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Edit File : WindowList.py \| Size : 2.41 KB
from tkinter import * class WindowList: def __init__(self): self.dict = {} self.callbacks = [] def add(self, window): window.after_idle(self.call_callbacks) self.dict[str(window)] = window def delete(self, window): try: del self.dict[str(window)] except KeyError: # Sometimes, destroy() is called twice pass self.call_callbacks() def add_windows_to_menu(self, menu): list = [] for key in self.dict: window = self.dict[key] try: title = window.get_title() except TclError: continue list.append((title, key, window)) list.sort() for title, key, window in list: menu.add_command(label=title, command=window.wakeup) def register_callback(self, callback): self.callbacks.append(callback) def unregister_callback(self, callback): try: self.callbacks.remove(callback) except ValueError: pass def call_callbacks(self): for callback in self.callbacks: try: callback() except: t, v, tb = sys.exc_info() print("warning: callback failed in WindowList", t, ":", v) registry = WindowList() add_windows_to_menu = registry.add_windows_to_menu register_callback = registry.register_callback unregister_callback = registry.unregister_callback class ListedToplevel(Toplevel): def __init__(self, master, **kw): Toplevel.__init__(self, master, kw) registry.add(self) self.focused_widget = self def destroy(self): registry.delete(self) Toplevel.destroy(self) # If this is Idle's last window then quit the mainloop # (Needed for clean exit on Windows 98) if not registry.dict: self.quit() def update_windowlist_registry(self, window): registry.call_callbacks() def get_title(self): # Subclass can override return self.wm_title() def wakeup(self): try: if self.wm_state() == "iconic": self.wm_withdraw() self.wm_deiconify() self.tkraise() self.focused_widget.focus_set() except TclError: # This can happen when the window menu was torn off. # Simply ignore it. pass Back

Edit File : WindowList.py | Size : 2.41 KB

from tkinter import *

class WindowList:

def __init__(self):
        self.dict = {}
        self.callbacks = []

def add(self, window):
        window.after_idle(self.call_callbacks)
        self.dict[str(window)] = window

def delete(self, window):
        try:
            del self.dict[str(window)]
        except KeyError:
            # Sometimes, destroy() is called twice
            pass
        self.call_callbacks()

def add_windows_to_menu(self,  menu):
        list = []
        for key in self.dict:
            window = self.dict[key]
            try:
                title = window.get_title()
            except TclError:
                continue
            list.append((title, key, window))
        list.sort()
        for title, key, window in list:
            menu.add_command(label=title, command=window.wakeup)

def register_callback(self, callback):
        self.callbacks.append(callback)

def unregister_callback(self, callback):
        try:
            self.callbacks.remove(callback)
        except ValueError:
            pass

def call_callbacks(self):
        for callback in self.callbacks:
            try:
                callback()
            except:
                t, v, tb = sys.exc_info()
                print("warning: callback failed in WindowList", t, ":", v)

registry = WindowList()

add_windows_to_menu = registry.add_windows_to_menu
register_callback = registry.register_callback
unregister_callback = registry.unregister_callback

class ListedToplevel(Toplevel):

def __init__(self, master, **kw):
        Toplevel.__init__(self, master, kw)
        registry.add(self)
        self.focused_widget = self

def destroy(self):
        registry.delete(self)
        Toplevel.destroy(self)
        # If this is Idle's last window then quit the mainloop
        # (Needed for clean exit on Windows 98)
        if not registry.dict:
            self.quit()

def update_windowlist_registry(self, window):
        registry.call_callbacks()

def get_title(self):
        # Subclass can override
        return self.wm_title()

def wakeup(self):
        try:
            if self.wm_state() == "iconic":
                self.wm_withdraw()
                self.wm_deiconify()
            self.tkraise()
            self.focused_widget.focus_set()
        except TclError:
            # This can happen when the window menu was torn off.
            # Simply ignore it.
            pass

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