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reverted r55167, see #9854
[wxWidgets.git] / src / common / event.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/common/event.cpp
3 // Purpose: Event classes
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 01/02/97
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #include "wx/event.h"
28 #include "wx/evtloop.h"
29
30 #ifndef WX_PRECOMP
31 #include "wx/list.h"
32 #include "wx/app.h"
33 #include "wx/utils.h"
34 #include "wx/stopwatch.h"
35 #include "wx/module.h"
36
37 #if wxUSE_GUI
38 #include "wx/window.h"
39 #include "wx/control.h"
40 #include "wx/dc.h"
41 #include "wx/textctrl.h"
42 #include "wx/validate.h"
43 #endif // wxUSE_GUI
44 #endif
45
46 #include "wx/thread.h"
47
48 #if wxUSE_BASE
49 #include "wx/ptr_scpd.h"
50
51 wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
52 wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
53 #endif // wxUSE_BASE
54
55 // ----------------------------------------------------------------------------
56 // wxWin macros
57 // ----------------------------------------------------------------------------
58
59 #if wxUSE_BASE
60 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
61 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
62 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
63 #endif // wxUSE_BASE
64
65 #if wxUSE_GUI
66 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
67 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
68 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
95 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
96 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
97 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
98 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
99 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
100 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
101 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
102 #endif // wxUSE_GUI
103
104 #if wxUSE_BASE
105
106 const wxEventTable *wxEvtHandler::GetEventTable() const
107 { return &wxEvtHandler::sm_eventTable; }
108
109 const wxEventTable wxEvtHandler::sm_eventTable =
110 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
111
112 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
113 { return wxEvtHandler::sm_eventHashTable; }
114
115 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
116
117 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
118 { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
119
120
121 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
122 // leaked, so we need to manually clean up all event tables before checking for
123 // the memory leaks when using it, however this breaks re-initializing the
124 // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
125 // event tables won't be rebuilt the next time, so disable this by default
126 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
127
128 class wxEventTableEntryModule: public wxModule
129 {
130 public:
131 wxEventTableEntryModule() { }
132 virtual bool OnInit() { return true; }
133 virtual void OnExit() { wxEventHashTable::ClearAll(); }
134
135 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
136 };
137
138 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
139
140 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
141
142 // ----------------------------------------------------------------------------
143 // global variables
144 // ----------------------------------------------------------------------------
145
146 // List containing event handlers with pending events (each handler can occur
147 // at most once here)
148 wxList *wxPendingEvents = NULL;
149
150 #if wxUSE_THREADS
151 // protects wxPendingEvents list
152 wxCriticalSection *wxPendingEventsLocker = NULL;
153 #endif
154
155 // common event types are defined here, other event types are defined by the
156 // components which use them
157
158 const wxEventType wxEVT_FIRST = 10000;
159 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
160
161 DEFINE_EVENT_TYPE(wxEVT_NULL)
162 DEFINE_EVENT_TYPE(wxEVT_IDLE)
163 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
164 DEFINE_EVENT_TYPE(wxEVT_TIMER)
165
166 #endif // wxUSE_BASE
167
168 #if wxUSE_GUI
169
170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
179 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
180 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
181 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
182 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
183 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
184 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
185 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
186 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED)
187 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
188
189 // Mouse event types
190 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
191 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
192 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
193 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
194 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
195 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
196 DEFINE_EVENT_TYPE(wxEVT_MOTION)
197 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
198 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
199 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
200 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
201 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
202 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
203 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
204 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
205 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
206 DEFINE_EVENT_TYPE(wxEVT_AUX1_DOWN)
207 DEFINE_EVENT_TYPE(wxEVT_AUX1_UP)
208 DEFINE_EVENT_TYPE(wxEVT_AUX1_DCLICK)
209 DEFINE_EVENT_TYPE(wxEVT_AUX2_DOWN)
210 DEFINE_EVENT_TYPE(wxEVT_AUX2_UP)
211 DEFINE_EVENT_TYPE(wxEVT_AUX2_DCLICK)
212
213 // Non-client mouse events
214 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
215 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
216 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
217 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
218 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
219 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
220 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
221 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
222 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
223 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
224 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
225 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
226
227 // Character input event type
228 DEFINE_EVENT_TYPE(wxEVT_CHAR)
229 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
230 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
231 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
232 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
233 #if wxUSE_HOTKEY
234 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
235 #endif
236
237 // Set cursor event
238 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
239
240 // wxScrollbar and wxSlider event identifiers
241 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
242 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
243 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
244 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
245 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
246 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
247 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
248 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
249 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
250
251 // Scroll events from wxWindow
252 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
253 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
254 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
255 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
256 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
257 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
258 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
259 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
260
261 // System events
262 DEFINE_EVENT_TYPE(wxEVT_SIZE)
263 DEFINE_EVENT_TYPE(wxEVT_SIZING)
264 DEFINE_EVENT_TYPE(wxEVT_MOVE)
265 DEFINE_EVENT_TYPE(wxEVT_MOVING)
266 DEFINE_EVENT_TYPE(wxEVT_MOVE_START)
267 DEFINE_EVENT_TYPE(wxEVT_MOVE_END)
268 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
269 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
270 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
271 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
272 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
273 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
274 DEFINE_EVENT_TYPE(wxEVT_CREATE)
275 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
276 DEFINE_EVENT_TYPE(wxEVT_SHOW)
277 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
278 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
279 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
280 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
281 DEFINE_EVENT_TYPE(wxEVT_PAINT)
282 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
283 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
284 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
285 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
286 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
287 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
288 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
289 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
290 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
291 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
292 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
293 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
294 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
295 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
296 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
297 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
298 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
299 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
300 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
301 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
302 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
303 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
304
305 // Clipboard events
306 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
307 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
308 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
309
310 // Generic command events
311 // Note: a click is a higher-level event than button down/up
312 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
313 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
314 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
315 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
316 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
317 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
318 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
319
320 // Help events
321 DEFINE_EVENT_TYPE(wxEVT_HELP)
322 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
323
324 #endif // wxUSE_GUI
325
326 #if wxUSE_BASE
327
328 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
329
330 // ============================================================================
331 // implementation
332 // ============================================================================
333
334 // ----------------------------------------------------------------------------
335 // event initialization
336 // ----------------------------------------------------------------------------
337
338 int wxNewEventType()
339 {
340 // MT-FIXME
341 static int s_lastUsedEventType = wxEVT_FIRST;
342
343 return s_lastUsedEventType++;
344 }
345
346 // ----------------------------------------------------------------------------
347 // wxEvent
348 // ----------------------------------------------------------------------------
349
350 /*
351 * General wxWidgets events, covering
352 * all interesting things that might happen (button clicking, resizing,
353 * setting text in widgets, etc.).
354 *
355 * For each completely new event type, derive a new event class.
356 *
357 */
358
359 wxEvent::wxEvent(int theId, wxEventType commandType )
360 {
361 m_eventType = commandType;
362 m_eventObject = (wxObject *) NULL;
363 m_timeStamp = 0;
364 m_id = theId;
365 m_skipped = false;
366 m_callbackUserData = (wxObject *) NULL;
367 m_isCommandEvent = false;
368 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
369 }
370
371 wxEvent::wxEvent(const wxEvent& src)
372 : wxObject(src)
373 , m_eventObject(src.m_eventObject)
374 , m_eventType(src.m_eventType)
375 , m_timeStamp(src.m_timeStamp)
376 , m_id(src.m_id)
377 , m_callbackUserData(src.m_callbackUserData)
378 , m_propagationLevel(src.m_propagationLevel)
379 , m_skipped(src.m_skipped)
380 , m_isCommandEvent(src.m_isCommandEvent)
381 {
382 }
383
384 wxEvent& wxEvent::operator=(const wxEvent& src)
385 {
386 wxObject::operator=(src);
387
388 m_eventObject = src.m_eventObject;
389 m_eventType = src.m_eventType;
390 m_timeStamp = src.m_timeStamp;
391 m_id = src.m_id;
392 m_callbackUserData = src.m_callbackUserData;
393 m_propagationLevel = src.m_propagationLevel;
394 m_skipped = src.m_skipped;
395 m_isCommandEvent = src.m_isCommandEvent;
396
397 return *this;
398 }
399
400 #endif // wxUSE_BASE
401
402 #if wxUSE_GUI
403
404 /*
405 * Command events
406 *
407 */
408
409 #ifdef __VISUALC__
410 // 'this' : used in base member initializer list (for m_commandString)
411 #pragma warning(disable:4355)
412 #endif
413
414 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
415 : wxEvent(theId, commandType)
416 {
417 m_clientData = (char *) NULL;
418 m_clientObject = (wxClientData *) NULL;
419 m_extraLong = 0;
420 m_commandInt = 0;
421 m_isCommandEvent = true;
422
423 // the command events are propagated upwards by default
424 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
425 }
426
427 #ifdef __VISUALC__
428 #pragma warning(default:4355)
429 #endif
430
431 wxString wxCommandEvent::GetString() const
432 {
433 if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
434 {
435 return m_cmdString;
436 }
437 else
438 {
439 #if wxUSE_TEXTCTRL
440 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
441 if ( txt )
442 return txt->GetValue();
443 else
444 #endif // wxUSE_TEXTCTRL
445 return m_cmdString;
446 }
447 }
448
449 /*
450 * UI update events
451 */
452
453 #if wxUSE_LONGLONG
454 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
455 #endif
456
457 long wxUpdateUIEvent::sm_updateInterval = 0;
458
459 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
460
461 // Can we update?
462 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
463 {
464 // Don't update if we've switched global updating off
465 // and this window doesn't support updates.
466 if (win &&
467 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
468 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
469 return false;
470
471 if (sm_updateInterval == -1)
472 return false;
473
474 if (sm_updateInterval == 0)
475 return true;
476
477 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
478 wxLongLong now = wxGetLocalTimeMillis();
479 if (now > (sm_lastUpdate + sm_updateInterval))
480 {
481 return true;
482 }
483
484 return false;
485 #else
486 // If we don't have wxStopWatch or wxLongLong, we
487 // should err on the safe side and update now anyway.
488 return true;
489 #endif
490 }
491
492 // Reset the update time to provide a delay until the next
493 // time we should update
494 void wxUpdateUIEvent::ResetUpdateTime()
495 {
496 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
497 if (sm_updateInterval > 0)
498 {
499 wxLongLong now = wxGetLocalTimeMillis();
500 if (now > (sm_lastUpdate + sm_updateInterval))
501 {
502 sm_lastUpdate = now;
503 }
504 }
505 #endif
506 }
507
508 /*
509 * Scroll events
510 */
511
512 wxScrollEvent::wxScrollEvent(wxEventType commandType,
513 int id,
514 int pos,
515 int orient)
516 : wxCommandEvent(commandType, id)
517 {
518 m_extraLong = orient;
519 m_commandInt = pos;
520 }
521
522 /*
523 * ScrollWin events
524 */
525
526 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
527 int pos,
528 int orient)
529 {
530 m_eventType = commandType;
531 m_extraLong = orient;
532 m_commandInt = pos;
533 }
534
535 /*
536 * Mouse events
537 *
538 */
539
540 wxMouseEvent::wxMouseEvent(wxEventType commandType)
541 {
542 m_eventType = commandType;
543
544 m_x = 0;
545 m_y = 0;
546
547 m_leftDown = false;
548 m_middleDown = false;
549 m_rightDown = false;
550 m_aux1Down = false;
551 m_aux2Down = false;
552
553 m_clickCount = -1;
554
555 m_wheelRotation = 0;
556 m_wheelDelta = 0;
557 m_linesPerAction = 0;
558 m_wheelAxis = 0;
559 }
560
561 void wxMouseEvent::Assign(const wxMouseEvent& event)
562 {
563 wxEvent::operator=(event);
564 wxMouseState::operator=(event);
565
566 m_x = event.m_x;
567 m_y = event.m_y;
568
569 m_leftDown = event.m_leftDown;
570 m_middleDown = event.m_middleDown;
571 m_rightDown = event.m_rightDown;
572 m_aux1Down = event.m_aux1Down;
573 m_aux2Down = event.m_aux2Down;
574
575 m_wheelRotation = event.m_wheelRotation;
576 m_wheelDelta = event.m_wheelDelta;
577 m_linesPerAction = event.m_linesPerAction;
578 m_wheelAxis = event.m_wheelAxis;
579 }
580
581 // return true if was a button dclick event
582 bool wxMouseEvent::ButtonDClick(int but) const
583 {
584 switch (but)
585 {
586 default:
587 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
588 // fall through
589
590 case wxMOUSE_BTN_ANY:
591 return (LeftDClick() || MiddleDClick() || RightDClick() ||
592 Aux1DClick() || Aux2DClick());
593
594 case wxMOUSE_BTN_LEFT:
595 return LeftDClick();
596
597 case wxMOUSE_BTN_MIDDLE:
598 return MiddleDClick();
599
600 case wxMOUSE_BTN_RIGHT:
601 return RightDClick();
602
603 case wxMOUSE_BTN_AUX1:
604 return Aux1DClick();
605
606 case wxMOUSE_BTN_AUX2:
607 return Aux2DClick();
608 }
609 }
610
611 // return true if was a button down event
612 bool wxMouseEvent::ButtonDown(int but) const
613 {
614 switch (but)
615 {
616 default:
617 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
618 // fall through
619
620 case wxMOUSE_BTN_ANY:
621 return (LeftDown() || MiddleDown() || RightDown() ||
622 Aux1Down() || Aux2Down());
623
624 case wxMOUSE_BTN_LEFT:
625 return LeftDown();
626
627 case wxMOUSE_BTN_MIDDLE:
628 return MiddleDown();
629
630 case wxMOUSE_BTN_RIGHT:
631 return RightDown();
632
633 case wxMOUSE_BTN_AUX1:
634 return Aux1Down();
635
636 case wxMOUSE_BTN_AUX2:
637 return Aux2Down();
638 }
639 }
640
641 // return true if was a button up event
642 bool wxMouseEvent::ButtonUp(int but) const
643 {
644 switch (but)
645 {
646 default:
647 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
648 // fall through
649
650 case wxMOUSE_BTN_ANY:
651 return (LeftUp() || MiddleUp() || RightUp() ||
652 Aux1Up() || Aux2Up());
653
654 case wxMOUSE_BTN_LEFT:
655 return LeftUp();
656
657 case wxMOUSE_BTN_MIDDLE:
658 return MiddleUp();
659
660 case wxMOUSE_BTN_RIGHT:
661 return RightUp();
662
663 case wxMOUSE_BTN_AUX1:
664 return Aux1Up();
665
666 case wxMOUSE_BTN_AUX2:
667 return Aux2Up();
668 }
669 }
670
671 // return true if the given button is currently changing state
672 bool wxMouseEvent::Button(int but) const
673 {
674 switch (but)
675 {
676 default:
677 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
678 // fall through
679
680 case wxMOUSE_BTN_ANY:
681 return ButtonUp(wxMOUSE_BTN_ANY) ||
682 ButtonDown(wxMOUSE_BTN_ANY) ||
683 ButtonDClick(wxMOUSE_BTN_ANY);
684
685 case wxMOUSE_BTN_LEFT:
686 return LeftDown() || LeftUp() || LeftDClick();
687
688 case wxMOUSE_BTN_MIDDLE:
689 return MiddleDown() || MiddleUp() || MiddleDClick();
690
691 case wxMOUSE_BTN_RIGHT:
692 return RightDown() || RightUp() || RightDClick();
693
694 case wxMOUSE_BTN_AUX1:
695 return Aux1Down() || Aux1Up() || Aux1DClick();
696
697 case wxMOUSE_BTN_AUX2:
698 return Aux2Down() || Aux2Up() || Aux2DClick();
699 }
700 }
701
702 bool wxMouseEvent::ButtonIsDown(int but) const
703 {
704 switch (but)
705 {
706 default:
707 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
708 // fall through
709
710 case wxMOUSE_BTN_ANY:
711 return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down();
712
713 case wxMOUSE_BTN_LEFT:
714 return LeftIsDown();
715
716 case wxMOUSE_BTN_MIDDLE:
717 return MiddleIsDown();
718
719 case wxMOUSE_BTN_RIGHT:
720 return RightIsDown();
721
722 case wxMOUSE_BTN_AUX1:
723 return Aux1IsDown();
724
725 case wxMOUSE_BTN_AUX2:
726 return Aux2IsDown();
727 }
728 }
729
730 int wxMouseEvent::GetButton() const
731 {
732 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
733 {
734 if ( Button(i) )
735 {
736 return i;
737 }
738 }
739
740 return wxMOUSE_BTN_NONE;
741 }
742
743 // Find the logical position of the event given the DC
744 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
745 {
746 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
747 return pt;
748 }
749
750
751 /*
752 * Keyboard event
753 *
754 */
755
756 wxKeyEvent::wxKeyEvent(wxEventType type)
757 {
758 m_eventType = type;
759 m_keyCode = 0;
760 m_scanCode = 0;
761 #if wxUSE_UNICODE
762 m_uniChar = 0;
763 #endif
764 }
765
766 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
767 : wxEvent(evt),
768 wxKeyboardState(evt)
769 {
770 m_x = evt.m_x;
771 m_y = evt.m_y;
772
773 m_keyCode = evt.m_keyCode;
774
775 m_scanCode = evt.m_scanCode;
776 m_rawCode = evt.m_rawCode;
777 m_rawFlags = evt.m_rawFlags;
778
779 #if wxUSE_UNICODE
780 m_uniChar = evt.m_uniChar;
781 #endif
782 }
783
784 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
785 {
786 SetEventType(wxEVT_CREATE);
787 SetEventObject(win);
788 }
789
790 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
791 {
792 SetEventType(wxEVT_DESTROY);
793 SetEventObject(win);
794 }
795
796 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
797 : wxCommandEvent(wxEVT_CHILD_FOCUS)
798 {
799 SetEventObject(win);
800 }
801
802 // ----------------------------------------------------------------------------
803 // wxHelpEvent
804 // ----------------------------------------------------------------------------
805
806 /* static */
807 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
808 {
809 if ( origin == Origin_Unknown )
810 {
811 // assume that the event comes from the help button if it's not from
812 // keyboard and that pressing F1 always results in the help event
813 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
814 }
815
816 return origin;
817 }
818
819 #endif // wxUSE_GUI
820
821
822 #if wxUSE_BASE
823
824 // ----------------------------------------------------------------------------
825 // wxEventHashTable
826 // ----------------------------------------------------------------------------
827
828 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
829
830 wxEventHashTable* wxEventHashTable::sm_first = NULL;
831
832 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
833 : m_table(table),
834 m_rebuildHash(true)
835 {
836 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
837
838 m_next = sm_first;
839 if (m_next)
840 m_next->m_previous = this;
841 sm_first = this;
842 }
843
844 wxEventHashTable::~wxEventHashTable()
845 {
846 if (m_next)
847 m_next->m_previous = m_previous;
848 if (m_previous)
849 m_previous->m_next = m_next;
850 if (sm_first == this)
851 sm_first = m_next;
852
853 Clear();
854 }
855
856 void wxEventHashTable::Clear()
857 {
858 for ( size_t i = 0; i < m_size; i++ )
859 {
860 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
861 delete eTTnode;
862 }
863
864 delete[] m_eventTypeTable;
865 m_eventTypeTable = NULL;
866
867 m_size = 0;
868 }
869
870 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
871
872 // Clear all tables
873 void wxEventHashTable::ClearAll()
874 {
875 wxEventHashTable* table = sm_first;
876 while (table)
877 {
878 table->Clear();
879 table = table->m_next;
880 }
881 }
882
883 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
884
885 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
886 {
887 if (m_rebuildHash)
888 {
889 InitHashTable();
890 m_rebuildHash = false;
891 }
892
893 if (!m_eventTypeTable)
894 return false;
895
896 // Find all entries for the given event type.
897 wxEventType eventType = event.GetEventType();
898 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
899 if (eTTnode && eTTnode->eventType == eventType)
900 {
901 // Now start the search for an event handler
902 // that can handle an event with the given ID.
903 const wxEventTableEntryPointerArray&
904 eventEntryTable = eTTnode->eventEntryTable;
905
906 const size_t count = eventEntryTable.GetCount();
907 for (size_t n = 0; n < count; n++)
908 {
909 if ( wxEvtHandler::
910 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
911 {
912 return true;
913 }
914 }
915 }
916
917 return false;
918 }
919
920 void wxEventHashTable::InitHashTable()
921 {
922 // Loop over the event tables and all its base tables.
923 const wxEventTable *table = &m_table;
924 while (table)
925 {
926 // Retrieve all valid event handler entries
927 const wxEventTableEntry *entry = table->entries;
928 while (entry->m_fn != 0)
929 {
930 // Add the event entry in the Hash.
931 AddEntry(*entry);
932
933 entry++;
934 }
935
936 table = table->baseTable;
937 }
938
939 // Lets free some memory.
940 size_t i;
941 for(i = 0; i < m_size; i++)
942 {
943 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
944 if (eTTnode)
945 {
946 eTTnode->eventEntryTable.Shrink();
947 }
948 }
949 }
950
951 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
952 {
953 // This might happen 'accidentally' as the app is exiting
954 if (!m_eventTypeTable)
955 return;
956
957 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
958 EventTypeTablePointer eTTnode = *peTTnode;
959
960 if (eTTnode)
961 {
962 if (eTTnode->eventType != entry.m_eventType)
963 {
964 // Resize the table!
965 GrowEventTypeTable();
966 // Try again to add it.
967 AddEntry(entry);
968 return;
969 }
970 }
971 else
972 {
973 eTTnode = new EventTypeTable;
974 eTTnode->eventType = entry.m_eventType;
975 *peTTnode = eTTnode;
976 }
977
978 // Fill all hash entries between entry.m_id and entry.m_lastId...
979 eTTnode->eventEntryTable.Add(&entry);
980 }
981
982 void wxEventHashTable::AllocEventTypeTable(size_t size)
983 {
984 m_eventTypeTable = new EventTypeTablePointer[size];
985 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
986 m_size = size;
987 }
988
989 void wxEventHashTable::GrowEventTypeTable()
990 {
991 size_t oldSize = m_size;
992 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
993
994 // TODO: Search the most optimal grow sequence
995 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
996
997 for ( size_t i = 0; i < oldSize; /* */ )
998 {
999 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
1000 if (eTToldNode)
1001 {
1002 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1003 EventTypeTablePointer eTTnode = *peTTnode;
1004
1005 // Check for collision, we don't want any.
1006 if (eTTnode)
1007 {
1008 GrowEventTypeTable();
1009 continue; // Don't increment the counter,
1010 // as we still need to add this element.
1011 }
1012 else
1013 {
1014 // Get the old value and put it in the new table.
1015 *peTTnode = oldEventTypeTable[i];
1016 }
1017 }
1018
1019 i++;
1020 }
1021
1022 delete[] oldEventTypeTable;
1023 }
1024
1025 // ----------------------------------------------------------------------------
1026 // wxEvtHandler
1027 // ----------------------------------------------------------------------------
1028
1029 /*
1030 * Event handler
1031 */
1032
1033 wxEvtHandler::wxEvtHandler()
1034 {
1035 m_nextHandler = (wxEvtHandler *) NULL;
1036 m_previousHandler = (wxEvtHandler *) NULL;
1037 m_enabled = true;
1038 m_dynamicEvents = (wxList *) NULL;
1039 m_pendingEvents = (wxList *) NULL;
1040
1041 // no client data (yet)
1042 m_clientData = NULL;
1043 m_clientDataType = wxClientData_None;
1044 }
1045
1046 wxEvtHandler::~wxEvtHandler()
1047 {
1048 // Takes itself out of the list of handlers
1049 if (m_previousHandler)
1050 m_previousHandler->m_nextHandler = m_nextHandler;
1051
1052 if (m_nextHandler)
1053 m_nextHandler->m_previousHandler = m_previousHandler;
1054
1055 if (m_dynamicEvents)
1056 {
1057 for ( wxList::iterator it = m_dynamicEvents->begin(),
1058 end = m_dynamicEvents->end();
1059 it != end;
1060 ++it )
1061 {
1062 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1063
1064 // Remove ourselves from sink destructor notifications
1065 // (this has usually been been done, in wxTrackable destructor)
1066 wxEvtHandler *eventSink = entry->m_eventSink;
1067 if ( eventSink )
1068 {
1069 wxEventConnectionRef * const
1070 evtConnRef = FindRefInTrackerList(eventSink);
1071 if ( evtConnRef )
1072 {
1073 eventSink->RemoveNode(evtConnRef);
1074 delete evtConnRef;
1075 }
1076 }
1077
1078 if (entry->m_callbackUserData)
1079 delete entry->m_callbackUserData;
1080 delete entry;
1081 }
1082 delete m_dynamicEvents;
1083 };
1084
1085 if (m_pendingEvents)
1086 m_pendingEvents->DeleteContents(true);
1087 delete m_pendingEvents;
1088
1089 // Remove us from wxPendingEvents if necessary.
1090 if ( wxPendingEvents )
1091 {
1092 #if wxUSE_THREADS
1093 if (wxPendingEventsLocker)
1094 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1095 #endif
1096
1097 if ( wxPendingEvents->DeleteObject(this) )
1098 {
1099 // check that we were present only once in the list
1100 wxASSERT_MSG( !wxPendingEvents->Find(this),
1101 "Handler occurs twice in wxPendingEvents list" );
1102 }
1103 //else: we weren't in this list at all, it's ok
1104
1105 #if wxUSE_THREADS
1106 if (wxPendingEventsLocker)
1107 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1108 #endif
1109 }
1110
1111 // we only delete object data, not untyped
1112 if ( m_clientDataType == wxClientData_Object )
1113 delete m_clientObject;
1114 }
1115
1116 #if wxUSE_THREADS
1117
1118 bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1119 {
1120 // check that we are really in a child thread
1121 wxASSERT_MSG( !wxThread::IsMain(),
1122 wxT("use ProcessEvent() in main thread") );
1123
1124 AddPendingEvent(event);
1125
1126 return true;
1127 }
1128
1129 #endif // wxUSE_THREADS
1130
1131 void wxEvtHandler::QueueEvent(wxEvent *event)
1132 {
1133 wxCHECK_RET( event, "NULL event can't be posted" );
1134
1135 // 1) Add this event to our list of pending events
1136 wxENTER_CRIT_SECT( m_pendingEventsLock );
1137
1138 if ( !m_pendingEvents )
1139 m_pendingEvents = new wxList;
1140
1141 m_pendingEvents->Append(event);
1142
1143 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1144
1145 // 2) Add this event handler to list of event handlers that
1146 // have pending events.
1147
1148 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1149
1150 if ( !wxPendingEvents )
1151 wxPendingEvents = new wxList;
1152 if ( !wxPendingEvents->Find(this) )
1153 wxPendingEvents->Append(this);
1154
1155 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1156
1157 // 3) Inform the system that new pending events are somewhere,
1158 // and that these should be processed in idle time.
1159 wxWakeUpIdle();
1160 }
1161
1162 void wxEvtHandler::ProcessPendingEvents()
1163 {
1164 wxENTER_CRIT_SECT( m_pendingEventsLock );
1165
1166 // this method is only called by wxApp if this handler does have
1167 // pending events
1168 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1169 "should have pending events if called" );
1170
1171 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1172 wxEventPtr event(wx_static_cast(wxEvent *, node->GetData()));
1173
1174 // it's important we remove event from list before processing it, else a
1175 // nested event loop, for example from a modal dialog, might process the
1176 // same event again.
1177 m_pendingEvents->Erase(node);
1178
1179 // if there are no more pending events left, we don't need to stay in this
1180 // list
1181 if ( m_pendingEvents->IsEmpty() )
1182 {
1183 #if wxUSE_THREADS
1184 if (wxPendingEventsLocker)
1185 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1186 #endif
1187 wxPendingEvents->DeleteObject(this);
1188 #if wxUSE_THREADS
1189 if (wxPendingEventsLocker)
1190 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1191 #endif
1192 }
1193
1194 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1195
1196 ProcessEvent(*event);
1197
1198 // careful: this object could have been deleted by the event handler
1199 // executed by the above ProcessEvent() call, so we can't access any fields
1200 // of this object any more
1201 }
1202
1203 /*
1204 * Event table stuff
1205 */
1206 /* static */ bool
1207 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1208 wxEvtHandler *handler,
1209 wxEvent& event)
1210 {
1211 int tableId1 = entry.m_id,
1212 tableId2 = entry.m_lastId;
1213
1214 // match only if the event type is the same and the id is either -1 in
1215 // the event table (meaning "any") or the event id matches the id
1216 // specified in the event table either exactly or by falling into
1217 // range between first and last
1218 if ((tableId1 == wxID_ANY) ||
1219 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1220 (tableId2 != wxID_ANY &&
1221 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1222 {
1223 event.Skip(false);
1224 event.m_callbackUserData = entry.m_callbackUserData;
1225
1226 #if wxUSE_EXCEPTIONS
1227 if ( wxTheApp )
1228 {
1229 // call the handler via wxApp method which allows the user to catch
1230 // any exceptions which may be thrown by any handler in the program
1231 // in one place
1232 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1233 }
1234 else
1235 #endif // wxUSE_EXCEPTIONS
1236 {
1237 // no need for an extra virtual function call
1238 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1239 }
1240
1241 if (!event.GetSkipped())
1242 return true;
1243 }
1244
1245 return false;
1246 }
1247
1248 bool wxEvtHandler::TryParent(wxEvent& event)
1249 {
1250 if ( GetNextHandler() )
1251 {
1252 // the next handler will pass it to wxTheApp if it doesn't process it,
1253 // so return from here to avoid doing it again
1254 return GetNextHandler()->TryParent(event);
1255 }
1256
1257 if ( wxTheApp && (this != wxTheApp) )
1258 {
1259 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1260 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1261 // processed appropriately via SearchEventTable.
1262 if ( event.GetEventType() != wxEVT_IDLE )
1263 {
1264 if ( wxTheApp->ProcessEvent(event) )
1265 return true;
1266 }
1267 }
1268
1269 return false;
1270 }
1271
1272 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1273 {
1274 // allow the application to hook into event processing
1275 if ( wxTheApp )
1276 {
1277 int rc = wxTheApp->FilterEvent(event);
1278 if ( rc != -1 )
1279 {
1280 wxASSERT_MSG( rc == 1 || rc == 0,
1281 _T("unexpected wxApp::FilterEvent return value") );
1282
1283 return rc != 0;
1284 }
1285 //else: proceed normally
1286 }
1287
1288 if ( ProcessEventHere(event) )
1289 return true;
1290
1291 // propagate the event upwards the window chain and/or to the application
1292 // object if it wasn't processed at this level
1293 return TryParent(event);
1294 }
1295
1296 bool wxEvtHandler::ProcessEventHere(wxEvent& event)
1297 {
1298 // An event handler can be enabled or disabled
1299 if ( GetEvtHandlerEnabled() )
1300 {
1301 // if we have a validator, it has higher priority than our own event
1302 // table
1303 if ( TryValidator(event) )
1304 return true;
1305
1306 // Handle per-instance dynamic event tables first
1307 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1308 return true;
1309
1310 // Then static per-class event tables
1311 if ( GetEventHashTable().HandleEvent(event, this) )
1312 return true;
1313 }
1314
1315 // Try going down the event handler chain
1316 if ( GetNextHandler() && GetNextHandler()->ProcessEventHere(event) )
1317 return true;
1318
1319 // We don't have a handler for this event.
1320 return false;
1321 }
1322
1323 bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1324 {
1325 #if wxUSE_EXCEPTIONS
1326 try
1327 {
1328 #endif
1329 return ProcessEvent(event);
1330 #if wxUSE_EXCEPTIONS
1331 }
1332 catch ( ... )
1333 {
1334 wxEventLoopBase *loop = wxEventLoopBase::GetActive();
1335 try
1336 {
1337 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1338 {
1339 if ( loop )
1340 loop->Exit();
1341 }
1342 //else: continue running current event loop
1343
1344 return false;
1345 }
1346 catch ( ... )
1347 {
1348 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1349 // exception again: very good, but we still need Exit() to
1350 // be called
1351 if ( loop )
1352 loop->Exit();
1353 throw;
1354 }
1355 }
1356 #endif // wxUSE_EXCEPTIONS
1357 }
1358
1359
1360 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1361 {
1362 const wxEventType eventType = event.GetEventType();
1363 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1364 {
1365 const wxEventTableEntry& entry = table.entries[i];
1366 if ( eventType == entry.m_eventType )
1367 {
1368 if ( ProcessEventIfMatches(entry, this, event) )
1369 return true;
1370 }
1371 }
1372
1373 return false;
1374 }
1375
1376 void wxEvtHandler::Connect( int id, int lastId,
1377 int eventType,
1378 wxObjectEventFunction func,
1379 wxObject *userData,
1380 wxEvtHandler* eventSink )
1381 {
1382 wxDynamicEventTableEntry *entry =
1383 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1384
1385 if (!m_dynamicEvents)
1386 m_dynamicEvents = new wxList;
1387
1388 // Insert at the front of the list so most recent additions are found first
1389 m_dynamicEvents->Insert( (wxObject*) entry );
1390
1391 // Make sure we get to know when a sink is destroyed
1392 if ( eventSink && eventSink != this )
1393 {
1394 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1395 if ( evtConnRef )
1396 evtConnRef->IncRef( );
1397 else
1398 evtConnRef = new wxEventConnectionRef(this, eventSink);
1399 }
1400 }
1401
1402 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1403 wxObjectEventFunction func,
1404 wxObject *userData,
1405 wxEvtHandler* eventSink )
1406 {
1407 if (!m_dynamicEvents)
1408 return false;
1409
1410 // Remove connection from tracker node (wxEventConnectionRef)
1411 if ( eventSink && eventSink != this )
1412 {
1413 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1414 if ( evtConnRef )
1415 evtConnRef->DecRef();
1416 }
1417
1418 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1419 while (node)
1420 {
1421 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1422
1423 if ((entry->m_id == id) &&
1424 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1425 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1426 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1427 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1428 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1429 {
1430 if (entry->m_callbackUserData)
1431 delete entry->m_callbackUserData;
1432 m_dynamicEvents->Erase( node );
1433 delete entry;
1434 return true;
1435 }
1436 node = node->GetNext();
1437 }
1438 return false;
1439 }
1440
1441 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1442 {
1443 wxCHECK_MSG( m_dynamicEvents, false,
1444 wxT("caller should check that we have dynamic events") );
1445
1446 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1447 while (node)
1448 {
1449 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1450
1451 // get next node before (maybe) calling the event handler as it could
1452 // call Disconnect() invalidating the current node
1453 node = node->GetNext();
1454
1455 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1456 {
1457 wxEvtHandler *handler = entry->m_eventSink ? entry->m_eventSink
1458 : this;
1459 if ( ProcessEventIfMatches(*entry, handler, event) )
1460 return true;
1461 }
1462 }
1463
1464 return false;
1465 }
1466
1467 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1468 {
1469 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1470 wxT("can't have both object and void client data") );
1471
1472 if ( m_clientObject )
1473 delete m_clientObject;
1474
1475 m_clientObject = data;
1476 m_clientDataType = wxClientData_Object;
1477 }
1478
1479 wxClientData *wxEvtHandler::DoGetClientObject() const
1480 {
1481 // it's not an error to call GetClientObject() on a window which doesn't
1482 // have client data at all - NULL will be returned
1483 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1484 wxT("this window doesn't have object client data") );
1485
1486 return m_clientObject;
1487 }
1488
1489 void wxEvtHandler::DoSetClientData( void *data )
1490 {
1491 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1492 wxT("can't have both object and void client data") );
1493
1494 m_clientData = data;
1495 m_clientDataType = wxClientData_Void;
1496 }
1497
1498 void *wxEvtHandler::DoGetClientData() const
1499 {
1500 // it's not an error to call GetClientData() on a window which doesn't have
1501 // client data at all - NULL will be returned
1502 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1503 wxT("this window doesn't have void client data") );
1504
1505 return m_clientData;
1506 }
1507
1508 // A helper to find an wxEventConnectionRef object
1509 wxEventConnectionRef *
1510 wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1511 {
1512 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1513 {
1514 // we only want wxEventConnectionRef nodes here
1515 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1516 if ( evtConnRef && evtConnRef->m_src == this )
1517 {
1518 wxASSERT( evtConnRef->m_sink==eventSink );
1519 return evtConnRef;
1520 }
1521 }
1522
1523 return NULL;
1524 }
1525
1526 void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1527 {
1528 wxASSERT(m_dynamicEvents);
1529
1530 // remove all connections with this sink
1531 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1532 while (node)
1533 {
1534 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1535 node_nxt = node->GetNext();
1536
1537 if ( entry->m_eventSink==sink )
1538 {
1539 if (entry->m_callbackUserData)
1540 delete entry->m_callbackUserData;
1541 m_dynamicEvents->Erase( node );
1542 delete entry;
1543 }
1544 node = node_nxt;
1545 }
1546 }
1547
1548 #endif // wxUSE_BASE
1549
1550 #if wxUSE_GUI
1551
1552 // Find a window with the focus, that is also a descendant of the given window.
1553 // This is used to determine the window to initially send commands to.
1554 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1555 {
1556 // Process events starting with the window with the focus, if any.
1557 wxWindow* focusWin = wxWindow::FindFocus();
1558 wxWindow* win = focusWin;
1559
1560 // Check if this is a descendant of this frame.
1561 // If not, win will be set to NULL.
1562 while (win)
1563 {
1564 if (win == ancestor)
1565 break;
1566 else
1567 win = win->GetParent();
1568 }
1569 if (win == (wxWindow*) NULL)
1570 focusWin = (wxWindow*) NULL;
1571
1572 return focusWin;
1573 }
1574
1575 // ----------------------------------------------------------------------------
1576 // wxEventBlocker
1577 // ----------------------------------------------------------------------------
1578
1579 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1580 {
1581 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1582
1583 m_window = win;
1584
1585 Block(type);
1586 m_window->PushEventHandler(this);
1587 }
1588
1589 wxEventBlocker::~wxEventBlocker()
1590 {
1591 wxEvtHandler *popped = m_window->PopEventHandler(false);
1592 wxCHECK_RET(popped == this,
1593 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1594 }
1595
1596 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1597 {
1598 // should this event be blocked?
1599 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1600 {
1601 wxEventType t = (wxEventType)m_eventsToBlock[i];
1602 if ( t == wxEVT_ANY || t == event.GetEventType() )
1603 return true; // yes, it should: mark this event as processed
1604 }
1605
1606 return false;
1607 }
1608
1609 #endif // wxUSE_GUI
wxWidgets (Impactor)