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[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
29 #ifndef WX_PRECOMP
30 #include "wx/list.h"
31 #include "wx/app.h"
32 #include "wx/utils.h"
33 #include "wx/stopwatch.h"
34 #include "wx/module.h"
35
36 #if wxUSE_GUI
37 #include "wx/control.h"
38 #include "wx/dc.h"
39 #include "wx/textctrl.h"
40 #include "wx/validate.h"
41 #endif // wxUSE_GUI
42 #endif
43
44 // ----------------------------------------------------------------------------
45 // wxWin macros
46 // ----------------------------------------------------------------------------
47
48 #if wxUSE_BASE
49 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
50 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
51 #endif // wxUSE_BASE
52
53 #if wxUSE_GUI
54 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
55 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
56 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
57 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
58 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
59 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
60 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
61 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
62 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
63 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
64 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
65 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
66 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
67 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
68 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
91 #endif // wxUSE_GUI
92
93 #if wxUSE_BASE
94
95 const wxEventTable *wxEvtHandler::GetEventTable() const
96 { return &wxEvtHandler::sm_eventTable; }
97
98 const wxEventTable wxEvtHandler::sm_eventTable =
99 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
100
101 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
102 { return wxEvtHandler::sm_eventHashTable; }
103
104 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
105
106 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
107 { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
108
109
110 #ifdef __WXDEBUG__
111 // Clear up event hash table contents or we can get problems
112 // when C++ is cleaning up the static object
113 class wxEventTableEntryModule: public wxModule
114 {
115 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
116 public:
117 wxEventTableEntryModule() {}
118 bool OnInit() { return true; }
119 void OnExit()
120 {
121 wxEventHashTable::ClearAll();
122 }
123 };
124 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
125 #endif
126
127 // ----------------------------------------------------------------------------
128 // global variables
129 // ----------------------------------------------------------------------------
130
131 // To put pending event handlers
132 wxList *wxPendingEvents = (wxList *)NULL;
133
134 #if wxUSE_THREADS
135 // protects wxPendingEvents list
136 wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
137 #endif
138
139 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
140
141 // common event types are defined here, other event types are defined by the
142 // components which use them
143
144 const wxEventType wxEVT_FIRST = 10000;
145 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
146
147 DEFINE_EVENT_TYPE(wxEVT_NULL)
148 DEFINE_EVENT_TYPE(wxEVT_IDLE)
149 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
150
151 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
152
153 #endif // wxUSE_BASE
154
155 #if wxUSE_GUI
156
157 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
158
159 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
160 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
161 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
162 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
163 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
164 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
165 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
166 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
167 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
168 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
169 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
175
176 // Sockets and timers send events, too
177 DEFINE_EVENT_TYPE(wxEVT_TIMER)
178
179 // Mouse event types
180 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
181 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
182 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
183 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
184 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
185 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
186 DEFINE_EVENT_TYPE(wxEVT_MOTION)
187 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
188 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
189 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
190 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
191 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
192 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
193 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
194 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
195 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
196
197 // Non-client mouse events
198 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
199 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
200 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
201 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
202 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
203 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
204 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
205 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
206 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
207 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
208 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
209 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
210
211 // Character input event type
212 DEFINE_EVENT_TYPE(wxEVT_CHAR)
213 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
214 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
215 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
216 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
217 #if wxUSE_HOTKEY
218 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
219 #endif
220
221 // Set cursor event
222 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
223
224 // wxScrollbar and wxSlider event identifiers
225 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
226 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
227 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
228 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
229 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
230 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
231 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
232 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
233 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
234
235 // Scroll events from wxWindow
236 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
237 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
238 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
239 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
240 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
241 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
242 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
243 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
244
245 // System events
246 DEFINE_EVENT_TYPE(wxEVT_SIZE)
247 DEFINE_EVENT_TYPE(wxEVT_SIZING)
248 DEFINE_EVENT_TYPE(wxEVT_MOVE)
249 DEFINE_EVENT_TYPE(wxEVT_MOVING)
250 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
251 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
252 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
253 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
254 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
255 DEFINE_EVENT_TYPE(wxEVT_POWER)
256 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
257 DEFINE_EVENT_TYPE(wxEVT_CREATE)
258 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
259 DEFINE_EVENT_TYPE(wxEVT_SHOW)
260 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
261 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
262 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
263 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
264 DEFINE_EVENT_TYPE(wxEVT_PAINT)
265 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
266 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
267 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
268 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
269 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
270 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
271 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
272 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
273 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
274 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
275 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
276 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
277 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
278 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
279 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
280 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
281 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
282 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
283 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
284 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
285 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
286 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
287
288 // Clipboard events
289 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
290 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
291 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
292
293 // Generic command events
294 // Note: a click is a higher-level event than button down/up
295 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
296 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
297 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
298 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
299 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
300 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
301 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
302
303 // Help events
304 DEFINE_EVENT_TYPE(wxEVT_HELP)
305 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
306
307 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
308
309 #endif // wxUSE_GUI
310
311 #if wxUSE_BASE
312
313 // ============================================================================
314 // implementation
315 // ============================================================================
316
317 // ----------------------------------------------------------------------------
318 // event initialization
319 // ----------------------------------------------------------------------------
320
321 int wxNewEventType()
322 {
323 // MT-FIXME
324 static int s_lastUsedEventType = wxEVT_FIRST;
325
326 return s_lastUsedEventType++;
327 }
328
329 // ----------------------------------------------------------------------------
330 // wxEvent
331 // ----------------------------------------------------------------------------
332
333 /*
334 * General wxWidgets events, covering
335 * all interesting things that might happen (button clicking, resizing,
336 * setting text in widgets, etc.).
337 *
338 * For each completely new event type, derive a new event class.
339 *
340 */
341
342 wxEvent::wxEvent(int theId, wxEventType commandType )
343 {
344 m_eventType = commandType;
345 m_eventObject = (wxObject *) NULL;
346 m_timeStamp = 0;
347 m_id = theId;
348 m_skipped = false;
349 m_callbackUserData = (wxObject *) NULL;
350 m_isCommandEvent = false;
351 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
352 }
353
354 wxEvent::wxEvent(const wxEvent &src)
355 : wxObject()
356 , m_eventObject(src.m_eventObject)
357 , m_eventType(src.m_eventType)
358 , m_timeStamp(src.m_timeStamp)
359 , m_id(src.m_id)
360 , m_callbackUserData(src.m_callbackUserData)
361 , m_propagationLevel(src.m_propagationLevel)
362 , m_skipped(src.m_skipped)
363 , m_isCommandEvent(src.m_isCommandEvent)
364 {
365 }
366
367 #endif // wxUSE_BASE
368
369 #if wxUSE_GUI
370
371 /*
372 * Command events
373 *
374 */
375
376 #ifdef __VISUALC__
377 // 'this' : used in base member initializer list (for m_commandString)
378 #pragma warning(disable:4355)
379 #endif
380
381 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
382 : wxEvent(theId, commandType)
383 #if WXWIN_COMPATIBILITY_2_4
384 , m_commandString(this)
385 #endif
386 {
387 m_clientData = (char *) NULL;
388 m_clientObject = (wxClientData *) NULL;
389 m_extraLong = 0;
390 m_commandInt = 0;
391 m_isCommandEvent = true;
392
393 // the command events are propagated upwards by default
394 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
395 }
396
397 #ifdef __VISUALC__
398 #pragma warning(default:4355)
399 #endif
400
401 wxString wxCommandEvent::GetString() const
402 {
403 if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
404 return m_cmdString;
405 else
406 {
407 #if wxUSE_TEXTCTRL
408 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
409 if(txt)
410 return txt->GetValue();
411 else
412 #endif // wxUSE_TEXTCTRL
413 return m_cmdString;
414 }
415 }
416
417 /*
418 * UI update events
419 */
420
421 #if wxUSE_LONGLONG
422 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
423 #endif
424
425 long wxUpdateUIEvent::sm_updateInterval = 0;
426
427 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
428
429 // Can we update?
430 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
431 {
432 // Don't update if we've switched global updating off
433 // and this window doesn't support updates.
434 if (win &&
435 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
436 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
437 return false;
438
439 if (sm_updateInterval == -1)
440 return false;
441
442 if (sm_updateInterval == 0)
443 return true;
444
445 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
446 wxLongLong now = wxGetLocalTimeMillis();
447 if (now > (sm_lastUpdate + sm_updateInterval))
448 {
449 return true;
450 }
451
452 return false;
453 #else
454 // If we don't have wxStopWatch or wxLongLong, we
455 // should err on the safe side and update now anyway.
456 return true;
457 #endif
458 }
459
460 // Reset the update time to provide a delay until the next
461 // time we should update
462 void wxUpdateUIEvent::ResetUpdateTime()
463 {
464 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
465 if (sm_updateInterval > 0)
466 {
467 wxLongLong now = wxGetLocalTimeMillis();
468 if (now > (sm_lastUpdate + sm_updateInterval))
469 {
470 sm_lastUpdate = now;
471 }
472 }
473 #endif
474 }
475
476 /*
477 * Idle events
478 */
479
480 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
481
482 // Can we send an idle event?
483 bool wxIdleEvent::CanSend(wxWindow* win)
484 {
485 // Don't update if we've switched global updating off
486 // and this window doesn't support updates.
487 if (win &&
488 (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
489 ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
490 return false;
491
492 return true;
493 }
494
495 /*
496 * Scroll events
497 */
498
499 wxScrollEvent::wxScrollEvent(wxEventType commandType,
500 int id,
501 int pos,
502 int orient)
503 : wxCommandEvent(commandType, id)
504 {
505 m_extraLong = orient;
506 m_commandInt = pos;
507 }
508
509 /*
510 * ScrollWin events
511 */
512
513 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
514 int pos,
515 int orient)
516 {
517 m_eventType = commandType;
518 m_extraLong = orient;
519 m_commandInt = pos;
520 }
521
522 /*
523 * Mouse events
524 *
525 */
526
527 wxMouseEvent::wxMouseEvent(wxEventType commandType)
528 {
529 m_eventType = commandType;
530 m_metaDown = false;
531 m_altDown = false;
532 m_controlDown = false;
533 m_shiftDown = false;
534 m_leftDown = false;
535 m_rightDown = false;
536 m_middleDown = false;
537 m_x = 0;
538 m_y = 0;
539 m_wheelRotation = 0;
540 m_wheelDelta = 0;
541 m_linesPerAction = 0;
542 }
543
544 void wxMouseEvent::Assign(const wxMouseEvent& event)
545 {
546 m_eventType = event.m_eventType;
547
548 m_x = event.m_x;
549 m_y = event.m_y;
550
551 m_leftDown = event.m_leftDown;
552 m_middleDown = event.m_middleDown;
553 m_rightDown = event.m_rightDown;
554
555 m_controlDown = event.m_controlDown;
556 m_shiftDown = event.m_shiftDown;
557 m_altDown = event.m_altDown;
558 m_metaDown = event.m_metaDown;
559
560 m_wheelRotation = event.m_wheelRotation;
561 m_wheelDelta = event.m_wheelDelta;
562 m_linesPerAction = event.m_linesPerAction;
563 }
564
565 // return true if was a button dclick event
566 bool wxMouseEvent::ButtonDClick(int but) const
567 {
568 switch (but)
569 {
570 default:
571 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
572 // fall through
573
574 case wxMOUSE_BTN_ANY:
575 return (LeftDClick() || MiddleDClick() || RightDClick());
576
577 case wxMOUSE_BTN_LEFT:
578 return LeftDClick();
579
580 case wxMOUSE_BTN_MIDDLE:
581 return MiddleDClick();
582
583 case wxMOUSE_BTN_RIGHT:
584 return RightDClick();
585 }
586 }
587
588 // return true if was a button down event
589 bool wxMouseEvent::ButtonDown(int but) const
590 {
591 switch (but)
592 {
593 default:
594 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
595 // fall through
596
597 case wxMOUSE_BTN_ANY:
598 return (LeftDown() || MiddleDown() || RightDown());
599
600 case wxMOUSE_BTN_LEFT:
601 return LeftDown();
602
603 case wxMOUSE_BTN_MIDDLE:
604 return MiddleDown();
605
606 case wxMOUSE_BTN_RIGHT:
607 return RightDown();
608 }
609 }
610
611 // return true if was a button up event
612 bool wxMouseEvent::ButtonUp(int but) const
613 {
614 switch (but)
615 {
616 default:
617 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
618 // fall through
619
620 case wxMOUSE_BTN_ANY:
621 return (LeftUp() || MiddleUp() || RightUp());
622
623 case wxMOUSE_BTN_LEFT:
624 return LeftUp();
625
626 case wxMOUSE_BTN_MIDDLE:
627 return MiddleUp();
628
629 case wxMOUSE_BTN_RIGHT:
630 return RightUp();
631 }
632 }
633
634 // return true if the given button is currently changing state
635 bool wxMouseEvent::Button(int but) const
636 {
637 switch (but)
638 {
639 default:
640 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
641 // fall through
642
643 case wxMOUSE_BTN_ANY:
644 return ButtonUp(wxMOUSE_BTN_ANY) ||
645 ButtonDown(wxMOUSE_BTN_ANY) ||
646 ButtonDClick(wxMOUSE_BTN_ANY);
647
648 case wxMOUSE_BTN_LEFT:
649 return LeftDown() || LeftUp() || LeftDClick();
650
651 case wxMOUSE_BTN_MIDDLE:
652 return MiddleDown() || MiddleUp() || MiddleDClick();
653
654 case wxMOUSE_BTN_RIGHT:
655 return RightDown() || RightUp() || RightDClick();
656 }
657 }
658
659 bool wxMouseEvent::ButtonIsDown(int but) const
660 {
661 switch (but)
662 {
663 default:
664 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
665 // fall through
666
667 case wxMOUSE_BTN_ANY:
668 return LeftIsDown() || MiddleIsDown() || RightIsDown();
669
670 case wxMOUSE_BTN_LEFT:
671 return LeftIsDown();
672
673 case wxMOUSE_BTN_MIDDLE:
674 return MiddleIsDown();
675
676 case wxMOUSE_BTN_RIGHT:
677 return RightIsDown();
678 }
679 }
680
681 int wxMouseEvent::GetButton() const
682 {
683 for ( int i = 1; i <= 3; i++ )
684 {
685 if ( Button(i) )
686 {
687 return i;
688 }
689 }
690
691 return wxMOUSE_BTN_NONE;
692 }
693
694 // Find the logical position of the event given the DC
695 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
696 {
697 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
698 return pt;
699 }
700
701
702 /*
703 * Keyboard event
704 *
705 */
706
707 wxKeyEvent::wxKeyEvent(wxEventType type)
708 {
709 m_eventType = type;
710 m_shiftDown = false;
711 m_controlDown = false;
712 m_metaDown = false;
713 m_altDown = false;
714 m_keyCode = 0;
715 m_scanCode = 0;
716 #if wxUSE_UNICODE
717 m_uniChar = 0;
718 #endif
719 }
720
721 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
722 : wxEvent(evt)
723 {
724 m_x = evt.m_x;
725 m_y = evt.m_y;
726
727 m_keyCode = evt.m_keyCode;
728
729 m_controlDown = evt.m_controlDown;
730 m_shiftDown = evt.m_shiftDown;
731 m_altDown = evt.m_altDown;
732 m_metaDown = evt.m_metaDown;
733 m_scanCode = evt.m_scanCode;
734 m_rawCode = evt.m_rawCode;
735 m_rawFlags = evt.m_rawFlags;
736
737 #if wxUSE_UNICODE
738 m_uniChar = evt.m_uniChar;
739 #endif
740 }
741
742 #if WXWIN_COMPATIBILITY_2_6
743 long wxKeyEvent::KeyCode() const
744 {
745 return m_keyCode;
746 }
747 #endif // WXWIN_COMPATIBILITY_2_6
748
749 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
750 {
751 SetEventType(wxEVT_CREATE);
752 SetEventObject(win);
753 }
754
755 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
756 {
757 SetEventType(wxEVT_DESTROY);
758 SetEventObject(win);
759 }
760
761 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
762 : wxCommandEvent(wxEVT_CHILD_FOCUS)
763 {
764 SetEventObject(win);
765 }
766
767 // ----------------------------------------------------------------------------
768 // wxHelpEvent
769 // ----------------------------------------------------------------------------
770
771 /* static */
772 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
773 {
774 if ( origin == Origin_Unknown )
775 {
776 // assume that the event comes from the help button if it's not from
777 // keyboard and that pressing F1 always results in the help event
778 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
779 }
780
781 return origin;
782 }
783
784 #endif // wxUSE_GUI
785
786
787 #if wxUSE_BASE
788
789 // ----------------------------------------------------------------------------
790 // wxEventHashTable
791 // ----------------------------------------------------------------------------
792
793 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
794
795 wxEventHashTable* wxEventHashTable::sm_first = NULL;
796
797 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
798 : m_table(table),
799 m_rebuildHash(true)
800 {
801 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
802
803 m_next = sm_first;
804 if (m_next)
805 m_next->m_previous = this;
806 sm_first = this;
807 }
808
809 wxEventHashTable::~wxEventHashTable()
810 {
811 if (m_next)
812 m_next->m_previous = m_previous;
813 if (m_previous)
814 m_previous->m_next = m_next;
815 if (sm_first == this)
816 sm_first = m_next;
817
818 Clear();
819 }
820
821 void wxEventHashTable::Clear()
822 {
823 size_t i;
824 for(i = 0; i < m_size; i++)
825 {
826 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
827 if (eTTnode)
828 {
829 delete eTTnode;
830 }
831 }
832
833 // Necessary in order to not invoke the
834 // overloaded delete operator when statics are cleaned up
835 if (m_eventTypeTable)
836 delete[] m_eventTypeTable;
837
838 m_eventTypeTable = NULL;
839 m_size = 0;
840 }
841
842 // Clear all tables
843 void wxEventHashTable::ClearAll()
844 {
845 wxEventHashTable* table = sm_first;
846 while (table)
847 {
848 table->Clear();
849 table = table->m_next;
850 }
851 }
852
853 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
854 {
855 if (m_rebuildHash)
856 {
857 InitHashTable();
858 m_rebuildHash = false;
859 }
860
861 if (!m_eventTypeTable)
862 return false;
863
864 // Find all entries for the given event type.
865 wxEventType eventType = event.GetEventType();
866 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
867 if (eTTnode && eTTnode->eventType == eventType)
868 {
869 // Now start the search for an event handler
870 // that can handle an event with the given ID.
871 const wxEventTableEntryPointerArray&
872 eventEntryTable = eTTnode->eventEntryTable;
873
874 const size_t count = eventEntryTable.GetCount();
875 for (size_t n = 0; n < count; n++)
876 {
877 if ( wxEvtHandler::
878 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
879 {
880 return true;
881 }
882 }
883 }
884
885 return false;
886 }
887
888 void wxEventHashTable::InitHashTable()
889 {
890 // Loop over the event tables and all its base tables.
891 const wxEventTable *table = &m_table;
892 while (table)
893 {
894 // Retrieve all valid event handler entries
895 const wxEventTableEntry *entry = table->entries;
896 while (entry->m_fn != 0)
897 {
898 // Add the event entry in the Hash.
899 AddEntry(*entry);
900
901 entry++;
902 }
903
904 table = table->baseTable;
905 }
906
907 // Lets free some memory.
908 size_t i;
909 for(i = 0; i < m_size; i++)
910 {
911 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
912 if (eTTnode)
913 {
914 eTTnode->eventEntryTable.Shrink();
915 }
916 }
917 }
918
919 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
920 {
921 // This might happen 'accidentally' as the app is exiting
922 if (!m_eventTypeTable)
923 return;
924
925 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
926 EventTypeTablePointer eTTnode = *peTTnode;
927
928 if (eTTnode)
929 {
930 if (eTTnode->eventType != entry.m_eventType)
931 {
932 // Resize the table!
933 GrowEventTypeTable();
934 // Try again to add it.
935 AddEntry(entry);
936 return;
937 }
938 }
939 else
940 {
941 eTTnode = new EventTypeTable;
942 eTTnode->eventType = entry.m_eventType;
943 *peTTnode = eTTnode;
944 }
945
946 // Fill all hash entries between entry.m_id and entry.m_lastId...
947 eTTnode->eventEntryTable.Add(&entry);
948 }
949
950 void wxEventHashTable::AllocEventTypeTable(size_t size)
951 {
952 m_eventTypeTable = new EventTypeTablePointer[size];
953 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
954 m_size = size;
955 }
956
957 void wxEventHashTable::GrowEventTypeTable()
958 {
959 size_t oldSize = m_size;
960 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
961
962 // TODO: Search the most optimal grow sequence
963 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
964
965 for ( size_t i = 0; i < oldSize; /* */ )
966 {
967 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
968 if (eTToldNode)
969 {
970 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
971 EventTypeTablePointer eTTnode = *peTTnode;
972
973 // Check for collision, we don't want any.
974 if (eTTnode)
975 {
976 GrowEventTypeTable();
977 continue; // Don't increment the counter,
978 // as we still need to add this element.
979 }
980 else
981 {
982 // Get the old value and put it in the new table.
983 *peTTnode = oldEventTypeTable[i];
984 }
985 }
986
987 i++;
988 }
989
990 delete[] oldEventTypeTable;
991 }
992
993
994 // ----------------------------------------------------------------------------
995 // wxEvtHandler
996 // ----------------------------------------------------------------------------
997
998 /*
999 * Event handler
1000 */
1001
1002 wxEvtHandler::wxEvtHandler()
1003 {
1004 m_nextHandler = (wxEvtHandler *) NULL;
1005 m_previousHandler = (wxEvtHandler *) NULL;
1006 m_enabled = true;
1007 m_dynamicEvents = (wxList *) NULL;
1008 m_pendingEvents = (wxList *) NULL;
1009 #if wxUSE_THREADS
1010 # if !defined(__VISAGECPP__)
1011 m_eventsLocker = new wxCriticalSection;
1012 # endif
1013 #endif
1014 // reentrace not allowed by default
1015 m_reentranceAllowed = false;
1016 m_eventHandlingInProgress = false;
1017
1018 // no client data (yet)
1019 m_clientData = NULL;
1020 m_clientDataType = wxClientData_None;
1021 }
1022
1023 wxEvtHandler::~wxEvtHandler()
1024 {
1025 // Takes itself out of the list of handlers
1026 if (m_previousHandler)
1027 m_previousHandler->m_nextHandler = m_nextHandler;
1028
1029 if (m_nextHandler)
1030 m_nextHandler->m_previousHandler = m_previousHandler;
1031
1032 if (m_dynamicEvents)
1033 {
1034 wxList::iterator it = m_dynamicEvents->begin(),
1035 en = m_dynamicEvents->end();
1036 for (;it != en; ++it)
1037 {
1038 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1039 wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1040 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1041 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1042 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1043
1044 if (entry->m_callbackUserData)
1045 delete entry->m_callbackUserData;
1046 delete entry;
1047 }
1048 delete m_dynamicEvents;
1049 };
1050
1051 if (m_pendingEvents)
1052 m_pendingEvents->DeleteContents(true);
1053 delete m_pendingEvents;
1054
1055 #if wxUSE_THREADS
1056 # if !defined(__VISAGECPP__)
1057 delete m_eventsLocker;
1058 # endif
1059
1060 // Remove us from wxPendingEvents if necessary.
1061 if(wxPendingEventsLocker)
1062 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1063 if ( wxPendingEvents )
1064 {
1065 // Delete all occurences of this from the list of pending events
1066 while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1067 }
1068 if(wxPendingEventsLocker)
1069 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1070 #endif
1071
1072 // we only delete object data, not untyped
1073 if ( m_clientDataType == wxClientData_Object )
1074 delete m_clientObject;
1075 }
1076
1077 #if wxUSE_THREADS
1078
1079 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1080 {
1081 // check that we are really in a child thread
1082 wxASSERT_MSG( !wxThread::IsMain(),
1083 wxT("use ProcessEvent() in main thread") );
1084
1085 AddPendingEvent(event);
1086
1087 return true;
1088 }
1089
1090 void wxEvtHandler::ClearEventLocker()
1091 {
1092 #if !defined(__VISAGECPP__)
1093 delete m_eventsLocker;
1094 m_eventsLocker = NULL;
1095 #endif
1096 }
1097
1098 #endif // wxUSE_THREADS
1099
1100 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1101 {
1102 // 1) Add event to list of pending events of this event handler
1103
1104 wxEvent *eventCopy = event.Clone();
1105
1106 // we must be able to copy the events here so the event class must
1107 // implement Clone() properly instead of just providing a NULL stab for it
1108 wxCHECK_RET( eventCopy,
1109 _T("events of this type aren't supposed to be posted") );
1110
1111 wxENTER_CRIT_SECT( Lock() );
1112
1113 if ( !m_pendingEvents )
1114 m_pendingEvents = new wxList;
1115
1116 m_pendingEvents->Append(eventCopy);
1117
1118 wxLEAVE_CRIT_SECT( Lock() );
1119
1120 // 2) Add this event handler to list of event handlers that
1121 // have pending events.
1122
1123 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1124
1125 if ( !wxPendingEvents )
1126 wxPendingEvents = new wxList;
1127 wxPendingEvents->Append(this);
1128
1129 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1130
1131 // 3) Inform the system that new pending events are somewhere,
1132 // and that these should be processed in idle time.
1133 wxWakeUpIdle();
1134 }
1135
1136 void wxEvtHandler::ProcessPendingEvents()
1137 {
1138 // this method is only called by wxApp if this handler does have
1139 // pending events
1140 wxCHECK_RET( m_pendingEvents,
1141 wxT("Please call wxApp::ProcessPendingEvents() instead") );
1142
1143 // eventhandling is now in progess
1144 m_eventHandlingInProgress = true;
1145
1146 wxENTER_CRIT_SECT( Lock() );
1147
1148 // we leave the loop once we have processed all events that were present at
1149 // the start of ProcessPendingEvents because otherwise we could get into
1150 // infinite loop if the pending event handler execution resulted in another
1151 // event being posted
1152 size_t n = m_pendingEvents->size();
1153 for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1154 node;
1155 node = m_pendingEvents->GetFirst() )
1156 {
1157 wxEvent *event = (wxEvent *)node->GetData();
1158
1159 // It's importan we remove event from list before processing it.
1160 // Else a nested event loop, for example from a modal dialog, might
1161 // process the same event again.
1162
1163 m_pendingEvents->Erase(node);
1164
1165 wxLEAVE_CRIT_SECT( Lock() );
1166
1167 ProcessEvent(*event);
1168
1169 delete event;
1170
1171 wxENTER_CRIT_SECT( Lock() );
1172
1173 if ( --n == 0 )
1174 break;
1175 }
1176
1177 wxLEAVE_CRIT_SECT( Lock() );
1178
1179 // eventhandling no longer in progess
1180 m_eventHandlingInProgress = false;
1181 }
1182
1183 /*
1184 * Event table stuff
1185 */
1186 /* static */ bool
1187 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1188 wxEvtHandler *handler,
1189 wxEvent& event)
1190 {
1191 int tableId1 = entry.m_id,
1192 tableId2 = entry.m_lastId;
1193
1194 // match only if the event type is the same and the id is either -1 in
1195 // the event table (meaning "any") or the event id matches the id
1196 // specified in the event table either exactly or by falling into
1197 // range between first and last
1198 if ((tableId1 == wxID_ANY) ||
1199 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1200 (tableId2 != wxID_ANY &&
1201 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1202 {
1203 event.Skip(false);
1204 event.m_callbackUserData = entry.m_callbackUserData;
1205
1206 #if wxUSE_EXCEPTIONS
1207 if ( wxTheApp )
1208 {
1209 // call the handler via wxApp method which allows the user to catch
1210 // any exceptions which may be thrown by any handler in the program
1211 // in one place
1212 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1213 }
1214 else
1215 #endif // wxUSE_EXCEPTIONS
1216 {
1217 // no need for an extra virtual function call
1218 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1219 }
1220
1221 if (!event.GetSkipped())
1222 return true;
1223 }
1224
1225 return false;
1226 }
1227
1228 bool wxEvtHandler::TryParent(wxEvent& event)
1229 {
1230 if ( wxTheApp && (this != wxTheApp) )
1231 {
1232 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1233 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1234 // processed appropriately via SearchEventTable.
1235 if ( event.GetEventType() != wxEVT_IDLE )
1236 {
1237 if ( wxTheApp->ProcessEvent(event) )
1238 return true;
1239 }
1240 }
1241
1242 return false;
1243 }
1244
1245 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1246 {
1247 // allow the application to hook into event processing
1248 if ( wxTheApp )
1249 {
1250 int rc = wxTheApp->FilterEvent(event);
1251 if ( rc != -1 )
1252 {
1253 wxASSERT_MSG( rc == 1 || rc == 0,
1254 _T("unexpected wxApp::FilterEvent return value") );
1255
1256 return rc != 0;
1257 }
1258 //else: proceed normally
1259 }
1260
1261 // An event handler can be enabled or disabled
1262 if ( GetEvtHandlerEnabled() )
1263 {
1264 // if we have a validator, it has higher priority than our own event
1265 // table
1266 if ( TryValidator(event) )
1267 return true;
1268
1269 // Handle per-instance dynamic event tables first
1270 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1271 return true;
1272
1273 // Then static per-class event tables
1274 if ( GetEventHashTable().HandleEvent(event, this) )
1275 return true;
1276 }
1277
1278 // Try going down the event handler chain
1279 if ( GetNextHandler() )
1280 {
1281 if ( GetNextHandler()->ProcessEvent(event) )
1282 return true;
1283 }
1284
1285 // Finally propagate the event upwards the window chain and/or to the
1286 // application object as necessary
1287 return TryParent(event);
1288 }
1289
1290
1291 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1292 {
1293 const wxEventType eventType = event.GetEventType();
1294 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1295 {
1296 const wxEventTableEntry& entry = table.entries[i];
1297 if ( eventType == entry.m_eventType )
1298 {
1299 if ( ProcessEventIfMatches(entry, this, event) )
1300 return true;
1301 }
1302 }
1303
1304 return false;
1305 }
1306
1307 void wxEvtHandler::Connect( int id, int lastId,
1308 int eventType,
1309 wxObjectEventFunction func,
1310 wxObject *userData,
1311 wxEvtHandler* eventSink )
1312 {
1313 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1314 wxEventTableEntry *entry = new wxEventTableEntry;
1315 entry->m_eventType = eventType;
1316 entry->m_id = id;
1317 entry->m_lastId = lastId;
1318 entry->m_fn = func;
1319 entry->m_callbackUserData = userData;
1320 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1321 wxDynamicEventTableEntry *entry =
1322 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1323 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1324
1325 if (!m_dynamicEvents)
1326 m_dynamicEvents = new wxList;
1327
1328 // Insert at the front of the list so most recent additions are found first
1329 m_dynamicEvents->Insert( (wxObject*) entry );
1330 }
1331
1332 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1333 wxObjectEventFunction func,
1334 wxObject *userData,
1335 wxEvtHandler* eventSink )
1336 {
1337 if (!m_dynamicEvents)
1338 return false;
1339
1340 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1341 while (node)
1342 {
1343 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1344 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1345 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1346 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1347 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1348
1349 if ((entry->m_id == id) &&
1350 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1351 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1352 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1353 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1354 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1355 {
1356 if (entry->m_callbackUserData)
1357 delete entry->m_callbackUserData;
1358 m_dynamicEvents->Erase( node );
1359 delete entry;
1360 return true;
1361 }
1362 node = node->GetNext();
1363 }
1364 return false;
1365 }
1366
1367 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1368 {
1369 wxCHECK_MSG( m_dynamicEvents, false,
1370 wxT("caller should check that we have dynamic events") );
1371
1372 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1373 while (node)
1374 {
1375 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1376 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1377 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1378 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1379 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1380
1381 // get next node before (maybe) calling the event handler as it could
1382 // call Disconnect() invalidating the current node
1383 node = node->GetNext();
1384
1385 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1386 {
1387 wxEvtHandler *handler =
1388 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1389 entry->m_eventSink ? entry->m_eventSink
1390 :
1391 #endif
1392 this;
1393
1394 if ( ProcessEventIfMatches(*entry, handler, event) )
1395 {
1396 return true;
1397 }
1398 }
1399 }
1400
1401 return false;
1402 }
1403
1404 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1405 {
1406 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1407 wxT("can't have both object and void client data") );
1408
1409 if ( m_clientObject )
1410 delete m_clientObject;
1411
1412 m_clientObject = data;
1413 m_clientDataType = wxClientData_Object;
1414 }
1415
1416 wxClientData *wxEvtHandler::DoGetClientObject() const
1417 {
1418 // it's not an error to call GetClientObject() on a window which doesn't
1419 // have client data at all - NULL will be returned
1420 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1421 wxT("this window doesn't have object client data") );
1422
1423 return m_clientObject;
1424 }
1425
1426 void wxEvtHandler::DoSetClientData( void *data )
1427 {
1428 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1429 wxT("can't have both object and void client data") );
1430
1431 m_clientData = data;
1432 m_clientDataType = wxClientData_Void;
1433 }
1434
1435 void *wxEvtHandler::DoGetClientData() const
1436 {
1437 // it's not an error to call GetClientData() on a window which doesn't have
1438 // client data at all - NULL will be returned
1439 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1440 wxT("this window doesn't have void client data") );
1441
1442 return m_clientData;
1443 }
1444
1445 #endif // wxUSE_BASE
1446
1447 #if wxUSE_GUI
1448
1449 // Find a window with the focus, that is also a descendant of the given window.
1450 // This is used to determine the window to initially send commands to.
1451 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1452 {
1453 // Process events starting with the window with the focus, if any.
1454 wxWindow* focusWin = wxWindow::FindFocus();
1455 wxWindow* win = focusWin;
1456
1457 // Check if this is a descendant of this frame.
1458 // If not, win will be set to NULL.
1459 while (win)
1460 {
1461 if (win == ancestor)
1462 break;
1463 else
1464 win = win->GetParent();
1465 }
1466 if (win == (wxWindow*) NULL)
1467 focusWin = (wxWindow*) NULL;
1468
1469 return focusWin;
1470 }
1471
1472 #endif // wxUSE_GUI
wxWidgets (Impactor)