tree.
self._textline = canvas.create_line(-5000, y-5, 5000, y-5, dash='.')
# Highlight appropriate nodes.
self._highlight_nodes()
self._highlight_prodlist()
# Make sure the text lines up.
self._position_text()
def _redraw_quick(self):
# This should be more-or-less sufficient after an animation.
self._highlight_nodes()
self._highlight_prodlist()
self._position_text()
def _highlight_nodes(self):
# Highlight the list of nodes to be checked.
bold = ('helvetica', -self._size.get(), 'bold')
for treeloc in self._parser.frontier()[:1]:
self._get(self._tree, treeloc)['color'] = '#20a050'
self._get(self._tree, treeloc)['font'] = bold
for treeloc in self._parser.frontier()[1:]:
self._get(self._tree, treeloc)['color'] = '#008080'
def _highlight_prodlist(self):
# Highlight the productions that can be expanded.
# Boy, too bad tkinter doesn't implement Listbox.itemconfig;
# that would be pretty useful here.
self._prodlist.delete(0, 'end')
expandable = self._parser.expandable_productions()
untried = self._parser.untried_expandable_productions()
productions = self._productions
for index in range(len(productions)):
if productions[index] in expandable:
if productions[index] in untried:
self._prodlist.insert(index, ' %s' % productions[index])
else:
self._prodlist.insert(index, ' %s (TRIED)' %
productions[index])
self._prodlist.selection_set(index)
else:
self._prodlist.insert(index, ' %s' % productions[index])
def _position_text(self):
# Line up the text widgets that are matched against the tree
numwords = len(self._sent)
num_matched = numwords - len(self._parser.remaining_text())
leaves = self._tree_leaves()[:num_matched]
xmax = self._tree.bbox()[0]
for i in range(0, len(leaves)):
widget = self._textwidgets[i]
leaf = leaves[i]
widget['color'] = '#006040'
leaf['color'] = '#006040'
widget.move(leaf.bbox()[0] - widget.bbox()[0], 0)
xmax = widget.bbox()[2] + 10
# Line up the text widgets that are not matched against the tree.
for i in range(len(leaves), numwords):
widget = self._textwidgets[i]
widget['color'] = '#a0a0a0'
widget.move(xmax - widget.bbox()[0], 0)
xmax = widget.bbox()[2] + 10
# If we have a complete parse, make everything green :)
if self._parser.currently_complete():
for twidget in self._textwidgets:
twidget['color'] = '#00a000'
# Move the matched leaves down to the text.
for i in range(0, len(leaves)):
widget = self._textwidgets[i]
leaf = leaves[i]
dy = widget.bbox()[1] - leaf.bbox()[3] - 10.0
dy = max(dy, leaf.parent().label().bbox()[3] - leaf.bbox()[3] + 10)
leaf.move(0, dy)
def _tree_leaves(self, tree=None):
if tree is None: tree = self._tree
if isinstance(tree, TreeSegmentWidget):
leaves = []
for child in tree.subtrees(): leaves += self._tree_leaves(child)
return leaves
else:
return [tree]
#########################################
## Button Callbacks
#########################################
def destroy(self, *e):
self._autostep = 0
if self._top is None: return
self._top.destroy()
self._top = None
def reset(self, *e):
self._autostep = 0
self._parser.initialize(self._sent)
self._lastoper1['text'] = 'Reset Application'
self._lastoper2['text'] = ''
self._redraw()
def autostep(self, *e):
if self._animation_frames.get() == 0:
self._animation_frames.set(2)
if self._autostep:
self._autostep = 0
else:
self._autostep = 1
self._step()
def cancel_autostep(self, *e):
#self._autostep_button['text'] = 'Autostep'
self._autostep = 0
# Make sure to stop auto-stepping if we get any user input.
def step(self, *e): self._autostep = 0; self._step()
def match(self, *e): self._autostep = 0; self._match()
def expand(self, *e): self._autostep = 0; self._expand()
def backtrack(self, *e): self._autostep = 0; self._backtrack()
def _step(self):
if self._animating_lock: return
# Try expanding, matching, and backtracking (in that order)
if self._expand(): pass
elif self._parser.untried_match() and self._match(): pass
elif self._backtrack(): pass
else:
self._lastoper1['text'] = 'Finished'
self._lastoper2['text'] = ''
self._autostep = 0
# Check if we just completed a parse.
if self._parser.currently_complete():
self._autostep = 0
self._lastoper2['text'] += ' [COMPLETE PARSE]'
def _expand(self, *e):
if self._animating_lock: return
old_frontier = self._parser.frontier()
rv = self._parser.expand()
if rv is not None:
self._lastoper1['text'] = 'Expand:'
self._lastoper2['text'] = rv
self._prodlist.selection_clear(0, 'end')
index = self._productions.index(rv)
self._prodlist.selection_set(index)
self._animate_expand(old_frontier[0])
return True
else:
self._lastoper1['text'] = 'Expand:'
self._lastoper2['text'] = '(all expansions tried)'
return False
def _match(self, *e):
if self._animating_lock: return
old_frontier = self._parser.frontier()
rv = self._parser.match()
if rv is not None:
self._lastoper1['text'] = 'Match:'
self._lastoper2['text'] = rv
self._animate_match(old_frontier[0])
return True
else:
self._lastoper1['text'] = 'Match:'
self._lastoper2['text'] = '(failed)'
return False
def _backtrack(self, *e):
if self._animating_lock: return
if self._parser.backtrack():
elt = self._parser.tree()
for i in self._parser.frontier()[0]:
elt = elt[i]
self._lastoper1['text'] = 'Backtrack'
self._lastoper2['text'] = ''
if isinstance(elt, Tree):
self._animate_backtrack(self._parser.frontier()[0])
else:
self._animate_match_backtrack(self._parser.frontier()[0])
return True
else:
self._autostep = 0
self._lastoper1['text'] = 'Finished'
self._lastoper2['text'] = ''
return False
def about(self, *e):
ABOUT = ("NLTK Recursive Descent Parser Application\n"+
"Written by Edward Loper")
TITLE = 'About: Recursive Descent Parser Application'
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE).show()
except:
ShowText(self._top, TITLE, ABOUT)
def help(self, *e):
self._autostep = 0
# The default font's not very legible; try using 'fixed' instead.
try:
ShowText(self._top, 'Help: Recursive Descent Parser Application',
(__doc__ or '').strip(), width=75, font='fixed')
except:
ShowText(self._top, 'Help: Recursive Descent Parser Application',
(__doc__ or '').strip(), width=75)
def postscript(self, *e):
self._autostep = 0
self._cframe.print_to_file()
def mainloop(self, *args, **kwargs):
"""
Enter the Tkinter mainloop. This function must be called if
this demo is created from a non-interactive program (e.g.
from a secript); otherwise, the demo will close as soon as
the script completes.
"""
if in_idle(): return
self._top.mainloop(*args, **kwargs)
def resize(self, size=None):
if size is not None: self._size.set(size)
size = self._size.get()
self._font.configure(size=-(abs(size)))
self._boldfont.configure(size=-(abs(size)))
self._sysfont.configure(size=-(abs(size)))
self._bigfont.configure(size=-(abs(size+2)))
self._redraw()
#########################################
## Expand Production Selection
#########################################
def _toggle_grammar(self, *e):
if self._show_grammar.get():
self._prodframe.pack(fill='both', side='left', padx=2,
after=self._feedbackframe)
self._lastoper1['text'] = 'Show Grammar'
else:
self._prodframe.pack_forget()
self._lastoper1['text'] = 'Hide Grammar'
self._lastoper2['text'] = ''
# def toggle_grammar(self, *e):
# self._show_grammar = not self._show_grammar
# if self._show_grammar:
# self._prodframe.pack(fill='both', expand='y', side='left',
# after=self._feedbackframe)
# self._lastoper1['text'] = 'Show Grammar'
# else:
# self._prodframe.pack_forget()
# self._lastoper1['text'] = 'Hide Grammar'
# self._lastoper2['text'] = ''
def _prodlist_select(self, event):
selection = self._prodlist.curselection()
if len(selection) != 1: return
index = int(selection[0])
old_frontier = self._parser.frontier()
production = self._parser.expand(self._productions[index])
if production:
self._lastoper1['text'] = 'Expand:'
self._lastoper2['text'] = production
self._prodlist.selection_clear(0, 'end')
self._prodlist.selection_set(index)
self._animate_expand(old_frontier[0])
else:
# Reset the production selections.
self._prodlist.selection_clear(0, 'end')
for prod in self._parser.expandable_productions():
index = self._productions.index(prod)
self._prodlist.selection_set(index)
#########################################
## Animation
#########################################
def _animate_expand(self, treeloc):
oldwidget = self._get(self._tree, treeloc)
oldtree = oldwidget.parent()
top = not isinstance(oldtree.parent(), TreeSegmentWidget)
tree = self._parser.tree()
for i in treeloc:
tree = tree[i]
widget = tree_to_treesegment(self._canvas, tree,
node_font=self._boldfont,
leaf_color='white',
tree_width=2, tree_color='white',
node_color='white',
leaf_font=self._font)
widget.label()['color'] = '#20a050'
(oldx, oldy) = oldtree.label().bbox()[:2]
(newx, newy) = widget.label().bbox()[:2]
widget.move(oldx-newx, oldy-newy)
if top:
self._cframe.add_widget(widget, 0, 5)
widget.move(30-widget.label().bbox()[0], 0)
self._tree = widget
else:
oldtree.parent().replace_child(oldtree, widget)
# Move the children over so they don't overlap.
# Line the children up in a strange way.
if widget.subtrees():
dx = (oldx + widget.label().width()/2 -
widget.subtrees()[0].bbox()[0]/2 -
widget.subtrees()[0].bbox()[2]/2)
for subtree in widget.subtrees(): subtree.move(dx, 0)
self._makeroom(widget)
if top:
self._cframe.destroy_widget(oldtree)
else:
oldtree.destroy()
colors = ['gray%d' % (10*int(10*x/self._animation_frames.get()))
for x in range(self._animation_frames.get(),0,-1)]
# Move the text string down, if necessary.
dy = widget.bbox()[3] + 30 - self._canvas.coords(self._textline)[1]
if dy > 0:
for twidget in self._textwidgets: twidget.move(0, dy)
self._canvas.move(self._textline, 0, dy)
self._animate_expand_frame(widget, colors)
def _makeroom(self, treeseg):
"""
Make sure that no sibling tree bbox's overlap.
"""
parent = treeseg.parent()
if not isinstance(parent, TreeSegmentWidget): return
index = parent.subtrees().index(treeseg)
# Handle siblings to the right
rsiblings = parent.subtrees()[index+1:]
if rsiblings:
dx = treeseg.bbox()[2] - rsiblings[0].bbox()[0] + 10
for sibling in rsiblings: sibling.move(dx, 0)
# Handle siblings to the left
if index > 0:
lsibling = parent.subtrees()[index-1]
dx = max(0, lsibling.bbox()[2] - treeseg.bbox()[0] + 10)
treeseg.move(dx, 0)
# Keep working up the tree.
self._makeroom(parent)
def _animate_expand_frame(self, widget, colors):
if len(colors) > 0:
self._animating_lock = 1
widget['color'] = colors[0]
for subtree in widget.subtrees():
if isinstance(subtree, TreeSegmentWidget):
subtree.label()['color'] = colors[0]
else:
subtree['color'] = colors[0]
self._top.after(50, self._animate_expand_frame,
widget, colors[1:])
else:
widget['color'] = 'black'
for subtree in widget.subtrees():
if isinstance(subtree, TreeSegmentWidget):
subtree.label()['color'] = 'black'
else:
subtree['color'] = 'black'
self._redraw_quick()
widget.label()['color'] = 'black'
self._animating_lock = 0
if self._autostep: self._step()
def _animate_backtrack(self, treeloc):
# Flash red first, if we're animating.
if self._animation_frames.get() == 0: colors = []
else: colors = ['#a00000', '#000000', '#a00000']
colors += ['gray%d' % (10*int(10*x/(self._animation_frames.get())))
for x in range(1, self._animation_frames.get()+1)]
widgets = [self._get(self._tree, treeloc).parent()]
for subtree in widgets[0].subtrees():
if isinstance(subtree, TreeSegmentWidget):
widgets.append(subtree.label())
else:
widgets.append(subtree)
self._animate_backtrack_frame(widgets, colors)
def _animate_backtrack_frame(self, widgets, colors):
if len(colors) > 0:
self._animating_lock = 1
for widget in widgets: widget['color'] = colors[0]
self._top.after(50, self._animate_backtrack_frame,
widgets, colors[1:])
else:
for widget in widgets[0].subtrees():
widgets[0].remove_child(widget)
widget.destroy()
self._redraw_quick()
self._animating_lock = 0
if self._autostep: self._step()
def _animate_match_backtrack(self, treeloc):
widget = self._get(self._tree, treeloc)
node = widget.parent().label()
dy = ((node.bbox()[3] - widget.bbox()[1] + 14) /
max(1, self._animation_frames.get()))
self._animate_match_backtrack_frame(self._animation_frames.get(),
widget, dy)
def _animate_match(self, treeloc):
widget = self._get(self._tree, treeloc)
dy = ((self._textwidgets[0].bbox()[1] - widget.bbox()[3] - 10.0) /
max(1, self._animation_frames.get()))
self._animate_match_frame(self._animation_frames.get(), widget, dy)
def _animate_match_frame(self, frame, widget, dy):
if frame > 0:
self._animating_lock = 1
widget.move(0, dy)
self._top.after(10, self._animate_match_frame,
frame-1, widget, dy)
else:
widget['color'] = '#006040'
self._redraw_quick()
self._animating_lock = 0
if self._autostep: self._step()
def _animate_match_backtrack_frame(self, frame, widget, dy):
if frame > 0:
self._animating_lock = 1
widget.move(0, dy)
self._top.after(10, self._animate_match_backtrack_frame,
frame-1, widget, dy)
else:
widget.parent().remove_child(widget)
widget.destroy()
self._animating_lock = 0
if self._autostep: self._step()
def edit_grammar(self, *e):
CFGEditor(self._top, self._parser.grammar(), self.set_grammar)
def set_grammar(self, grammar):
self._parser.set_grammar(grammar)
self._productions = list(grammar.productions())
self._prodlist.delete(0, 'end')
for production in self._productions:
self._prodlist.insert('end', (' %s' % production))
def edit_sentence(self, *e):
sentence = " ".join(self._sent)
title = 'Edit Text'
instr = 'Enter a new sentence to parse.'
EntryDialog(self._top, sentence, instr, self.set_sentence, title)
def set_sentence(self, sentence):
self._sent = sentence.split() #[XX] use tagged?
self.reset()
class DrtGlueDemo(object):
def __init__(self, examples):
# Set up the main window.
self._top = Tk()
self._top.title('DRT Glue Demo')
# Set up key bindings.
self._init_bindings()
# Initialize the fonts.self._error = None
self._init_fonts(self._top)
self._examples = examples
self._readingCache = [None for example in examples]
# The user can hide the grammar.
self._show_grammar = IntVar(self._top)
self._show_grammar.set(1)
# Set the data to None
self._curExample = -1
self._readings = []
self._drs = None
self._drsWidget = None
self._error = None
self._init_glue()
# Create the basic frames.
self._init_menubar(self._top)
self._init_buttons(self._top)
self._init_exampleListbox(self._top)
self._init_readingListbox(self._top)
self._init_canvas(self._top)
# Resize callback
self._canvas.bind('<Configure>', self._configure)
#########################################
## Initialization Helpers
#########################################
def _init_glue(self):
tagger = RegexpTagger([
('^(David|Mary|John)$', 'NNP'),
('^(walks|sees|eats|chases|believes|gives|sleeps|chases|persuades|tries|seems|leaves)$',
'VB'), ('^(go|order|vanish|find|approach)$', 'VB'),
('^(a)$', 'ex_quant'), ('^(every)$', 'univ_quant'),
('^(sandwich|man|dog|pizza|unicorn|cat|senator)$', 'NN'),
('^(big|gray|former)$', 'JJ'), ('^(him|himself)$', 'PRP')
])
depparser = MaltParser(tagger=tagger)
self._glue = DrtGlue(depparser=depparser, remove_duplicates=False)
def _init_fonts(self, root):
# See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
self._sysfont = Font(font=Button()["font"])
root.option_add("*Font", self._sysfont)
# TWhat's our font size (default=same as sysfont)
self._size = IntVar(root)
self._size.set(self._sysfont.cget('size'))
self._boldfont = Font(family='helvetica',
weight='bold',
size=self._size.get())
self._font = Font(family='helvetica', size=self._size.get())
if self._size.get() < 0: big = self._size.get() - 2
else: big = self._size.get() + 2
self._bigfont = Font(family='helvetica', weight='bold', size=big)
def _init_exampleListbox(self, parent):
self._exampleFrame = listframe = Frame(parent)
self._exampleFrame.pack(fill='both', side='left', padx=2)
self._exampleList_label = Label(self._exampleFrame,
font=self._boldfont,
text='Examples')
self._exampleList_label.pack()
self._exampleList = Listbox(self._exampleFrame,
selectmode='single',
relief='groove',
background='white',
foreground='#909090',
font=self._font,
selectforeground='#004040',
selectbackground='#c0f0c0')
self._exampleList.pack(side='right', fill='both', expand=1)
for example in self._examples:
self._exampleList.insert('end', (' %s' % example))
self._exampleList.config(height=min(len(self._examples), 25), width=40)
# Add a scrollbar if there are more than 25 examples.
if len(self._examples) > 25:
listscroll = Scrollbar(self._exampleFrame, orient='vertical')
self._exampleList.config(yscrollcommand=listscroll.set)
listscroll.config(command=self._exampleList.yview)
listscroll.pack(side='left', fill='y')
# If they select a example, apply it.
self._exampleList.bind('<<ListboxSelect>>', self._exampleList_select)
def _init_readingListbox(self, parent):
self._readingFrame = listframe = Frame(parent)
self._readingFrame.pack(fill='both', side='left', padx=2)
self._readingList_label = Label(self._readingFrame,
font=self._boldfont,
text='Readings')
self._readingList_label.pack()
self._readingList = Listbox(self._readingFrame,
selectmode='single',
relief='groove',
background='white',
foreground='#909090',
font=self._font,
selectforeground='#004040',
selectbackground='#c0f0c0')
self._readingList.pack(side='right', fill='both', expand=1)
# Add a scrollbar if there are more than 25 examples.
listscroll = Scrollbar(self._readingFrame, orient='vertical')
self._readingList.config(yscrollcommand=listscroll.set)
listscroll.config(command=self._readingList.yview)
listscroll.pack(side='right', fill='y')
self._populate_readingListbox()
def _populate_readingListbox(self):
# Populate the listbox with integers
self._readingList.delete(0, 'end')
for i in range(len(self._readings)):
self._readingList.insert('end', (' %s' % (i + 1)))
self._readingList.config(height=min(len(self._readings), 25), width=5)
# If they select a example, apply it.
self._readingList.bind('<<ListboxSelect>>', self._readingList_select)
def _init_bindings(self):
# Key bindings are a good thing.
self._top.bind('<Control-q>', self.destroy)
self._top.bind('<Control-x>', self.destroy)
self._top.bind('<Escape>', self.destroy)
self._top.bind('n', self.next)
self._top.bind('<space>', self.next)
self._top.bind('p', self.prev)
self._top.bind('<BackSpace>', self.prev)
def _init_buttons(self, parent):
# Set up the frames.
self._buttonframe = buttonframe = Frame(parent)
buttonframe.pack(fill='none', side='bottom', padx=3, pady=2)
Button(
buttonframe,
text='Prev',
background='#90c0d0',
foreground='black',
command=self.prev,
).pack(side='left')
Button(
buttonframe,
text='Next',
background='#90c0d0',
foreground='black',
command=self.next,
).pack(side='left')
def _configure(self, event):
self._autostep = 0
(x1, y1, x2, y2) = self._cframe.scrollregion()
y2 = event.height - 6
self._canvas['scrollregion'] = '%d %d %d %d' % (x1, y1, x2, y2)
self._redraw()
def _init_canvas(self, parent):
self._cframe = CanvasFrame(
parent,
background='white',
#width=525, height=250,
closeenough=10,
border=2,
relief='sunken')
self._cframe.pack(expand=1, fill='both', side='top', pady=2)
canvas = self._canvas = self._cframe.canvas()
# Initially, there's no tree or text
self._tree = None
self._textwidgets = []
self._textline = None
def _init_menubar(self, parent):
menubar = Menu(parent)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(label='Exit',
underline=1,
command=self.destroy,
accelerator='q')
menubar.add_cascade(label='File', underline=0, menu=filemenu)
actionmenu = Menu(menubar, tearoff=0)
actionmenu.add_command(label='Next',
underline=0,
command=self.next,
accelerator='n, Space')
actionmenu.add_command(label='Previous',
underline=0,
command=self.prev,
accelerator='p, Backspace')
menubar.add_cascade(label='Action', underline=0, menu=actionmenu)
optionmenu = Menu(menubar, tearoff=0)
optionmenu.add_checkbutton(label='Remove Duplicates',
underline=0,
variable=self._glue.remove_duplicates,
command=self._toggle_remove_duplicates,
accelerator='r')
menubar.add_cascade(label='Options', underline=0, menu=optionmenu)
viewmenu = Menu(menubar, tearoff=0)
viewmenu.add_radiobutton(label='Tiny',
variable=self._size,
underline=0,
value=10,
command=self.resize)
viewmenu.add_radiobutton(label='Small',
variable=self._size,
underline=0,
value=12,
command=self.resize)
viewmenu.add_radiobutton(label='Medium',
variable=self._size,
underline=0,
value=14,
command=self.resize)
viewmenu.add_radiobutton(label='Large',
variable=self._size,
underline=0,
value=18,
command=self.resize)
viewmenu.add_radiobutton(label='Huge',
variable=self._size,
underline=0,
value=24,
command=self.resize)
menubar.add_cascade(label='View', underline=0, menu=viewmenu)
helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_command(label='About', underline=0, command=self.about)
menubar.add_cascade(label='Help', underline=0, menu=helpmenu)
parent.config(menu=menubar)
#########################################
## Main draw procedure
#########################################
def _redraw(self):
canvas = self._canvas
# Delete the old DRS, widgets, etc.
if self._drsWidget is not None:
self._drsWidget.clear()
if self._drs:
self._drsWidget = DrsWidget(self._canvas, self._drs)
self._drsWidget.draw()
if self._error:
self._drsWidget = DrsWidget(self._canvas, self._error)
self._drsWidget.draw()
#########################################
## Button Callbacks
#########################################
def destroy(self, *e):
self._autostep = 0
if self._top is None: return
self._top.destroy()
self._top = None
def prev(self, *e):
selection = self._readingList.curselection()
readingListSize = self._readingList.size()
# there are readings
if readingListSize > 0:
# if one reading is currently selected
if len(selection) == 1:
index = int(selection[0])
# if it's on (or before) the first item
if index <= 0:
self._select_previous_example()
else:
self._readingList_store_selection(index - 1)
else:
#select its first reading
self._readingList_store_selection(readingListSize - 1)
else:
self._select_previous_example()
def _select_previous_example(self):
#if the current example is not the first example
if self._curExample > 0:
self._exampleList_store_selection(self._curExample - 1)
else:
#go to the last example
self._exampleList_store_selection(len(self._examples) - 1)
def next(self, *e):
selection = self._readingList.curselection()
readingListSize = self._readingList.size()
# if there are readings
if readingListSize > 0:
# if one reading is currently selected
if len(selection) == 1:
index = int(selection[0])
# if it's on (or past) the last item
if index >= (readingListSize - 1):
self._select_next_example()
else:
self._readingList_store_selection(index + 1)
else:
#select its first reading
self._readingList_store_selection(0)
else:
self._select_next_example()
def _select_next_example(self):
#if the current example is not the last example
if self._curExample < len(self._examples) - 1:
self._exampleList_store_selection(self._curExample + 1)
else:
#go to the first example
self._exampleList_store_selection(0)
def about(self, *e):
ABOUT = (
"NLTK Discourse Representation Theory (DRT) Glue Semantics Demo\n"
+ "Written by Daniel H. Garrette")
TITLE = 'About: NLTK DRT Glue Demo'
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE).show()
except:
ShowText(self._top, TITLE, ABOUT)
def postscript(self, *e):
self._autostep = 0
self._cframe.print_to_file()
def mainloop(self, *args, **kwargs):
"""
Enter the Tkinter mainloop. This function must be called if
this demo is created from a non-interactive program (e.g.
from a secript); otherwise, the demo will close as soon as
the script completes.
"""
if in_idle(): return
self._top.mainloop(*args, **kwargs)
def resize(self, size=None):
if size is not None: self._size.set(size)
size = self._size.get()
self._font.configure(size=-(abs(size)))
self._boldfont.configure(size=-(abs(size)))
self._sysfont.configure(size=-(abs(size)))
self._bigfont.configure(size=-(abs(size + 2)))
self._redraw()
def _toggle_remove_duplicates(self):
self._glue.remove_duplicates = not self._glue.remove_duplicates
self._exampleList.selection_clear(0, 'end')
self._readings = []
self._populate_readingListbox()
self._readingCache = [None for ex in self._examples]
self._curExample = -1
self._error = None
self._drs = None
self._redraw()
def _exampleList_select(self, event):
selection = self._exampleList.curselection()
if len(selection) != 1: return
self._exampleList_store_selection(int(selection[0]))
def _exampleList_store_selection(self, index):
self._curExample = index
example = self._examples[index]
self._exampleList.selection_clear(0, 'end')
if example:
cache = self._readingCache[index]
if cache:
if isinstance(cache, list):
self._readings = cache
self._error = None
else:
self._readings = []
self._error = cache
else:
try:
self._readings = self._glue.parse_to_meaning(example)
self._error = None
self._readingCache[index] = self._readings
except Exception as e:
self._readings = []
self._error = DrtVariableExpression(
Variable('Error: ' + str(e)))
self._readingCache[index] = self._error
#add a star to the end of the example
self._exampleList.delete(index)
self._exampleList.insert(index, (' %s *' % example))
self._exampleList.config(height=min(
len(self._examples), 25),
width=40)
self._populate_readingListbox()
self._exampleList.selection_set(index)
self._drs = None
self._redraw()
def _readingList_select(self, event):
selection = self._readingList.curselection()
if len(selection) != 1: return
self._readingList_store_selection(int(selection[0]))
def _readingList_store_selection(self, index):
reading = self._readings[index]
self._readingList.selection_clear(0, 'end')
if reading:
self._readingList.selection_set(index)
self._drs = reading.simplify().normalize().resolve_anaphora()
self._redraw()
class Game(Frame):
'''Top-level Frame managing top-level events. Interact directly with user.'''
############ geometry ###############
X_PADDING = 25
Y_PADDING = 25
SHIP_PANEL_WIDTH = 150
BUTTON_PANEL_HEIGHT = 50
BUTTON_PADDING = 5
WARNING_BAR_HEIGHT = 40
#####################################
########### states ##################
PLACING = 0
PLAYING = 1
GAME_OVER = 2
#####################################
############ colors #################
BACKGROUND_COLOR = "white"
WARNING_BACKGROUND = "khaki1"
#####################################
###### window titles and messages ################
GAME_OVER_POPUP_TITLE = "Game Over"
GAME_OVER_WIN_MSG = "You win!"
GAME_OVER_LOSE_MSG = "Game over. You lose."
WINDOW_TITLE_GAME_OVER = "Battleship (Game Over)"
WINDOW_TITLE_NORMAL = "Battleship"
##################################################
def __init__(self, master):
'''Create the UI for a game of battleship.'''
Frame.__init__(self, master)
self._create_ui()
# these are 'controller' elements that should really be in another class
self.ai = ShipAI(self.their_grid._model, self.my_grid._model)
self.reset()
def show_warning(self, msg, title=None):
'''Show a warning msg that a certain action is illegal.
Allows user to understand what's going on (i.e. why their action failed.
'''
tkMessageBox.showwarning(title, msg)
def _create_ui(self):
'''Create all UI elements for the game.'''
self._create_menu()
self._add_grids()
self._add_staging_panel()
self._addship_panels()
self._make_buttons()
self.config(height=self.Y_PADDING * 3 + self.my_grid.size +
self.BUTTON_PANEL_HEIGHT + self.WARNING_BAR_HEIGHT)
self.set_all_bgs(self.BACKGROUND_COLOR, self)
def _destroy_popup(self, event=None):
'''Process removal of the popup.'''
self.master.focus_set()
self._popup.grab_release()
self._popup.destroy()
def _show_rules(self):
'''Show the help dialog in a new window.'''
# load the help page
help_page_location = "help/rules.txt"
f = open(help_page_location, "r")
lines = f.read()
f.close()
tkMessageBox.showinfo("Rules", lines)
def show_keyboard_shortcuts(self):
'''Show a dialog box with the keyboard shortcuts.'''
# load the keyboard shortcuts page
ks_page_location = "help/keyboard_shortcuts.txt"
f = open(ks_page_location, "r")
lines = f.read()
f.close()
tkMessageBox.showinfo("Keyboard Shortcuts", lines)
def _create_menu(self):
'''Create the menu in the GUI.'''
menubar = Menu(self)
self.menus = {}
count = 0
self.file_menu = Menu(menubar, tearoff=0)
self.file_menu.add_command(label="New Game") #, command=self.reset)
self.menus["file_new_game"] = count
count += 1
self.file_menu.add_command(label="Save")
self.menus["file_save"] = count
count += 1
self.file_menu.add_command(label="Open")
self.menus["file_open"] = count
count += 1
self.file_menu.add_command(
label="Exit") #, command=self.master.destroy)
self.menus["file_exit"] = count
count += 1
menubar.add_cascade(label="File", menu=self.file_menu)
if battleship.GameController.DEV_FLAG:
count = 0
self.dev_menu = Menu(menubar, tearoff=0)
self.dev_menu.add_command(label="Auto Place")
self.menus["dev_auto_place"] = count
count += 1
self.dev_menu.add_command(label="Random Shot")
self.menus["dev_random_shot"] = count
count += 1
self.dev_menu.add_command(label="Auto Load")
self.menus["dev_auto_load"] = count
count += 1
menubar.add_cascade(label="Dev", menu=self.dev_menu)
help_menu = Menu(menubar, tearoff=0)
help_menu.add_command(label="Rules", command=self._show_rules)
help_menu.add_command(label="Keyboard Shortcuts",
command=self.show_keyboard_shortcuts)
menubar.add_cascade(label="Help", menu=help_menu)
self.master.config(menu=menubar)
def _add_staging_panel(self):
'''Create the placement/ship staging panel.'''
self.my_grid_frame.staging_panel = ShipPlacementPanel(self)
self.my_grid_frame.staging_panel.place(
x=self.X_PADDING * 2 + self.SHIP_PANEL_WIDTH + self.my_grid.size,
y=self.Y_PADDING)
def set_all_bgs(self, color, parent):
'''Set all the backgrounds of the child widgets to a certain color.'''
parent.config(background=color)
for child in parent.winfo_children():
self.set_all_bgs(color, child)
def _addship_panels(self):
'''Add a list of ships to select from, for adding.
Note that staging area must be added FIRST'''
############################## ShipPanel ########################
self.my_grid_frame.ship_panel = ShipPanel(self)
self.my_grid_frame.ship_panel.place(x=self.X_PADDING,
y=self.Y_PADDING * 4)
self.unselect_ship()
##################################################################
###################### ShipWarPanel ##############################
self.my_grid_frame._ship_war_panel = ShipWarPanel(self)
self.my_grid_frame._ship_war_panel.config(
height=self.my_grid_frame.winfo_height())
self.my_grid_frame._ship_war_panel.place(x=self.X_PADDING,
y=self.Y_PADDING * 2)
##################################################################
###################### EnemyShipPanel ############################
self.their_grid_frame.ship_panel = EnemyShipPanel(self)
self.their_grid_frame.ship_panel.place(x=self.my_grid.size * 2 +
self.X_PADDING * 3 +
self.SHIP_PANEL_WIDTH,
y=self.Y_PADDING * 4)
##################################################################
def unselect_ship(self):
'''Deselect all ships in the placement and staging GUIs.'''
self.my_grid_frame.ship_panel._ship_var.set(10)
self.my_grid_frame.staging_panel.reset()
def _hide_frame(self, frame):
'''Since you can't hide a frame per se, 'unpack' the frame's child widgets.
WARNING: this removes all packing directions for children'''
frame.lower()
for child in frame.winfo_children():
child.pack_forget()
def show_game_over_popup(self, winner):
'''Show a popup with a dialog saying the game is over, and showing the winning player.'''
msg = {
battleship.GameController.HUMAN_PLAYER: self.GAME_OVER_WIN_MSG,
battleship.GameController.AI_PLAYER: self.GAME_OVER_LOSE_MSG
}[winner]
tkMessageBox.showinfo(self.GAME_OVER_POPUP_TITLE, msg)
def process_placing_state(self):
'''Basic stuff to do during placing state.'''
self.config(width=self.X_PADDING * 3 + self.my_grid.size +
self.SHIP_PANEL_WIDTH +
self.my_grid_frame.staging_panel.CANVAS_WIDTH)
# show staging panel
self.my_grid_frame.staging_panel.pack_ui()
self.my_grid_frame.staging_panel.lift(aboveThis=self.their_grid_frame)
self.my_grid_frame.staging_panel.reset()
#re-pack
self.play_game_button.pack(side=LEFT,
padx=self.BUTTON_PADDING,
pady=self.BUTTON_PADDING)
self.play_game_button.config(state=DISABLED)
self._hide_frame(self.their_grid_frame)
self._hide_frame(self.my_grid_frame._ship_war_panel)
self.my_grid_frame.ship_panel.lift(
aboveThis=self.my_grid_frame._ship_war_panel)
# allow the AI to place ships
self.ai.place_ships()
def process_playing_state(self):
'''Basic stuff to do during playing state.'''
self.config(width=self.X_PADDING * 4 + self.my_grid.size * 2 +
self.SHIP_PANEL_WIDTH * 2)
self.my_grid._model.finalize()
self.their_grid._model.finalize()
self._hide_frame(self.my_grid_frame.staging_panel)
self.their_grid.config(state=NORMAL)
self.their_grid.enable()
# hide while playing
self.play_game_button.pack_forget()
self.unselect_ship()
self.my_grid_frame._ship_war_panel.pack_ui()
self.my_grid_frame._ship_war_panel.lift(
aboveThis=self.my_grid_frame.ship_panel)
# show opponent's grid
self.their_grid_frame.lift(aboveThis=self.my_grid_frame.staging_panel)
self.their_grid_label.pack()
self.their_grid.pack(side=LEFT, pady=20)
def process_game_over_state(self):
'''Change the view to reflect the game is over.'''
self.their_grid.disable()
self.master.title(self.WINDOW_TITLE_GAME_OVER)
def process_state(self):
'''Simple state controller to enable and disable certain widgets depending on the state.'''
if self._state == self.PLACING:
self.process_placing_state()
elif self._state == self.PLAYING:
self.process_playing_state()
elif self._state == self.GAME_OVER:
self.process_game_over_state()
def _add_grid_events(self):
'''Add events to the grids.'''
#self.their_grid.tag_bind("tile", "<Button-1>", self._shot)
pass
def _add_grids(self):
'''Create UI containers for the player grids.'''
self.my_grid_frame = PlayerGridFrame(self)
self.my_grid_frame.place(x=self.X_PADDING + self.SHIP_PANEL_WIDTH,
y=self.Y_PADDING)
l1 = Label(self.my_grid_frame, text="Your Grid")
l1.pack()
self.my_grid = ShipGrid(self.my_grid_frame, True)
self.my_grid.pack(side=LEFT, pady=20)
self.their_grid_frame = PlayerGridFrame(self)
self.their_grid_frame.place(x=self.my_grid.size + self.X_PADDING * 2 +
self.SHIP_PANEL_WIDTH,
y=self.Y_PADDING)
self.their_grid_label = Label(self.their_grid_frame,
text="Opponent's Grid")
self.their_grid_label.pack()
self.their_grid = ShipGrid(self.their_grid_frame, False)
self.their_grid.pack(side=LEFT, pady=20)
self._add_grid_events()
def reset(self):
'''New game!'''
self.master.title(self.WINDOW_TITLE_NORMAL)
# reset selected ship
self.unselect_ship()
# reset staging area
self.my_grid_frame.staging_panel.reset()
# reset indicators on ships in panels
self.my_grid_frame._ship_war_panel.reset()
for ship, button in self.my_grid_frame.ship_panel.ship_buttons.items():
button.config(foreground="black")
for x, y in self.my_grid.get_tiles():
self.reset_closure(x, y)
self._state = self.PLACING
self.process_state()
def reset_closure(self, x, y):
'''Add a placement event to the given tile.
TODO this is badly named'''
tag_id = self.my_grid._get_tile_name(x, y)
c = self.get_add_ship_callback()
f = lambda event: self.add_staged_ship(x, y, c)
self.my_grid.tag_bind(tag_id, "<Button-1>", f)
def add_staged_ship(self, x, y, callback):
'''Take the stage from the staging area, and place it on the board at position (x, y).
After ship has been placed, execute the function <callback>.'''
s = self.my_grid_frame.staging_panel.get_staged_ship()
if s is not None:
self.my_grid.add_ship(x, y, s.get_short_name(), s.is_vertical(),
callback)
def get_add_ship_callback(self):
'''Return the callback function for adding a ship.'''
return lambda: self.ship_set(self.my_grid_frame.ship_panel.
get_current_ship())
def _set_ship_sunk(self, ship):
'''This is a callback, to be called when a ship has been sunk.
TODO for now only called when one of MY ships is sunk.
UI shows that the given ship has been sunk.'''
self.my_grid_frame.ship_panel.set_sunk(ship)
def _set_ship_hit(self, ship):
'''This is a callback, to be called when a ship has been hit.
TODO for now only called when one of MY ships is hit.
UI shows that the given ship has been hit.'''
assert ship is not None
self.my_grid_frame._ship_war_panel.update(ship)
def ship_set(self, ship):
'''This is a callback, to be called when a ship has been placed.
UI shows that the given ship has been placed.'''
self._set_ships[ship] = True
self.my_grid_frame.ship_panel.set_placed(ship)
if all(self._set_ships.values()):
self.play_game_button.config(state=NORMAL)
def _make_buttons(self):
'''Create action buttons at the bottom.'''
button_row = self.my_grid.size + self.Y_PADDING + (
self.BUTTON_PANEL_HEIGHT - 2 * self.BUTTON_PADDING)
button_frame = Frame(self)
button_frame.place(x=self.my_grid.size - self.X_PADDING, y=button_row)
self.play_game_button = Button(button_frame, text="Play")
self.play_game_button.pack(side=LEFT,
padx=self.BUTTON_PADDING,
pady=self.BUTTON_PADDING)
def redraw(self):
'''Redraw the GUI, reloading all info from the model.
TODO this is a work-in-progress'''
# first, figure out the state
# are the ships placed? are they sunk?
grids = [self.my_grid._model, self.their_grid._model]
# set panels to the correct state
self.my_grid_frame.ship_panel.redraw(grids[0])
self.my_grid_frame._ship_war_panel.redraw(grids[0])
self.their_grid_frame.ship_panel.redraw(grids[1])
# set the grid to the correct state
self.my_grid.redraw(grids[0])
self.their_grid.redraw(grids[1])
if all([g.has_all_ships()
for g in grids]) and all([g.all_sunk() for g in grids]):
#TODO
# state is game over.
pass
elif all([g.has_all_ships() for g in grids]):
self.process_playing_state()
else:
#TODO
# state is placing
pass
return all_buttons, w, h
if __name__ == "__main__":
root = Tk()
root.title("Keyboard")
cnv = Canvas(root, bg="white")
cnv.pack(fill=BOTH, expand=True)
buttons, w, h = generate_buttons()
cnv.configure(width=w, height=h)
lb_code = Label(root)
lb_code.pack(fill=X, expand=False)
def resize():
# XXX: it's a bit less that ideally needed because of borders
root.geometry("%ux%u" % (w, h + lb_code.winfo_reqheight()))
root.after(10, resize)
id2b = bidict()
b2id = id2b.mirror
b2tid = {} # button index (position) to text item id
for b in buttons:
iid = cnv.create_rectangle(
b.x,
b.y,
class CollocationsView:
_BACKGROUND_COLOUR = "#FFF" # white
def __init__(self):
self.queue = q.Queue()
self.model = CollocationsModel(self.queue)
self.top = Tk()
self._init_top(self.top)
self._init_menubar()
self._init_widgets(self.top)
self.load_corpus(self.model.DEFAULT_CORPUS)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def _init_top(self, top):
top.geometry("550x650+50+50")
top.title("NLTK Collocations List")
top.bind("<Control-q>", self.destroy)
top.protocol("WM_DELETE_WINDOW", self.destroy)
top.minsize(550, 650)
def _init_widgets(self, parent):
self.main_frame = Frame(
parent,
dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
self._init_corpus_select(self.main_frame)
self._init_results_box(self.main_frame)
self._init_paging(self.main_frame)
self._init_status(self.main_frame)
self.main_frame.pack(fill="both", expand=True)
def _init_corpus_select(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.var = StringVar(innerframe)
self.var.set(self.model.DEFAULT_CORPUS)
Label(
innerframe,
justify=LEFT,
text=" Corpus: ",
background=self._BACKGROUND_COLOUR,
padx=2,
pady=1,
border=0,
).pack(side="left")
other_corpora = list(self.model.CORPORA.keys()).remove(
self.model.DEFAULT_CORPUS)
om = OptionMenu(innerframe,
self.var,
self.model.DEFAULT_CORPUS,
command=self.corpus_selected,
*self.model.non_default_corpora())
om["borderwidth"] = 0
om["highlightthickness"] = 1
om.pack(side="left")
innerframe.pack(side="top", fill="x", anchor="n")
def _init_status(self, parent):
self.status = Label(
parent,
justify=LEFT,
relief=SUNKEN,
background=self._BACKGROUND_COLOUR,
border=0,
padx=1,
pady=0,
)
self.status.pack(side="top", anchor="sw")
def _init_menubar(self):
self._result_size = IntVar(self.top)
menubar = Menu(self.top)
filemenu = Menu(menubar, tearoff=0, borderwidth=0)
filemenu.add_command(label="Exit",
underline=1,
command=self.destroy,
accelerator="Ctrl-q")
menubar.add_cascade(label="File", underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
rescntmenu = Menu(editmenu, tearoff=0)
rescntmenu.add_radiobutton(
label="20",
variable=self._result_size,
underline=0,
value=20,
command=self.set_result_size,
)
rescntmenu.add_radiobutton(
label="50",
variable=self._result_size,
underline=0,
value=50,
command=self.set_result_size,
)
rescntmenu.add_radiobutton(
label="100",
variable=self._result_size,
underline=0,
value=100,
command=self.set_result_size,
)
rescntmenu.invoke(1)
editmenu.add_cascade(label="Result Count",
underline=0,
menu=rescntmenu)
menubar.add_cascade(label="Edit", underline=0, menu=editmenu)
self.top.config(menu=menubar)
def set_result_size(self, **kwargs):
self.model.result_count = self._result_size.get()
def _init_results_box(self, parent):
innerframe = Frame(parent)
i1 = Frame(innerframe)
i2 = Frame(innerframe)
vscrollbar = Scrollbar(i1, borderwidth=1)
hscrollbar = Scrollbar(i2, borderwidth=1, orient="horiz")
self.results_box = Text(
i1,
font=Font(family="courier", size="16"),
state="disabled",
borderwidth=1,
yscrollcommand=vscrollbar.set,
xscrollcommand=hscrollbar.set,
wrap="none",
width="40",
height="20",
exportselection=1,
)
self.results_box.pack(side="left", fill="both", expand=True)
vscrollbar.pack(side="left", fill="y", anchor="e")
vscrollbar.config(command=self.results_box.yview)
hscrollbar.pack(side="left", fill="x", expand=True, anchor="w")
hscrollbar.config(command=self.results_box.xview)
# there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
Label(i2, text=" ",
background=self._BACKGROUND_COLOUR).pack(side="left", anchor="e")
i1.pack(side="top", fill="both", expand=True, anchor="n")
i2.pack(side="bottom", fill="x", anchor="s")
innerframe.pack(side="top", fill="both", expand=True)
def _init_paging(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.prev = prev = Button(
innerframe,
text="Previous",
command=self.previous,
width="10",
borderwidth=1,
highlightthickness=1,
state="disabled",
)
prev.pack(side="left", anchor="center")
self.next = next = Button(
innerframe,
text="Next",
command=self.__next__,
width="10",
borderwidth=1,
highlightthickness=1,
state="disabled",
)
next.pack(side="right", anchor="center")
innerframe.pack(side="top", fill="y")
self.reset_current_page()
def reset_current_page(self):
self.current_page = -1
def _poll(self):
try:
event = self.queue.get(block=False)
except q.Empty:
pass
else:
if event == CORPUS_LOADED_EVENT:
self.handle_corpus_loaded(event)
elif event == ERROR_LOADING_CORPUS_EVENT:
self.handle_error_loading_corpus(event)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def handle_error_loading_corpus(self, event):
self.status["text"] = "Error in loading " + self.var.get()
self.unfreeze_editable()
self.clear_results_box()
self.freeze_editable()
self.reset_current_page()
def handle_corpus_loaded(self, event):
self.status["text"] = self.var.get() + " is loaded"
self.unfreeze_editable()
self.clear_results_box()
self.reset_current_page()
# self.next()
collocations = self.model.next(self.current_page + 1)
self.write_results(collocations)
self.current_page += 1
def corpus_selected(self, *args):
new_selection = self.var.get()
self.load_corpus(new_selection)
def previous(self):
self.freeze_editable()
collocations = self.model.prev(self.current_page - 1)
self.current_page = self.current_page - 1
self.clear_results_box()
self.write_results(collocations)
self.unfreeze_editable()
def __next__(self):
self.freeze_editable()
collocations = self.model.next(self.current_page + 1)
self.clear_results_box()
self.write_results(collocations)
self.current_page += 1
self.unfreeze_editable()
def load_corpus(self, selection):
if self.model.selected_corpus != selection:
self.status["text"] = "Loading " + selection + "..."
self.freeze_editable()
self.model.load_corpus(selection)
def freeze_editable(self):
self.prev["state"] = "disabled"
self.next["state"] = "disabled"
def clear_results_box(self):
self.results_box["state"] = "normal"
self.results_box.delete("1.0", END)
self.results_box["state"] = "disabled"
def fire_event(self, event):
# Firing an event so that rendering of widgets happen in the mainloop thread
self.top.event_generate(event, when="tail")
def destroy(self, *e):
if self.top is None:
return
self.top.after_cancel(self.after)
self.top.destroy()
self.top = None
def mainloop(self, *args, **kwargs):
if in_idle():
return
self.top.mainloop(*args, **kwargs)
def unfreeze_editable(self):
self.set_paging_button_states()
def set_paging_button_states(self):
if self.current_page == -1 or self.current_page == 0:
self.prev["state"] = "disabled"
else:
self.prev["state"] = "normal"
if self.model.is_last_page(self.current_page):
self.next["state"] = "disabled"
else:
self.next["state"] = "normal"
def write_results(self, results):
self.results_box["state"] = "normal"
row = 1
for each in results:
self.results_box.insert(
str(row) + ".0", each[0] + " " + each[1] + "\n")
row += 1
self.results_box["state"] = "disabled"
class Task(Frame):
def __init__(self,
master=None,
work=WORK_TM,
rest=REST_TM,
server=HOST,
port=PORT,
mode='fascist'):
"""create the task widget and get things started"""
self.lid_state = "open"
self.lid_time = time.time()
self.interrupt_count = 0
self.then = 0.0
self.old_work = 0.0
self.state = "working"
self.cancel_rest = 0
self.log = logging.getLogger(__name__)
Frame.__init__(*(self, master))
self.mode = StringVar()
self.mode.set(mode) # "fascist" or "friendly"
# create main interactor window
self.workmeter = Meter(self, background="grey50")
self.workmeter.pack()
self.work_frame = Frame(self)
self.work_frame.pack()
self.work_label = Label(self.work_frame, text="Work time:")
self.work_label.pack(side=LEFT)
self.work_scl = Scale(self.work_frame,
orient=HORIZONTAL,
from_=1,
to=max(45, work),
command=self.reset_duration)
self.work_scl.set(work)
self.work_scl.pack(side=LEFT)
self.rest_frame = Frame(self)
self.rest_frame.pack()
self.rest_label = Label(self.rest_frame, text="Rest time:")
self.rest_label.pack(side=LEFT)
self.rest_scl = Scale(self.rest_frame,
orient=HORIZONTAL,
from_=1,
to=max(15, rest),
command=self.reset_duration)
self.rest_scl.set(rest)
self.rest_scl.pack(side=LEFT)
self.radio_frame = Frame(self)
self.radio_frame.pack()
self.dictator = Radiobutton(self.radio_frame,
text="Fascist",
variable=self.mode,
value="fascist")
self.friend = Radiobutton(self.radio_frame,
text="Friendly",
variable=self.mode,
value="friendly")
self.dictator.pack(side=LEFT)
self.friend.pack(side=LEFT)
self.button_frame = Frame(self)
self.button_frame.pack()
self.restb = Button(self.button_frame, text="Rest", command=self.rest)
self.restb.pack(side=LEFT)
self.stopb = Button(self.button_frame, text="Quit", command=self.quit)
self.stopb.pack(side=LEFT)
self.helpb = Button(self.button_frame, text="Help", command=self.help)
self.helpb.pack(side=LEFT)
# create the cover window
self.cover = Toplevel(background="black")
self.cover.withdraw()
# user can't resize it
self.cover.resizable(0, 0)
# when displayed, it should cover all displays
(w, h) = (self.winfo_vrootwidth(), self.winfo_vrootheight())
if self.log.getEffectiveLevel() <= logging.DEBUG:
# but we reduce it while debugging
w, h = (w / 5, h / 5)
self.cover.geometry("%dx%d+0+0" % (w, h))
# and it's undecorated
self.cover.overrideredirect(1)
# cover contains a frame with rest message and meter
f = Frame(self.cover, background="black")
self.restnote = Label(f, background="black", foreground="white")
self.restmeter = Meter(f, background="grey50", height=10, width=200)
self.restnote.pack(pady=2)
self.restmeter.pack(fill="x", expand=1, pady=2)
self.cancel_button = Button(f, text="Cancel Rest", command=self.cancel)
f.pack()
# initialize interrupt information
self.linux_interrupts = 0
# used by the default activity checker
self.mouse = None
self.setup_server(server, port)
# self.last_int is the last time the server was alerted to activity
# self.now is the server's notion of the current time
# idle time is therefore max(0, self.now-self.last_int)
(self.last_int, _w_time, _r_time, self.now) = self.server.get()
self.idle = max(0, self.now - self.last_int)
self.bgcolor = self["background"]
# start the ball rolling
self.after(CHK_INT, self.tick)
self.work()
def setup_server(self, server, port):
if server is None:
self.server = collector.Collector()
self.log.debug("using private Collector()")
return
self.server = xmlrpc_client.ServerProxy("http://%s:%d" %
(server, port))
try:
self.server.get()
self.log.debug("found existing server")
except socket.error:
if server in ["", "localhost", "127.0.0.1"]:
cmd = "watch-server.py"
args = ["-p", "%d" % port]
pid = os.spawnvp(os.P_NOWAIT, cmd, args)
# wait briefly for server to start
time.sleep(0.2)
self.server = xmlrpc_client.ServerProxy("http://%s:%d" %
(server, port),
allow_none=True)
# try connecting
for _i in range(10):
try:
self.server.get()
atexit.register(os.kill, pid, signal.SIGHUP)
self.log.debug("spawned server")
return
except socket.error:
time.sleep(0.1)
# nothing else worked, so fall back to an embedded collector
self.server = collector.Collector()
self.log.debug("using private Collector()")
def reset_duration(self, _dummy=None):
"""reset work/rest interval lengths to current scale values"""
wtime = self.work_scl.get()
self.workmeter.set_range(self.workmeter.min_val,
self.workmeter.min_val + wtime * 60)
self.restmeter.set_range(
self.restmeter.min_val,
self.restmeter.min_val + self.rest_scl.get() * 60)
# only time the user can fiddle the work/rest meters is during
# the work phase, so the only scale change that matters for extending
# or contracting the end of the interval is the work scale
try:
delta = wtime - self.old_work
except AttributeError:
delta = 0
self.log.debug(__("then: {} delta: {}m", hhmm(self.then), delta))
self.then = self.then + delta * 60
self.old_work = wtime
self.server.put(self.work_scl.get(), self.rest_scl.get())
def work(self):
"""start the work period"""
self.reset_warning()
self.restmeter.reset()
self.state = "working"
self.then = self.now + self.work_scl.get() * 60
self.log.debug(__("work: then: {}", hhmm(self.then)))
self.workmeter.set_range(self.now, self.then)
self.workmeter.reset()
self.cover.withdraw()
def warn_work_end(self):
"""alert user that work period is almost up"""
self.set_background("yellow")
def reset_warning(self):
"""back to plain old grey bg"""
self.set_background(self.bgcolor)
def set_background(self, color):
for w in (self, self.work_scl, self.rest_scl, self.dictator,
self.friend, self.button_frame, self.stopb, self.restb,
self.helpb, self.work_frame, self.rest_frame,
self.radio_frame, self.work_label, self.rest_label):
w["background"] = color
def rest(self):
"""overlay the screen with a window, preventing typing"""
self.cancel_rest = 0
self.workmeter.reset()
self.state = "resting"
# the user may not have been typing or mousing right up to the
# work/rest threshold - give credit for whatever rest time has
# already been accumulated
resttime = self.rest_scl.get() * 60 - (self.now - self.last_int)
if resttime < 0:
self.work()
return
mins, secs = divmod(resttime, 60)
self.then = self.now + resttime
self.cover.deiconify()
self.cover.tkraise()
resttext = ("Rest for %dm%02ds please..." % (mins, secs))
self.restnote.configure(text=resttext)
self.restmeter.set_range(self.now, self.then)
self.restmeter.reset()
if self.mode.get() == "friendly":
self.cancel_button.pack(pady=2)
else:
self.cancel_button.pack_forget()
self.log.debug(
__("rest: state: {} now: {} then: {} active? {}", self.state,
hhmm(self.now), hhmm(self.then), self.check_activity()))
def help(self):
Dialog(self.master, title="Help", content=usageText())
### ---- define activity checkers here ---- ###
# keyed by sys.platform or "default" to return a method that checks
# for mouse/keyboard activity
_dispatch = {}
def check_activity(self):
"""check mouse/keyboard activity info
where possible, call platform-dependent routine to get mouse and
keyboard info, otherwise, just return mouse info
in all cases, the value returned should evaluate to False if no
activity was detected.
"""
active = False
if self.lid_state == "open":
dflt = self._dispatch["default"]
checker = self._dispatch.get(sys.platform, dflt)
active = checker(self)
if active:
self.server.tick()
return active
def check_mouse(self):
"""default checker, just compares current w/ saved mouse pos"""
mouse = self.winfo_pointerxy()
try:
return mouse != self.mouse
finally:
self.mouse = mouse
_dispatch["default"] = check_mouse
def get_linux_interrupts(self):
count = 0
# Can't seem to find mouse interrupts, so for now, just watch
# keyboard and mix add get_mouseinfo() output as a substitute for
# mouse interrupts.
last_count = self.interrupt_count
for line in open("/proc/interrupts"):
fields = line.split()
if fields[0] == "1:":
count = sum(int(fields[n]) for n in range(1, 8))
self.interrupt_count = count
break
return self.check_mouse() or self.interrupt_count > last_count
_dispatch["linux"] = get_linux_interrupts
def check_lid_state(self):
if os.path.exists(LID_STATE):
for line in open(LID_STATE):
fields = line.strip().split()
if fields[0] == "state:":
return self.maybe_change_lid_state(fields[1])
else:
self.lid_state = "open"
return 0
def maybe_change_lid_state(self, state):
"""Take necessary action when lid state changes.
Return True if lid state changed.
"""
idle = 0
if state != self.lid_state:
self.log.info(__("lid state changed: {}", state))
lid_time = time.time()
if state == "open":
idle = lid_time - self.lid_time
self.log.info(__("idle for {}s", idle))
self.lid_state = state
self.lid_time = lid_time
return idle
def tick(self):
"""perform periodic checks for activity or state switch"""
try:
self._tick()
finally:
self.after(CHK_INT, self.tick)
def _tick(self):
(self.last_int, work_time, rest_time, self.now) = self.server.get()
# check for mouse or keyboard activity
idle_time = self.check_lid_state()
if idle_time > rest_time * 60:
self.log.info(
__("The lid is up! Back to work: {}", hhmm(idle_time)))
self.work()
return
active = self.check_activity()
idle = max(0, self.now - self.last_int)
# check to see if the work/rest scales got adjusted by another
# watch instance
if (self.work_scl.get() != work_time
or self.rest_scl.get() != rest_time):
self.work_scl.set(work_time)
self.rest_scl.set(rest_time)
self.log.debug(
__("work: state: {} now: {} then: {} active? {}", self.state,
hhmm(self.now), hhmm(self.then), active))
if self.state == "resting":
# user explicitly cancelled the rest or the idle period
# exceeded the desired rest time
if self.cancel_rest or idle > rest_time * 60:
self.work()
return
# make sure the rest window is as far up the window stack as
# possible
self.cover.tkraise()
if idle <= self.idle:
# user moved something - extend rest by a second
self.then += 1
self.restmeter.set_range(self.restmeter.min_val, self.then)
self.restmeter.set(self.now)
self.idle = idle
# update message to reflect rest time remaining
timeleft = int(round(self.then - self.now))
minleft, secleft = divmod(timeleft, 60)
resttext = ("Rest for %dm%02ds please..." % (minleft, secleft))
self.restnote.configure(text=resttext)
else:
# if it's been at least the length of the rest interval
# since last interrupt, reset the work interval
if idle >= rest_time * 60:
self.work()
return
self.idle = idle
if self.now > self.then:
# work period expired
self.rest()
return
if self.now + 60 > self.then:
# work period nearly expired - warn user
self.warn_work_end()
else:
self.reset_warning()
self.restmeter.set(self.now)
self.workmeter.set(self.now)
def cancel(self):
self.cancel_rest = 1
class ShipPlacementPanel(Frame):
'''A frame which contains visualizations for placing ships.'''
# the size of a single tile
SHIP_TILE_SIZE = 20
SHIP_TILE_COLOR = "steel blue"
TAG = "staging_ship"
CANVAS_WIDTH = 150
def __init__(self, master):
'''Create a new panel with the given parent.'''
Frame.__init__(self, master)
self._ship_name = StringVar()
self._create_ui()
self.reset()
def reset(self):
'''Alias for unstage_all'''
self.unstage_all()
def _create_ui(self):
'''Create all UI objects.'''
#self._tl = Label(self, text="Staged Ship", f)
self._sl = Label(self, textvariable=self._ship_name)
self._c = Canvas(self)
self._c.config(width=self.CANVAS_WIDTH)
self._rb = Button(self,
text="Rotate",
command=self.rotate_current_ship)
self.pack_ui()
def pack_ui(self):
'''(re) pack the UI.
Created mostly to counter hiding by unpacking.'''
#self._tl.pack()
#self._tl.grid(row=0)
self._sl.pack()
self._sl.grid(row=1, pady=10)
self._c.pack()
self._c.grid(row=2, pady=15)
self._rb.pack()
self._rb.grid(row=3)
def unstage_all(self):
'''Remove all ships from staging area.
Clear all staging preferences.'''
self._staged_ship = None
self._clear_staging_grid()
self._ship_name.set("")
self._disable_rotate_button()
def _clear_staging_grid(self):
'''Remove previously staged ships from staging grid.'''
for item in self._c.find_withtag(self.TAG):
self._c.delete(item)
def _draw_staged_ship(self):
'''Draw the currently staged ship.'''
# remove prior drawings
self._clear_staging_grid()
if self._staged_ship.is_vertical():
x = 0
x_pad = (self._c.winfo_width() - self.SHIP_TILE_SIZE) / 2.0
y_pad = (self._c.winfo_height() -
self.SHIP_TILE_SIZE * self._staged_ship.get_size()) / 2.0
for y in range(self._staged_ship.get_size()):
self._draw_ship_tile(x_pad + x * self.SHIP_TILE_SIZE,
y_pad + y * self.SHIP_TILE_SIZE)
else:
y = 0
x_pad = (self._c.winfo_width() -
self.SHIP_TILE_SIZE * self._staged_ship.get_size()) / 2.0
y_pad = (self._c.winfo_height() - self.SHIP_TILE_SIZE) / 2.0
for x in range(self._staged_ship.get_size()):
self._draw_ship_tile(x_pad + x * self.SHIP_TILE_SIZE,
y_pad + y * self.SHIP_TILE_SIZE)
def add_ship(self, s):
'''Alias for stage ship.'''
self.stage_ship(s)
def _disable_rotate_button(self):
'''Disable / hide the rotate button.'''
self._rb.grid_forget()
def _enable_rotate_button(self):
'''Enable / show the rotate button.'''
self._rb.grid(row=3)
def stage_ship(self, s):
'''Add a ship to the staging area.
Display what it would look like on the grid.
Create support for accidentally adding ship that isn't ready'''
if s is not None:
self._staged_ship = s
self._ship_name.set(s.get_full_name().title())
self._draw_staged_ship()
self._enable_rotate_button()
else:
self._disable_rotate_button()
def _draw_ship_tile(self, x, y):
'''Draw a single tile for the ship at given coordinates.'''
self._c.create_rectangle(x,
y,
x + self.SHIP_TILE_SIZE,
y + self.SHIP_TILE_SIZE,
fill=self.SHIP_TILE_COLOR,
outline="black",
tag=self.TAG)
def get_staged_ship(self):
'''Return the currently staged ship.'''
return self._staged_ship
def rotate_current_ship(self):
'''Rotate the currently staged ship.'''
if self._staged_ship is not None:
self._staged_ship.rotate()
self._draw_staged_ship()
def init_gui(self):
"""init helper"""
window = PanedWindow(self.root, orient="vertical")
window.pack(side=TOP, fill=BOTH, expand=True)
top_pane = Frame(window)
window.add(top_pane)
mid_pane = Frame(window)
window.add(mid_pane)
bottom_pane = Frame(window)
window.add(bottom_pane)
#setting up frames
top_frame = Frame(top_pane)
mid_frame = Frame(top_pane)
history_frame = Frame(top_pane)
radio_frame = Frame(mid_pane)
rating_frame = Frame(mid_pane)
res_frame = Frame(mid_pane)
check_frame = Frame(bottom_pane)
msg_frame = Frame(bottom_pane)
btn_frame = Frame(bottom_pane)
top_frame.pack(side=TOP, fill=X)
mid_frame.pack(side=TOP, fill=X)
history_frame.pack(side=TOP, fill=BOTH, expand=True)
radio_frame.pack(side=TOP, fill=X)
rating_frame.pack(side=TOP, fill=X)
res_frame.pack(side=TOP, fill=BOTH, expand=True)
check_frame.pack(side=TOP, fill=X)
msg_frame.pack(side=TOP, fill=BOTH, expand=True)
btn_frame.pack(side=TOP, fill=X)
# Binding F5 application-wide to run lint
self.root.bind('<F5>', self.run_lint)
#Message ListBox
rightscrollbar = Scrollbar(msg_frame)
rightscrollbar.pack(side=RIGHT, fill=Y)
bottomscrollbar = Scrollbar(msg_frame, orient=HORIZONTAL)
bottomscrollbar.pack(side=BOTTOM, fill=X)
self.lb_messages = Listbox(
msg_frame,
yscrollcommand=rightscrollbar.set,
xscrollcommand=bottomscrollbar.set,
bg="white")
self.lb_messages.bind("<Double-Button-1>", self.show_sourcefile)
self.lb_messages.pack(expand=True, fill=BOTH)
rightscrollbar.config(command=self.lb_messages.yview)
bottomscrollbar.config(command=self.lb_messages.xview)
#History ListBoxes
rightscrollbar2 = Scrollbar(history_frame)
rightscrollbar2.pack(side=RIGHT, fill=Y)
bottomscrollbar2 = Scrollbar(history_frame, orient=HORIZONTAL)
bottomscrollbar2.pack(side=BOTTOM, fill=X)
self.showhistory = Listbox(
history_frame,
yscrollcommand=rightscrollbar2.set,
xscrollcommand=bottomscrollbar2.set,
bg="white")
self.showhistory.pack(expand=True, fill=BOTH)
rightscrollbar2.config(command=self.showhistory.yview)
bottomscrollbar2.config(command=self.showhistory.xview)
self.showhistory.bind('<Double-Button-1>', self.select_recent_file)
self.set_history_window()
#status bar
self.status = Label(self.root, text="", bd=1, relief=SUNKEN, anchor=W)
self.status.pack(side=BOTTOM, fill=X)
#labelbl_ratingls
lbl_rating_label = Label(rating_frame, text='Rating:')
lbl_rating_label.pack(side=LEFT)
lbl_rating = Label(rating_frame, textvariable=self.rating)
lbl_rating.pack(side=LEFT)
Label(mid_frame, text='Recently Used:').pack(side=LEFT)
Label(top_frame, text='Module or package').pack(side=LEFT)
#file textbox
self.txt_module = Entry(top_frame, background='white')
self.txt_module.bind('<Return>', self.run_lint)
self.txt_module.pack(side=LEFT, expand=True, fill=X)
#results box
rightscrollbar = Scrollbar(res_frame)
rightscrollbar.pack(side=RIGHT, fill=Y)
bottomscrollbar = Scrollbar(res_frame, orient=HORIZONTAL)
bottomscrollbar.pack(side=BOTTOM, fill=X)
self.results = Listbox(
res_frame,
yscrollcommand=rightscrollbar.set,
xscrollcommand=bottomscrollbar.set,
bg="white", font="Courier")
self.results.pack(expand=True, fill=BOTH, side=BOTTOM)
rightscrollbar.config(command=self.results.yview)
bottomscrollbar.config(command=self.results.xview)
#buttons
Button(top_frame, text='Open', command=self.file_open).pack(side=LEFT)
Button(top_frame, text='Open Package',
command=(lambda: self.file_open(package=True))).pack(side=LEFT)
self.btnRun = Button(top_frame, text='Run', command=self.run_lint)
self.btnRun.pack(side=LEFT)
Button(btn_frame, text='Quit', command=self.quit).pack(side=BOTTOM)
#radio buttons
self.information_box = IntVar()
self.convention_box = IntVar()
self.refactor_box = IntVar()
self.warning_box = IntVar()
self.error_box = IntVar()
self.fatal_box = IntVar()
i = Checkbutton(check_frame, text="Information", fg=COLORS['(I)'],
variable=self.information_box, command=self.refresh_msg_window)
c = Checkbutton(check_frame, text="Convention", fg=COLORS['(C)'],
variable=self.convention_box, command=self.refresh_msg_window)
r = Checkbutton(check_frame, text="Refactor", fg=COLORS['(R)'],
variable=self.refactor_box, command=self.refresh_msg_window)
w = Checkbutton(check_frame, text="Warning", fg=COLORS['(W)'],
variable=self.warning_box, command=self.refresh_msg_window)
e = Checkbutton(check_frame, text="Error", fg=COLORS['(E)'],
variable=self.error_box, command=self.refresh_msg_window)
f = Checkbutton(check_frame, text="Fatal", fg=COLORS['(F)'],
variable=self.fatal_box, command=self.refresh_msg_window)
i.select()
c.select()
r.select()
w.select()
e.select()
f.select()
i.pack(side=LEFT)
c.pack(side=LEFT)
r.pack(side=LEFT)
w.pack(side=LEFT)
e.pack(side=LEFT)
f.pack(side=LEFT)
#check boxes
self.box = StringVar()
# XXX should be generated
report = Radiobutton(
radio_frame, text="Report", variable=self.box,
value="Report", command=self.refresh_results_window)
raw_met = Radiobutton(
radio_frame, text="Raw metrics", variable=self.box,
value="Raw metrics", command=self.refresh_results_window)
dup = Radiobutton(
radio_frame, text="Duplication", variable=self.box,
value="Duplication", command=self.refresh_results_window)
ext = Radiobutton(
radio_frame, text="External dependencies",
variable=self.box, value="External dependencies",
command=self.refresh_results_window)
stat = Radiobutton(
radio_frame, text="Statistics by type",
variable=self.box, value="Statistics by type",
command=self.refresh_results_window)
msg_cat = Radiobutton(
radio_frame, text="Messages by category",
variable=self.box, value="Messages by category",
command=self.refresh_results_window)
msg = Radiobutton(
radio_frame, text="Messages", variable=self.box,
value="Messages", command=self.refresh_results_window)
source_file = Radiobutton(
radio_frame, text="Source File", variable=self.box,
value="Source File", command=self.refresh_results_window)
report.select()
report.grid(column=0, row=0, sticky=W)
raw_met.grid(column=1, row=0, sticky=W)
dup.grid(column=2, row=0, sticky=W)
msg.grid(column=3, row=0, sticky=W)
stat.grid(column=0, row=1, sticky=W)
msg_cat.grid(column=1, row=1, sticky=W)
ext.grid(column=2, row=1, sticky=W)
source_file.grid(column=3, row=1, sticky=W)
#dictionary for check boxes and associated error term
self.msg_type_dict = {
'I': lambda: self.information_box.get() == 1,
'C': lambda: self.convention_box.get() == 1,
'R': lambda: self.refactor_box.get() == 1,
'E': lambda: self.error_box.get() == 1,
'W': lambda: self.warning_box.get() == 1,
'F': lambda: self.fatal_box.get() == 1
}
self.txt_module.focus_set()
class RecursiveDescentApp(object):
"""
A graphical tool for exploring the recursive descent parser. The tool
displays the parser's tree and the remaining text, and allows the
user to control the parser's operation. In particular, the user
can expand subtrees on the frontier, match tokens on the frontier
against the text, and backtrack. A "step" button simply steps
through the parsing process, performing the operations that
``RecursiveDescentParser`` would use.
"""
def __init__(self, grammar, sent, trace=0):
self._sent = sent
self._parser = SteppingRecursiveDescentParser(grammar, trace)
# Set up the main window.
self._top = Tk()
self._top.title('Recursive Descent Parser Application')
# Set up key bindings.
self._init_bindings()
# Initialize the fonts.
self._init_fonts(self._top)
# Animations. animating_lock is a lock to prevent the demo
# from performing new operations while it's animating.
self._animation_frames = IntVar(self._top)
self._animation_frames.set(5)
self._animating_lock = 0
self._autostep = 0
# The user can hide the grammar.
self._show_grammar = IntVar(self._top)
self._show_grammar.set(1)
# Create the basic frames.
self._init_menubar(self._top)
self._init_buttons(self._top)
self._init_feedback(self._top)
self._init_grammar(self._top)
self._init_canvas(self._top)
# Initialize the parser.
self._parser.initialize(self._sent)
# Resize callback
self._canvas.bind('<Configure>', self._configure)
#########################################
## Initialization Helpers
#########################################
def _init_fonts(self, root):
# See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
self._sysfont = Font(font=Button()["font"])
root.option_add("*Font", self._sysfont)
# TWhat's our font size (default=same as sysfont)
self._size = IntVar(root)
self._size.set(self._sysfont.cget('size'))
self._boldfont = Font(family='helvetica', weight='bold', size=self._size.get())
self._font = Font(family='helvetica', size=self._size.get())
if self._size.get() < 0:
big = self._size.get() - 2
else:
big = self._size.get() + 2
self._bigfont = Font(family='helvetica', weight='bold', size=big)
def _init_grammar(self, parent):
# Grammar view.
self._prodframe = listframe = Frame(parent)
self._prodframe.pack(fill='both', side='left', padx=2)
self._prodlist_label = Label(
self._prodframe, font=self._boldfont, text='Available Expansions'
)
self._prodlist_label.pack()
self._prodlist = Listbox(
self._prodframe,
selectmode='single',
relief='groove',
background='white',
foreground='#909090',
font=self._font,
selectforeground='#004040',
selectbackground='#c0f0c0',
)
self._prodlist.pack(side='right', fill='both', expand=1)
self._productions = list(self._parser.grammar().productions())
for production in self._productions:
self._prodlist.insert('end', (' %s' % production))
self._prodlist.config(height=min(len(self._productions), 25))
# Add a scrollbar if there are more than 25 productions.
if len(self._productions) > 25:
listscroll = Scrollbar(self._prodframe, orient='vertical')
self._prodlist.config(yscrollcommand=listscroll.set)
listscroll.config(command=self._prodlist.yview)
listscroll.pack(side='left', fill='y')
# If they select a production, apply it.
self._prodlist.bind('<<ListboxSelect>>', self._prodlist_select)
def _init_bindings(self):
# Key bindings are a good thing.
self._top.bind('<Control-q>', self.destroy)
self._top.bind('<Control-x>', self.destroy)
self._top.bind('<Escape>', self.destroy)
self._top.bind('e', self.expand)
# self._top.bind('<Alt-e>', self.expand)
# self._top.bind('<Control-e>', self.expand)
self._top.bind('m', self.match)
self._top.bind('<Alt-m>', self.match)
self._top.bind('<Control-m>', self.match)
self._top.bind('b', self.backtrack)
self._top.bind('<Alt-b>', self.backtrack)
self._top.bind('<Control-b>', self.backtrack)
self._top.bind('<Control-z>', self.backtrack)
self._top.bind('<BackSpace>', self.backtrack)
self._top.bind('a', self.autostep)
# self._top.bind('<Control-a>', self.autostep)
self._top.bind('<Control-space>', self.autostep)
self._top.bind('<Control-c>', self.cancel_autostep)
self._top.bind('<space>', self.step)
self._top.bind('<Delete>', self.reset)
self._top.bind('<Control-p>', self.postscript)
# self._top.bind('<h>', self.help)
# self._top.bind('<Alt-h>', self.help)
self._top.bind('<Control-h>', self.help)
self._top.bind('<F1>', self.help)
# self._top.bind('<g>', self.toggle_grammar)
# self._top.bind('<Alt-g>', self.toggle_grammar)
# self._top.bind('<Control-g>', self.toggle_grammar)
self._top.bind('<Control-g>', self.edit_grammar)
self._top.bind('<Control-t>', self.edit_sentence)
def _init_buttons(self, parent):
# Set up the frames.
self._buttonframe = buttonframe = Frame(parent)
buttonframe.pack(fill='none', side='bottom', padx=3, pady=2)
Button(
buttonframe,
text='Step',
background='#90c0d0',
foreground='black',
command=self.step,
).pack(side='left')
Button(
buttonframe,
text='Autostep',
background='#90c0d0',
foreground='black',
command=self.autostep,
).pack(side='left')
Button(
buttonframe,
text='Expand',
underline=0,
background='#90f090',
foreground='black',
command=self.expand,
).pack(side='left')
Button(
buttonframe,
text='Match',
underline=0,
background='#90f090',
foreground='black',
command=self.match,
).pack(side='left')
Button(
buttonframe,
text='Backtrack',
underline=0,
background='#f0a0a0',
foreground='black',
command=self.backtrack,
).pack(side='left')
# Replace autostep...
# self._autostep_button = Button(buttonframe, text='Autostep',
# underline=0, command=self.autostep)
# self._autostep_button.pack(side='left')
def _configure(self, event):
self._autostep = 0
(x1, y1, x2, y2) = self._cframe.scrollregion()
y2 = event.height - 6
self._canvas['scrollregion'] = '%d %d %d %d' % (x1, y1, x2, y2)
self._redraw()
def _init_feedback(self, parent):
self._feedbackframe = feedbackframe = Frame(parent)
feedbackframe.pack(fill='x', side='bottom', padx=3, pady=3)
self._lastoper_label = Label(
feedbackframe, text='Last Operation:', font=self._font
)
self._lastoper_label.pack(side='left')
lastoperframe = Frame(feedbackframe, relief='sunken', border=1)
lastoperframe.pack(fill='x', side='right', expand=1, padx=5)
self._lastoper1 = Label(
lastoperframe, foreground='#007070', background='#f0f0f0', font=self._font
)
self._lastoper2 = Label(
lastoperframe,
anchor='w',
width=30,
foreground='#004040',
background='#f0f0f0',
font=self._font,
)
self._lastoper1.pack(side='left')
self._lastoper2.pack(side='left', fill='x', expand=1)
def _init_canvas(self, parent):
self._cframe = CanvasFrame(
parent,
background='white',
# width=525, height=250,
closeenough=10,
border=2,
relief='sunken',
)
self._cframe.pack(expand=1, fill='both', side='top', pady=2)
canvas = self._canvas = self._cframe.canvas()
# Initially, there's no tree or text
self._tree = None
self._textwidgets = []
self._textline = None
def _init_menubar(self, parent):
menubar = Menu(parent)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(
label='Reset Parser', underline=0, command=self.reset, accelerator='Del'
)
filemenu.add_command(
label='Print to Postscript',
underline=0,
command=self.postscript,
accelerator='Ctrl-p',
)
filemenu.add_command(
label='Exit', underline=1, command=self.destroy, accelerator='Ctrl-x'
)
menubar.add_cascade(label='File', underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
editmenu.add_command(
label='Edit Grammar',
underline=5,
command=self.edit_grammar,
accelerator='Ctrl-g',
)
editmenu.add_command(
label='Edit Text',
underline=5,
command=self.edit_sentence,
accelerator='Ctrl-t',
)
menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
rulemenu = Menu(menubar, tearoff=0)
rulemenu.add_command(
label='Step', underline=1, command=self.step, accelerator='Space'
)
rulemenu.add_separator()
rulemenu.add_command(
label='Match', underline=0, command=self.match, accelerator='Ctrl-m'
)
rulemenu.add_command(
label='Expand', underline=0, command=self.expand, accelerator='Ctrl-e'
)
rulemenu.add_separator()
rulemenu.add_command(
label='Backtrack', underline=0, command=self.backtrack, accelerator='Ctrl-b'
)
menubar.add_cascade(label='Apply', underline=0, menu=rulemenu)
viewmenu = Menu(menubar, tearoff=0)
viewmenu.add_checkbutton(
label="Show Grammar",
underline=0,
variable=self._show_grammar,
command=self._toggle_grammar,
)
viewmenu.add_separator()
viewmenu.add_radiobutton(
label='Tiny',
variable=self._size,
underline=0,
value=10,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Small',
variable=self._size,
underline=0,
value=12,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Medium',
variable=self._size,
underline=0,
value=14,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Large',
variable=self._size,
underline=0,
value=18,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Huge',
variable=self._size,
underline=0,
value=24,
command=self.resize,
)
menubar.add_cascade(label='View', underline=0, menu=viewmenu)
animatemenu = Menu(menubar, tearoff=0)
animatemenu.add_radiobutton(
label="No Animation", underline=0, variable=self._animation_frames, value=0
)
animatemenu.add_radiobutton(
label="Slow Animation",
underline=0,
variable=self._animation_frames,
value=10,
accelerator='-',
)
animatemenu.add_radiobutton(
label="Normal Animation",
underline=0,
variable=self._animation_frames,
value=5,
accelerator='=',
)
animatemenu.add_radiobutton(
label="Fast Animation",
underline=0,
variable=self._animation_frames,
value=2,
accelerator='+',
)
menubar.add_cascade(label="Animate", underline=1, menu=animatemenu)
helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_command(label='About', underline=0, command=self.about)
helpmenu.add_command(
label='Instructions', underline=0, command=self.help, accelerator='F1'
)
menubar.add_cascade(label='Help', underline=0, menu=helpmenu)
parent.config(menu=menubar)
#########################################
## Helper
#########################################
def _get(self, widget, treeloc):
for i in treeloc:
widget = widget.subtrees()[i]
if isinstance(widget, TreeSegmentWidget):
widget = widget.label()
return widget
#########################################
## Main draw procedure
#########################################
def _redraw(self):
canvas = self._canvas
# Delete the old tree, widgets, etc.
if self._tree is not None:
self._cframe.destroy_widget(self._tree)
for twidget in self._textwidgets:
self._cframe.destroy_widget(twidget)
if self._textline is not None:
self._canvas.delete(self._textline)
# Draw the tree.
helv = ('helvetica', -self._size.get())
bold = ('helvetica', -self._size.get(), 'bold')
attribs = {
'tree_color': '#000000',
'tree_width': 2,
'node_font': bold,
'leaf_font': helv,
}
tree = self._parser.tree()
self._tree = tree_to_treesegment(canvas, tree, **attribs)
self._cframe.add_widget(self._tree, 30, 5)
# Draw the text.
helv = ('helvetica', -self._size.get())
bottom = y = self._cframe.scrollregion()[3]
self._textwidgets = [
TextWidget(canvas, word, font=self._font) for word in self._sent
]
for twidget in self._textwidgets:
self._cframe.add_widget(twidget, 0, 0)
twidget.move(0, bottom - twidget.bbox()[3] - 5)
y = min(y, twidget.bbox()[1])
# Draw a line over the text, to separate it from the tree.
self._textline = canvas.create_line(-5000, y - 5, 5000, y - 5, dash='.')
# Highlight appropriate nodes.
self._highlight_nodes()
self._highlight_prodlist()
# Make sure the text lines up.
self._position_text()
def _redraw_quick(self):
# This should be more-or-less sufficient after an animation.
self._highlight_nodes()
self._highlight_prodlist()
self._position_text()
def _highlight_nodes(self):
# Highlight the list of nodes to be checked.
bold = ('helvetica', -self._size.get(), 'bold')
for treeloc in self._parser.frontier()[:1]:
self._get(self._tree, treeloc)['color'] = '#20a050'
self._get(self._tree, treeloc)['font'] = bold
for treeloc in self._parser.frontier()[1:]:
self._get(self._tree, treeloc)['color'] = '#008080'
def _highlight_prodlist(self):
# Highlight the productions that can be expanded.
# Boy, too bad tkinter doesn't implement Listbox.itemconfig;
# that would be pretty useful here.
self._prodlist.delete(0, 'end')
expandable = self._parser.expandable_productions()
untried = self._parser.untried_expandable_productions()
productions = self._productions
for index in range(len(productions)):
if productions[index] in expandable:
if productions[index] in untried:
self._prodlist.insert(index, ' %s' % productions[index])
else:
self._prodlist.insert(index, ' %s (TRIED)' % productions[index])
self._prodlist.selection_set(index)
else:
self._prodlist.insert(index, ' %s' % productions[index])
def _position_text(self):
# Line up the text widgets that are matched against the tree
numwords = len(self._sent)
num_matched = numwords - len(self._parser.remaining_text())
leaves = self._tree_leaves()[:num_matched]
xmax = self._tree.bbox()[0]
for i in range(0, len(leaves)):
widget = self._textwidgets[i]
leaf = leaves[i]
widget['color'] = '#006040'
leaf['color'] = '#006040'
widget.move(leaf.bbox()[0] - widget.bbox()[0], 0)
xmax = widget.bbox()[2] + 10
# Line up the text widgets that are not matched against the tree.
for i in range(len(leaves), numwords):
widget = self._textwidgets[i]
widget['color'] = '#a0a0a0'
widget.move(xmax - widget.bbox()[0], 0)
xmax = widget.bbox()[2] + 10
# If we have a complete parse, make everything green :)
if self._parser.currently_complete():
for twidget in self._textwidgets:
twidget['color'] = '#00a000'
# Move the matched leaves down to the text.
for i in range(0, len(leaves)):
widget = self._textwidgets[i]
leaf = leaves[i]
dy = widget.bbox()[1] - leaf.bbox()[3] - 10.0
dy = max(dy, leaf.parent().label().bbox()[3] - leaf.bbox()[3] + 10)
leaf.move(0, dy)
def _tree_leaves(self, tree=None):
if tree is None:
tree = self._tree
if isinstance(tree, TreeSegmentWidget):
leaves = []
for child in tree.subtrees():
leaves += self._tree_leaves(child)
return leaves
else:
return [tree]
#########################################
## Button Callbacks
#########################################
def destroy(self, *e):
self._autostep = 0
if self._top is None:
return
self._top.destroy()
self._top = None
def reset(self, *e):
self._autostep = 0
self._parser.initialize(self._sent)
self._lastoper1['text'] = 'Reset Application'
self._lastoper2['text'] = ''
self._redraw()
def autostep(self, *e):
if self._animation_frames.get() == 0:
self._animation_frames.set(2)
if self._autostep:
self._autostep = 0
else:
self._autostep = 1
self._step()
def cancel_autostep(self, *e):
# self._autostep_button['text'] = 'Autostep'
self._autostep = 0
# Make sure to stop auto-stepping if we get any user input.
def step(self, *e):
self._autostep = 0
self._step()
def match(self, *e):
self._autostep = 0
self._match()
def expand(self, *e):
self._autostep = 0
self._expand()
def backtrack(self, *e):
self._autostep = 0
self._backtrack()
def _step(self):
if self._animating_lock:
return
# Try expanding, matching, and backtracking (in that order)
if self._expand():
pass
elif self._parser.untried_match() and self._match():
pass
elif self._backtrack():
pass
else:
self._lastoper1['text'] = 'Finished'
self._lastoper2['text'] = ''
self._autostep = 0
# Check if we just completed a parse.
if self._parser.currently_complete():
self._autostep = 0
self._lastoper2['text'] += ' [COMPLETE PARSE]'
def _expand(self, *e):
if self._animating_lock:
return
old_frontier = self._parser.frontier()
rv = self._parser.expand()
if rv is not None:
self._lastoper1['text'] = 'Expand:'
self._lastoper2['text'] = rv
self._prodlist.selection_clear(0, 'end')
index = self._productions.index(rv)
self._prodlist.selection_set(index)
self._animate_expand(old_frontier[0])
return True
else:
self._lastoper1['text'] = 'Expand:'
self._lastoper2['text'] = '(all expansions tried)'
return False
def _match(self, *e):
if self._animating_lock:
return
old_frontier = self._parser.frontier()
rv = self._parser.match()
if rv is not None:
self._lastoper1['text'] = 'Match:'
self._lastoper2['text'] = rv
self._animate_match(old_frontier[0])
return True
else:
self._lastoper1['text'] = 'Match:'
self._lastoper2['text'] = '(failed)'
return False
def _backtrack(self, *e):
if self._animating_lock:
return
if self._parser.backtrack():
elt = self._parser.tree()
for i in self._parser.frontier()[0]:
elt = elt[i]
self._lastoper1['text'] = 'Backtrack'
self._lastoper2['text'] = ''
if isinstance(elt, Tree):
self._animate_backtrack(self._parser.frontier()[0])
else:
self._animate_match_backtrack(self._parser.frontier()[0])
return True
else:
self._autostep = 0
self._lastoper1['text'] = 'Finished'
self._lastoper2['text'] = ''
return False
def about(self, *e):
ABOUT = (
"NLTK Recursive Descent Parser Application\n" + "Written by Edward Loper"
)
TITLE = 'About: Recursive Descent Parser Application'
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE).show()
except:
ShowText(self._top, TITLE, ABOUT)
def help(self, *e):
self._autostep = 0
# The default font's not very legible; try using 'fixed' instead.
try:
ShowText(
self._top,
'Help: Recursive Descent Parser Application',
(__doc__ or '').strip(),
width=75,
font='fixed',
)
except:
ShowText(
self._top,
'Help: Recursive Descent Parser Application',
(__doc__ or '').strip(),
width=75,
)
def postscript(self, *e):
self._autostep = 0
self._cframe.print_to_file()
def mainloop(self, *args, **kwargs):
"""
Enter the Tkinter mainloop. This function must be called if
this demo is created from a non-interactive program (e.g.
from a secript); otherwise, the demo will close as soon as
the script completes.
"""
if in_idle():
return
self._top.mainloop(*args, **kwargs)
def resize(self, size=None):
if size is not None:
self._size.set(size)
size = self._size.get()
self._font.configure(size=-(abs(size)))
self._boldfont.configure(size=-(abs(size)))
self._sysfont.configure(size=-(abs(size)))
self._bigfont.configure(size=-(abs(size + 2)))
self._redraw()
#########################################
## Expand Production Selection
#########################################
def _toggle_grammar(self, *e):
if self._show_grammar.get():
self._prodframe.pack(
fill='both', side='left', padx=2, after=self._feedbackframe
)
self._lastoper1['text'] = 'Show Grammar'
else:
self._prodframe.pack_forget()
self._lastoper1['text'] = 'Hide Grammar'
self._lastoper2['text'] = ''
# def toggle_grammar(self, *e):
# self._show_grammar = not self._show_grammar
# if self._show_grammar:
# self._prodframe.pack(fill='both', expand='y', side='left',
# after=self._feedbackframe)
# self._lastoper1['text'] = 'Show Grammar'
# else:
# self._prodframe.pack_forget()
# self._lastoper1['text'] = 'Hide Grammar'
# self._lastoper2['text'] = ''
def _prodlist_select(self, event):
selection = self._prodlist.curselection()
if len(selection) != 1:
return
index = int(selection[0])
old_frontier = self._parser.frontier()
production = self._parser.expand(self._productions[index])
if production:
self._lastoper1['text'] = 'Expand:'
self._lastoper2['text'] = production
self._prodlist.selection_clear(0, 'end')
self._prodlist.selection_set(index)
self._animate_expand(old_frontier[0])
else:
# Reset the production selections.
self._prodlist.selection_clear(0, 'end')
for prod in self._parser.expandable_productions():
index = self._productions.index(prod)
self._prodlist.selection_set(index)
#########################################
## Animation
#########################################
def _animate_expand(self, treeloc):
oldwidget = self._get(self._tree, treeloc)
oldtree = oldwidget.parent()
top = not isinstance(oldtree.parent(), TreeSegmentWidget)
tree = self._parser.tree()
for i in treeloc:
tree = tree[i]
widget = tree_to_treesegment(
self._canvas,
tree,
node_font=self._boldfont,
leaf_color='white',
tree_width=2,
tree_color='white',
node_color='white',
leaf_font=self._font,
)
widget.label()['color'] = '#20a050'
(oldx, oldy) = oldtree.label().bbox()[:2]
(newx, newy) = widget.label().bbox()[:2]
widget.move(oldx - newx, oldy - newy)
if top:
self._cframe.add_widget(widget, 0, 5)
widget.move(30 - widget.label().bbox()[0], 0)
self._tree = widget
else:
oldtree.parent().replace_child(oldtree, widget)
# Move the children over so they don't overlap.
# Line the children up in a strange way.
if widget.subtrees():
dx = (
oldx
+ widget.label().width() / 2
- widget.subtrees()[0].bbox()[0] / 2
- widget.subtrees()[0].bbox()[2] / 2
)
for subtree in widget.subtrees():
subtree.move(dx, 0)
self._makeroom(widget)
if top:
self._cframe.destroy_widget(oldtree)
else:
oldtree.destroy()
colors = [
'gray%d' % (10 * int(10 * x / self._animation_frames.get()))
for x in range(self._animation_frames.get(), 0, -1)
]
# Move the text string down, if necessary.
dy = widget.bbox()[3] + 30 - self._canvas.coords(self._textline)[1]
if dy > 0:
for twidget in self._textwidgets:
twidget.move(0, dy)
self._canvas.move(self._textline, 0, dy)
self._animate_expand_frame(widget, colors)
def _makeroom(self, treeseg):
"""
Make sure that no sibling tree bbox's overlap.
"""
parent = treeseg.parent()
if not isinstance(parent, TreeSegmentWidget):
return
index = parent.subtrees().index(treeseg)
# Handle siblings to the right
rsiblings = parent.subtrees()[index + 1 :]
if rsiblings:
dx = treeseg.bbox()[2] - rsiblings[0].bbox()[0] + 10
for sibling in rsiblings:
sibling.move(dx, 0)
# Handle siblings to the left
if index > 0:
lsibling = parent.subtrees()[index - 1]
dx = max(0, lsibling.bbox()[2] - treeseg.bbox()[0] + 10)
treeseg.move(dx, 0)
# Keep working up the tree.
self._makeroom(parent)
def _animate_expand_frame(self, widget, colors):
if len(colors) > 0:
self._animating_lock = 1
widget['color'] = colors[0]
for subtree in widget.subtrees():
if isinstance(subtree, TreeSegmentWidget):
subtree.label()['color'] = colors[0]
else:
subtree['color'] = colors[0]
self._top.after(50, self._animate_expand_frame, widget, colors[1:])
else:
widget['color'] = 'black'
for subtree in widget.subtrees():
if isinstance(subtree, TreeSegmentWidget):
subtree.label()['color'] = 'black'
else:
subtree['color'] = 'black'
self._redraw_quick()
widget.label()['color'] = 'black'
self._animating_lock = 0
if self._autostep:
self._step()
def _animate_backtrack(self, treeloc):
# Flash red first, if we're animating.
if self._animation_frames.get() == 0:
colors = []
else:
colors = ['#a00000', '#000000', '#a00000']
colors += [
'gray%d' % (10 * int(10 * x / (self._animation_frames.get())))
for x in range(1, self._animation_frames.get() + 1)
]
widgets = [self._get(self._tree, treeloc).parent()]
for subtree in widgets[0].subtrees():
if isinstance(subtree, TreeSegmentWidget):
widgets.append(subtree.label())
else:
widgets.append(subtree)
self._animate_backtrack_frame(widgets, colors)
def _animate_backtrack_frame(self, widgets, colors):
if len(colors) > 0:
self._animating_lock = 1
for widget in widgets:
widget['color'] = colors[0]
self._top.after(50, self._animate_backtrack_frame, widgets, colors[1:])
else:
for widget in widgets[0].subtrees():
widgets[0].remove_child(widget)
widget.destroy()
self._redraw_quick()
self._animating_lock = 0
if self._autostep:
self._step()
def _animate_match_backtrack(self, treeloc):
widget = self._get(self._tree, treeloc)
node = widget.parent().label()
dy = (node.bbox()[3] - widget.bbox()[1] + 14) / max(
1, self._animation_frames.get()
)
self._animate_match_backtrack_frame(self._animation_frames.get(), widget, dy)
def _animate_match(self, treeloc):
widget = self._get(self._tree, treeloc)
dy = (self._textwidgets[0].bbox()[1] - widget.bbox()[3] - 10.0) / max(
1, self._animation_frames.get()
)
self._animate_match_frame(self._animation_frames.get(), widget, dy)
def _animate_match_frame(self, frame, widget, dy):
if frame > 0:
self._animating_lock = 1
widget.move(0, dy)
self._top.after(10, self._animate_match_frame, frame - 1, widget, dy)
else:
widget['color'] = '#006040'
self._redraw_quick()
self._animating_lock = 0
if self._autostep:
self._step()
def _animate_match_backtrack_frame(self, frame, widget, dy):
if frame > 0:
self._animating_lock = 1
widget.move(0, dy)
self._top.after(
10, self._animate_match_backtrack_frame, frame - 1, widget, dy
)
else:
widget.parent().remove_child(widget)
widget.destroy()
self._animating_lock = 0
if self._autostep:
self._step()
def edit_grammar(self, *e):
CFGEditor(self._top, self._parser.grammar(), self.set_grammar)
def set_grammar(self, grammar):
self._parser.set_grammar(grammar)
self._productions = list(grammar.productions())
self._prodlist.delete(0, 'end')
for production in self._productions:
self._prodlist.insert('end', (' %s' % production))
def edit_sentence(self, *e):
sentence = " ".join(self._sent)
title = 'Edit Text'
instr = 'Enter a new sentence to parse.'
EntryDialog(self._top, sentence, instr, self.set_sentence, title)
def set_sentence(self, sentence):
self._sent = sentence.split() # [XX] use tagged?
self.reset()
class ConcordanceSearchView(object):
_BACKGROUND_COLOUR = "#FFF" # white
# Colour of highlighted results
_HIGHLIGHT_WORD_COLOUR = "#F00" # red
_HIGHLIGHT_WORD_TAG = "HL_WRD_TAG"
_HIGHLIGHT_LABEL_COLOUR = "#C0C0C0" # dark grey
_HIGHLIGHT_LABEL_TAG = "HL_LBL_TAG"
# Percentage of text left of the scrollbar position
_FRACTION_LEFT_TEXT = 0.30
def __init__(self):
self.queue = q.Queue()
self.model = ConcordanceSearchModel(self.queue)
self.top = Tk()
self._init_top(self.top)
self._init_menubar()
self._init_widgets(self.top)
self.load_corpus(self.model.DEFAULT_CORPUS)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def _init_top(self, top):
top.geometry("950x680+50+50")
top.title("NLTK Concordance Search")
top.bind("<Control-q>", self.destroy)
top.protocol("WM_DELETE_WINDOW", self.destroy)
top.minsize(950, 680)
def _init_widgets(self, parent):
self.main_frame = Frame(
parent,
dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
self._init_corpus_select(self.main_frame)
self._init_query_box(self.main_frame)
self._init_results_box(self.main_frame)
self._init_paging(self.main_frame)
self._init_status(self.main_frame)
self.main_frame.pack(fill="both", expand=True)
def _init_menubar(self):
self._result_size = IntVar(self.top)
self._cntx_bf_len = IntVar(self.top)
self._cntx_af_len = IntVar(self.top)
menubar = Menu(self.top)
filemenu = Menu(menubar, tearoff=0, borderwidth=0)
filemenu.add_command(label="Exit",
underline=1,
command=self.destroy,
accelerator="Ctrl-q")
menubar.add_cascade(label="File", underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
rescntmenu = Menu(editmenu, tearoff=0)
rescntmenu.add_radiobutton(
label="20",
variable=self._result_size,
underline=0,
value=20,
command=self.set_result_size,
)
rescntmenu.add_radiobutton(
label="50",
variable=self._result_size,
underline=0,
value=50,
command=self.set_result_size,
)
rescntmenu.add_radiobutton(
label="100",
variable=self._result_size,
underline=0,
value=100,
command=self.set_result_size,
)
rescntmenu.invoke(1)
editmenu.add_cascade(label="Result Count",
underline=0,
menu=rescntmenu)
cntxmenu = Menu(editmenu, tearoff=0)
cntxbfmenu = Menu(cntxmenu, tearoff=0)
cntxbfmenu.add_radiobutton(
label="60 characters",
variable=self._cntx_bf_len,
underline=0,
value=60,
command=self.set_cntx_bf_len,
)
cntxbfmenu.add_radiobutton(
label="80 characters",
variable=self._cntx_bf_len,
underline=0,
value=80,
command=self.set_cntx_bf_len,
)
cntxbfmenu.add_radiobutton(
label="100 characters",
variable=self._cntx_bf_len,
underline=0,
value=100,
command=self.set_cntx_bf_len,
)
cntxbfmenu.invoke(1)
cntxmenu.add_cascade(label="Before", underline=0, menu=cntxbfmenu)
cntxafmenu = Menu(cntxmenu, tearoff=0)
cntxafmenu.add_radiobutton(
label="70 characters",
variable=self._cntx_af_len,
underline=0,
value=70,
command=self.set_cntx_af_len,
)
cntxafmenu.add_radiobutton(
label="90 characters",
variable=self._cntx_af_len,
underline=0,
value=90,
command=self.set_cntx_af_len,
)
cntxafmenu.add_radiobutton(
label="110 characters",
variable=self._cntx_af_len,
underline=0,
value=110,
command=self.set_cntx_af_len,
)
cntxafmenu.invoke(1)
cntxmenu.add_cascade(label="After", underline=0, menu=cntxafmenu)
editmenu.add_cascade(label="Context", underline=0, menu=cntxmenu)
menubar.add_cascade(label="Edit", underline=0, menu=editmenu)
self.top.config(menu=menubar)
def set_result_size(self, **kwargs):
self.model.result_count = self._result_size.get()
def set_cntx_af_len(self, **kwargs):
self._char_after = self._cntx_af_len.get()
def set_cntx_bf_len(self, **kwargs):
self._char_before = self._cntx_bf_len.get()
def _init_corpus_select(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.var = StringVar(innerframe)
self.var.set(self.model.DEFAULT_CORPUS)
Label(
innerframe,
justify=LEFT,
text=" Corpus: ",
background=self._BACKGROUND_COLOUR,
padx=2,
pady=1,
border=0,
).pack(side="left")
other_corpora = list(self.model.CORPORA.keys()).remove(
self.model.DEFAULT_CORPUS)
om = OptionMenu(innerframe,
self.var,
self.model.DEFAULT_CORPUS,
command=self.corpus_selected,
*self.model.non_default_corpora())
om["borderwidth"] = 0
om["highlightthickness"] = 1
om.pack(side="left")
innerframe.pack(side="top", fill="x", anchor="n")
def _init_status(self, parent):
self.status = Label(
parent,
justify=LEFT,
relief=SUNKEN,
background=self._BACKGROUND_COLOUR,
border=0,
padx=1,
pady=0,
)
self.status.pack(side="top", anchor="sw")
def _init_query_box(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
another = Frame(innerframe, background=self._BACKGROUND_COLOUR)
self.query_box = Entry(another, width=60)
self.query_box.pack(side="left", fill="x", pady=25, anchor="center")
self.search_button = Button(
another,
text="Search",
command=self.search,
borderwidth=1,
highlightthickness=1,
)
self.search_button.pack(side="left",
fill="x",
pady=25,
anchor="center")
self.query_box.bind("<KeyPress-Return>",
self.search_enter_keypress_handler)
another.pack()
innerframe.pack(side="top", fill="x", anchor="n")
def search_enter_keypress_handler(self, *event):
self.search()
def _init_results_box(self, parent):
innerframe = Frame(parent)
i1 = Frame(innerframe)
i2 = Frame(innerframe)
vscrollbar = Scrollbar(i1, borderwidth=1)
hscrollbar = Scrollbar(i2, borderwidth=1, orient="horiz")
self.results_box = Text(
i1,
font=Font(family="courier", size="16"),
state="disabled",
borderwidth=1,
yscrollcommand=vscrollbar.set,
xscrollcommand=hscrollbar.set,
wrap="none",
width="40",
height="20",
exportselection=1,
)
self.results_box.pack(side="left", fill="both", expand=True)
self.results_box.tag_config(self._HIGHLIGHT_WORD_TAG,
foreground=self._HIGHLIGHT_WORD_COLOUR)
self.results_box.tag_config(self._HIGHLIGHT_LABEL_TAG,
foreground=self._HIGHLIGHT_LABEL_COLOUR)
vscrollbar.pack(side="left", fill="y", anchor="e")
vscrollbar.config(command=self.results_box.yview)
hscrollbar.pack(side="left", fill="x", expand=True, anchor="w")
hscrollbar.config(command=self.results_box.xview)
# there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
Label(i2, text=" ",
background=self._BACKGROUND_COLOUR).pack(side="left", anchor="e")
i1.pack(side="top", fill="both", expand=True, anchor="n")
i2.pack(side="bottom", fill="x", anchor="s")
innerframe.pack(side="top", fill="both", expand=True)
def _init_paging(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.prev = prev = Button(
innerframe,
text="Previous",
command=self.previous,
width="10",
borderwidth=1,
highlightthickness=1,
state="disabled",
)
prev.pack(side="left", anchor="center")
self.next = next = Button(
innerframe,
text="Next",
command=self.__next__,
width="10",
borderwidth=1,
highlightthickness=1,
state="disabled",
)
next.pack(side="right", anchor="center")
innerframe.pack(side="top", fill="y")
self.current_page = 0
def previous(self):
self.clear_results_box()
self.freeze_editable()
self.model.prev(self.current_page - 1)
def __next__(self):
self.clear_results_box()
self.freeze_editable()
self.model.next(self.current_page + 1)
def about(self, *e):
ABOUT = "NLTK Concordance Search Demo\n"
TITLE = "About: NLTK Concordance Search Demo"
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE, parent=self.main_frame).show()
except:
ShowText(self.top, TITLE, ABOUT)
def _bind_event_handlers(self):
self.top.bind(CORPUS_LOADED_EVENT, self.handle_corpus_loaded)
self.top.bind(SEARCH_TERMINATED_EVENT, self.handle_search_terminated)
self.top.bind(SEARCH_ERROR_EVENT, self.handle_search_error)
self.top.bind(ERROR_LOADING_CORPUS_EVENT,
self.handle_error_loading_corpus)
def _poll(self):
try:
event = self.queue.get(block=False)
except q.Empty:
pass
else:
if event == CORPUS_LOADED_EVENT:
self.handle_corpus_loaded(event)
elif event == SEARCH_TERMINATED_EVENT:
self.handle_search_terminated(event)
elif event == SEARCH_ERROR_EVENT:
self.handle_search_error(event)
elif event == ERROR_LOADING_CORPUS_EVENT:
self.handle_error_loading_corpus(event)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def handle_error_loading_corpus(self, event):
self.status["text"] = "Error in loading " + self.var.get()
self.unfreeze_editable()
self.clear_all()
self.freeze_editable()
def handle_corpus_loaded(self, event):
self.status["text"] = self.var.get() + " is loaded"
self.unfreeze_editable()
self.clear_all()
self.query_box.focus_set()
def handle_search_terminated(self, event):
# todo: refactor the model such that it is less state sensitive
results = self.model.get_results()
self.write_results(results)
self.status["text"] = ""
if len(results) == 0:
self.status["text"] = "No results found for " + self.model.query
else:
self.current_page = self.model.last_requested_page
self.unfreeze_editable()
self.results_box.xview_moveto(self._FRACTION_LEFT_TEXT)
def handle_search_error(self, event):
self.status["text"] = "Error in query " + self.model.query
self.unfreeze_editable()
def corpus_selected(self, *args):
new_selection = self.var.get()
self.load_corpus(new_selection)
def load_corpus(self, selection):
if self.model.selected_corpus != selection:
self.status["text"] = "Loading " + selection + "..."
self.freeze_editable()
self.model.load_corpus(selection)
def search(self):
self.current_page = 0
self.clear_results_box()
self.model.reset_results()
query = self.query_box.get()
if len(query.strip()) == 0:
return
self.status["text"] = "Searching for " + query
self.freeze_editable()
self.model.search(query, self.current_page + 1)
def write_results(self, results):
self.results_box["state"] = "normal"
row = 1
for each in results:
sent, pos1, pos2 = each[0].strip(), each[1], each[2]
if len(sent) != 0:
if pos1 < self._char_before:
sent, pos1, pos2 = self.pad(sent, pos1, pos2)
sentence = sent[pos1 - self._char_before:pos1 +
self._char_after]
if not row == len(results):
sentence += "\n"
self.results_box.insert(str(row) + ".0", sentence)
word_markers, label_markers = self.words_and_labels(
sent, pos1, pos2)
for marker in word_markers:
self.results_box.tag_add(
self._HIGHLIGHT_WORD_TAG,
str(row) + "." + str(marker[0]),
str(row) + "." + str(marker[1]),
)
for marker in label_markers:
self.results_box.tag_add(
self._HIGHLIGHT_LABEL_TAG,
str(row) + "." + str(marker[0]),
str(row) + "." + str(marker[1]),
)
row += 1
self.results_box["state"] = "disabled"
def words_and_labels(self, sentence, pos1, pos2):
search_exp = sentence[pos1:pos2]
words, labels = [], []
labeled_words = search_exp.split(" ")
index = 0
for each in labeled_words:
if each == "":
index += 1
else:
word, label = each.split("/")
words.append((self._char_before + index,
self._char_before + index + len(word)))
index += len(word) + 1
labels.append((self._char_before + index,
self._char_before + index + len(label)))
index += len(label)
index += 1
return words, labels
def pad(self, sent, hstart, hend):
if hstart >= self._char_before:
return sent, hstart, hend
d = self._char_before - hstart
sent = "".join([" "] * d) + sent
return sent, hstart + d, hend + d
def destroy(self, *e):
if self.top is None:
return
self.top.after_cancel(self.after)
self.top.destroy()
self.top = None
def clear_all(self):
self.query_box.delete(0, END)
self.model.reset_query()
self.clear_results_box()
def clear_results_box(self):
self.results_box["state"] = "normal"
self.results_box.delete("1.0", END)
self.results_box["state"] = "disabled"
def freeze_editable(self):
self.query_box["state"] = "disabled"
self.search_button["state"] = "disabled"
self.prev["state"] = "disabled"
self.next["state"] = "disabled"
def unfreeze_editable(self):
self.query_box["state"] = "normal"
self.search_button["state"] = "normal"
self.set_paging_button_states()
def set_paging_button_states(self):
if self.current_page == 0 or self.current_page == 1:
self.prev["state"] = "disabled"
else:
self.prev["state"] = "normal"
if self.model.has_more_pages(self.current_page):
self.next["state"] = "normal"
else:
self.next["state"] = "disabled"
def fire_event(self, event):
# Firing an event so that rendering of widgets happen in the mainloop thread
self.top.event_generate(event, when="tail")
def mainloop(self, *args, **kwargs):
if in_idle():
return
self.top.mainloop(*args, **kwargs)
class ShiftReduceApp(object):
"""
A graphical tool for exploring the shift-reduce parser. The tool
displays the parser's stack and the remaining text, and allows the
user to control the parser's operation. In particular, the user
can shift tokens onto the stack, and can perform reductions on the
top elements of the stack. A "step" button simply steps through
the parsing process, performing the operations that
``nltk.parse.ShiftReduceParser`` would use.
"""
def __init__(self, grammar, sent, trace=0):
self._sent = sent
self._parser = SteppingShiftReduceParser(grammar, trace)
# Set up the main window.
self._top = Tk()
self._top.title('Shift Reduce Parser Application')
# Animations. animating_lock is a lock to prevent the demo
# from performing new operations while it's animating.
self._animating_lock = 0
self._animate = IntVar(self._top)
self._animate.set(10) # = medium
# The user can hide the grammar.
self._show_grammar = IntVar(self._top)
self._show_grammar.set(1)
# Initialize fonts.
self._init_fonts(self._top)
# Set up key bindings.
self._init_bindings()
# Create the basic frames.
self._init_menubar(self._top)
self._init_buttons(self._top)
self._init_feedback(self._top)
self._init_grammar(self._top)
self._init_canvas(self._top)
# A popup menu for reducing.
self._reduce_menu = Menu(self._canvas, tearoff=0)
# Reset the demo, and set the feedback frame to empty.
self.reset()
self._lastoper1['text'] = ''
#########################################
## Initialization Helpers
#########################################
def _init_fonts(self, root):
# See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
self._sysfont = Font(font=Button()["font"])
root.option_add("*Font", self._sysfont)
# TWhat's our font size (default=same as sysfont)
self._size = IntVar(root)
self._size.set(self._sysfont.cget('size'))
self._boldfont = Font(family='helvetica', weight='bold', size=self._size.get())
self._font = Font(family='helvetica', size=self._size.get())
def _init_grammar(self, parent):
# Grammar view.
self._prodframe = listframe = Frame(parent)
self._prodframe.pack(fill='both', side='left', padx=2)
self._prodlist_label = Label(
self._prodframe, font=self._boldfont, text='Available Reductions'
)
self._prodlist_label.pack()
self._prodlist = Listbox(
self._prodframe,
selectmode='single',
relief='groove',
background='white',
foreground='#909090',
font=self._font,
selectforeground='#004040',
selectbackground='#c0f0c0',
)
self._prodlist.pack(side='right', fill='both', expand=1)
self._productions = list(self._parser.grammar().productions())
for production in self._productions:
self._prodlist.insert('end', (' %s' % production))
self._prodlist.config(height=min(len(self._productions), 25))
# Add a scrollbar if there are more than 25 productions.
if 1: # len(self._productions) > 25:
listscroll = Scrollbar(self._prodframe, orient='vertical')
self._prodlist.config(yscrollcommand=listscroll.set)
listscroll.config(command=self._prodlist.yview)
listscroll.pack(side='left', fill='y')
# If they select a production, apply it.
self._prodlist.bind('<<ListboxSelect>>', self._prodlist_select)
# When they hover over a production, highlight it.
self._hover = -1
self._prodlist.bind('<Motion>', self._highlight_hover)
self._prodlist.bind('<Leave>', self._clear_hover)
def _init_bindings(self):
# Quit
self._top.bind('<Control-q>', self.destroy)
self._top.bind('<Control-x>', self.destroy)
self._top.bind('<Alt-q>', self.destroy)
self._top.bind('<Alt-x>', self.destroy)
# Ops (step, shift, reduce, undo)
self._top.bind('<space>', self.step)
self._top.bind('<s>', self.shift)
self._top.bind('<Alt-s>', self.shift)
self._top.bind('<Control-s>', self.shift)
self._top.bind('<r>', self.reduce)
self._top.bind('<Alt-r>', self.reduce)
self._top.bind('<Control-r>', self.reduce)
self._top.bind('<Delete>', self.reset)
self._top.bind('<u>', self.undo)
self._top.bind('<Alt-u>', self.undo)
self._top.bind('<Control-u>', self.undo)
self._top.bind('<Control-z>', self.undo)
self._top.bind('<BackSpace>', self.undo)
# Misc
self._top.bind('<Control-p>', self.postscript)
self._top.bind('<Control-h>', self.help)
self._top.bind('<F1>', self.help)
self._top.bind('<Control-g>', self.edit_grammar)
self._top.bind('<Control-t>', self.edit_sentence)
# Animation speed control
self._top.bind('-', lambda e, a=self._animate: a.set(20))
self._top.bind('=', lambda e, a=self._animate: a.set(10))
self._top.bind('+', lambda e, a=self._animate: a.set(4))
def _init_buttons(self, parent):
# Set up the frames.
self._buttonframe = buttonframe = Frame(parent)
buttonframe.pack(fill='none', side='bottom')
Button(
buttonframe,
text='Step',
background='#90c0d0',
foreground='black',
command=self.step,
).pack(side='left')
Button(
buttonframe,
text='Shift',
underline=0,
background='#90f090',
foreground='black',
command=self.shift,
).pack(side='left')
Button(
buttonframe,
text='Reduce',
underline=0,
background='#90f090',
foreground='black',
command=self.reduce,
).pack(side='left')
Button(
buttonframe,
text='Undo',
underline=0,
background='#f0a0a0',
foreground='black',
command=self.undo,
).pack(side='left')
def _init_menubar(self, parent):
menubar = Menu(parent)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(
label='Reset Parser', underline=0, command=self.reset, accelerator='Del'
)
filemenu.add_command(
label='Print to Postscript',
underline=0,
command=self.postscript,
accelerator='Ctrl-p',
)
filemenu.add_command(
label='Exit', underline=1, command=self.destroy, accelerator='Ctrl-x'
)
menubar.add_cascade(label='File', underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
editmenu.add_command(
label='Edit Grammar',
underline=5,
command=self.edit_grammar,
accelerator='Ctrl-g',
)
editmenu.add_command(
label='Edit Text',
underline=5,
command=self.edit_sentence,
accelerator='Ctrl-t',
)
menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
rulemenu = Menu(menubar, tearoff=0)
rulemenu.add_command(
label='Step', underline=1, command=self.step, accelerator='Space'
)
rulemenu.add_separator()
rulemenu.add_command(
label='Shift', underline=0, command=self.shift, accelerator='Ctrl-s'
)
rulemenu.add_command(
label='Reduce', underline=0, command=self.reduce, accelerator='Ctrl-r'
)
rulemenu.add_separator()
rulemenu.add_command(
label='Undo', underline=0, command=self.undo, accelerator='Ctrl-u'
)
menubar.add_cascade(label='Apply', underline=0, menu=rulemenu)
viewmenu = Menu(menubar, tearoff=0)
viewmenu.add_checkbutton(
label="Show Grammar",
underline=0,
variable=self._show_grammar,
command=self._toggle_grammar,
)
viewmenu.add_separator()
viewmenu.add_radiobutton(
label='Tiny',
variable=self._size,
underline=0,
value=10,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Small',
variable=self._size,
underline=0,
value=12,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Medium',
variable=self._size,
underline=0,
value=14,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Large',
variable=self._size,
underline=0,
value=18,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Huge',
variable=self._size,
underline=0,
value=24,
command=self.resize,
)
menubar.add_cascade(label='View', underline=0, menu=viewmenu)
animatemenu = Menu(menubar, tearoff=0)
animatemenu.add_radiobutton(
label="No Animation", underline=0, variable=self._animate, value=0
)
animatemenu.add_radiobutton(
label="Slow Animation",
underline=0,
variable=self._animate,
value=20,
accelerator='-',
)
animatemenu.add_radiobutton(
label="Normal Animation",
underline=0,
variable=self._animate,
value=10,
accelerator='=',
)
animatemenu.add_radiobutton(
label="Fast Animation",
underline=0,
variable=self._animate,
value=4,
accelerator='+',
)
menubar.add_cascade(label="Animate", underline=1, menu=animatemenu)
helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_command(label='About', underline=0, command=self.about)
helpmenu.add_command(
label='Instructions', underline=0, command=self.help, accelerator='F1'
)
menubar.add_cascade(label='Help', underline=0, menu=helpmenu)
parent.config(menu=menubar)
def _init_feedback(self, parent):
self._feedbackframe = feedbackframe = Frame(parent)
feedbackframe.pack(fill='x', side='bottom', padx=3, pady=3)
self._lastoper_label = Label(
feedbackframe, text='Last Operation:', font=self._font
)
self._lastoper_label.pack(side='left')
lastoperframe = Frame(feedbackframe, relief='sunken', border=1)
lastoperframe.pack(fill='x', side='right', expand=1, padx=5)
self._lastoper1 = Label(
lastoperframe, foreground='#007070', background='#f0f0f0', font=self._font
)
self._lastoper2 = Label(
lastoperframe,
anchor='w',
width=30,
foreground='#004040',
background='#f0f0f0',
font=self._font,
)
self._lastoper1.pack(side='left')
self._lastoper2.pack(side='left', fill='x', expand=1)
def _init_canvas(self, parent):
self._cframe = CanvasFrame(
parent,
background='white',
width=525,
closeenough=10,
border=2,
relief='sunken',
)
self._cframe.pack(expand=1, fill='both', side='top', pady=2)
canvas = self._canvas = self._cframe.canvas()
self._stackwidgets = []
self._rtextwidgets = []
self._titlebar = canvas.create_rectangle(
0, 0, 0, 0, fill='#c0f0f0', outline='black'
)
self._exprline = canvas.create_line(0, 0, 0, 0, dash='.')
self._stacktop = canvas.create_line(0, 0, 0, 0, fill='#408080')
size = self._size.get() + 4
self._stacklabel = TextWidget(
canvas, 'Stack', color='#004040', font=self._boldfont
)
self._rtextlabel = TextWidget(
canvas, 'Remaining Text', color='#004040', font=self._boldfont
)
self._cframe.add_widget(self._stacklabel)
self._cframe.add_widget(self._rtextlabel)
#########################################
## Main draw procedure
#########################################
def _redraw(self):
scrollregion = self._canvas['scrollregion'].split()
(cx1, cy1, cx2, cy2) = [int(c) for c in scrollregion]
# Delete the old stack & rtext widgets.
for stackwidget in self._stackwidgets:
self._cframe.destroy_widget(stackwidget)
self._stackwidgets = []
for rtextwidget in self._rtextwidgets:
self._cframe.destroy_widget(rtextwidget)
self._rtextwidgets = []
# Position the titlebar & exprline
(x1, y1, x2, y2) = self._stacklabel.bbox()
y = y2 - y1 + 10
self._canvas.coords(self._titlebar, -5000, 0, 5000, y - 4)
self._canvas.coords(self._exprline, 0, y * 2 - 10, 5000, y * 2 - 10)
# Position the titlebar labels..
(x1, y1, x2, y2) = self._stacklabel.bbox()
self._stacklabel.move(5 - x1, 3 - y1)
(x1, y1, x2, y2) = self._rtextlabel.bbox()
self._rtextlabel.move(cx2 - x2 - 5, 3 - y1)
# Draw the stack.
stackx = 5
for tok in self._parser.stack():
if isinstance(tok, Tree):
attribs = {
'tree_color': '#4080a0',
'tree_width': 2,
'node_font': self._boldfont,
'node_color': '#006060',
'leaf_color': '#006060',
'leaf_font': self._font,
}
widget = tree_to_treesegment(self._canvas, tok, **attribs)
widget.label()['color'] = '#000000'
else:
widget = TextWidget(self._canvas, tok, color='#000000', font=self._font)
widget.bind_click(self._popup_reduce)
self._stackwidgets.append(widget)
self._cframe.add_widget(widget, stackx, y)
stackx = widget.bbox()[2] + 10
# Draw the remaining text.
rtextwidth = 0
for tok in self._parser.remaining_text():
widget = TextWidget(self._canvas, tok, color='#000000', font=self._font)
self._rtextwidgets.append(widget)
self._cframe.add_widget(widget, rtextwidth, y)
rtextwidth = widget.bbox()[2] + 4
# Allow enough room to shift the next token (for animations)
if len(self._rtextwidgets) > 0:
stackx += self._rtextwidgets[0].width()
# Move the remaining text to the correct location (keep it
# right-justified, when possible); and move the remaining text
# label, if necessary.
stackx = max(stackx, self._stacklabel.width() + 25)
rlabelwidth = self._rtextlabel.width() + 10
if stackx >= cx2 - max(rtextwidth, rlabelwidth):
cx2 = stackx + max(rtextwidth, rlabelwidth)
for rtextwidget in self._rtextwidgets:
rtextwidget.move(4 + cx2 - rtextwidth, 0)
self._rtextlabel.move(cx2 - self._rtextlabel.bbox()[2] - 5, 0)
midx = (stackx + cx2 - max(rtextwidth, rlabelwidth)) / 2
self._canvas.coords(self._stacktop, midx, 0, midx, 5000)
(x1, y1, x2, y2) = self._stacklabel.bbox()
# Set up binding to allow them to shift a token by dragging it.
if len(self._rtextwidgets) > 0:
def drag_shift(widget, midx=midx, self=self):
if widget.bbox()[0] < midx:
self.shift()
else:
self._redraw()
self._rtextwidgets[0].bind_drag(drag_shift)
self._rtextwidgets[0].bind_click(self.shift)
# Draw the stack top.
self._highlight_productions()
def _draw_stack_top(self, widget):
# hack..
midx = widget.bbox()[2] + 50
self._canvas.coords(self._stacktop, midx, 0, midx, 5000)
def _highlight_productions(self):
# Highlight the productions that can be reduced.
self._prodlist.selection_clear(0, 'end')
for prod in self._parser.reducible_productions():
index = self._productions.index(prod)
self._prodlist.selection_set(index)
#########################################
## Button Callbacks
#########################################
def destroy(self, *e):
if self._top is None:
return
self._top.destroy()
self._top = None
def reset(self, *e):
self._parser.initialize(self._sent)
self._lastoper1['text'] = 'Reset App'
self._lastoper2['text'] = ''
self._redraw()
def step(self, *e):
if self.reduce():
return True
elif self.shift():
return True
else:
if list(self._parser.parses()):
self._lastoper1['text'] = 'Finished:'
self._lastoper2['text'] = 'Success'
else:
self._lastoper1['text'] = 'Finished:'
self._lastoper2['text'] = 'Failure'
def shift(self, *e):
if self._animating_lock:
return
if self._parser.shift():
tok = self._parser.stack()[-1]
self._lastoper1['text'] = 'Shift:'
self._lastoper2['text'] = '%r' % tok
if self._animate.get():
self._animate_shift()
else:
self._redraw()
return True
return False
def reduce(self, *e):
if self._animating_lock:
return
production = self._parser.reduce()
if production:
self._lastoper1['text'] = 'Reduce:'
self._lastoper2['text'] = '%s' % production
if self._animate.get():
self._animate_reduce()
else:
self._redraw()
return production
def undo(self, *e):
if self._animating_lock:
return
if self._parser.undo():
self._redraw()
def postscript(self, *e):
self._cframe.print_to_file()
def mainloop(self, *args, **kwargs):
"""
Enter the Tkinter mainloop. This function must be called if
this demo is created from a non-interactive program (e.g.
from a secript); otherwise, the demo will close as soon as
the script completes.
"""
if in_idle():
return
self._top.mainloop(*args, **kwargs)
#########################################
## Menubar callbacks
#########################################
def resize(self, size=None):
if size is not None:
self._size.set(size)
size = self._size.get()
self._font.configure(size=-(abs(size)))
self._boldfont.configure(size=-(abs(size)))
self._sysfont.configure(size=-(abs(size)))
# self._stacklabel['font'] = ('helvetica', -size-4, 'bold')
# self._rtextlabel['font'] = ('helvetica', -size-4, 'bold')
# self._lastoper_label['font'] = ('helvetica', -size)
# self._lastoper1['font'] = ('helvetica', -size)
# self._lastoper2['font'] = ('helvetica', -size)
# self._prodlist['font'] = ('helvetica', -size)
# self._prodlist_label['font'] = ('helvetica', -size-2, 'bold')
self._redraw()
def help(self, *e):
# The default font's not very legible; try using 'fixed' instead.
try:
ShowText(
self._top,
'Help: Shift-Reduce Parser Application',
(__doc__ or '').strip(),
width=75,
font='fixed',
)
except:
ShowText(
self._top,
'Help: Shift-Reduce Parser Application',
(__doc__ or '').strip(),
width=75,
)
def about(self, *e):
ABOUT = "NLTK Shift-Reduce Parser Application\n" + "Written by Edward Loper"
TITLE = 'About: Shift-Reduce Parser Application'
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE).show()
except:
ShowText(self._top, TITLE, ABOUT)
def edit_grammar(self, *e):
CFGEditor(self._top, self._parser.grammar(), self.set_grammar)
def set_grammar(self, grammar):
self._parser.set_grammar(grammar)
self._productions = list(grammar.productions())
self._prodlist.delete(0, 'end')
for production in self._productions:
self._prodlist.insert('end', (' %s' % production))
def edit_sentence(self, *e):
sentence = " ".join(self._sent)
title = 'Edit Text'
instr = 'Enter a new sentence to parse.'
EntryDialog(self._top, sentence, instr, self.set_sentence, title)
def set_sentence(self, sent):
self._sent = sent.split() # [XX] use tagged?
self.reset()
#########################################
## Reduce Production Selection
#########################################
def _toggle_grammar(self, *e):
if self._show_grammar.get():
self._prodframe.pack(
fill='both', side='left', padx=2, after=self._feedbackframe
)
self._lastoper1['text'] = 'Show Grammar'
else:
self._prodframe.pack_forget()
self._lastoper1['text'] = 'Hide Grammar'
self._lastoper2['text'] = ''
def _prodlist_select(self, event):
selection = self._prodlist.curselection()
if len(selection) != 1:
return
index = int(selection[0])
production = self._parser.reduce(self._productions[index])
if production:
self._lastoper1['text'] = 'Reduce:'
self._lastoper2['text'] = '%s' % production
if self._animate.get():
self._animate_reduce()
else:
self._redraw()
else:
# Reset the production selections.
self._prodlist.selection_clear(0, 'end')
for prod in self._parser.reducible_productions():
index = self._productions.index(prod)
self._prodlist.selection_set(index)
def _popup_reduce(self, widget):
# Remove old commands.
productions = self._parser.reducible_productions()
if len(productions) == 0:
return
self._reduce_menu.delete(0, 'end')
for production in productions:
self._reduce_menu.add_command(label=str(production), command=self.reduce)
self._reduce_menu.post(
self._canvas.winfo_pointerx(), self._canvas.winfo_pointery()
)
#########################################
## Animations
#########################################
def _animate_shift(self):
# What widget are we shifting?
widget = self._rtextwidgets[0]
# Where are we shifting from & to?
right = widget.bbox()[0]
if len(self._stackwidgets) == 0:
left = 5
else:
left = self._stackwidgets[-1].bbox()[2] + 10
# Start animating.
dt = self._animate.get()
dx = (left - right) * 1.0 / dt
self._animate_shift_frame(dt, widget, dx)
def _animate_shift_frame(self, frame, widget, dx):
if frame > 0:
self._animating_lock = 1
widget.move(dx, 0)
self._top.after(10, self._animate_shift_frame, frame - 1, widget, dx)
else:
# but: stacktop??
# Shift the widget to the stack.
del self._rtextwidgets[0]
self._stackwidgets.append(widget)
self._animating_lock = 0
# Display the available productions.
self._draw_stack_top(widget)
self._highlight_productions()
def _animate_reduce(self):
# What widgets are we shifting?
numwidgets = len(self._parser.stack()[-1]) # number of children
widgets = self._stackwidgets[-numwidgets:]
# How far are we moving?
if isinstance(widgets[0], TreeSegmentWidget):
ydist = 15 + widgets[0].label().height()
else:
ydist = 15 + widgets[0].height()
# Start animating.
dt = self._animate.get()
dy = ydist * 2.0 / dt
self._animate_reduce_frame(dt / 2, widgets, dy)
def _animate_reduce_frame(self, frame, widgets, dy):
if frame > 0:
self._animating_lock = 1
for widget in widgets:
widget.move(0, dy)
self._top.after(10, self._animate_reduce_frame, frame - 1, widgets, dy)
else:
del self._stackwidgets[-len(widgets) :]
for widget in widgets:
self._cframe.remove_widget(widget)
tok = self._parser.stack()[-1]
if not isinstance(tok, Tree):
raise ValueError()
label = TextWidget(
self._canvas, str(tok.label()), color='#006060', font=self._boldfont
)
widget = TreeSegmentWidget(self._canvas, label, widgets, width=2)
(x1, y1, x2, y2) = self._stacklabel.bbox()
y = y2 - y1 + 10
if not self._stackwidgets:
x = 5
else:
x = self._stackwidgets[-1].bbox()[2] + 10
self._cframe.add_widget(widget, x, y)
self._stackwidgets.append(widget)
# Display the available productions.
self._draw_stack_top(widget)
self._highlight_productions()
# # Delete the old widgets..
# del self._stackwidgets[-len(widgets):]
# for widget in widgets:
# self._cframe.destroy_widget(widget)
#
# # Make a new one.
# tok = self._parser.stack()[-1]
# if isinstance(tok, Tree):
# attribs = {'tree_color': '#4080a0', 'tree_width': 2,
# 'node_font': bold, 'node_color': '#006060',
# 'leaf_color': '#006060', 'leaf_font':self._font}
# widget = tree_to_treesegment(self._canvas, tok.type(),
# **attribs)
# widget.node()['color'] = '#000000'
# else:
# widget = TextWidget(self._canvas, tok.type(),
# color='#000000', font=self._font)
# widget.bind_click(self._popup_reduce)
# (x1, y1, x2, y2) = self._stacklabel.bbox()
# y = y2-y1+10
# if not self._stackwidgets: x = 5
# else: x = self._stackwidgets[-1].bbox()[2] + 10
# self._cframe.add_widget(widget, x, y)
# self._stackwidgets.append(widget)
# self._redraw()
self._animating_lock = 0
#########################################
## Hovering.
#########################################
def _highlight_hover(self, event):
# What production are we hovering over?
index = self._prodlist.nearest(event.y)
if self._hover == index:
return
# Clear any previous hover highlighting.
self._clear_hover()
# If the production corresponds to an available reduction,
# highlight the stack.
selection = [int(s) for s in self._prodlist.curselection()]
if index in selection:
rhslen = len(self._productions[index].rhs())
for stackwidget in self._stackwidgets[-rhslen:]:
if isinstance(stackwidget, TreeSegmentWidget):
stackwidget.label()['color'] = '#00a000'
else:
stackwidget['color'] = '#00a000'
# Remember what production we're hovering over.
self._hover = index
def _clear_hover(self, *event):
# Clear any previous hover highlighting.
if self._hover == -1:
return
self._hover = -1
for stackwidget in self._stackwidgets:
if isinstance(stackwidget, TreeSegmentWidget):
stackwidget.label()['color'] = 'black'
else:
stackwidget['color'] = 'black'
class ShiftReduceApp(object):
"""
A graphical tool for exploring the shift-reduce parser. The tool
displays the parser's stack and the remaining text, and allows the
user to control the parser's operation. In particular, the user
can shift tokens onto the stack, and can perform reductions on the
top elements of the stack. A "step" button simply steps through
the parsing process, performing the operations that
``nltk.parse.ShiftReduceParser`` would use.
"""
def __init__(self, grammar, sent, trace=0):
self._sent = sent
self._parser = SteppingShiftReduceParser(grammar, trace)
# Set up the main window.
self._top = Tk()
self._top.title('Shift Reduce Parser Application')
# Animations. animating_lock is a lock to prevent the demo
# from performing new operations while it's animating.
self._animating_lock = 0
self._animate = IntVar(self._top)
self._animate.set(10) # = medium
# The user can hide the grammar.
self._show_grammar = IntVar(self._top)
self._show_grammar.set(1)
# Initialize fonts.
self._init_fonts(self._top)
# Set up key bindings.
self._init_bindings()
# Create the basic frames.
self._init_menubar(self._top)
self._init_buttons(self._top)
self._init_feedback(self._top)
self._init_grammar(self._top)
self._init_canvas(self._top)
# A popup menu for reducing.
self._reduce_menu = Menu(self._canvas, tearoff=0)
# Reset the demo, and set the feedback frame to empty.
self.reset()
self._lastoper1['text'] = ''
#########################################
## Initialization Helpers
#########################################
def _init_fonts(self, root):
# See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
self._sysfont = Font(font=Button()["font"])
root.option_add("*Font", self._sysfont)
# TWhat's our font size (default=same as sysfont)
self._size = IntVar(root)
self._size.set(self._sysfont.cget('size'))
self._boldfont = Font(family='helvetica', weight='bold', size=self._size.get())
self._font = Font(family='helvetica', size=self._size.get())
def _init_grammar(self, parent):
# Grammar view.
self._prodframe = listframe = Frame(parent)
self._prodframe.pack(fill='both', side='left', padx=2)
self._prodlist_label = Label(
self._prodframe, font=self._boldfont, text='Available Reductions'
)
self._prodlist_label.pack()
self._prodlist = Listbox(
self._prodframe,
selectmode='single',
relief='groove',
background='white',
foreground='#909090',
font=self._font,
selectforeground='#004040',
selectbackground='#c0f0c0',
)
self._prodlist.pack(side='right', fill='both', expand=1)
self._productions = list(self._parser.grammar().productions())
for production in self._productions:
self._prodlist.insert('end', (' %s' % production))
self._prodlist.config(height=min(len(self._productions), 25))
# Add a scrollbar if there are more than 25 productions.
if 1: # len(self._productions) > 25:
listscroll = Scrollbar(self._prodframe, orient='vertical')
self._prodlist.config(yscrollcommand=listscroll.set)
listscroll.config(command=self._prodlist.yview)
listscroll.pack(side='left', fill='y')
# If they select a production, apply it.
self._prodlist.bind('<<ListboxSelect>>', self._prodlist_select)
# When they hover over a production, highlight it.
self._hover = -1
self._prodlist.bind('<Motion>', self._highlight_hover)
self._prodlist.bind('<Leave>', self._clear_hover)
def _init_bindings(self):
# Quit
self._top.bind('<Control-q>', self.destroy)
self._top.bind('<Control-x>', self.destroy)
self._top.bind('<Alt-q>', self.destroy)
self._top.bind('<Alt-x>', self.destroy)
# Ops (step, shift, reduce, undo)
self._top.bind('<space>', self.step)
self._top.bind('<s>', self.shift)
self._top.bind('<Alt-s>', self.shift)
self._top.bind('<Control-s>', self.shift)
self._top.bind('<r>', self.reduce)
self._top.bind('<Alt-r>', self.reduce)
self._top.bind('<Control-r>', self.reduce)
self._top.bind('<Delete>', self.reset)
self._top.bind('<u>', self.undo)
self._top.bind('<Alt-u>', self.undo)
self._top.bind('<Control-u>', self.undo)
self._top.bind('<Control-z>', self.undo)
self._top.bind('<BackSpace>', self.undo)
# Misc
self._top.bind('<Control-p>', self.postscript)
self._top.bind('<Control-h>', self.help)
self._top.bind('<F1>', self.help)
self._top.bind('<Control-g>', self.edit_grammar)
self._top.bind('<Control-t>', self.edit_sentence)
# Animation speed control
self._top.bind('-', lambda e, a=self._animate: a.set(20))
self._top.bind('=', lambda e, a=self._animate: a.set(10))
self._top.bind('+', lambda e, a=self._animate: a.set(4))
def _init_buttons(self, parent):
# Set up the frames.
self._buttonframe = buttonframe = Frame(parent)
buttonframe.pack(fill='none', side='bottom')
Button(
buttonframe,
text='Step',
background='#90c0d0',
foreground='black',
command=self.step,
).pack(side='left')
Button(
buttonframe,
text='Shift',
underline=0,
background='#90f090',
foreground='black',
command=self.shift,
).pack(side='left')
Button(
buttonframe,
text='Reduce',
underline=0,
background='#90f090',
foreground='black',
command=self.reduce,
).pack(side='left')
Button(
buttonframe,
text='Undo',
underline=0,
background='#f0a0a0',
foreground='black',
command=self.undo,
).pack(side='left')
def _init_menubar(self, parent):
menubar = Menu(parent)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(
label='Reset Parser', underline=0, command=self.reset, accelerator='Del'
)
filemenu.add_command(
label='Print to Postscript',
underline=0,
command=self.postscript,
accelerator='Ctrl-p',
)
filemenu.add_command(
label='Exit', underline=1, command=self.destroy, accelerator='Ctrl-x'
)
menubar.add_cascade(label='File', underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
editmenu.add_command(
label='Edit Grammar',
underline=5,
command=self.edit_grammar,
accelerator='Ctrl-g',
)
editmenu.add_command(
label='Edit Text',
underline=5,
command=self.edit_sentence,
accelerator='Ctrl-t',
)
menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
rulemenu = Menu(menubar, tearoff=0)
rulemenu.add_command(
label='Step', underline=1, command=self.step, accelerator='Space'
)
rulemenu.add_separator()
rulemenu.add_command(
label='Shift', underline=0, command=self.shift, accelerator='Ctrl-s'
)
rulemenu.add_command(
label='Reduce', underline=0, command=self.reduce, accelerator='Ctrl-r'
)
rulemenu.add_separator()
rulemenu.add_command(
label='Undo', underline=0, command=self.undo, accelerator='Ctrl-u'
)
menubar.add_cascade(label='Apply', underline=0, menu=rulemenu)
viewmenu = Menu(menubar, tearoff=0)
viewmenu.add_checkbutton(
label="Show Grammar",
underline=0,
variable=self._show_grammar,
command=self._toggle_grammar,
)
viewmenu.add_separator()
viewmenu.add_radiobutton(
label='Tiny',
variable=self._size,
underline=0,
value=10,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Small',
variable=self._size,
underline=0,
value=12,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Medium',
variable=self._size,
underline=0,
value=14,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Large',
variable=self._size,
underline=0,
value=18,
command=self.resize,
)
viewmenu.add_radiobutton(
label='Huge',
variable=self._size,
underline=0,
value=24,
command=self.resize,
)
menubar.add_cascade(label='View', underline=0, menu=viewmenu)
animatemenu = Menu(menubar, tearoff=0)
animatemenu.add_radiobutton(
label="No Animation", underline=0, variable=self._animate, value=0
)
animatemenu.add_radiobutton(
label="Slow Animation",
underline=0,
variable=self._animate,
value=20,
accelerator='-',
)
animatemenu.add_radiobutton(
label="Normal Animation",
underline=0,
variable=self._animate,
value=10,
accelerator='=',
)
animatemenu.add_radiobutton(
label="Fast Animation",
underline=0,
variable=self._animate,
value=4,
accelerator='+',
)
menubar.add_cascade(label="Animate", underline=1, menu=animatemenu)
helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_command(label='About', underline=0, command=self.about)
helpmenu.add_command(
label='Instructions', underline=0, command=self.help, accelerator='F1'
)
menubar.add_cascade(label='Help', underline=0, menu=helpmenu)
parent.config(menu=menubar)
def _init_feedback(self, parent):
self._feedbackframe = feedbackframe = Frame(parent)
feedbackframe.pack(fill='x', side='bottom', padx=3, pady=3)
self._lastoper_label = Label(
feedbackframe, text='Last Operation:', font=self._font
)
self._lastoper_label.pack(side='left')
lastoperframe = Frame(feedbackframe, relief='sunken', border=1)
lastoperframe.pack(fill='x', side='right', expand=1, padx=5)
self._lastoper1 = Label(
lastoperframe, foreground='#007070', background='#f0f0f0', font=self._font
)
self._lastoper2 = Label(
lastoperframe,
anchor='w',
width=30,
foreground='#004040',
background='#f0f0f0',
font=self._font,
)
self._lastoper1.pack(side='left')
self._lastoper2.pack(side='left', fill='x', expand=1)
def _init_canvas(self, parent):
self._cframe = CanvasFrame(
parent,
background='white',
width=525,
closeenough=10,
border=2,
relief='sunken',
)
self._cframe.pack(expand=1, fill='both', side='top', pady=2)
canvas = self._canvas = self._cframe.canvas()
self._stackwidgets = []
self._rtextwidgets = []
self._titlebar = canvas.create_rectangle(
0, 0, 0, 0, fill='#c0f0f0', outline='black'
)
self._exprline = canvas.create_line(0, 0, 0, 0, dash='.')
self._stacktop = canvas.create_line(0, 0, 0, 0, fill='#408080')
size = self._size.get() + 4
self._stacklabel = TextWidget(
canvas, 'Stack', color='#004040', font=self._boldfont
)
self._rtextlabel = TextWidget(
canvas, 'Remaining Text', color='#004040', font=self._boldfont
)
self._cframe.add_widget(self._stacklabel)
self._cframe.add_widget(self._rtextlabel)
#########################################
## Main draw procedure
#########################################
def _redraw(self):
scrollregion = self._canvas['scrollregion'].split()
(cx1, cy1, cx2, cy2) = [int(c) for c in scrollregion]
# Delete the old stack & rtext widgets.
for stackwidget in self._stackwidgets:
self._cframe.destroy_widget(stackwidget)
self._stackwidgets = []
for rtextwidget in self._rtextwidgets:
self._cframe.destroy_widget(rtextwidget)
self._rtextwidgets = []
# Position the titlebar & exprline
(x1, y1, x2, y2) = self._stacklabel.bbox()
y = y2 - y1 + 10
self._canvas.coords(self._titlebar, -5000, 0, 5000, y - 4)
self._canvas.coords(self._exprline, 0, y * 2 - 10, 5000, y * 2 - 10)
# Position the titlebar labels..
(x1, y1, x2, y2) = self._stacklabel.bbox()
self._stacklabel.move(5 - x1, 3 - y1)
(x1, y1, x2, y2) = self._rtextlabel.bbox()
self._rtextlabel.move(cx2 - x2 - 5, 3 - y1)
# Draw the stack.
stackx = 5
for tok in self._parser.stack():
if isinstance(tok, Tree):
attribs = {
'tree_color': '#4080a0',
'tree_width': 2,
'node_font': self._boldfont,
'node_color': '#006060',
'leaf_color': '#006060',
'leaf_font': self._font,
}
widget = tree_to_treesegment(self._canvas, tok, **attribs)
widget.label()['color'] = '#000000'
else:
widget = TextWidget(self._canvas, tok, color='#000000', font=self._font)
widget.bind_click(self._popup_reduce)
self._stackwidgets.append(widget)
self._cframe.add_widget(widget, stackx, y)
stackx = widget.bbox()[2] + 10
# Draw the remaining text.
rtextwidth = 0
for tok in self._parser.remaining_text():
widget = TextWidget(self._canvas, tok, color='#000000', font=self._font)
self._rtextwidgets.append(widget)
self._cframe.add_widget(widget, rtextwidth, y)
rtextwidth = widget.bbox()[2] + 4
# Allow enough room to shift the next token (for animations)
if len(self._rtextwidgets) > 0:
stackx += self._rtextwidgets[0].width()
# Move the remaining text to the correct location (keep it
# right-justified, when possible); and move the remaining text
# label, if necessary.
stackx = max(stackx, self._stacklabel.width() + 25)
rlabelwidth = self._rtextlabel.width() + 10
if stackx >= cx2 - max(rtextwidth, rlabelwidth):
cx2 = stackx + max(rtextwidth, rlabelwidth)
for rtextwidget in self._rtextwidgets:
rtextwidget.move(4 + cx2 - rtextwidth, 0)
self._rtextlabel.move(cx2 - self._rtextlabel.bbox()[2] - 5, 0)
midx = (stackx + cx2 - max(rtextwidth, rlabelwidth)) / 2
self._canvas.coords(self._stacktop, midx, 0, midx, 5000)
(x1, y1, x2, y2) = self._stacklabel.bbox()
# Set up binding to allow them to shift a token by dragging it.
if len(self._rtextwidgets) > 0:
def drag_shift(widget, midx=midx, self=self):
if widget.bbox()[0] < midx:
self.shift()
else:
self._redraw()
self._rtextwidgets[0].bind_drag(drag_shift)
self._rtextwidgets[0].bind_click(self.shift)
# Draw the stack top.
self._highlight_productions()
def _draw_stack_top(self, widget):
# hack..
midx = widget.bbox()[2] + 50
self._canvas.coords(self._stacktop, midx, 0, midx, 5000)
def _highlight_productions(self):
# Highlight the productions that can be reduced.
self._prodlist.selection_clear(0, 'end')
for prod in self._parser.reducible_productions():
index = self._productions.index(prod)
self._prodlist.selection_set(index)
#########################################
## Button Callbacks
#########################################
def destroy(self, *e):
if self._top is None:
return
self._top.destroy()
self._top = None
def reset(self, *e):
self._parser.initialize(self._sent)
self._lastoper1['text'] = 'Reset App'
self._lastoper2['text'] = ''
self._redraw()
def step(self, *e):
if self.reduce():
return True
elif self.shift():
return True
else:
if list(self._parser.parses()):
self._lastoper1['text'] = 'Finished:'
self._lastoper2['text'] = 'Success'
else:
self._lastoper1['text'] = 'Finished:'
self._lastoper2['text'] = 'Failure'
def shift(self, *e):
if self._animating_lock:
return
if self._parser.shift():
tok = self._parser.stack()[-1]
self._lastoper1['text'] = 'Shift:'
self._lastoper2['text'] = '%r' % tok
if self._animate.get():
self._animate_shift()
else:
self._redraw()
return True
return False
def reduce(self, *e):
if self._animating_lock:
return
production = self._parser.reduce()
if production:
self._lastoper1['text'] = 'Reduce:'
self._lastoper2['text'] = '%s' % production
if self._animate.get():
self._animate_reduce()
else:
self._redraw()
return production
def undo(self, *e):
if self._animating_lock:
return
if self._parser.undo():
self._redraw()
def postscript(self, *e):
self._cframe.print_to_file()
def mainloop(self, *args, **kwargs):
"""
Enter the Tkinter mainloop. This function must be called if
this demo is created from a non-interactive program (e.g.
from a secript); otherwise, the demo will close as soon as
the script completes.
"""
if in_idle():
return
self._top.mainloop(*args, **kwargs)
#########################################
## Menubar callbacks
#########################################
def resize(self, size=None):
if size is not None:
self._size.set(size)
size = self._size.get()
self._font.configure(size=-(abs(size)))
self._boldfont.configure(size=-(abs(size)))
self._sysfont.configure(size=-(abs(size)))
# self._stacklabel['font'] = ('helvetica', -size-4, 'bold')
# self._rtextlabel['font'] = ('helvetica', -size-4, 'bold')
# self._lastoper_label['font'] = ('helvetica', -size)
# self._lastoper1['font'] = ('helvetica', -size)
# self._lastoper2['font'] = ('helvetica', -size)
# self._prodlist['font'] = ('helvetica', -size)
# self._prodlist_label['font'] = ('helvetica', -size-2, 'bold')
self._redraw()
def help(self, *e):
# The default font's not very legible; try using 'fixed' instead.
try:
ShowText(
self._top,
'Help: Shift-Reduce Parser Application',
(__doc__ or '').strip(),
width=75,
font='fixed',
)
except:
ShowText(
self._top,
'Help: Shift-Reduce Parser Application',
(__doc__ or '').strip(),
width=75,
)
def about(self, *e):
ABOUT = "NLTK Shift-Reduce Parser Application\n" + "Written by Edward Loper"
TITLE = 'About: Shift-Reduce Parser Application'
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE).show()
except:
ShowText(self._top, TITLE, ABOUT)
def edit_grammar(self, *e):
CFGEditor(self._top, self._parser.grammar(), self.set_grammar)
def set_grammar(self, grammar):
self._parser.set_grammar(grammar)
self._productions = list(grammar.productions())
self._prodlist.delete(0, 'end')
for production in self._productions:
self._prodlist.insert('end', (' %s' % production))
def edit_sentence(self, *e):
sentence = " ".join(self._sent)
title = 'Edit Text'
instr = 'Enter a new sentence to parse.'
EntryDialog(self._top, sentence, instr, self.set_sentence, title)
def set_sentence(self, sent):
self._sent = sent.split() # [XX] use tagged?
self.reset()
#########################################
## Reduce Production Selection
#########################################
def _toggle_grammar(self, *e):
if self._show_grammar.get():
self._prodframe.pack(
fill='both', side='left', padx=2, after=self._feedbackframe
)
self._lastoper1['text'] = 'Show Grammar'
else:
self._prodframe.pack_forget()
self._lastoper1['text'] = 'Hide Grammar'
self._lastoper2['text'] = ''
def _prodlist_select(self, event):
selection = self._prodlist.curselection()
if len(selection) != 1:
return
index = int(selection[0])
production = self._parser.reduce(self._productions[index])
if production:
self._lastoper1['text'] = 'Reduce:'
self._lastoper2['text'] = '%s' % production
if self._animate.get():
self._animate_reduce()
else:
self._redraw()
else:
# Reset the production selections.
self._prodlist.selection_clear(0, 'end')
for prod in self._parser.reducible_productions():
index = self._productions.index(prod)
self._prodlist.selection_set(index)
def _popup_reduce(self, widget):
# Remove old commands.
productions = self._parser.reducible_productions()
if len(productions) == 0:
return
self._reduce_menu.delete(0, 'end')
for production in productions:
self._reduce_menu.add_command(label=str(production), command=self.reduce)
self._reduce_menu.post(
self._canvas.winfo_pointerx(), self._canvas.winfo_pointery()
)
#########################################
## Animations
#########################################
def _animate_shift(self):
# What widget are we shifting?
widget = self._rtextwidgets[0]
# Where are we shifting from & to?
right = widget.bbox()[0]
if len(self._stackwidgets) == 0:
left = 5
else:
left = self._stackwidgets[-1].bbox()[2] + 10
# Start animating.
dt = self._animate.get()
dx = (left - right) * 1.0 / dt
self._animate_shift_frame(dt, widget, dx)
def _animate_shift_frame(self, frame, widget, dx):
if frame > 0:
self._animating_lock = 1
widget.move(dx, 0)
self._top.after(10, self._animate_shift_frame, frame - 1, widget, dx)
else:
# but: stacktop??
# Shift the widget to the stack.
del self._rtextwidgets[0]
self._stackwidgets.append(widget)
self._animating_lock = 0
# Display the available productions.
self._draw_stack_top(widget)
self._highlight_productions()
def _animate_reduce(self):
# What widgets are we shifting?
numwidgets = len(self._parser.stack()[-1]) # number of children
widgets = self._stackwidgets[-numwidgets:]
# How far are we moving?
if isinstance(widgets[0], TreeSegmentWidget):
ydist = 15 + widgets[0].label().height()
else:
ydist = 15 + widgets[0].height()
# Start animating.
dt = self._animate.get()
dy = ydist * 2.0 / dt
self._animate_reduce_frame(dt / 2, widgets, dy)
def _animate_reduce_frame(self, frame, widgets, dy):
if frame > 0:
self._animating_lock = 1
for widget in widgets:
widget.move(0, dy)
self._top.after(10, self._animate_reduce_frame, frame - 1, widgets, dy)
else:
del self._stackwidgets[-len(widgets) :]
for widget in widgets:
self._cframe.remove_widget(widget)
tok = self._parser.stack()[-1]
if not isinstance(tok, Tree):
raise ValueError()
label = TextWidget(
self._canvas, str(tok.label()), color='#006060', font=self._boldfont
)
widget = TreeSegmentWidget(self._canvas, label, widgets, width=2)
(x1, y1, x2, y2) = self._stacklabel.bbox()
y = y2 - y1 + 10
if not self._stackwidgets:
x = 5
else:
x = self._stackwidgets[-1].bbox()[2] + 10
self._cframe.add_widget(widget, x, y)
self._stackwidgets.append(widget)
# Display the available productions.
self._draw_stack_top(widget)
self._highlight_productions()
# # Delete the old widgets..
# del self._stackwidgets[-len(widgets):]
# for widget in widgets:
# self._cframe.destroy_widget(widget)
#
# # Make a new one.
# tok = self._parser.stack()[-1]
# if isinstance(tok, Tree):
# attribs = {'tree_color': '#4080a0', 'tree_width': 2,
# 'node_font': bold, 'node_color': '#006060',
# 'leaf_color': '#006060', 'leaf_font':self._font}
# widget = tree_to_treesegment(self._canvas, tok.type(),
# **attribs)
# widget.node()['color'] = '#000000'
# else:
# widget = TextWidget(self._canvas, tok.type(),
# color='#000000', font=self._font)
# widget.bind_click(self._popup_reduce)
# (x1, y1, x2, y2) = self._stacklabel.bbox()
# y = y2-y1+10
# if not self._stackwidgets: x = 5
# else: x = self._stackwidgets[-1].bbox()[2] + 10
# self._cframe.add_widget(widget, x, y)
# self._stackwidgets.append(widget)
# self._redraw()
self._animating_lock = 0
#########################################
## Hovering.
#########################################
def _highlight_hover(self, event):
# What production are we hovering over?
index = self._prodlist.nearest(event.y)
if self._hover == index:
return
# Clear any previous hover highlighting.
self._clear_hover()
# If the production corresponds to an available reduction,
# highlight the stack.
selection = [int(s) for s in self._prodlist.curselection()]
if index in selection:
rhslen = len(self._productions[index].rhs())
for stackwidget in self._stackwidgets[-rhslen:]:
if isinstance(stackwidget, TreeSegmentWidget):
stackwidget.label()['color'] = '#00a000'
else:
stackwidget['color'] = '#00a000'
# Remember what production we're hovering over.
self._hover = index
def _clear_hover(self, *event):
# Clear any previous hover highlighting.
if self._hover == -1:
return
self._hover = -1
for stackwidget in self._stackwidgets:
if isinstance(stackwidget, TreeSegmentWidget):
stackwidget.label()['color'] = 'black'
else:
stackwidget['color'] = 'black'
class DrtGlueDemo(object):
def __init__(self, examples):
# Set up the main window.
self._top = Tk()
self._top.title('DRT Glue Demo')
# Set up key bindings.
self._init_bindings()
# Initialize the fonts.self._error = None
self._init_fonts(self._top)
self._examples = examples
self._readingCache = [None for example in examples]
# The user can hide the grammar.
self._show_grammar = IntVar(self._top)
self._show_grammar.set(1)
# Set the data to None
self._curExample = -1
self._readings = []
self._drs = None
self._drsWidget = None
self._error = None
self._init_glue()
# Create the basic frames.
self._init_menubar(self._top)
self._init_buttons(self._top)
self._init_exampleListbox(self._top)
self._init_readingListbox(self._top)
self._init_canvas(self._top)
# Resize callback
self._canvas.bind('<Configure>', self._configure)
#########################################
## Initialization Helpers
#########################################
def _init_glue(self):
tagger = RegexpTagger(
[('^(David|Mary|John)$', 'NNP'),
('^(walks|sees|eats|chases|believes|gives|sleeps|chases|persuades|tries|seems|leaves)$', 'VB'),
('^(go|order|vanish|find|approach)$', 'VB'),
('^(a)$', 'ex_quant'),
('^(every)$', 'univ_quant'),
('^(sandwich|man|dog|pizza|unicorn|cat|senator)$', 'NN'),
('^(big|gray|former)$', 'JJ'),
('^(him|himself)$', 'PRP')
])
depparser = MaltParser(tagger=tagger)
self._glue = DrtGlue(depparser=depparser, remove_duplicates=False)
def _init_fonts(self, root):
# See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
self._sysfont = Font(font=Button()["font"])
root.option_add("*Font", self._sysfont)
# TWhat's our font size (default=same as sysfont)
self._size = IntVar(root)
self._size.set(self._sysfont.cget('size'))
self._boldfont = Font(family='helvetica', weight='bold',
size=self._size.get())
self._font = Font(family='helvetica',
size=self._size.get())
if self._size.get() < 0: big = self._size.get()-2
else: big = self._size.get()+2
self._bigfont = Font(family='helvetica', weight='bold',
size=big)
def _init_exampleListbox(self, parent):
self._exampleFrame = listframe = Frame(parent)
self._exampleFrame.pack(fill='both', side='left', padx=2)
self._exampleList_label = Label(self._exampleFrame, font=self._boldfont,
text='Examples')
self._exampleList_label.pack()
self._exampleList = Listbox(self._exampleFrame, selectmode='single',
relief='groove', background='white',
foreground='#909090', font=self._font,
selectforeground='#004040',
selectbackground='#c0f0c0')
self._exampleList.pack(side='right', fill='both', expand=1)
for example in self._examples:
self._exampleList.insert('end', (' %s' % example))
self._exampleList.config(height=min(len(self._examples), 25), width=40)
# Add a scrollbar if there are more than 25 examples.
if len(self._examples) > 25:
listscroll = Scrollbar(self._exampleFrame,
orient='vertical')
self._exampleList.config(yscrollcommand = listscroll.set)
listscroll.config(command=self._exampleList.yview)
listscroll.pack(side='left', fill='y')
# If they select a example, apply it.
self._exampleList.bind('<<ListboxSelect>>', self._exampleList_select)
def _init_readingListbox(self, parent):
self._readingFrame = listframe = Frame(parent)
self._readingFrame.pack(fill='both', side='left', padx=2)
self._readingList_label = Label(self._readingFrame, font=self._boldfont,
text='Readings')
self._readingList_label.pack()
self._readingList = Listbox(self._readingFrame, selectmode='single',
relief='groove', background='white',
foreground='#909090', font=self._font,
selectforeground='#004040',
selectbackground='#c0f0c0')
self._readingList.pack(side='right', fill='both', expand=1)
# Add a scrollbar if there are more than 25 examples.
listscroll = Scrollbar(self._readingFrame,
orient='vertical')
self._readingList.config(yscrollcommand = listscroll.set)
listscroll.config(command=self._readingList.yview)
listscroll.pack(side='right', fill='y')
self._populate_readingListbox()
def _populate_readingListbox(self):
# Populate the listbox with integers
self._readingList.delete(0, 'end')
for i in range(len(self._readings)):
self._readingList.insert('end', (' %s' % (i+1)))
self._readingList.config(height=min(len(self._readings), 25), width=5)
# If they select a example, apply it.
self._readingList.bind('<<ListboxSelect>>', self._readingList_select)
def _init_bindings(self):
# Key bindings are a good thing.
self._top.bind('<Control-q>', self.destroy)
self._top.bind('<Control-x>', self.destroy)
self._top.bind('<Escape>', self.destroy)
self._top.bind('n', self.next)
self._top.bind('<space>', self.next)
self._top.bind('p', self.prev)
self._top.bind('<BackSpace>', self.prev)
def _init_buttons(self, parent):
# Set up the frames.
self._buttonframe = buttonframe = Frame(parent)
buttonframe.pack(fill='none', side='bottom', padx=3, pady=2)
Button(buttonframe, text='Prev',
background='#90c0d0', foreground='black',
command=self.prev,).pack(side='left')
Button(buttonframe, text='Next',
background='#90c0d0', foreground='black',
command=self.next,).pack(side='left')
def _configure(self, event):
self._autostep = 0
(x1, y1, x2, y2) = self._cframe.scrollregion()
y2 = event.height - 6
self._canvas['scrollregion'] = '%d %d %d %d' % (x1,y1,x2,y2)
self._redraw()
def _init_canvas(self, parent):
self._cframe = CanvasFrame(parent, background='white',
#width=525, height=250,
closeenough=10,
border=2, relief='sunken')
self._cframe.pack(expand=1, fill='both', side='top', pady=2)
canvas = self._canvas = self._cframe.canvas()
# Initially, there's no tree or text
self._tree = None
self._textwidgets = []
self._textline = None
def _init_menubar(self, parent):
menubar = Menu(parent)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(label='Exit', underline=1,
command=self.destroy, accelerator='q')
menubar.add_cascade(label='File', underline=0, menu=filemenu)
actionmenu = Menu(menubar, tearoff=0)
actionmenu.add_command(label='Next', underline=0,
command=self.next, accelerator='n, Space')
actionmenu.add_command(label='Previous', underline=0,
command=self.prev, accelerator='p, Backspace')
menubar.add_cascade(label='Action', underline=0, menu=actionmenu)
optionmenu = Menu(menubar, tearoff=0)
optionmenu.add_checkbutton(label='Remove Duplicates', underline=0,
variable=self._glue.remove_duplicates,
command=self._toggle_remove_duplicates,
accelerator='r')
menubar.add_cascade(label='Options', underline=0, menu=optionmenu)
viewmenu = Menu(menubar, tearoff=0)
viewmenu.add_radiobutton(label='Tiny', variable=self._size,
underline=0, value=10, command=self.resize)
viewmenu.add_radiobutton(label='Small', variable=self._size,
underline=0, value=12, command=self.resize)
viewmenu.add_radiobutton(label='Medium', variable=self._size,
underline=0, value=14, command=self.resize)
viewmenu.add_radiobutton(label='Large', variable=self._size,
underline=0, value=18, command=self.resize)
viewmenu.add_radiobutton(label='Huge', variable=self._size,
underline=0, value=24, command=self.resize)
menubar.add_cascade(label='View', underline=0, menu=viewmenu)
helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_command(label='About', underline=0,
command=self.about)
menubar.add_cascade(label='Help', underline=0, menu=helpmenu)
parent.config(menu=menubar)
#########################################
## Main draw procedure
#########################################
def _redraw(self):
canvas = self._canvas
# Delete the old DRS, widgets, etc.
if self._drsWidget is not None:
self._drsWidget.clear()
if self._drs:
self._drsWidget = DrsWidget( self._canvas, self._drs )
self._drsWidget.draw()
if self._error:
self._drsWidget = DrsWidget( self._canvas, self._error )
self._drsWidget.draw()
#########################################
## Button Callbacks
#########################################
def destroy(self, *e):
self._autostep = 0
if self._top is None: return
self._top.destroy()
self._top = None
def prev(self, *e):
selection = self._readingList.curselection()
readingListSize = self._readingList.size()
# there are readings
if readingListSize > 0:
# if one reading is currently selected
if len(selection) == 1:
index = int(selection[0])
# if it's on (or before) the first item
if index <= 0:
self._select_previous_example()
else:
self._readingList_store_selection(index-1)
else:
#select its first reading
self._readingList_store_selection(readingListSize-1)
else:
self._select_previous_example()
def _select_previous_example(self):
#if the current example is not the first example
if self._curExample > 0:
self._exampleList_store_selection(self._curExample-1)
else:
#go to the last example
self._exampleList_store_selection(len(self._examples)-1)
def next(self, *e):
selection = self._readingList.curselection()
readingListSize = self._readingList.size()
# if there are readings
if readingListSize > 0:
# if one reading is currently selected
if len(selection) == 1:
index = int(selection[0])
# if it's on (or past) the last item
if index >= (readingListSize-1):
self._select_next_example()
else:
self._readingList_store_selection(index+1)
else:
#select its first reading
self._readingList_store_selection(0)
else:
self._select_next_example()
def _select_next_example(self):
#if the current example is not the last example
if self._curExample < len(self._examples)-1:
self._exampleList_store_selection(self._curExample+1)
else:
#go to the first example
self._exampleList_store_selection(0)
def about(self, *e):
ABOUT = ("NLTK Discourse Representation Theory (DRT) Glue Semantics Demo\n"+
"Written by Daniel H. Garrette")
TITLE = 'About: NLTK DRT Glue Demo'
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE).show()
except:
ShowText(self._top, TITLE, ABOUT)
def postscript(self, *e):
self._autostep = 0
self._cframe.print_to_file()
def mainloop(self, *args, **kwargs):
"""
Enter the Tkinter mainloop. This function must be called if
this demo is created from a non-interactive program (e.g.
from a secript); otherwise, the demo will close as soon as
the script completes.
"""
if in_idle(): return
self._top.mainloop(*args, **kwargs)
def resize(self, size=None):
if size is not None: self._size.set(size)
size = self._size.get()
self._font.configure(size=-(abs(size)))
self._boldfont.configure(size=-(abs(size)))
self._sysfont.configure(size=-(abs(size)))
self._bigfont.configure(size=-(abs(size+2)))
self._redraw()
def _toggle_remove_duplicates(self):
self._glue.remove_duplicates = not self._glue.remove_duplicates
self._exampleList.selection_clear(0, 'end')
self._readings = []
self._populate_readingListbox()
self._readingCache = [None for ex in self._examples]
self._curExample = -1
self._error = None
self._drs = None
self._redraw()
def _exampleList_select(self, event):
selection = self._exampleList.curselection()
if len(selection) != 1: return
self._exampleList_store_selection(int(selection[0]))
def _exampleList_store_selection(self, index):
self._curExample = index
example = self._examples[index]
self._exampleList.selection_clear(0, 'end')
if example:
cache = self._readingCache[index]
if cache:
if isinstance(cache, list):
self._readings = cache
self._error = None
else:
self._readings = []
self._error = cache
else:
try:
self._readings = self._glue.parse_to_meaning(example)
self._error = None
self._readingCache[index] = self._readings
except Exception as e:
self._readings = []
self._error = DrtVariableExpression(Variable('Error: ' + str(e)))
self._readingCache[index] = self._error
#add a star to the end of the example
self._exampleList.delete(index)
self._exampleList.insert(index, (' %s *' % example))
self._exampleList.config(height=min(len(self._examples), 25), width=40)
self._populate_readingListbox()
self._exampleList.selection_set(index)
self._drs = None
self._redraw()
def _readingList_select(self, event):
selection = self._readingList.curselection()
if len(selection) != 1: return
self._readingList_store_selection(int(selection[0]))
def _readingList_store_selection(self, index):
reading = self._readings[index]
self._readingList.selection_clear(0, 'end')
if reading:
self._readingList.selection_set(index)
self._drs = reading.simplify().normalize().resolve_anaphora()
self._redraw()
class Game(Frame):
'''Top-level Frame managing top-level events. Interact directly with user.'''
############ geometry ###############
X_PADDING = 25
Y_PADDING = 25
SHIP_PANEL_WIDTH = 150
BUTTON_PANEL_HEIGHT = 50
BUTTON_PADDING = 5
WARNING_BAR_HEIGHT = 40
#####################################
########### states ##################
PLACING = 0
PLAYING = 1
GAME_OVER = 2
#####################################
############ colors #################
BACKGROUND_COLOR = "white"
WARNING_BACKGROUND = "khaki1"
#####################################
###### window titles and messages ################
GAME_OVER_POPUP_TITLE = "Game Over"
GAME_OVER_WIN_MSG = "You win!"
GAME_OVER_LOSE_MSG = "Game over. You lose."
WINDOW_TITLE_GAME_OVER = "Battleship (Game Over)"
WINDOW_TITLE_NORMAL = "Battleship"
##################################################
def __init__(self, master):
'''Create the UI for a game of battleship.'''
Frame.__init__(self, master)
self._create_ui()
# these are 'controller' elements that should really be in another class
self.ai = ShipAI(self.their_grid._model, self.my_grid._model)
self.reset()
def show_warning(self, msg, title=None):
'''Show a warning msg that a certain action is illegal.
Allows user to understand what's going on (i.e. why their action failed.
'''
tkMessageBox.showwarning(title, msg)
def _create_ui(self):
'''Create all UI elements for the game.'''
self._create_menu()
self._add_grids()
self._add_staging_panel()
self._addship_panels()
self._make_buttons()
self.config(height=self.Y_PADDING * 3 + self.my_grid.size + self.BUTTON_PANEL_HEIGHT + self.WARNING_BAR_HEIGHT)
self.set_all_bgs(self.BACKGROUND_COLOR, self)
def _destroy_popup(self, event=None):
'''Process removal of the popup.'''
self.master.focus_set()
self._popup.grab_release()
self._popup.destroy()
def _show_rules(self):
'''Show the help dialog in a new window.'''
# load the help page
help_page_location = "help/rules.txt"
f = open(help_page_location, "r")
lines = f.read()
f.close()
tkMessageBox.showinfo("Rules", lines)
def show_keyboard_shortcuts(self):
'''Show a dialog box with the keyboard shortcuts.'''
# load the keyboard shortcuts page
ks_page_location = "help/keyboard_shortcuts.txt"
f = open(ks_page_location, "r")
lines = f.read()
f.close()
tkMessageBox.showinfo("Keyboard Shortcuts", lines)
def _create_menu(self):
'''Create the menu in the GUI.'''
menubar = Menu(self)
self.menus = {}
count = 0
self.file_menu = Menu(menubar, tearoff=0)
self.file_menu.add_command(label="New Game")#, command=self.reset)
self.menus["file_new_game"] = count
count += 1
self.file_menu.add_command(label="Save")
self.menus["file_save"] = count
count += 1
self.file_menu.add_command(label="Open")
self.menus["file_open"] = count
count += 1
self.file_menu.add_command(label="Exit")#, command=self.master.destroy)
self.menus["file_exit"] = count
count += 1
menubar.add_cascade(label="File", menu=self.file_menu)
if battleship.GameController.DEV_FLAG:
count = 0
self.dev_menu = Menu(menubar, tearoff=0)
self.dev_menu.add_command(label="Auto Place")
self.menus["dev_auto_place"] = count
count += 1
self.dev_menu.add_command(label="Random Shot")
self.menus["dev_random_shot"] = count
count += 1
self.dev_menu.add_command(label="Auto Load")
self.menus["dev_auto_load"] = count
count += 1
menubar.add_cascade(label="Dev", menu=self.dev_menu)
help_menu = Menu(menubar, tearoff=0)
help_menu.add_command(label="Rules", command=self._show_rules)
help_menu.add_command(label="Keyboard Shortcuts", command=self.show_keyboard_shortcuts)
menubar.add_cascade(label="Help", menu=help_menu)
self.master.config(menu=menubar)
def _add_staging_panel(self):
'''Create the placement/ship staging panel.'''
self.my_grid_frame.staging_panel = ShipPlacementPanel(self)
self.my_grid_frame.staging_panel.place(
x=self.X_PADDING * 2 + self.SHIP_PANEL_WIDTH + self.my_grid.size,
y=self.Y_PADDING
)
def set_all_bgs(self, color, parent):
'''Set all the backgrounds of the child widgets to a certain color.'''
parent.config(background=color)
for child in parent.winfo_children():
self.set_all_bgs(color, child)
def _addship_panels(self):
'''Add a list of ships to select from, for adding.
Note that staging area must be added FIRST'''
############################## ShipPanel ########################
self.my_grid_frame.ship_panel = ShipPanel(self)
self.my_grid_frame.ship_panel.place(x=self.X_PADDING, y=self.Y_PADDING * 4)
self.unselect_ship()
##################################################################
###################### ShipWarPanel ##############################
self.my_grid_frame._ship_war_panel = ShipWarPanel(self)
self.my_grid_frame._ship_war_panel.config(height=self.my_grid_frame.winfo_height())
self.my_grid_frame._ship_war_panel.place(x=self.X_PADDING, y=self.Y_PADDING * 2)
##################################################################
###################### EnemyShipPanel ############################
self.their_grid_frame.ship_panel = EnemyShipPanel(self)
self.their_grid_frame.ship_panel.place(x=self.my_grid.size * 2 + self.X_PADDING * 3 + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING * 4)
##################################################################
def unselect_ship(self):
'''Deselect all ships in the placement and staging GUIs.'''
self.my_grid_frame.ship_panel._ship_var.set(10)
self.my_grid_frame.staging_panel.reset()
def _hide_frame(self, frame):
'''Since you can't hide a frame per se, 'unpack' the frame's child widgets.
WARNING: this removes all packing directions for children'''
frame.lower()
for child in frame.winfo_children():
child.pack_forget()
def show_game_over_popup(self, winner):
'''Show a popup with a dialog saying the game is over, and showing the winning player.'''
msg = {
battleship.GameController. HUMAN_PLAYER : self.GAME_OVER_WIN_MSG,
battleship.GameController.AI_PLAYER : self.GAME_OVER_LOSE_MSG
} [winner]
tkMessageBox.showinfo(self.GAME_OVER_POPUP_TITLE, msg)
def process_placing_state(self):
'''Basic stuff to do during placing state.'''
self.config(width=self.X_PADDING * 3 + self.my_grid.size + self.SHIP_PANEL_WIDTH + self.my_grid_frame.staging_panel.CANVAS_WIDTH)
# show staging panel
self.my_grid_frame.staging_panel.pack_ui()
self.my_grid_frame.staging_panel.lift(aboveThis=self.their_grid_frame)
self.my_grid_frame.staging_panel.reset()
#re-pack
self.play_game_button.pack(side=LEFT, padx=self.BUTTON_PADDING, pady=self.BUTTON_PADDING)
self.play_game_button.config(state=DISABLED)
self._hide_frame(self.their_grid_frame)
self._hide_frame(self.my_grid_frame._ship_war_panel)
self.my_grid_frame.ship_panel.lift(aboveThis=self.my_grid_frame._ship_war_panel)
# allow the AI to place ships
self.ai.place_ships()
def process_playing_state(self):
'''Basic stuff to do during playing state.'''
self.config(width=self.X_PADDING * 4 + self.my_grid.size * 2 + self.SHIP_PANEL_WIDTH * 2)
self.my_grid._model.finalize()
self.their_grid._model.finalize()
self._hide_frame(self.my_grid_frame.staging_panel)
self.their_grid.config(state=NORMAL)
self.their_grid.enable()
# hide while playing
self.play_game_button.pack_forget()
self.unselect_ship()
self.my_grid_frame._ship_war_panel.pack_ui()
self.my_grid_frame._ship_war_panel.lift(aboveThis=self.my_grid_frame.ship_panel)
# show opponent's grid
self.their_grid_frame.lift(aboveThis=self.my_grid_frame.staging_panel)
self.their_grid_label.pack()
self.their_grid.pack(side=LEFT, pady=20)
def process_game_over_state(self):
'''Change the view to reflect the game is over.'''
self.their_grid.disable()
self.master.title(self.WINDOW_TITLE_GAME_OVER)
def process_state(self):
'''Simple state controller to enable and disable certain widgets depending on the state.'''
if self._state == self.PLACING:
self.process_placing_state()
elif self._state == self.PLAYING:
self.process_playing_state()
elif self._state == self.GAME_OVER:
self.process_game_over_state()
def _add_grid_events(self):
'''Add events to the grids.'''
#self.their_grid.tag_bind("tile", "<Button-1>", self._shot)
pass
def _add_grids(self):
'''Create UI containers for the player grids.'''
self.my_grid_frame = PlayerGridFrame(self)
self.my_grid_frame.place(x=self.X_PADDING + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING)
l1 = Label(self.my_grid_frame, text="Your Grid")
l1.pack()
self.my_grid = ShipGrid(self.my_grid_frame, True)
self.my_grid.pack(side=LEFT, pady=20)
self.their_grid_frame = PlayerGridFrame(self)
self.their_grid_frame.place(x=self.my_grid.size + self.X_PADDING * 2 + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING)
self.their_grid_label = Label(self.their_grid_frame, text="Opponent's Grid")
self.their_grid_label.pack()
self.their_grid = ShipGrid(self.their_grid_frame, False)
self.their_grid.pack(side=LEFT, pady=20)
self._add_grid_events()
def reset(self):
'''New game!'''
self.master.title(self.WINDOW_TITLE_NORMAL)
# reset selected ship
self.unselect_ship()
# reset staging area
self.my_grid_frame.staging_panel.reset()
# reset indicators on ships in panels
self.my_grid_frame._ship_war_panel.reset()
for ship, button in self.my_grid_frame.ship_panel.ship_buttons.items():
button.config(foreground="black")
for x, y in self.my_grid.get_tiles():
self.reset_closure(x, y)
self._state = self.PLACING
self.process_state()
def reset_closure(self, x, y):
'''Add a placement event to the given tile.
TODO this is badly named'''
tag_id = self.my_grid._get_tile_name(x, y)
c = self.get_add_ship_callback()
f = lambda event: self.add_staged_ship(x, y, c)
self.my_grid.tag_bind(tag_id, "<Button-1>", f)
def add_staged_ship(self, x, y, callback):
'''Take the stage from the staging area, and place it on the board at position (x, y).
After ship has been placed, execute the function <callback>.'''
s = self.my_grid_frame.staging_panel.get_staged_ship()
if s is not None:
self.my_grid.add_ship(x, y, s.get_short_name(), s.is_vertical(), callback)
def get_add_ship_callback(self):
'''Return the callback function for adding a ship.'''
return lambda: self.ship_set(self.my_grid_frame.ship_panel.get_current_ship())
def _set_ship_sunk(self, ship):
'''This is a callback, to be called when a ship has been sunk.
TODO for now only called when one of MY ships is sunk.
UI shows that the given ship has been sunk.'''
self.my_grid_frame.ship_panel.set_sunk(ship)
def _set_ship_hit(self, ship):
'''This is a callback, to be called when a ship has been hit.
TODO for now only called when one of MY ships is hit.
UI shows that the given ship has been hit.'''
assert ship is not None
self.my_grid_frame._ship_war_panel.update(ship)
def ship_set(self, ship):
'''This is a callback, to be called when a ship has been placed.
UI shows that the given ship has been placed.'''
self._set_ships[ship] = True
self.my_grid_frame.ship_panel.set_placed(ship)
if all(self._set_ships.values()):
self.play_game_button.config(state=NORMAL)
def _make_buttons(self):
'''Create action buttons at the bottom.'''
button_row = self.my_grid.size + self.Y_PADDING + (self.BUTTON_PANEL_HEIGHT - 2 * self.BUTTON_PADDING)
button_frame = Frame(self)
button_frame.place(x=self.my_grid.size - self.X_PADDING, y=button_row)
self.play_game_button = Button(button_frame, text="Play")
self.play_game_button.pack(side=LEFT, padx=self.BUTTON_PADDING, pady=self.BUTTON_PADDING)
def redraw(self):
'''Redraw the GUI, reloading all info from the model.
TODO this is a work-in-progress'''
# first, figure out the state
# are the ships placed? are they sunk?
grids = [self.my_grid._model, self.their_grid._model]
# set panels to the correct state
self.my_grid_frame.ship_panel.redraw(grids[0])
self.my_grid_frame._ship_war_panel.redraw(grids[0])
self.their_grid_frame.ship_panel.redraw(grids[1])
# set the grid to the correct state
self.my_grid.redraw(grids[0])
self.their_grid.redraw(grids[1])
if all([g.has_all_ships() for g in grids]) and all([g.all_sunk() for g in grids]):
#TODO
# state is game over.
pass
elif all([g.has_all_ships() for g in grids]):
self.process_playing_state()
else:
#TODO
# state is placing
pass
class ConcordanceSearchView(object):
_BACKGROUND_COLOUR = '#FFF' #white
#Colour of highlighted results
_HIGHLIGHT_WORD_COLOUR = '#F00' #red
_HIGHLIGHT_WORD_TAG = 'HL_WRD_TAG'
_HIGHLIGHT_LABEL_COLOUR = '#C0C0C0' # dark grey
_HIGHLIGHT_LABEL_TAG = 'HL_LBL_TAG'
#Percentage of text left of the scrollbar position
_FRACTION_LEFT_TEXT = 0.30
def __init__(self):
self.queue = q.Queue()
self.model = ConcordanceSearchModel(self.queue)
self.top = Tk()
self._init_top(self.top)
self._init_menubar()
self._init_widgets(self.top)
self.load_corpus(self.model.DEFAULT_CORPUS)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def _init_top(self, top):
top.geometry('950x680+50+50')
top.title('NLTK Concordance Search')
top.bind('<Control-q>', self.destroy)
top.protocol('WM_DELETE_WINDOW', self.destroy)
top.minsize(950, 680)
def _init_widgets(self, parent):
self.main_frame = Frame(
parent,
dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
self._init_corpus_select(self.main_frame)
self._init_query_box(self.main_frame)
self._init_results_box(self.main_frame)
self._init_paging(self.main_frame)
self._init_status(self.main_frame)
self.main_frame.pack(fill='both', expand=True)
def _init_menubar(self):
self._result_size = IntVar(self.top)
self._cntx_bf_len = IntVar(self.top)
self._cntx_af_len = IntVar(self.top)
menubar = Menu(self.top)
filemenu = Menu(menubar, tearoff=0, borderwidth=0)
filemenu.add_command(label='Exit',
underline=1,
command=self.destroy,
accelerator='Ctrl-q')
menubar.add_cascade(label='File', underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
rescntmenu = Menu(editmenu, tearoff=0)
rescntmenu.add_radiobutton(label='20',
variable=self._result_size,
underline=0,
value=20,
command=self.set_result_size)
rescntmenu.add_radiobutton(label='50',
variable=self._result_size,
underline=0,
value=50,
command=self.set_result_size)
rescntmenu.add_radiobutton(label='100',
variable=self._result_size,
underline=0,
value=100,
command=self.set_result_size)
rescntmenu.invoke(1)
editmenu.add_cascade(label='Result Count',
underline=0,
menu=rescntmenu)
cntxmenu = Menu(editmenu, tearoff=0)
cntxbfmenu = Menu(cntxmenu, tearoff=0)
cntxbfmenu.add_radiobutton(label='60 characters',
variable=self._cntx_bf_len,
underline=0,
value=60,
command=self.set_cntx_bf_len)
cntxbfmenu.add_radiobutton(label='80 characters',
variable=self._cntx_bf_len,
underline=0,
value=80,
command=self.set_cntx_bf_len)
cntxbfmenu.add_radiobutton(label='100 characters',
variable=self._cntx_bf_len,
underline=0,
value=100,
command=self.set_cntx_bf_len)
cntxbfmenu.invoke(1)
cntxmenu.add_cascade(label='Before', underline=0, menu=cntxbfmenu)
cntxafmenu = Menu(cntxmenu, tearoff=0)
cntxafmenu.add_radiobutton(label='70 characters',
variable=self._cntx_af_len,
underline=0,
value=70,
command=self.set_cntx_af_len)
cntxafmenu.add_radiobutton(label='90 characters',
variable=self._cntx_af_len,
underline=0,
value=90,
command=self.set_cntx_af_len)
cntxafmenu.add_radiobutton(label='110 characters',
variable=self._cntx_af_len,
underline=0,
value=110,
command=self.set_cntx_af_len)
cntxafmenu.invoke(1)
cntxmenu.add_cascade(label='After', underline=0, menu=cntxafmenu)
editmenu.add_cascade(label='Context', underline=0, menu=cntxmenu)
menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
self.top.config(menu=menubar)
def set_result_size(self, **kwargs):
self.model.result_count = self._result_size.get()
def set_cntx_af_len(self, **kwargs):
self._char_after = self._cntx_af_len.get()
def set_cntx_bf_len(self, **kwargs):
self._char_before = self._cntx_bf_len.get()
def _init_corpus_select(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.var = StringVar(innerframe)
self.var.set(self.model.DEFAULT_CORPUS)
Label(innerframe,
justify=LEFT,
text=' Corpus: ',
background=self._BACKGROUND_COLOUR,
padx=2,
pady=1,
border=0).pack(side='left')
other_corpora = list(self.model.CORPORA.keys()).remove(
self.model.DEFAULT_CORPUS)
om = OptionMenu(innerframe,
self.var,
self.model.DEFAULT_CORPUS,
command=self.corpus_selected,
*self.model.non_default_corpora())
om['borderwidth'] = 0
om['highlightthickness'] = 1
om.pack(side='left')
innerframe.pack(side='top', fill='x', anchor='n')
def _init_status(self, parent):
self.status = Label(parent,
justify=LEFT,
relief=SUNKEN,
background=self._BACKGROUND_COLOUR,
border=0,
padx=1,
pady=0)
self.status.pack(side='top', anchor='sw')
def _init_query_box(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
another = Frame(innerframe, background=self._BACKGROUND_COLOUR)
self.query_box = Entry(another, width=60)
self.query_box.pack(side='left', fill='x', pady=25, anchor='center')
self.search_button = Button(another,
text='Search',
command=self.search,
borderwidth=1,
highlightthickness=1)
self.search_button.pack(side='left',
fill='x',
pady=25,
anchor='center')
self.query_box.bind('<KeyPress-Return>',
self.search_enter_keypress_handler)
another.pack()
innerframe.pack(side='top', fill='x', anchor='n')
def search_enter_keypress_handler(self, *event):
self.search()
def _init_results_box(self, parent):
innerframe = Frame(parent)
i1 = Frame(innerframe)
i2 = Frame(innerframe)
vscrollbar = Scrollbar(i1, borderwidth=1)
hscrollbar = Scrollbar(i2, borderwidth=1, orient='horiz')
self.results_box = Text(i1,
font=Font(family='courier', size='16'),
state='disabled',
borderwidth=1,
yscrollcommand=vscrollbar.set,
xscrollcommand=hscrollbar.set,
wrap='none',
width='40',
height='20',
exportselection=1)
self.results_box.pack(side='left', fill='both', expand=True)
self.results_box.tag_config(self._HIGHLIGHT_WORD_TAG,
foreground=self._HIGHLIGHT_WORD_COLOUR)
self.results_box.tag_config(self._HIGHLIGHT_LABEL_TAG,
foreground=self._HIGHLIGHT_LABEL_COLOUR)
vscrollbar.pack(side='left', fill='y', anchor='e')
vscrollbar.config(command=self.results_box.yview)
hscrollbar.pack(side='left', fill='x', expand=True, anchor='w')
hscrollbar.config(command=self.results_box.xview)
#there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
Label(i2, text=' ',
background=self._BACKGROUND_COLOUR).pack(side='left', anchor='e')
i1.pack(side='top', fill='both', expand=True, anchor='n')
i2.pack(side='bottom', fill='x', anchor='s')
innerframe.pack(side='top', fill='both', expand=True)
def _init_paging(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.prev = prev = Button(innerframe,
text='Previous',
command=self.previous,
width='10',
borderwidth=1,
highlightthickness=1,
state='disabled')
prev.pack(side='left', anchor='center')
self.next = next = Button(innerframe,
text='Next',
command=self.__next__,
width='10',
borderwidth=1,
highlightthickness=1,
state='disabled')
next.pack(side='right', anchor='center')
innerframe.pack(side='top', fill='y')
self.current_page = 0
def previous(self):
self.clear_results_box()
self.freeze_editable()
self.model.prev(self.current_page - 1)
def __next__(self):
self.clear_results_box()
self.freeze_editable()
self.model.next(self.current_page + 1)
def about(self, *e):
ABOUT = ("NLTK Concordance Search Demo\n")
TITLE = 'About: NLTK Concordance Search Demo'
try:
from six.moves.tkinter_messagebox import Message
Message(message=ABOUT, title=TITLE, parent=self.main_frame).show()
except:
ShowText(self.top, TITLE, ABOUT)
def _bind_event_handlers(self):
self.top.bind(CORPUS_LOADED_EVENT, self.handle_corpus_loaded)
self.top.bind(SEARCH_TERMINATED_EVENT, self.handle_search_terminated)
self.top.bind(SEARCH_ERROR_EVENT, self.handle_search_error)
self.top.bind(ERROR_LOADING_CORPUS_EVENT,
self.handle_error_loading_corpus)
def _poll(self):
try:
event = self.queue.get(block=False)
except q.Empty:
pass
else:
if event == CORPUS_LOADED_EVENT:
self.handle_corpus_loaded(event)
elif event == SEARCH_TERMINATED_EVENT:
self.handle_search_terminated(event)
elif event == SEARCH_ERROR_EVENT:
self.handle_search_error(event)
elif event == ERROR_LOADING_CORPUS_EVENT:
self.handle_error_loading_corpus(event)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def handle_error_loading_corpus(self, event):
self.status['text'] = 'Error in loading ' + self.var.get()
self.unfreeze_editable()
self.clear_all()
self.freeze_editable()
def handle_corpus_loaded(self, event):
self.status['text'] = self.var.get() + ' is loaded'
self.unfreeze_editable()
self.clear_all()
self.query_box.focus_set()
def handle_search_terminated(self, event):
#todo: refactor the model such that it is less state sensitive
results = self.model.get_results()
self.write_results(results)
self.status['text'] = ''
if len(results) == 0:
self.status['text'] = 'No results found for ' + self.model.query
else:
self.current_page = self.model.last_requested_page
self.unfreeze_editable()
self.results_box.xview_moveto(self._FRACTION_LEFT_TEXT)
def handle_search_error(self, event):
self.status['text'] = 'Error in query ' + self.model.query
self.unfreeze_editable()
def corpus_selected(self, *args):
new_selection = self.var.get()
self.load_corpus(new_selection)
def load_corpus(self, selection):
if self.model.selected_corpus != selection:
self.status['text'] = 'Loading ' + selection + '...'
self.freeze_editable()
self.model.load_corpus(selection)
def search(self):
self.current_page = 0
self.clear_results_box()
self.model.reset_results()
query = self.query_box.get()
if (len(query.strip()) == 0): return
self.status['text'] = 'Searching for ' + query
self.freeze_editable()
self.model.search(
query,
self.current_page + 1,
)
def write_results(self, results):
self.results_box['state'] = 'normal'
row = 1
for each in results:
sent, pos1, pos2 = each[0].strip(), each[1], each[2]
if len(sent) != 0:
if (pos1 < self._char_before):
sent, pos1, pos2 = self.pad(sent, pos1, pos2)
sentence = sent[pos1 - self._char_before:pos1 +
self._char_after]
if not row == len(results):
sentence += '\n'
self.results_box.insert(str(row) + '.0', sentence)
word_markers, label_markers = self.words_and_labels(
sent, pos1, pos2)
for marker in word_markers:
self.results_box.tag_add(self._HIGHLIGHT_WORD_TAG,
str(row) + '.' + str(marker[0]),
str(row) + '.' + str(marker[1]))
for marker in label_markers:
self.results_box.tag_add(self._HIGHLIGHT_LABEL_TAG,
str(row) + '.' + str(marker[0]),
str(row) + '.' + str(marker[1]))
row += 1
self.results_box['state'] = 'disabled'
def words_and_labels(self, sentence, pos1, pos2):
search_exp = sentence[pos1:pos2]
words, labels = [], []
labeled_words = search_exp.split(' ')
index = 0
for each in labeled_words:
if each == '':
index += 1
else:
word, label = each.split('/')
words.append((self._char_before + index,
self._char_before + index + len(word)))
index += len(word) + 1
labels.append((self._char_before + index,
self._char_before + index + len(label)))
index += len(label)
index += 1
return words, labels
def pad(self, sent, hstart, hend):
if hstart >= self._char_before:
return sent, hstart, hend
d = self._char_before - hstart
sent = ''.join([' '] * d) + sent
return sent, hstart + d, hend + d
def destroy(self, *e):
if self.top is None: return
self.top.after_cancel(self.after)
self.top.destroy()
self.top = None
def clear_all(self):
self.query_box.delete(0, END)
self.model.reset_query()
self.clear_results_box()
def clear_results_box(self):
self.results_box['state'] = 'normal'
self.results_box.delete("1.0", END)
self.results_box['state'] = 'disabled'
def freeze_editable(self):
self.query_box['state'] = 'disabled'
self.search_button['state'] = 'disabled'
self.prev['state'] = 'disabled'
self.next['state'] = 'disabled'
def unfreeze_editable(self):
self.query_box['state'] = 'normal'
self.search_button['state'] = 'normal'
self.set_paging_button_states()
def set_paging_button_states(self):
if self.current_page == 0 or self.current_page == 1:
self.prev['state'] = 'disabled'
else:
self.prev['state'] = 'normal'
if self.model.has_more_pages(self.current_page):
self.next['state'] = 'normal'
else:
self.next['state'] = 'disabled'
def fire_event(self, event):
#Firing an event so that rendering of widgets happen in the mainloop thread
self.top.event_generate(event, when='tail')
def mainloop(self, *args, **kwargs):
if in_idle(): return
self.top.mainloop(*args, **kwargs)
class CollocationsView:
_BACKGROUND_COLOUR='#FFF' #white
def __init__(self):
self.queue = q.Queue()
self.model = CollocationsModel(self.queue)
self.top = Tk()
self._init_top(self.top)
self._init_menubar()
self._init_widgets(self.top)
self.load_corpus(self.model.DEFAULT_CORPUS)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def _init_top(self, top):
top.geometry('550x650+50+50')
top.title('NLTK Collocations List')
top.bind('<Control-q>', self.destroy)
top.protocol('WM_DELETE_WINDOW', self.destroy)
top.minsize(550,650)
def _init_widgets(self, parent):
self.main_frame = Frame(parent, dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
self._init_corpus_select(self.main_frame)
self._init_results_box(self.main_frame)
self._init_paging(self.main_frame)
self._init_status(self.main_frame)
self.main_frame.pack(fill='both', expand=True)
def _init_corpus_select(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.var = StringVar(innerframe)
self.var.set(self.model.DEFAULT_CORPUS)
Label(innerframe, justify=LEFT, text=' Corpus: ', background=self._BACKGROUND_COLOUR, padx = 2, pady = 1, border = 0).pack(side='left')
other_corpora = list(self.model.CORPORA.keys()).remove(self.model.DEFAULT_CORPUS)
om = OptionMenu(innerframe, self.var, self.model.DEFAULT_CORPUS, command=self.corpus_selected, *self.model.non_default_corpora())
om['borderwidth'] = 0
om['highlightthickness'] = 1
om.pack(side='left')
innerframe.pack(side='top', fill='x', anchor='n')
def _init_status(self, parent):
self.status = Label(parent, justify=LEFT, relief=SUNKEN, background=self._BACKGROUND_COLOUR, border=0, padx = 1, pady = 0)
self.status.pack(side='top', anchor='sw')
def _init_menubar(self):
self._result_size = IntVar(self.top)
menubar = Menu(self.top)
filemenu = Menu(menubar, tearoff=0, borderwidth=0)
filemenu.add_command(label='Exit', underline=1,
command=self.destroy, accelerator='Ctrl-q')
menubar.add_cascade(label='File', underline=0, menu=filemenu)
editmenu = Menu(menubar, tearoff=0)
rescntmenu = Menu(editmenu, tearoff=0)
rescntmenu.add_radiobutton(label='20', variable=self._result_size,
underline=0, value=20, command=self.set_result_size)
rescntmenu.add_radiobutton(label='50', variable=self._result_size,
underline=0, value=50, command=self.set_result_size)
rescntmenu.add_radiobutton(label='100', variable=self._result_size,
underline=0, value=100, command=self.set_result_size)
rescntmenu.invoke(1)
editmenu.add_cascade(label='Result Count', underline=0, menu=rescntmenu)
menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
self.top.config(menu=menubar)
def set_result_size(self, **kwargs):
self.model.result_count = self._result_size.get()
def _init_results_box(self, parent):
innerframe = Frame(parent)
i1 = Frame(innerframe)
i2 = Frame(innerframe)
vscrollbar = Scrollbar(i1, borderwidth=1)
hscrollbar = Scrollbar(i2, borderwidth=1, orient='horiz')
self.results_box = Text(i1,
font=Font(family='courier', size='16'),
state='disabled', borderwidth=1,
yscrollcommand=vscrollbar.set,
xscrollcommand=hscrollbar.set, wrap='none', width='40', height = '20', exportselection=1)
self.results_box.pack(side='left', fill='both', expand=True)
vscrollbar.pack(side='left', fill='y', anchor='e')
vscrollbar.config(command=self.results_box.yview)
hscrollbar.pack(side='left', fill='x', expand=True, anchor='w')
hscrollbar.config(command=self.results_box.xview)
#there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
Label(i2, text=' ', background=self._BACKGROUND_COLOUR).pack(side='left', anchor='e')
i1.pack(side='top', fill='both', expand=True, anchor='n')
i2.pack(side='bottom', fill='x', anchor='s')
innerframe.pack(side='top', fill='both', expand=True)
def _init_paging(self, parent):
innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
self.prev = prev = Button(innerframe, text='Previous', command=self.previous, width='10', borderwidth=1, highlightthickness=1, state='disabled')
prev.pack(side='left', anchor='center')
self.next = next = Button(innerframe, text='Next', command=self.__next__, width='10', borderwidth=1, highlightthickness=1, state='disabled')
next.pack(side='right', anchor='center')
innerframe.pack(side='top', fill='y')
self.reset_current_page()
def reset_current_page(self):
self.current_page = -1
def _poll(self):
try:
event = self.queue.get(block=False)
except q.Empty:
pass
else:
if event == CORPUS_LOADED_EVENT:
self.handle_corpus_loaded(event)
elif event == ERROR_LOADING_CORPUS_EVENT:
self.handle_error_loading_corpus(event)
self.after = self.top.after(POLL_INTERVAL, self._poll)
def handle_error_loading_corpus(self, event):
self.status['text'] = 'Error in loading ' + self.var.get()
self.unfreeze_editable()
self.clear_results_box()
self.freeze_editable()
self.reset_current_page()
def handle_corpus_loaded(self, event):
self.status['text'] = self.var.get() + ' is loaded'
self.unfreeze_editable()
self.clear_results_box()
self.reset_current_page()
#self.next()
collocations = self.model.next(self.current_page + 1)
self.write_results(collocations)
self.current_page += 1
def corpus_selected(self, *args):
new_selection = self.var.get()
self.load_corpus(new_selection)
def previous(self):
self.freeze_editable()
collocations = self.model.prev(self.current_page - 1)
self.current_page= self.current_page - 1
self.clear_results_box()
self.write_results(collocations)
self.unfreeze_editable()
def __next__(self):
self.freeze_editable()
collocations = self.model.next(self.current_page + 1)
self.clear_results_box()
self.write_results(collocations)
self.current_page += 1
self.unfreeze_editable()
def load_corpus(self, selection):
if self.model.selected_corpus != selection:
self.status['text'] = 'Loading ' + selection + '...'
self.freeze_editable()
self.model.load_corpus(selection)
def freeze_editable(self):
self.prev['state'] = 'disabled'
self.next['state'] = 'disabled'
def clear_results_box(self):
self.results_box['state'] = 'normal'
self.results_box.delete("1.0", END)
self.results_box['state'] = 'disabled'
def fire_event(self, event):
#Firing an event so that rendering of widgets happen in the mainloop thread
self.top.event_generate(event, when='tail')
def destroy(self, *e):
if self.top is None: return
self.top.after_cancel(self.after)
self.top.destroy()
self.top = None
def mainloop(self, *args, **kwargs):
if in_idle(): return
self.top.mainloop(*args, **kwargs)
def unfreeze_editable(self):
self.set_paging_button_states()
def set_paging_button_states(self):
if self.current_page == -1 or self.current_page == 0:
self.prev['state'] = 'disabled'
else:
self.prev['state'] = 'normal'
if self.model.is_last_page(self.current_page):
self.next['state'] = 'disabled'
else:
self.next['state'] = 'normal'
def write_results(self, results):
self.results_box['state'] = 'normal'
row = 1
for each in results:
self.results_box.insert(str(row) + '.0', each[0] + " " + each[1] + "\n")
row += 1
self.results_box['state'] = 'disabled'