| 1 | from Tkinter import * |
| 2 | |
| 3 | class WindowList: |
| 4 | |
| 5 | def __init__(self): |
| 6 | self.dict = {} |
| 7 | self.callbacks = [] |
| 8 | |
| 9 | def add(self, window): |
| 10 | window.after_idle(self.call_callbacks) |
| 11 | self.dict[str(window)] = window |
| 12 | |
| 13 | def delete(self, window): |
| 14 | try: |
| 15 | del self.dict[str(window)] |
| 16 | except KeyError: |
| 17 | # Sometimes, destroy() is called twice |
| 18 | pass |
| 19 | self.call_callbacks() |
| 20 | |
| 21 | def add_windows_to_menu(self, menu): |
| 22 | list = [] |
| 23 | for key in self.dict.keys(): |
| 24 | window = self.dict[key] |
| 25 | try: |
| 26 | title = window.get_title() |
| 27 | except TclError: |
| 28 | continue |
| 29 | list.append((title, window)) |
| 30 | list.sort() |
| 31 | for title, window in list: |
| 32 | menu.add_command(label=title, command=window.wakeup) |
| 33 | |
| 34 | def register_callback(self, callback): |
| 35 | self.callbacks.append(callback) |
| 36 | |
| 37 | def unregister_callback(self, callback): |
| 38 | try: |
| 39 | self.callbacks.remove(callback) |
| 40 | except ValueError: |
| 41 | pass |
| 42 | |
| 43 | def call_callbacks(self): |
| 44 | for callback in self.callbacks: |
| 45 | try: |
| 46 | callback() |
| 47 | except: |
| 48 | print "warning: callback failed in WindowList", \ |
| 49 | sys.exc_type, ":", sys.exc_value |
| 50 | |
| 51 | registry = WindowList() |
| 52 | |
| 53 | add_windows_to_menu = registry.add_windows_to_menu |
| 54 | register_callback = registry.register_callback |
| 55 | unregister_callback = registry.unregister_callback |
| 56 | |
| 57 | |
| 58 | class ListedToplevel(Toplevel): |
| 59 | |
| 60 | def __init__(self, master, **kw): |
| 61 | Toplevel.__init__(self, master, kw) |
| 62 | registry.add(self) |
| 63 | self.focused_widget = self |
| 64 | |
| 65 | def destroy(self): |
| 66 | registry.delete(self) |
| 67 | Toplevel.destroy(self) |
| 68 | # If this is Idle's last window then quit the mainloop |
| 69 | # (Needed for clean exit on Windows 98) |
| 70 | if not registry.dict: |
| 71 | self.quit() |
| 72 | |
| 73 | def update_windowlist_registry(self, window): |
| 74 | registry.call_callbacks() |
| 75 | |
| 76 | def get_title(self): |
| 77 | # Subclass can override |
| 78 | return self.wm_title() |
| 79 | |
| 80 | def wakeup(self): |
| 81 | try: |
| 82 | if self.wm_state() == "iconic": |
| 83 | self.wm_withdraw() |
| 84 | self.wm_deiconify() |
| 85 | self.tkraise() |
| 86 | self.focused_widget.focus_set() |
| 87 | except TclError: |
| 88 | # This can happen when the window menu was torn off. |
| 89 | # Simply ignore it. |
| 90 | pass |