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textEditor.py
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textEditor.py
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import sys, os # platform, args, run tools
from tkinter import * # base widgets, constants
from tkinter.filedialog import Open, SaveAs # standard dialogs
from tkinter.messagebox import showinfo, showerror, askyesno
from tkinter.simpledialog import askstring, askinteger
from tkinter.colorchooser import askcolor
from PP4E.Gui.Tools.guimaker import * # Frame + menu/toolbar builders
try:
import textConfig
configs = textConfig.__dict__
except: # define in client app directory
configs = {}
START = '1.0' # index of first char: row=1,col=0
SEL_FIRST = SEL + '.first' # map sel tag to index
SEL_LAST = SEL + '.last' # same as 'sel.last'
FontScale = 0 # use bigger font on Linux
if sys.platform[:3] != 'win': # and other non-Windows boxes
FontScale = 3
class TextEditor: # mix with menu/toolbar Frame class
startfiledir = '.'
editwindows = []
if __name__ == '__main__':
from textConfig import (
opensAskUser, opensEncoding,
savesUseKnownEncoding, savesAskUser, savesEncoding)
else:
from .textConfig import (
opensAskUser, opensEncoding,
savesUseKnownEncoding, savesAskUser, savesEncoding)
ftypes = [('All files', '*'),
('Text files', '.txt'),
('Python files', '.py')]
colors = [{'fg':'black', 'bg':'white'},
{'fg':'yellow', 'bg':'black'},
{'fg':'white', 'bg':'blue'},
{'fg':'black', 'bg':'beige'},
{'fg':'yellow', 'bg':'purple'},
{'fg':'black', 'bg':'brown'},
{'fg':'lightgreen', 'bg':'darkgreen'},
{'fg':'darkblue', 'bg':'orange'},
{'fg':'orange', 'bg':'darkblue'}]
fonts = [('courier', 9+FontScale, 'normal'),
('courier', 12+FontScale, 'normal'),
('courier', 10+FontScale, 'bold'),
('courier', 10+FontScale, 'italic'),
('times', 10+FontScale, 'normal'),
('helvetica', 10+FontScale, 'normal'),
('ariel', 10+FontScale, 'normal'),
('system', 10+FontScale, 'normal'),
('courier', 20+FontScale, 'normal')]
def __init__(self, loadFirst='', loadEncode=''):
if not isinstance(self, GuiMaker):
raise TypeError('TextEditor needs a GuiMaker mixin')
self.setFileName(None)
self.lastfind = None
self.openDialog = None
self.saveDialog = None
self.knownEncoding = None
self.text.focus()
if loadFirst:
self.update()
self.onOpen(loadFirst, loadEncode)
def start(self):
self.menuBar = [
('File', 0,
[('Open...', 0, self.onOpen),
('Save', 0, self.onSave),
('Save As...', 5, self.onSaveAs),
('New', 0, self.onNew),
'separator',
('Quit...', 0, self.onQuit)]
),
('Edit', 0,
[('Undo', 0, self.onUndo),
('Redo', 0, self.onRedo),
'separator',
('Cut', 0, self.onCut),
('Copy', 1, self.onCopy),
('Paste', 0, self.onPaste),
'separator',
('Delete', 0, self.onDelete),
('Select All', 0, self.onSelectAll)]
),
('Search', 0,
[('Goto...', 0, self.onGoto),
('Find...', 0, self.onFind),
('Refind', 0, self.onRefind),
('Change...', 0, self.onChange),
('Grep...', 3, self.onGrep)]
),
('Tools', 0,
[('Pick Font...', 6, self.onPickFont),
('Font List', 0, self.onFontList),
'separator',
('Pick Bg...', 3, self.onPickBg),
('Pick Fg...', 0, self.onPickFg),
('Color List', 0, self.onColorList),
'separator',
('Info...', 0, self.onInfo),
('Clone', 1, self.onClone),
('Run Code', 0, self.onRunCode)]
)]
self.toolBar = [
('Save', self.onSave, {'side': LEFT}),
('Cut', self.onCut, {'side': LEFT}),
('Copy', self.onCopy, {'side': LEFT}),
('Paste', self.onPaste, {'side': LEFT}),
('Find', self.onRefind, {'side': LEFT}),
('Help', self.help, {'side': RIGHT}),
('Quit', self.onQuit, {'side': RIGHT})]
def makeWidgets(self): # run by GuiMaker.__init__
name = Label(self, bg='black', fg='white') # add below menu, above tool
name.pack(side=TOP, fill=X) # menu/toolbars are packed
vbar = Scrollbar(self)
hbar = Scrollbar(self, orient='horizontal')
text = Text(self, padx=5, wrap='none') # disable line wrapping
text.config(undo=1, autoseparators=1)
vbar.pack(side=RIGHT, fill=Y)
hbar.pack(side=BOTTOM, fill=X) # pack text last
text.pack(side=TOP, fill=BOTH, expand=YES) # else sbars clipped
text.config(yscrollcommand=vbar.set)
text.config(xscrollcommand=hbar.set)
vbar.config(command=text.yview)
hbar.config(command=text.xview)
startfont = configs.get('font', self.fonts[0])
startbg = configs.get('bg', self.colors[0]['bg'])
startfg = configs.get('fg', self.colors[0]['fg'])
text.config(font=startfont, bg=startbg, fg=startfg)
if 'height' in configs: text.config(height=configs['height'])
if 'width' in configs: text.config(width =configs['width'])
self.text = text
self.filelabel = name
def my_askopenfilename(self):
if not self.openDialog:
self.openDialog = Open(initialdir=self.startfiledir,
filetypes=self.ftypes)
return self.openDialog.show()
def my_asksaveasfilename(self): # objects remember last result dir/file
if not self.saveDialog:
self.saveDialog = SaveAs(initialdir=self.startfiledir,
filetypes=self.ftypes)
return self.saveDialog.show()
def onOpen(self, loadFirst='', loadEncode=''):
if self.text_edit_modified():
if not askyesno('SimpleEditor', 'Text has changed: discard changes?'):
return
file = loadFirst or self.my_askopenfilename()
if not file:
return
if not os.path.isfile(file):
showerror('SimpleEditor', 'Could not open file ' + file)
return
text = None
if loadEncode:
try:
text = open(file, 'r', encoding=loadEncode).read()
self.knownEncoding = loadEncode
except (UnicodeError, LookupError, IOError): # lookup: bad name
pass
if text == None and self.opensAskUser:
self.update() # else dialog doesn't appear in rare cases
askuser = askstring('SimpleEditor', 'Enter Unicode encoding for open',
initialvalue=(self.opensEncoding or
sys.getdefaultencoding() or ''))
if askuser:
try:
text = open(file, 'r', encoding=askuser).read()
self.knownEncoding = askuser
except (UnicodeError, LookupError, IOError):
pass
if text == None and self.opensEncoding:
try:
text = open(file, 'r', encoding=self.opensEncoding).read()
self.knownEncoding = self.opensEncoding
except (UnicodeError, LookupError, IOError):
pass
if text == None:
try:
text = open(file, 'r', encoding=sys.getdefaultencoding()).read()
self.knownEncoding = sys.getdefaultencoding()
except (UnicodeError, LookupError, IOError):
pass
if text == None:
try:
text = open(file, 'rb').read()
text = text.replace(b'\r\n', b'\n')
self.knownEncoding = None
except IOError:
pass
if text == None:
showerror('SimpleEditor', 'Could not decode and open file ' + file)
else:
self.setAllText(text)
self.setFileName(file)
self.text.edit_reset()
self.text.edit_modified(0)
def onSave(self):
self.onSaveAs(self.currfile)
def onSaveAs(self, forcefile=None):
filename = forcefile or self.my_asksaveasfilename()
if not filename:
return
text = self.getAllText()
encpick = None
if self.knownEncoding and (
(forcefile and self.savesUseKnownEncoding >= 1) or
(not forcefile and self.savesUseKnownEncoding >= 2)):
try:
text.encode(self.knownEncoding)
encpick = self.knownEncoding
except UnicodeError:
pass
if not encpick and self.savesAskUser:
self.update() # else dialog doesn't appear in rare cases
askuser = askstring('SimpleEditor', 'Enter Unicode encoding for save',
initialvalue=(self.knownEncoding or
self.savesEncoding or
sys.getdefaultencoding() or ''))
if askuser:
try:
text.encode(askuser)
encpick = askuser
except (UnicodeError, LookupError):
pass
if not encpick and self.savesEncoding:
try:
text.encode(self.savesEncoding)
encpick = self.savesEncoding
except (UnicodeError, LookupError):
pass
if not encpick:
try:
text.encode(sys.getdefaultencoding())
encpick = sys.getdefaultencoding()
except (UnicodeError, LookupError):
pass
if not encpick:
showerror('SimpleEditor', 'Could not encode for file ' + filename)
else:
try:
file = open(filename, 'w', encoding=encpick)
file.write(text)
file.close()
except:
showerror('SimpleEditor', 'Could not write file ' + filename)
else:
self.setFileName(filename)
self.text.edit_modified(0)
self.knownEncoding = encpick
def onNew(self):
if self.text_edit_modified():
if not askyesno('SimpleEditor', 'Text has changed: discard changes?'):
return
self.setFileName(None)
self.clearAllText()
self.text.edit_reset()
self.text.edit_modified(0)
self.knownEncoding = None
def onQuit(self):
assert False, 'onQuit must be defined in window-specific sublass'
def text_edit_modified(self):
return self.text.edit_modified()
def onUndo(self):
try:
self.text.edit_undo()
except TclError:
showinfo('SimpleEditor', 'Nothing to undo')
def onRedo(self):
try:
self.text.edit_redo()
except TclError:
showinfo('SimpleEditor', 'Nothing to redo')
def onCopy(self):
if not self.text.tag_ranges(SEL):
showerror('SimpleEditor', 'No text selected')
else:
text = self.text.get(SEL_FIRST, SEL_LAST)
self.clipboard_clear()
self.clipboard_append(text)
def onDelete(self): # delete selected text, no save
if not self.text.tag_ranges(SEL):
showerror('SimpleEditor', 'No text selected')
else:
self.text.delete(SEL_FIRST, SEL_LAST)
def onCut(self):
if not self.text.tag_ranges(SEL):
showerror('SimpleEditor', 'No text selected')
else:
self.onCopy() # save and delete selected text
self.onDelete()
def onPaste(self):
try:
text = self.selection_get(selection='CLIPBOARD')
except TclError:
showerror('SimpleEditor', 'Nothing to paste')
return
self.text.insert(INSERT, text)
self.text.tag_remove(SEL, '1.0', END)
self.text.tag_add(SEL, INSERT+'-%dc' % len(text), INSERT)
self.text.see(INSERT)
def onSelectAll(self):
self.text.tag_add(SEL, '1.0', END+'-1c')
self.text.mark_set(INSERT, '1.0')
self.text.see(INSERT)
def onGoto(self, forceline=None):
line = forceline or askinteger('SimpleEditor', 'Enter line number')
self.text.update()
self.text.focus()
if line is not None:
maxindex = self.text.index(END+'-1c')
maxline = int(maxindex.split('.')[0])
if line > 0 and line <= maxline:
self.text.mark_set(INSERT, '%d.0' % line) # goto line
self.text.tag_remove(SEL, '1.0', END) # delete selects
self.text.tag_add(SEL, INSERT, 'insert + 1l') # select line
self.text.see(INSERT) # scroll to line
else:
showerror('SimpleEditor', 'Bad line number')
def onFind(self, lastkey=None):
key = lastkey or askstring('SimpleEditor', 'Enter search string')
self.text.update()
self.text.focus()
self.lastfind = key
if key:
nocase = configs.get('caseinsens', True)
where = self.text.search(key, INSERT, END, nocase=nocase)
if not where: # don't wrap
showerror('SimpleEditor', 'String not found')
else:
pastkey = where + '+%dc' % len(key) # index past key
self.text.tag_remove(SEL, '1.0', END) # remove any sel
self.text.tag_add(SEL, where, pastkey) # select key
self.text.mark_set(INSERT, pastkey) # for next find
self.text.see(where) # scroll display
def onRefind(self):
self.onFind(self.lastfind)
def onChange(self):
new = Toplevel(self)
new.title('SimpleEditor - change')
Label(new, text='Find text?', relief=RIDGE, width=15).grid(row=0, column=0)
Label(new, text='Change to?', relief=RIDGE, width=15).grid(row=1, column=0)
entry1 = Entry(new)
entry2 = Entry(new)
entry1.grid(row=0, column=1, sticky=EW)
entry2.grid(row=1, column=1, sticky=EW)
def onFind():
self.onFind(entry1.get())
def onApply():
self.onDoChange(entry1.get(), entry2.get())
Button(new, text='Find', command=onFind ).grid(row=0, column=2, sticky=EW)
Button(new, text='Apply', command=onApply).grid(row=1, column=2, sticky=EW)
new.columnconfigure(1, weight=1) # expandable entries
def onDoChange(self, findtext, changeto):
# on Apply in change dialog: change and refind
if self.text.tag_ranges(SEL): # must find first
self.text.delete(SEL_FIRST, SEL_LAST)
self.text.insert(INSERT, changeto) # deletes if empty
self.text.see(INSERT)
self.onFind(findtext) # goto next appear
self.text.update() # force refresh
def onGrep(self):
from PP4E.Gui.ShellGui.formrows import makeFormRow
popup = Toplevel()
popup.title('SimpleEditor - grep')
var1 = makeFormRow(popup, label='Directory root', width=18, browse=False)
var2 = makeFormRow(popup, label='Filename pattern', width=18, browse=False)
var3 = makeFormRow(popup, label='Search string', width=18, browse=False)
var4 = makeFormRow(popup, label='Content encoding', width=18, browse=False)
var1.set('.') # current dir
var2.set('*.py') # initial values
var4.set(sys.getdefaultencoding())
cb = lambda: self.onDoGrep(var1.get(), var2.get(), var3.get(), var4.get())
Button(popup, text='Go',command=cb).pack()
def onDoGrep(self, dirname, filenamepatt, grepkey, encoding):
import threading, queue
mypopup = Tk()
mypopup.title('SimpleEditor - grepping')
status = Label(mypopup, text='Grep thread searching for: %r...' % grepkey)
status.pack(padx=20, pady=20)
mypopup.protocol('WM_DELETE_WINDOW', lambda: None) # ignore X close
# start producer thread, consumer loop
myqueue = queue.Queue()
threadargs = (filenamepatt, dirname, grepkey, encoding, myqueue)
threading.Thread(target=self.grepThreadProducer, args=threadargs).start()
self.grepThreadConsumer(grepkey, encoding, myqueue, mypopup)
def grepThreadProducer(self, filenamepatt, dirname, grepkey, encoding, myqueue):
from PP4E.Tools.find import find
matches = []
try:
for filepath in find(pattern=filenamepatt, startdir=dirname):
try:
textfile = open(filepath, encoding=encoding)
for (linenum, linestr) in enumerate(textfile):
if grepkey in linestr:
msg = '%s@%d [%s]' % (filepath, linenum + 1, linestr)
matches.append(msg)
except UnicodeError as X:
print('Unicode error in:', filepath, X) # eg: decode, bom
except IOError as X:
print('IO error in:', filepath, X) # eg: permission
finally:
myqueue.put(matches) # stop consumer loop on find excs: filenames?
def grepThreadConsumer(self, grepkey, encoding, myqueue, mypopup):
import queue
try:
matches = myqueue.get(block=False)
except queue.Empty:
myargs = (grepkey, encoding, myqueue, mypopup)
self.after(250, self.grepThreadConsumer, *myargs)
else:
mypopup.destroy()
self.update()
if not matches:
showinfo('SimpleEditor', 'Grep found no matches for: %r' % grepkey)
else:
self.grepMatchesList(matches, grepkey, encoding)
def grepMatchesList(self, matches, grepkey, encoding):
from PP4E.Gui.Tour.scrolledlist import ScrolledList
print('Matches for %s: %s' % (grepkey, len(matches)))
class ScrolledFilenames(ScrolledList):
def runCommand(self, selection):
file, line = selection.split(' [', 1)[0].split('@')
editor = TextEditorMainPopup(
loadFirst=file, winTitle=' grep match', loadEncode=encoding)
editor.onGoto(int(line))
editor.text.focus_force()
popup = Tk()
popup.title('SimpleEditor - grep matches: %r (%s)' % (grepkey, encoding))
ScrolledFilenames(parent=popup, options=matches)
def onFontList(self):
self.fonts.append(self.fonts[0])
del self.fonts[0]
self.text.config(font=self.fonts[0])
def onColorList(self):
self.colors.append(self.colors[0])
del self.colors[0]
self.text.config(fg=self.colors[0]['fg'], bg=self.colors[0]['bg'])
def onPickFg(self):
self.pickColor('fg')
def onPickBg(self):
self.pickColor('bg')
def pickColor(self, part):
(triple, hexstr) = askcolor()
if hexstr:
self.text.config(**{part: hexstr})
def onInfo(self):
text = self.getAllText()
bytes = len(text)
lines = len(text.split('\n'))
words = len(text.split())
index = self.text.index(INSERT)
where = tuple(index.split('.'))
showinfo('SimpleEditor Information',
'Current location:\n\n' +
'line:\t%s\ncolumn:\t%s\n\n' % where +
'File text statistics:\n\n' +
'chars:\t%d\nlines:\t%d\nwords:\t%d\n' % (bytes, lines, words))
def onClone(self, makewindow=True):
if not makewindow:
new = None
else:
new = Toplevel()
myclass = self.__class__
myclass(new)
def onRunCode(self, parallelmode=True):
def askcmdargs():
return askstring('SimpleEditor', 'Commandline arguments?') or ''
from PP4E.launchmodes import System, Start, StartArgs, Fork
filemode = False
thefile = str(self.getFileName())
if os.path.exists(thefile):
filemode = askyesno('SimpleEditor', 'Run from file?')
self.update()
if not filemode: # run text string
cmdargs = askcmdargs()
namespace = {'__name__': '__main__'} # run as top-level
sys.argv = [thefile] + cmdargs.split() # could use threads
exec(self.getAllText() + '\n', namespace)
elif self.text_edit_modified():
showerror('SimpleEditor', 'Text changed: you must save before run')
else:
cmdargs = askcmdargs()
mycwd = os.getcwd() # cwd may be root
dirname, filename = os.path.split(thefile) # get dir, base
os.chdir(dirname or mycwd) # cd for filenames
thecmd = filename + ' ' + cmdargs
if not parallelmode: # run as file
System(thecmd, thecmd)() # block editor
else:
if sys.platform[:3] == 'win': # spawn in parallel
run = StartArgs if cmdargs else Start
run(thecmd, thecmd)() # or always Spawn
else:
Fork(thecmd, thecmd)() # spawn in parallel
os.chdir(mycwd) # go back to my dir
def onPickFont(self):
from PP4E.Gui.ShellGui.formrows import makeFormRow
popup = Toplevel(self)
popup.title('SimpleEditor - font')
var1 = makeFormRow(popup, label='Family', browse=False)
var2 = makeFormRow(popup, label='Size', browse=False)
var3 = makeFormRow(popup, label='Style', browse=False)
var1.set('courier')
var2.set('12')
var3.set('bold italic')
Button(popup, text='Apply', command=
lambda: self.onDoFont(var1.get(), var2.get(), var3.get())).pack()
def onDoFont(self, family, size, style):
try:
self.text.config(font=(family, int(size), style))
except:
showerror('SimpleEditor', 'Bad font specification')
def isEmpty(self):
return not self.getAllText()
def getAllText(self):
return self.text.get('1.0', END+'-1c')
def setAllText(self, text):
self.text.delete('1.0', END)
self.text.insert(END, text)
self.text.mark_set(INSERT, '1.0')
self.text.see(INSERT)
def clearAllText(self):
self.text.delete('1.0', END)
def getFileName(self):
return self.currfile
def setFileName(self, name): # see also: onGoto(linenum)
self.currfile = name # for save
self.filelabel.config(text=str(name))
def setKnownEncoding(self, encoding='utf-8'):
self.knownEncoding = encoding
def setBg(self, color):
self.text.config(bg=color) # to set manually from code
def setFg(self, color):
self.text.config(fg=color)
def setFont(self, font):
self.text.config(font=font) # ('family', size, 'style')
def setHeight(self, lines): # default = 24h x 80w
self.text.config(height=lines) # may also be from textCongif.py
def setWidth(self, chars):
self.text.config(width=chars)
def clearModified(self):
self.text.edit_modified(0) # clear modified flag
def isModified(self):
return self.text_edit_modified() # changed since last reset?
def help(self):
showinfo('About SimpleEditor', helptext % ((Version,)*2))
class TextEditorMain(TextEditor, GuiMakerWindowMenu):
def __init__(self, parent=None, loadFirst='', loadEncode=''):
# editor fills whole parent window
GuiMaker.__init__(self, parent) # use main window menus
TextEditor.__init__(self, loadFirst, loadEncode) # GuiMaker frame packs self
self.master.title('SimpleEditor ' + Version)
self.master.iconname('SimpleEditor')
self.master.protocol('WM_DELETE_WINDOW', self.onQuit)
TextEditor.editwindows.append(self)
def onQuit(self): # on a Quit request in the GUI
close = not self.text_edit_modified() # check self, ask?, check others
if not close:
close = askyesno('SimpleEditor', 'Text changed: quit and discard changes?')
if close:
windows = TextEditor.editwindows
changed = [w for w in windows if w != self and w.text_edit_modified()]
if not changed:
GuiMaker.quit(self)
else:
numchange = len(changed)
verify = '%s other edit window%s changed: quit and discard anyhow?'
verify = verify % (numchange, 's' if numchange > 1 else '')
if askyesno('SimpleEditor', verify):
GuiMaker.quit(self)
class TextEditorMainPopup(TextEditor, GuiMakerWindowMenu):
def __init__(self, parent=None, loadFirst='', winTitle='', loadEncode=''):
# create own window
self.popup = Toplevel(parent)
GuiMaker.__init__(self, self.popup) # use main window menus
TextEditor.__init__(self, loadFirst, loadEncode) # a frame in a new popup
assert self.master == self.popup
self.popup.title('SimpleEditor ' + Version + winTitle)
self.popup.iconname('SimpleEditor')
self.popup.protocol('WM_DELETE_WINDOW', self.onQuit)
TextEditor.editwindows.append(self)
def onQuit(self):
close = not self.text_edit_modified()
if not close:
close = askyesno('SimpleEditor', 'Text changed: quit and discard changes?')
if close:
self.popup.destroy()
TextEditor.editwindows.remove(self)
def onClone(self):
TextEditor.onClone(self, makewindow=False)
class TextEditorComponent(TextEditor, GuiMakerFrameMenu):
def __init__(self, parent=None, loadFirst='', loadEncode=''):
# use Frame-based menus
GuiMaker.__init__(self, parent)
TextEditor.__init__(self, loadFirst, loadEncode)
def onQuit(self):
close = not self.text_edit_modified()
if not close:
close = askyesno('SimpleEditor', 'Text changed: quit and discard changes?')
if close:
self.destroy()
class TextEditorComponentMinimal(TextEditor, GuiMakerFrameMenu):
def __init__(self, parent=None, loadFirst='', deleteFile=True, loadEncode=''):
self.deleteFile = deleteFile
GuiMaker.__init__(self, parent)
TextEditor.__init__(self, loadFirst, loadEncode)
def start(self):
TextEditor.start(self)
for i in range(len(self.toolBar)):
if self.toolBar[i][0] == 'Quit': # or just disable file
break
if self.deleteFile:
for i in range(len(self.menuBar)):
if self.menuBar[i][0] == 'File':
del self.menuBar[i]
break
else:
for (name, key, items) in self.menuBar:
if name == 'File':
items.append([1,2,3,4,6])
def testPopup():
# see PyView and PyMail for component tests
root = Tk()
TextEditorMainPopup(root)
TextEditorMainPopup(root)
Button(root, text='More', command=TextEditorMainPopup).pack(fill=X)
Button(root, text='Quit', command=root.quit).pack(fill=X)
root.mainloop()
def main():
try:
fname = sys.argv[1]
except IndexError:
fname = None
TextEditorMain(loadFirst=fname).pack(expand=YES, fill=BOTH)
mainloop()
if __name__ == '__main__':
main()