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Contents of /trunk/3rdparty/wxWidgets/src/common/event.cpp

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Revision 10 - (show annotations) (download)
Mon Sep 6 11:40:06 2010 UTC (9 years, 5 months ago) by william
File size: 43442 byte(s)
exported r3113 from ./upstream/trunk
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: event.cpp 56712 2008-11-08 22:41:10Z VZ $
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/window.h"
38 #include "wx/control.h"
39 #include "wx/dc.h"
40 #include "wx/textctrl.h"
41 #include "wx/validate.h"
42 #endif // wxUSE_GUI
43 #endif
44
45 #if wxUSE_BASE
46 #include "wx/ptr_scpd.h"
47
48 wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
49 wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
50 #endif // wxUSE_BASE
51
52 // ----------------------------------------------------------------------------
53 // wxWin macros
54 // ----------------------------------------------------------------------------
55
56 #if wxUSE_BASE
57 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
58 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
59 #endif // wxUSE_BASE
60
61 #if wxUSE_GUI
62 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
63 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
64 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
65 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
66 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
67 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
68 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
95 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
96 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
97 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
98 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
99 #endif // wxUSE_GUI
100
101 #if wxUSE_BASE
102
103 const wxEventTable *wxEvtHandler::GetEventTable() const
104 { return &wxEvtHandler::sm_eventTable; }
105
106 const wxEventTable wxEvtHandler::sm_eventTable =
107 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
108
109 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
110 { return wxEvtHandler::sm_eventHashTable; }
111
112 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
113
114 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
115 { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
116
117
118 #ifdef __WXDEBUG__
119 // Clear up event hash table contents or we can get problems
120 // when C++ is cleaning up the static object
121 class wxEventTableEntryModule: public wxModule
122 {
123 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
124 public:
125 wxEventTableEntryModule() {}
126 bool OnInit()
127 {
128 wxEventHashTable::ReconstructAll();
129 return true;
130 }
131 void OnExit()
132 {
133 wxEventHashTable::ClearAll();
134 }
135 };
136 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
137 #endif
138
139 // ----------------------------------------------------------------------------
140 // global variables
141 // ----------------------------------------------------------------------------
142
143 // To put pending event handlers
144 wxList *wxPendingEvents = (wxList *)NULL;
145
146 #if wxUSE_THREADS
147 // protects wxPendingEvents list
148 wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
149 #endif
150
151 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
152
153 // common event types are defined here, other event types are defined by the
154 // components which use them
155
156 const wxEventType wxEVT_FIRST = 10000;
157 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
158
159 DEFINE_EVENT_TYPE(wxEVT_NULL)
160 DEFINE_EVENT_TYPE(wxEVT_IDLE)
161 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
162
163 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
164
165 #endif // wxUSE_BASE
166
167 #if wxUSE_GUI
168
169 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
170
171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
179 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
180 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
181 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
182 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
183 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
184 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
185 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
186 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
187
188 // Sockets and timers send events, too
189 DEFINE_EVENT_TYPE(wxEVT_TIMER)
190
191 // Mouse event types
192 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
193 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
194 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
195 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
196 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
197 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
198 DEFINE_EVENT_TYPE(wxEVT_MOTION)
199 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
200 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
201 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
202 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
203 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
204 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
205 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
206 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
207 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
208
209 // Non-client mouse events
210 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
211 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
212 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
213 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
214 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
215 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
216 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
217 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
218 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
219 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
220 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
221 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
222
223 // Character input event type
224 DEFINE_EVENT_TYPE(wxEVT_CHAR)
225 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
226 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
227 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
228 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
229 #if wxUSE_HOTKEY
230 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
231 #endif
232
233 // Set cursor event
234 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
235
236 // wxScrollbar and wxSlider event identifiers
237 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
238 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
239 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
240 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
241 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
242 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
243 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
244 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
245 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
246
247 // Scroll events from wxWindow
248 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
249 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
250 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
251 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
252 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
253 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
254 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
255 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
256
257 // System events
258 DEFINE_EVENT_TYPE(wxEVT_SIZE)
259 DEFINE_EVENT_TYPE(wxEVT_SIZING)
260 DEFINE_EVENT_TYPE(wxEVT_MOVE)
261 DEFINE_EVENT_TYPE(wxEVT_MOVING)
262 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
263 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
264 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
265 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
266 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
267 DEFINE_EVENT_TYPE(wxEVT_POWER)
268 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
269 DEFINE_EVENT_TYPE(wxEVT_CREATE)
270 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
271 DEFINE_EVENT_TYPE(wxEVT_SHOW)
272 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
273 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
274 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
275 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
276 DEFINE_EVENT_TYPE(wxEVT_PAINT)
277 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
278 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
279 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
280 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
281 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
282 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
283 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
284 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
285 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
286 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
287 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
288 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
289 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
290 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
291 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
292 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
293 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
294 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
295 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
296 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
297 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
298 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
299
300 // Clipboard events
301 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
302 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
303 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
304
305 // Generic command events
306 // Note: a click is a higher-level event than button down/up
307 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
308 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
309 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
310 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
311 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
312 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
313 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
314
315 // Help events
316 DEFINE_EVENT_TYPE(wxEVT_HELP)
317 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
318
319 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
320
321 #endif // wxUSE_GUI
322
323 #if wxUSE_BASE
324
325 // ============================================================================
326 // implementation
327 // ============================================================================
328
329 // ----------------------------------------------------------------------------
330 // event initialization
331 // ----------------------------------------------------------------------------
332
333 int wxNewEventType()
334 {
335 // MT-FIXME
336 static int s_lastUsedEventType = wxEVT_FIRST;
337
338 return s_lastUsedEventType++;
339 }
340
341 // ----------------------------------------------------------------------------
342 // wxEvent
343 // ----------------------------------------------------------------------------
344
345 /*
346 * General wxWidgets events, covering
347 * all interesting things that might happen (button clicking, resizing,
348 * setting text in widgets, etc.).
349 *
350 * For each completely new event type, derive a new event class.
351 *
352 */
353
354 wxEvent::wxEvent(int theId, wxEventType commandType )
355 {
356 m_eventType = commandType;
357 m_eventObject = (wxObject *) NULL;
358 m_timeStamp = 0;
359 m_id = theId;
360 m_skipped = false;
361 m_callbackUserData = (wxObject *) NULL;
362 m_isCommandEvent = false;
363 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
364 }
365
366 wxEvent::wxEvent(const wxEvent &src)
367 : wxObject(src)
368 , m_eventObject(src.m_eventObject)
369 , m_eventType(src.m_eventType)
370 , m_timeStamp(src.m_timeStamp)
371 , m_id(src.m_id)
372 , m_callbackUserData(src.m_callbackUserData)
373 , m_propagationLevel(src.m_propagationLevel)
374 , m_skipped(src.m_skipped)
375 , m_isCommandEvent(src.m_isCommandEvent)
376 {
377 }
378
379 #endif // wxUSE_BASE
380
381 #if wxUSE_GUI
382
383 /*
384 * Command events
385 *
386 */
387
388 #ifdef __VISUALC__
389 // 'this' : used in base member initializer list (for m_commandString)
390 #pragma warning(disable:4355)
391 #endif
392
393 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
394 : wxEvent(theId, commandType)
395 #if WXWIN_COMPATIBILITY_2_4
396 , m_commandString(this)
397 #endif
398 {
399 m_clientData = (char *) NULL;
400 m_clientObject = (wxClientData *) NULL;
401 m_extraLong = 0;
402 m_commandInt = 0;
403 m_isCommandEvent = true;
404
405 // the command events are propagated upwards by default
406 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
407 }
408
409 #ifdef __VISUALC__
410 #pragma warning(default:4355)
411 #endif
412
413 wxString wxCommandEvent::GetString() const
414 {
415 if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
416 return m_cmdString;
417 else
418 {
419 #if wxUSE_TEXTCTRL
420 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
421 if(txt)
422 return txt->GetValue();
423 else
424 #endif // wxUSE_TEXTCTRL
425 return m_cmdString;
426 }
427 }
428
429 /*
430 * UI update events
431 */
432
433 #if wxUSE_LONGLONG
434 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
435 #endif
436
437 long wxUpdateUIEvent::sm_updateInterval = 0;
438
439 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
440
441 // Can we update?
442 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
443 {
444 // Don't update if we've switched global updating off
445 // and this window doesn't support updates.
446 if (win &&
447 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
448 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
449 return false;
450
451 if (sm_updateInterval == -1)
452 return false;
453
454 if (sm_updateInterval == 0)
455 return true;
456
457 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
458 wxLongLong now = wxGetLocalTimeMillis();
459 if (now > (sm_lastUpdate + sm_updateInterval))
460 {
461 return true;
462 }
463
464 return false;
465 #else
466 // If we don't have wxStopWatch or wxLongLong, we
467 // should err on the safe side and update now anyway.
468 return true;
469 #endif
470 }
471
472 // Reset the update time to provide a delay until the next
473 // time we should update
474 void wxUpdateUIEvent::ResetUpdateTime()
475 {
476 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
477 if (sm_updateInterval > 0)
478 {
479 wxLongLong now = wxGetLocalTimeMillis();
480 if (now > (sm_lastUpdate + sm_updateInterval))
481 {
482 sm_lastUpdate = now;
483 }
484 }
485 #endif
486 }
487
488 /*
489 * Idle events
490 */
491
492 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
493
494 // Can we send an idle event?
495 bool wxIdleEvent::CanSend(wxWindow* win)
496 {
497 // Don't update if we've switched global updating off
498 // and this window doesn't support updates.
499 if (win &&
500 (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
501 ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
502 return false;
503
504 return true;
505 }
506
507 /*
508 * Scroll events
509 */
510
511 wxScrollEvent::wxScrollEvent(wxEventType commandType,
512 int id,
513 int pos,
514 int orient)
515 : wxCommandEvent(commandType, id)
516 {
517 m_extraLong = orient;
518 m_commandInt = pos;
519 }
520
521 /*
522 * ScrollWin events
523 */
524
525 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
526 int pos,
527 int orient)
528 {
529 m_eventType = commandType;
530 m_extraLong = orient;
531 m_commandInt = pos;
532 }
533
534 /*
535 * Mouse events
536 *
537 */
538
539 wxMouseEvent::wxMouseEvent(wxEventType commandType)
540 {
541 m_eventType = commandType;
542 m_metaDown = false;
543 m_altDown = false;
544 m_controlDown = false;
545 m_shiftDown = false;
546 m_leftDown = false;
547 m_rightDown = false;
548 m_middleDown = false;
549 m_x = 0;
550 m_y = 0;
551 m_wheelRotation = 0;
552 m_wheelDelta = 0;
553 m_linesPerAction = 0;
554 }
555
556 void wxMouseEvent::Assign(const wxMouseEvent& event)
557 {
558 m_eventType = event.m_eventType;
559
560 m_x = event.m_x;
561 m_y = event.m_y;
562
563 m_leftDown = event.m_leftDown;
564 m_middleDown = event.m_middleDown;
565 m_rightDown = event.m_rightDown;
566
567 m_controlDown = event.m_controlDown;
568 m_shiftDown = event.m_shiftDown;
569 m_altDown = event.m_altDown;
570 m_metaDown = event.m_metaDown;
571
572 m_wheelRotation = event.m_wheelRotation;
573 m_wheelDelta = event.m_wheelDelta;
574 m_linesPerAction = event.m_linesPerAction;
575 }
576
577 // return true if was a button dclick event
578 bool wxMouseEvent::ButtonDClick(int but) const
579 {
580 switch (but)
581 {
582 default:
583 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
584 // fall through
585
586 case wxMOUSE_BTN_ANY:
587 return (LeftDClick() || MiddleDClick() || RightDClick());
588
589 case wxMOUSE_BTN_LEFT:
590 return LeftDClick();
591
592 case wxMOUSE_BTN_MIDDLE:
593 return MiddleDClick();
594
595 case wxMOUSE_BTN_RIGHT:
596 return RightDClick();
597 }
598 }
599
600 // return true if was a button down event
601 bool wxMouseEvent::ButtonDown(int but) const
602 {
603 switch (but)
604 {
605 default:
606 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
607 // fall through
608
609 case wxMOUSE_BTN_ANY:
610 return (LeftDown() || MiddleDown() || RightDown());
611
612 case wxMOUSE_BTN_LEFT:
613 return LeftDown();
614
615 case wxMOUSE_BTN_MIDDLE:
616 return MiddleDown();
617
618 case wxMOUSE_BTN_RIGHT:
619 return RightDown();
620 }
621 }
622
623 // return true if was a button up event
624 bool wxMouseEvent::ButtonUp(int but) const
625 {
626 switch (but)
627 {
628 default:
629 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
630 // fall through
631
632 case wxMOUSE_BTN_ANY:
633 return (LeftUp() || MiddleUp() || RightUp());
634
635 case wxMOUSE_BTN_LEFT:
636 return LeftUp();
637
638 case wxMOUSE_BTN_MIDDLE:
639 return MiddleUp();
640
641 case wxMOUSE_BTN_RIGHT:
642 return RightUp();
643 }
644 }
645
646 // return true if the given button is currently changing state
647 bool wxMouseEvent::Button(int but) const
648 {
649 switch (but)
650 {
651 default:
652 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
653 // fall through
654
655 case wxMOUSE_BTN_ANY:
656 return ButtonUp(wxMOUSE_BTN_ANY) ||
657 ButtonDown(wxMOUSE_BTN_ANY) ||
658 ButtonDClick(wxMOUSE_BTN_ANY);
659
660 case wxMOUSE_BTN_LEFT:
661 return LeftDown() || LeftUp() || LeftDClick();
662
663 case wxMOUSE_BTN_MIDDLE:
664 return MiddleDown() || MiddleUp() || MiddleDClick();
665
666 case wxMOUSE_BTN_RIGHT:
667 return RightDown() || RightUp() || RightDClick();
668 }
669 }
670
671 bool wxMouseEvent::ButtonIsDown(int but) const
672 {
673 switch (but)
674 {
675 default:
676 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
677 // fall through
678
679 case wxMOUSE_BTN_ANY:
680 return LeftIsDown() || MiddleIsDown() || RightIsDown();
681
682 case wxMOUSE_BTN_LEFT:
683 return LeftIsDown();
684
685 case wxMOUSE_BTN_MIDDLE:
686 return MiddleIsDown();
687
688 case wxMOUSE_BTN_RIGHT:
689 return RightIsDown();
690 }
691 }
692
693 int wxMouseEvent::GetButton() const
694 {
695 for ( int i = 1; i <= 3; i++ )
696 {
697 if ( Button(i) )
698 {
699 return i;
700 }
701 }
702
703 return wxMOUSE_BTN_NONE;
704 }
705
706 // Find the logical position of the event given the DC
707 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
708 {
709 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
710 return pt;
711 }
712
713
714 /*
715 * Keyboard event
716 *
717 */
718
719 wxKeyEvent::wxKeyEvent(wxEventType type)
720 {
721 m_eventType = type;
722 m_shiftDown = false;
723 m_controlDown = false;
724 m_metaDown = false;
725 m_altDown = false;
726 m_keyCode = 0;
727 m_scanCode = 0;
728 #if wxUSE_UNICODE
729 m_uniChar = 0;
730 #endif
731 }
732
733 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
734 : wxEvent(evt)
735 {
736 m_x = evt.m_x;
737 m_y = evt.m_y;
738
739 m_keyCode = evt.m_keyCode;
740
741 m_controlDown = evt.m_controlDown;
742 m_shiftDown = evt.m_shiftDown;
743 m_altDown = evt.m_altDown;
744 m_metaDown = evt.m_metaDown;
745 m_scanCode = evt.m_scanCode;
746 m_rawCode = evt.m_rawCode;
747 m_rawFlags = evt.m_rawFlags;
748
749 #if wxUSE_UNICODE
750 m_uniChar = evt.m_uniChar;
751 #endif
752 }
753
754 #if WXWIN_COMPATIBILITY_2_6
755 long wxKeyEvent::KeyCode() const
756 {
757 return m_keyCode;
758 }
759 #endif // WXWIN_COMPATIBILITY_2_6
760
761 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
762 {
763 SetEventType(wxEVT_CREATE);
764 SetEventObject(win);
765 }
766
767 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
768 {
769 SetEventType(wxEVT_DESTROY);
770 SetEventObject(win);
771 }
772
773 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
774 : wxCommandEvent(wxEVT_CHILD_FOCUS)
775 {
776 SetEventObject(win);
777 }
778
779 // ----------------------------------------------------------------------------
780 // wxHelpEvent
781 // ----------------------------------------------------------------------------
782
783 /* static */
784 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
785 {
786 if ( origin == Origin_Unknown )
787 {
788 // assume that the event comes from the help button if it's not from
789 // keyboard and that pressing F1 always results in the help event
790 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
791 }
792
793 return origin;
794 }
795
796 #endif // wxUSE_GUI
797
798
799 #if wxUSE_BASE
800
801 // ----------------------------------------------------------------------------
802 // wxEventHashTable
803 // ----------------------------------------------------------------------------
804
805 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
806
807 wxEventHashTable* wxEventHashTable::sm_first = NULL;
808
809 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
810 : m_table(table),
811 m_rebuildHash(true)
812 {
813 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
814
815 m_next = sm_first;
816 if (m_next)
817 m_next->m_previous = this;
818 sm_first = this;
819 }
820
821 wxEventHashTable::~wxEventHashTable()
822 {
823 if (m_next)
824 m_next->m_previous = m_previous;
825 if (m_previous)
826 m_previous->m_next = m_next;
827 if (sm_first == this)
828 sm_first = m_next;
829
830 Clear();
831 }
832
833 void wxEventHashTable::Clear()
834 {
835 size_t i;
836 for(i = 0; i < m_size; i++)
837 {
838 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
839 if (eTTnode)
840 {
841 delete eTTnode;
842 }
843 }
844
845 // Necessary in order to not invoke the
846 // overloaded delete operator when statics are cleaned up
847 if (m_eventTypeTable)
848 delete[] m_eventTypeTable;
849
850 m_eventTypeTable = NULL;
851 m_size = 0;
852 }
853
854 // Clear all tables
855 void wxEventHashTable::ClearAll()
856 {
857 wxEventHashTable* table = sm_first;
858 while (table)
859 {
860 table->Clear();
861 table = table->m_next;
862 }
863 }
864
865 // Rebuild all tables if they were cleared by ClearAll
866 void wxEventHashTable::ReconstructAll()
867 {
868 wxEventHashTable* table = sm_first;
869 while (table)
870 {
871 // This will only be true if the event table was cleared.
872 // What we do here is basically what the constructor does.
873 if(table->m_eventTypeTable == NULL)
874 {
875 table->AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
876 table->m_rebuildHash = true;
877 }
878 table = table->m_next;
879 }
880 }
881
882 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
883 {
884 if (m_rebuildHash)
885 {
886 InitHashTable();
887 m_rebuildHash = false;
888 }
889
890 if (!m_eventTypeTable)
891 return false;
892
893 // Find all entries for the given event type.
894 wxEventType eventType = event.GetEventType();
895 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
896 if (eTTnode && eTTnode->eventType == eventType)
897 {
898 // Now start the search for an event handler
899 // that can handle an event with the given ID.
900 const wxEventTableEntryPointerArray&
901 eventEntryTable = eTTnode->eventEntryTable;
902
903 const size_t count = eventEntryTable.GetCount();
904 for (size_t n = 0; n < count; n++)
905 {
906 if ( wxEvtHandler::
907 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
908 {
909 return true;
910 }
911 }
912 }
913
914 return false;
915 }
916
917 void wxEventHashTable::InitHashTable()
918 {
919 // Loop over the event tables and all its base tables.
920 const wxEventTable *table = &m_table;
921 while (table)
922 {
923 // Retrieve all valid event handler entries
924 const wxEventTableEntry *entry = table->entries;
925 while (entry->m_fn != 0)
926 {
927 // Add the event entry in the Hash.
928 AddEntry(*entry);
929
930 entry++;
931 }
932
933 table = table->baseTable;
934 }
935
936 // Lets free some memory.
937 size_t i;
938 for(i = 0; i < m_size; i++)
939 {
940 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
941 if (eTTnode)
942 {
943 eTTnode->eventEntryTable.Shrink();
944 }
945 }
946 }
947
948 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
949 {
950 // This might happen 'accidentally' as the app is exiting
951 if (!m_eventTypeTable)
952 return;
953
954 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
955 EventTypeTablePointer eTTnode = *peTTnode;
956
957 if (eTTnode)
958 {
959 if (eTTnode->eventType != entry.m_eventType)
960 {
961 // Resize the table!
962 GrowEventTypeTable();
963 // Try again to add it.
964 AddEntry(entry);
965 return;
966 }
967 }
968 else
969 {
970 eTTnode = new EventTypeTable;
971 eTTnode->eventType = entry.m_eventType;
972 *peTTnode = eTTnode;
973 }
974
975 // Fill all hash entries between entry.m_id and entry.m_lastId...
976 eTTnode->eventEntryTable.Add(&entry);
977 }
978
979 void wxEventHashTable::AllocEventTypeTable(size_t size)
980 {
981 m_eventTypeTable = new EventTypeTablePointer[size];
982 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
983 m_size = size;
984 }
985
986 void wxEventHashTable::GrowEventTypeTable()
987 {
988 size_t oldSize = m_size;
989 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
990
991 // TODO: Search the most optimal grow sequence
992 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
993
994 for ( size_t i = 0; i < oldSize; /* */ )
995 {
996 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
997 if (eTToldNode)
998 {
999 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1000 EventTypeTablePointer eTTnode = *peTTnode;
1001
1002 // Check for collision, we don't want any.
1003 if (eTTnode)
1004 {
1005 GrowEventTypeTable();
1006 continue; // Don't increment the counter,
1007 // as we still need to add this element.
1008 }
1009 else
1010 {
1011 // Get the old value and put it in the new table.
1012 *peTTnode = oldEventTypeTable[i];
1013 }
1014 }
1015
1016 i++;
1017 }
1018
1019 delete[] oldEventTypeTable;
1020 }
1021
1022
1023 // ----------------------------------------------------------------------------
1024 // wxEvtHandler
1025 // ----------------------------------------------------------------------------
1026
1027 /*
1028 * Event handler
1029 */
1030
1031 wxEvtHandler::wxEvtHandler()
1032 {
1033 m_nextHandler = (wxEvtHandler *) NULL;
1034 m_previousHandler = (wxEvtHandler *) NULL;
1035 m_enabled = true;
1036 m_dynamicEvents = (wxList *) NULL;
1037 m_pendingEvents = (wxList *) NULL;
1038 #if wxUSE_THREADS
1039 # if !defined(__VISAGECPP__)
1040 m_eventsLocker = new wxCriticalSection;
1041 # endif
1042 #endif
1043
1044 // no client data (yet)
1045 m_clientData = NULL;
1046 m_clientDataType = wxClientData_None;
1047 }
1048
1049 wxEvtHandler::~wxEvtHandler()
1050 {
1051 // Takes itself out of the list of handlers
1052 if (m_previousHandler)
1053 m_previousHandler->m_nextHandler = m_nextHandler;
1054
1055 if (m_nextHandler)
1056 m_nextHandler->m_previousHandler = m_previousHandler;
1057
1058 if (m_dynamicEvents)
1059 {
1060 for ( wxList::iterator it = m_dynamicEvents->begin(),
1061 end = m_dynamicEvents->end();
1062 it != end;
1063 ++it )
1064 {
1065 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1066 wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1067 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1068 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1069 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1070
1071 if (entry->m_callbackUserData)
1072 delete entry->m_callbackUserData;
1073 delete entry;
1074 }
1075 delete m_dynamicEvents;
1076 };
1077
1078 if (m_pendingEvents)
1079 m_pendingEvents->DeleteContents(true);
1080 delete m_pendingEvents;
1081
1082 #if wxUSE_THREADS
1083 # if !defined(__VISAGECPP__)
1084 delete m_eventsLocker;
1085 # endif
1086
1087 // Remove us from wxPendingEvents if necessary.
1088 if(wxPendingEventsLocker)
1089 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1090 if ( wxPendingEvents )
1091 {
1092 // Delete all occurences of this from the list of pending events
1093 while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1094 }
1095 if(wxPendingEventsLocker)
1096 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1097 #endif
1098
1099 // we only delete object data, not untyped
1100 if ( m_clientDataType == wxClientData_Object )
1101 delete m_clientObject;
1102 }
1103
1104 #if wxUSE_THREADS
1105
1106 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1107 {
1108 // check that we are really in a child thread
1109 wxASSERT_MSG( !wxThread::IsMain(),
1110 wxT("use ProcessEvent() in main thread") );
1111
1112 AddPendingEvent(event);
1113
1114 return true;
1115 }
1116
1117 void wxEvtHandler::ClearEventLocker()
1118 {
1119 #if !defined(__VISAGECPP__)
1120 delete m_eventsLocker;
1121 m_eventsLocker = NULL;
1122 #endif
1123 }
1124
1125 #endif // wxUSE_THREADS
1126
1127 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1128 {
1129 // 1) Add event to list of pending events of this event handler
1130
1131 wxEvent *eventCopy = event.Clone();
1132
1133 // we must be able to copy the events here so the event class must
1134 // implement Clone() properly instead of just providing a NULL stab for it
1135 wxCHECK_RET( eventCopy,
1136 _T("events of this type aren't supposed to be posted") );
1137
1138 wxENTER_CRIT_SECT( Lock() );
1139
1140 if ( !m_pendingEvents )
1141 m_pendingEvents = new wxList;
1142
1143 m_pendingEvents->Append(eventCopy);
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 wxPendingEvents->Append(this);
1153
1154 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1155
1156 wxLEAVE_CRIT_SECT( Lock() );
1157
1158 // 3) Inform the system that new pending events are somewhere,
1159 // and that these should be processed in idle time.
1160 wxWakeUpIdle();
1161 }
1162
1163 void wxEvtHandler::ProcessPendingEvents()
1164 {
1165 // this method is only called by wxApp if this handler does have
1166 // pending events
1167 wxCHECK_RET( m_pendingEvents,
1168 wxT("Please call wxApp::ProcessPendingEvents() instead") );
1169
1170 wxENTER_CRIT_SECT( Lock() );
1171
1172 // we leave the loop once we have processed all events that were present at
1173 // the start of ProcessPendingEvents because otherwise we could get into
1174 // infinite loop if the pending event handler execution resulted in another
1175 // event being posted
1176 size_t n = m_pendingEvents->size();
1177 for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1178 node;
1179 node = m_pendingEvents->GetFirst() )
1180 {
1181 wxEventPtr event(wx_static_cast(wxEvent *, node->GetData()));
1182
1183 // It's important we remove event from list before processing it.
1184 // Else a nested event loop, for example from a modal dialog, might
1185 // process the same event again.
1186
1187 m_pendingEvents->Erase(node);
1188
1189 wxLEAVE_CRIT_SECT( Lock() );
1190
1191 ProcessEvent(*event);
1192
1193 wxENTER_CRIT_SECT( Lock() );
1194
1195 if ( --n == 0 )
1196 break;
1197 }
1198
1199 wxLEAVE_CRIT_SECT( Lock() );
1200 }
1201
1202 /*
1203 * Event table stuff
1204 */
1205 /* static */ bool
1206 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1207 wxEvtHandler *handler,
1208 wxEvent& event)
1209 {
1210 int tableId1 = entry.m_id,
1211 tableId2 = entry.m_lastId;
1212
1213 // match only if the event type is the same and the id is either -1 in
1214 // the event table (meaning "any") or the event id matches the id
1215 // specified in the event table either exactly or by falling into
1216 // range between first and last
1217 if ((tableId1 == wxID_ANY) ||
1218 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1219 (tableId2 != wxID_ANY &&
1220 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1221 {
1222 event.Skip(false);
1223 event.m_callbackUserData = entry.m_callbackUserData;
1224
1225 #if wxUSE_EXCEPTIONS
1226 if ( wxTheApp )
1227 {
1228 // call the handler via wxApp method which allows the user to catch
1229 // any exceptions which may be thrown by any handler in the program
1230 // in one place
1231 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1232 }
1233 else
1234 #endif // wxUSE_EXCEPTIONS
1235 {
1236 // no need for an extra virtual function call
1237 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1238 }
1239
1240 if (!event.GetSkipped())
1241 return true;
1242 }
1243
1244 return false;
1245 }
1246
1247 bool wxEvtHandler::TryParent(wxEvent& event)
1248 {
1249 if ( wxTheApp && (this != wxTheApp) )
1250 {
1251 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1252 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1253 // processed appropriately via SearchEventTable.
1254 if ( event.GetEventType() != wxEVT_IDLE )
1255 {
1256 if ( wxTheApp->ProcessEvent(event) )
1257 return true;
1258 }
1259 }
1260
1261 return false;
1262 }
1263
1264 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1265 {
1266 // allow the application to hook into event processing
1267 if ( wxTheApp )
1268 {
1269 int rc = wxTheApp->FilterEvent(event);
1270 if ( rc != -1 )
1271 {
1272 wxASSERT_MSG( rc == 1 || rc == 0,
1273 _T("unexpected wxApp::FilterEvent return value") );
1274
1275 return rc != 0;
1276 }
1277 //else: proceed normally
1278 }
1279
1280 // An event handler can be enabled or disabled
1281 if ( GetEvtHandlerEnabled() )
1282 {
1283 // if we have a validator, it has higher priority than our own event
1284 // table
1285 if ( TryValidator(event) )
1286 return true;
1287
1288 // Handle per-instance dynamic event tables first
1289 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1290 return true;
1291
1292 // Then static per-class event tables
1293 if ( GetEventHashTable().HandleEvent(event, this) )
1294 return true;
1295 }
1296
1297 // Try going down the event handler chain
1298 if ( GetNextHandler() )
1299 {
1300 if ( GetNextHandler()->ProcessEvent(event) )
1301 return true;
1302 }
1303
1304 // Finally propagate the event upwards the window chain and/or to the
1305 // application object as necessary
1306 return TryParent(event);
1307 }
1308
1309
1310 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1311 {
1312 const wxEventType eventType = event.GetEventType();
1313 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1314 {
1315 const wxEventTableEntry& entry = table.entries[i];
1316 if ( eventType == entry.m_eventType )
1317 {
1318 if ( ProcessEventIfMatches(entry, this, event) )
1319 return true;
1320 }
1321 }
1322
1323 return false;
1324 }
1325
1326 void wxEvtHandler::Connect( int id, int lastId,
1327 int eventType,
1328 wxObjectEventFunction func,
1329 wxObject *userData,
1330 wxEvtHandler* eventSink )
1331 {
1332 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1333 wxEventTableEntry *entry = new wxEventTableEntry;
1334 entry->m_eventType = eventType;
1335 entry->m_id = id;
1336 entry->m_lastId = lastId;
1337 entry->m_fn = func;
1338 entry->m_callbackUserData = userData;
1339 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1340 wxDynamicEventTableEntry *entry =
1341 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1342 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1343
1344 if (!m_dynamicEvents)
1345 m_dynamicEvents = new wxList;
1346
1347 // Insert at the front of the list so most recent additions are found first
1348 m_dynamicEvents->Insert( (wxObject*) entry );
1349 }
1350
1351 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1352 wxObjectEventFunction func,
1353 wxObject *userData,
1354 wxEvtHandler* eventSink )
1355 {
1356 if (!m_dynamicEvents)
1357 return false;
1358
1359 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1360 while (node)
1361 {
1362 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1363 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1364 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1365 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1366 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1367
1368 if ((entry->m_id == id) &&
1369 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1370 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1371 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1372 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1373 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1374 {
1375 if (entry->m_callbackUserData)
1376 delete entry->m_callbackUserData;
1377 m_dynamicEvents->Erase( node );
1378 delete entry;
1379 return true;
1380 }
1381 node = node->GetNext();
1382 }
1383 return false;
1384 }
1385
1386 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1387 {
1388 wxCHECK_MSG( m_dynamicEvents, false,
1389 wxT("caller should check that we have dynamic events") );
1390
1391 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1392 while (node)
1393 {
1394 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1395 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1396 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1397 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1398 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1399
1400 // get next node before (maybe) calling the event handler as it could
1401 // call Disconnect() invalidating the current node
1402 node = node->GetNext();
1403
1404 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1405 {
1406 wxEvtHandler *handler =
1407 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1408 entry->m_eventSink ? entry->m_eventSink
1409 :
1410 #endif
1411 this;
1412
1413 if ( ProcessEventIfMatches(*entry, handler, event) )
1414 {
1415 return true;
1416 }
1417 }
1418 }
1419
1420 return false;
1421 }
1422
1423 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1424 {
1425 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1426 wxT("can't have both object and void client data") );
1427
1428 if ( m_clientObject )
1429 delete m_clientObject;
1430
1431 m_clientObject = data;
1432 m_clientDataType = wxClientData_Object;
1433 }
1434
1435 wxClientData *wxEvtHandler::DoGetClientObject() const
1436 {
1437 // it's not an error to call GetClientObject() on a window which doesn't
1438 // have client data at all - NULL will be returned
1439 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1440 wxT("this window doesn't have object client data") );
1441
1442 return m_clientObject;
1443 }
1444
1445 void wxEvtHandler::DoSetClientData( void *data )
1446 {
1447 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1448 wxT("can't have both object and void client data") );
1449
1450 m_clientData = data;
1451 m_clientDataType = wxClientData_Void;
1452 }
1453
1454 void *wxEvtHandler::DoGetClientData() const
1455 {
1456 // it's not an error to call GetClientData() on a window which doesn't have
1457 // client data at all - NULL will be returned
1458 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1459 wxT("this window doesn't have void client data") );
1460
1461 return m_clientData;
1462 }
1463
1464 #endif // wxUSE_BASE
1465
1466 #if wxUSE_GUI
1467
1468 // Find a window with the focus, that is also a descendant of the given window.
1469 // This is used to determine the window to initially send commands to.
1470 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1471 {
1472 // Process events starting with the window with the focus, if any.
1473 wxWindow* focusWin = wxWindow::FindFocus();
1474 wxWindow* win = focusWin;
1475
1476 // Check if this is a descendant of this frame.
1477 // If not, win will be set to NULL.
1478 while (win)
1479 {
1480 if (win == ancestor)
1481 break;
1482 else
1483 win = win->GetParent();
1484 }
1485 if (win == (wxWindow*) NULL)
1486 focusWin = (wxWindow*) NULL;
1487
1488 return focusWin;
1489 }
1490
1491 #endif // wxUSE_GUI

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