def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
# Create the name manager instance and move it to another thread.
# This will cause all the slots to be run in that other thread
# instead of our GUI thread.
self.name_manager = NameManager()
self.name_manager_thread = QThread()
self.name_manager.moveToThread(self.name_manager_thread)
self.name_manager_thread.start()
# Create our network manager
self.network_manager = NetworkManager()
# When the name manager emits it's full name list, we want to
# repopulate our list.
self.name_manager.names_signal.connect(self.populate_list)
# When the restore list button is clicked, let the name manager
# know we need all the names in long term storage
self.restore_list_button.clicked.connect(self.name_manager.get_all_names)
self.add_name_signal.connect(self.name_manager.store_name)
self.add_name_signal.connect(self.cache_name)
self.submit_button.clicked.connect(self.say_hello)
self.clear_list_button.clicked.connect(self.clear_list)
def parse_model(self, m):
# Dict used to translate from arg position to anchor position
anchor_codes = ['w', 'e', 'n', 's']
nm = NameManager.Instance()
# nodes = {1: 'label1', 2: 'label2', ...}
# edges = [(1, 2, 'e'), ...]
nodes = {}
edges = []
predicates = m.split()
for n, p in enumerate(predicates):
parts = p.split('(')
atom = parts[0]
terms = parts[1] if len(parts) > 1 else []
nodes[n] = atom
if terms:
terms = [t.strip(' )') for t in terms.split(',')]
atom_anchors = nm.get(atom).hook_points
term_anchors = [a for i, a in enumerate(anchor_codes)
if atom_anchors[i]]
assert len(terms) == len(term_anchors)
for i, t in enumerate(terms):
nodes[t] = t
edges.append((n, t, term_anchors[i]))
return nodes, edges
def on_release(self):
if self.parent is None:
return
if self.state == 'down':
asp.AtomWidget.active_atom = NameManager.Instance().get(self.text)
self.parent.update_atom_editor(self.text)
self.parent.set_item('atom')
else:
asp.AtomWidget.active_atom = None
self.parent.update_atom_editor('')
class GlobalContainer(box.BoxLayout):
graph_list = prop.ListProperty([])
active_graph = prop.ObjectProperty(None)
name_manager = NameManager.Instance()
show_sidepanel = prop.BooleanProperty(True)
modestr = prop.StringProperty('insert')
itemstr = prop.StringProperty('atom')
modes = {'insert': asp.Mode.INSERT, 'select': asp.Mode.SELECT}
items = {
'atom': asp.Item.ATOM,
'ellipse': asp.Item.ELLIPSE,
'rectangle': asp.Item.SQUARE
}
def __init__(self, **kwargs):
super(GlobalContainer, self).__init__(**kwargs)
self._keyboard = None
self.request_keyboard()
self.working_dir = './'
self.tutorial = None
self.popup_stack = []
window.Window.bind(on_resize=self.on_resize)
if DEBUG:
self.tracker = ClassTracker()
self.tracker.track_object(MenuButton)
self.all_objects = muppy.get_objects()
def request_keyboard(self):
self._keyboard = window.Window.request_keyboard(
self._keyboard_release, self)
self._keyboard.bind(on_key_down=self._on_keyboard_down)
def _keyboard_catch(self):
self._keyboard.bind(on_key_down=self._on_keyboard_down)
def _keyboard_release(self):
self._keyboard.unbind(on_key_down=self._on_keyboard_down)
#self._keyboard = None
def _on_keyboard_down(self, keyboard, keycode, text, modifiers):
if keycode[1] == 'escape':
base.stopTouchApp()
elif keycode[1] == 'd':
self.set_mode('insert')
elif keycode[1] == 's':
self.set_mode('select')
elif keycode[1] == 'w':
self.set_item('atom')
elif keycode[1] == 'e':
self.set_item('ellipse')
elif keycode[1] == 'r':
self.set_item('rectangle')
elif keycode[1] == 'p':
self.active_graph.show_tree(0)
elif keycode[1] == 'o':
self.view_symbolic_formula()
elif keycode[1] == 'n':
self.show_gringo_query()
elif keycode[1] == 'g':
self.show_save()
elif keycode[1] == 'l':
self.show_load()
elif keycode[1] == 'y':
print self.name_manager.get_all()
print asp.Line.get_all_lines()
elif keycode[1] == 't':
self.toggle_sidepanel()
elif keycode[1] == 'tab':
if not self.show_sidepanel:
self.toggle_sidepanel()
self.ids.atom_input.focus = True
elif keycode[1] == '.':
if DEBUG:
rb = refbrowser.InteractiveBrowser(self)
rb.main()
# self.all_objects = muppy.get_objects()
# sum1 = summary.summarize(self.all_objects)
# summary.print_(sum1)
# self.tracker.create_snapshot()
# self.tracker.stats.print_summary()
return True
def _focus_name_list(self, value):
if value and (asp.AtomWidget.active_atom is not None):
previous_name = asp.AtomWidget.active_atom.name
for button in self.ids.name_list.children:
if (button.text == previous_name) and (button.state != 'down'):
button.trigger_action()
elif value:
if self.ids.name_list.children:
self.ids.name_list.children[-1].trigger_action()
else:
for button in self.ids.name_list.children:
if button.state == 'down':
button.trigger_action()
def on_resize(self, window, width, height):
if self.show_sidepanel:
self.ids.sidepanel.width = self.width * .15
self.active_graph.size = self.ids.stencilview.size
def toggle_sidepanel(self):
self.show_sidepanel = not self.show_sidepanel
if self.show_sidepanel:
width = self.width * .15
else:
width = 0
anim.Animation(width=width, d=.15,
t='out_quart').start(self.ids.sidepanel)
if not self.show_sidepanel:
self.ids.sidepanel.focus = False
# Also release keyboard
#self.update_sourcecode()
def update_atom_editor(self, name):
editor = self.ids.atom_editor
if name == '':
editor.disabled = True
else:
if editor.disabled:
editor.disabled = False
atom = self.name_manager.get(name)
editor.update(atom)
def update_atom(self,
name,
new_name='',
new_hook_points=[],
is_constant=False):
atom = self.name_manager.get(name)
if new_name <> '':
atom.name = new_name
if len(new_hook_points) == 4:
atom.hook_points = new_hook_points
# print id(atom.hook_points)
atom.is_constant = is_constant
def register_atom(self,
name,
hooks=[False, False, False, False],
is_constant=False):
if name == '':
return
children = self.ids.name_list.children
new_button = None
name_to_insert = name
i = len(children) - 1
# If the name doesn't exist, register atom
if self.name_manager.get(name) is None:
self.name_manager.register(name, asp.Atom(name, hooks,
is_constant))
# print id(self.name_manager.get(name).hook_points)
# Insert in name_list sorted by name
while i >= 0:
if children[i].text < name_to_insert:
#print children[i].text, '<', name_to_insert
pass
elif children[i].text == name_to_insert:
# Already exists
if children[i].state != 'down':
children[i].trigger_action()
return
elif children[i].text > name_to_insert:
#print children[i].text, '>', name_to_insert
temp = children[i].text
children[i].text = name_to_insert
name_to_insert = temp
if new_button == None:
new_button = children[i]
i -= 1
self.ids.name_list.add_widget(AtomSelectionButton(text=name_to_insert))
if new_button == None:
new_button = children[0]
if new_button.state == 'down':
asp.AtomWidget.active_atom = self.name_manager.get(name)
self.update_atom_editor(name)
self.set_item('atom')
else:
new_button.trigger_action()
def rename_atom(self, new_name):
old_name = ''
for button in self.ids.name_list.children:
if button.state == 'down':
old_name = button.text
selected_button = button
if (old_name != '') and (new_name != ''):
try:
atom = self.name_manager.get(old_name)
exists = self.name_manager.get(new_name)
assert atom is not None
assert exists is None
except AssertionError:
#self.show_error('Name already exists.')
print 'Name already exists.'
return
selected_button.text = new_name
atom.name = new_name
self.name_manager.unregister(old_name)
self.name_manager.register(new_name, atom)
self.update_atom_editor(new_name)
def delete_atom(self):
for button in self.ids.name_list.children:
if button.state == 'down':
self.name_manager.unregister(button.text)
self.active_graph.delete_atom(button.text)
asp.AtomWidget.active_atom = None
self.ids.name_list.remove_widget(button)
self.update_atom_editor('')
def clear_atoms(self):
self.ids.name_list.clear_widgets()
self.name_manager.clear()
self.update_atom_editor('')
asp.AtomWidget.active_atom = None
def new_graph(self):
# TODO: Migrate to tab system
asp.Line.clear_lines()
self.clear_atoms()
if self.active_graph is None:
g = asp.RootWidget()
self.graph_list.append(g)
self.active_graph = g
self.ids.stencilview.add_widget(g)
else:
self.active_graph.delete_tree()
def close_graph(self):
if self.active_graph is not None:
asp.Line.clear_lines()
self.active_graph.delete_tree()
self.active_graph.delete_root()
self.clear_atoms()
self.graph_list.pop()
self.active_graph = None
def set_mode(self, mode):
try:
prev_mode = self.active_graph.mode
new_mode = self.modes[mode]
if new_mode == asp.Mode.INSERT:
self.active_graph.show_hooks()
else:
if prev_mode == asp.Mode.INSERT:
self.active_graph.hide_hooks()
self.active_graph.mode = new_mode
self.modestr = mode
except KeyError as err:
print 'ERROR: Invalid mode {0} requested.'.format(str(err))
def set_item(self, item):
try:
self.active_graph.item = self.items[item]
self.itemstr = item
except KeyError as err:
print 'ERROR: Invalid item {0} requested.'.format(str(err))
except AttributeError:
pass
if item == 'atom':
self._focus_name_list(True)
else:
self._focus_name_list(False)
def push_popup(self, popup):
self.popup_stack.append(popup)
popup.open()
def dismiss_popup(self):
popup = self.popup_stack.pop()
popup.dismiss()
def show_rename_atom(self):
content = TextInputDialog(caption="Enter new name",
validate_callback=self.rename_atom,
cancel=self.dismiss_popup)
p = CustomPopup(self,
title="Rename atom",
content=content,
size_hint=(0.4, 0.25))
self.push_popup(p)
def show_load(self):
content = LoadDialog(load=self.load, cancel=self.dismiss_popup)
content.ids.filechooser.path = self.working_dir
p = CustomPopup(self,
title="Load file",
content=content,
size_hint=(0.9, 0.9))
self.push_popup(p)
def show_save(self):
content = SaveDialog(save=self.save, cancel=self.dismiss_popup)
content.ids.filechooser.path = self.working_dir
p = CustomPopup(self,
title="Save file",
content=content,
size_hint=(0.9, 0.9))
self.push_popup(p)
def show_export(self):
content = ExportDialog(export=self.export, cancel=self.dismiss_popup)
content.ids.filechooser.path = self.working_dir
p = CustomPopup(self,
title="Export file",
content=content,
size_hint=(0.9, 0.9))
self.push_popup(p)
def show_gringo_query(self):
caption = "Enter desired predicates separated by commas"
content = TextInputDialog(caption=caption,
validate_callback=self.gringo_query,
dismiss_on_validate=False,
focus=False,
cancel=self.dismiss_popup)
p = CustomPopup(self,
title="Output predicates",
content=content,
size_hint=(0.4, 0.25))
self.push_popup(p)
def show_stable_models(self, solver):
models = solver.get_models()
content = None
if len(models) == 0:
content = ErrorDialog('Unsatisfiable', cancel=self.dismiss_popup)
else:
solver.generate_graph(models[0])
content = StableModelDialog(solver, cancel=self.dismiss_popup)
content.ids.img.reload()
p = CustomPopup(self,
catch_keyboard=False,
title="Stable Models",
content=content,
size_hint=(0.9, 0.9))
self.push_popup(p)
def show_error(self, err_str):
content = ErrorDialog(err_str, cancel=self.dismiss_popup)
p = CustomPopup(self,
catch_keyboard=False,
title="Error",
content=content,
size_hint=(0.4, 0.3))
self.push_popup(p)
def show_about(self):
content = AboutDialog(cancel=self.dismiss_popup)
p = CustomPopup(self,
catch_keyboard=False,
title="About " + __title__,
content=content,
size_hint=(0.5, 0.5))
self.push_popup(p)
def load(self, path, filename):
self.close_graph()
self.working_dir = path
try:
f = os.path.join(path, filename[0])
# Temporal line storage. Its contents are arranged as follows:
# { line_id: (graph, hook_list) , ... }
lines = {}
with open(f, 'r') as stream:
for line in stream:
if line.startswith(NameParser.TOKENS['name']):
name, hooks, is_constant = NameParser.parse_name(line)
self.register_atom(name, hooks, is_constant)
if line.startswith(NameParser.TOKENS['line']):
line_id, graph = NameParser.parse_line(line)
lines[line_id] = (graph, [None] * len(graph))
new_graph = lang.Builder.load_file(f)
self.ids.stencilview.add_widget(new_graph)
self.active_graph = new_graph
#self.graph_list.pop()
self.graph_list.append(new_graph)
for w in self.active_graph.walk(restrict=True):
if isinstance(w, asp.AtomWidget):
w._deferred_init()
for i in w.get_line_info():
line_id = i[0]
hook_index = i[1]
lines[line_id][1][hook_index] = i[2]
elif isinstance(w, asp.NexusWidget):
for i in w.line_info:
line_id = i[0]
hook_index = i[1]
lines[line_id][1][hook_index] = w
for line, info in lines.iteritems():
print line, info
asp.Line.build_from_graph(info[0], info[1])
self.set_mode(self.modestr)
self.set_item(self.itemstr)
self.dismiss_popup()
except (KeyboardInterrupt, SystemExit):
raise
except:
self.dismiss_popup()
self.close_graph()
self.new_graph()
self.show_error('Corrupted file.')
def save(self, path, filename):
self.working_dir = path
with open(os.path.join(path, filename), 'w') as stream:
stream.write('#:kivy 1.0.9\n\n')
for (name, atom) in self.name_manager.get_all():
stream.write(
NameParser.get_name_str(name, atom.hook_points,
atom.is_constant))
for line in asp.Line.get_all_lines():
stream.write(
NameParser.get_line_str(line.line_id,
line.get_full_graph()))
stream.write('\n')
stream.write(self.active_graph.get_tree(0))
self.dismiss_popup()
def export(self, path, filename):
_, ext = os.path.splitext(filename)
if ext == '.png':
self.active_graph.export_to_png(os.path.join(path, filename))
elif ext == '.lp':
rpn = self.active_graph.get_formula_RPN()
constants = self.active_graph.get_constants()
solver = eg_solver.Solver()
solver.set_formula(rpn, constants)
rules = solver.generate_asp_rules()
with open(os.path.join(path, filename), 'w') as stream:
for r in rules:
stream.write(r)
stream.write('\n')
else:
error_str = 'File extension not supported.'
print error_str
self.show_error(error_str)
return
self.dismiss_popup()
def highlight_variables(self):
self.active_graph.highlight_variables()
def view_symbolic_formula(self):
print self.active_graph.get_formula()
def gringo_query(self, show_predicates):
def generate_show_statements(predicates):
pred_list = predicates.split(',')
pred_list = map(lambda s: s.strip(), pred_list)
n_args = (lambda name: self.name_manager.get(name).hook_points.
count(True))
pred_list = [p + '/' + str(n_args(p)) for p in pred_list]
show_list = ['#show {0}.'.format(p) for p in pred_list]
return show_list
self.dismiss_popup()
rpn = self.active_graph.get_formula_RPN()
rpn = norm.LIT.TRUE if rpn == '' else rpn
constants = self.active_graph.get_constants()
print 80 * '-'
print 'RPN formula:\n', rpn
solver = eg_solver.Solver()
result = ''
try:
show_statements = []
if show_predicates:
try:
show_statements = generate_show_statements(show_predicates)
except Exception:
pass
solver.set_formula(rpn, constants)
result = solver.solve(show=show_statements)
except norm.MalformedFormulaError:
self.show_error('Malformed formula.')
return
except RuntimeError, e:
print e
self.show_error(str(e))
return
self.show_stable_models(solver)
class MainWindow(QMainWindow, Ui_MainWindow):
add_name_signal = Signal(unicode)
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
# Create the name manager instance and move it to another thread.
# This will cause all the slots to be run in that other thread
# instead of our GUI thread.
self.name_manager = NameManager()
self.name_manager_thread = QThread()
self.name_manager.moveToThread(self.name_manager_thread)
self.name_manager_thread.start()
# Create our network manager
self.network_manager = NetworkManager()
# When the name manager emits it's full name list, we want to
# repopulate our list.
self.name_manager.names_signal.connect(self.populate_list)
# When the restore list button is clicked, let the name manager
# know we need all the names in long term storage
self.restore_list_button.clicked.connect(self.name_manager.get_all_names)
self.add_name_signal.connect(self.name_manager.store_name)
self.add_name_signal.connect(self.cache_name)
self.submit_button.clicked.connect(self.say_hello)
self.clear_list_button.clicked.connect(self.clear_list)
def clean_up(self):
"""
You can't rely on __del__ properly closing down all your threads. So use
a clean_up method that will be called manually.
:return:
"""
if hasattr(self, 'network_manager_thread'):
self.network_manager.api.end_connection()
self.network_manager.api.join()
self.network_manager_thread.quit()
self.name_manager_thread.quit()
def start_api(self, ip, port):
"""
Connect to an external API service which will send us names
:param ip: IP address of server
:param port: Port of service
:return:
"""
self.network_manager_thread = QThread()
self.network_manager.moveToThread(self.network_manager_thread)
self.network_manager.message_signal.connect(self.handle_message)
self.network_manager_thread.start()
self.network_manager.connect_signal.emit(ip, port)
@Slot()
def handle_message(self, message):
"""
Handle incoming names from the API. We simply want to follow the
established procedure to add a new name. So we just emit on that
signal.
:param message: String name
:return:
"""
self.add_name_signal.emit(message)
@Slot()
def say_hello(self):
self.add_name_signal.emit(self.name_text.text())
self.hello_label.setText(u"{} {}".format(GREETING, self.name_text.text()))
self.name_text.setText('')
@Slot()
def cache_name(self, name):
self.names_list.addItem(name)
@Slot()
def clear_list(self):
self.names_list.clear()
@Slot()
def populate_list(self, names):
"""
Clears and repopulates the list with the given list
:param names: List of names
:return:
"""
self.clear_list()
for name in names:
self.names_list.addItem(name)