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Corrected wxRTTI for wxNotebook so dynamic casting to wxBookCtrlBase works
[wxWidgets.git] / src / common / event.cpp
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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// ----------------------------------------------------------------------------
49// wxWin macros
50// ----------------------------------------------------------------------------
51
52#if wxUSE_BASE
53 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
54 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
55 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
56#endif // wxUSE_BASE
57
58#if wxUSE_GUI
59 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
60 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
61 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
62 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
63 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
64 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
65 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
66 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
67 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
68 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
95#endif // wxUSE_GUI
96
97#if wxUSE_BASE
98
99const wxEventTable *wxEvtHandler::GetEventTable() const
100 { return &wxEvtHandler::sm_eventTable; }
101
102const wxEventTable wxEvtHandler::sm_eventTable =
103 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
104
105wxEventHashTable &wxEvtHandler::GetEventHashTable() const
106 { return wxEvtHandler::sm_eventHashTable; }
107
108wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
109
110const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
111 { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
112
113
114// wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
115// leaked, so we need to manually clean up all event tables before checking for
116// the memory leaks when using it, however this breaks re-initializing the
117// library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
118// event tables won't be rebuilt the next time, so disable this by default
119#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
120
121class wxEventTableEntryModule: public wxModule
122{
123public:
124 wxEventTableEntryModule() { }
125 virtual bool OnInit() { return true; }
126 virtual void OnExit() { wxEventHashTable::ClearAll(); }
127
128 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
129};
130
131IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
132
133#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
134
135// ----------------------------------------------------------------------------
136// global variables
137// ----------------------------------------------------------------------------
138
139// To put pending event handlers
140wxList *wxPendingEvents = (wxList *)NULL;
141
142#if wxUSE_THREADS
143 // protects wxPendingEvents list
144 wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
145#endif
146
147#if !WXWIN_COMPATIBILITY_EVENT_TYPES
148
149// common event types are defined here, other event types are defined by the
150// components which use them
151
152const wxEventType wxEVT_FIRST = 10000;
153const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
154
155DEFINE_EVENT_TYPE(wxEVT_NULL)
156DEFINE_EVENT_TYPE(wxEVT_IDLE)
157DEFINE_EVENT_TYPE(wxEVT_SOCKET)
158DEFINE_EVENT_TYPE(wxEVT_TIMER)
159
160#endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
161
162#endif // wxUSE_BASE
163
164#if wxUSE_GUI
165
166#if !WXWIN_COMPATIBILITY_EVENT_TYPES
167
168DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
169DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
170DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
171DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
172DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
173DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
174DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
175DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
176DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
177DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
178DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
179DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
180DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
181DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
182DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
183DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
184DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
185
186// Mouse event types
187DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
188DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
189DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
190DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
191DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
192DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
193DEFINE_EVENT_TYPE(wxEVT_MOTION)
194DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
195DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
196DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
197DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
198DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
199DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
200DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
201DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
202DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
203DEFINE_EVENT_TYPE(wxEVT_AUX1_DOWN)
204DEFINE_EVENT_TYPE(wxEVT_AUX1_UP)
205DEFINE_EVENT_TYPE(wxEVT_AUX1_DCLICK)
206DEFINE_EVENT_TYPE(wxEVT_AUX2_DOWN)
207DEFINE_EVENT_TYPE(wxEVT_AUX2_UP)
208DEFINE_EVENT_TYPE(wxEVT_AUX2_DCLICK)
209
210// Non-client mouse events
211DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
212DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
213DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
214DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
215DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
216DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
217DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
218DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
219DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
220DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
221DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
222DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
223
224// Character input event type
225DEFINE_EVENT_TYPE(wxEVT_CHAR)
226DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
227DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
228DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
229DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
230#if wxUSE_HOTKEY
231DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
232#endif
233
234// Set cursor event
235DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
236
237// wxScrollbar and wxSlider event identifiers
238DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
239DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
240DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
241DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
242DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
243DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
244DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
245DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
246DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
247
248// Scroll events from wxWindow
249DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
250DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
251DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
252DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
253DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
254DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
255DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
256DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
257
258// System events
259DEFINE_EVENT_TYPE(wxEVT_SIZE)
260DEFINE_EVENT_TYPE(wxEVT_SIZING)
261DEFINE_EVENT_TYPE(wxEVT_MOVE)
262DEFINE_EVENT_TYPE(wxEVT_MOVING)
263DEFINE_EVENT_TYPE(wxEVT_MOVE_START)
264DEFINE_EVENT_TYPE(wxEVT_MOVE_END)
265DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
266DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
267DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
268DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
269DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
270DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
271DEFINE_EVENT_TYPE(wxEVT_CREATE)
272DEFINE_EVENT_TYPE(wxEVT_DESTROY)
273DEFINE_EVENT_TYPE(wxEVT_SHOW)
274DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
275DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
276DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
277DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
278DEFINE_EVENT_TYPE(wxEVT_PAINT)
279DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
280DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
281DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
282DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
283DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
284DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
285DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
286DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
287DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
288DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
289DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
290DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
291DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
292DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
293DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
294DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
295DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
296DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
297DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
298DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
299DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
300DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
301
302// Clipboard events
303DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
304DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
305DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
306
307// Generic command events
308// Note: a click is a higher-level event than button down/up
309DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
310DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
311DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
312DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
313DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
314DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
315DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
316
317// Help events
318DEFINE_EVENT_TYPE(wxEVT_HELP)
319DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
320
321#endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
322
323#endif // wxUSE_GUI
324
325#if wxUSE_BASE
326
327wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
328
329// ============================================================================
330// implementation
331// ============================================================================
332
333// ----------------------------------------------------------------------------
334// event initialization
335// ----------------------------------------------------------------------------
336
337int wxNewEventType()
338{
339 // MT-FIXME
340 static int s_lastUsedEventType = wxEVT_FIRST;
341
342 return s_lastUsedEventType++;
343}
344
345// ----------------------------------------------------------------------------
346// wxEvent
347// ----------------------------------------------------------------------------
348
349/*
350 * General wxWidgets events, covering
351 * all interesting things that might happen (button clicking, resizing,
352 * setting text in widgets, etc.).
353 *
354 * For each completely new event type, derive a new event class.
355 *
356 */
357
358wxEvent::wxEvent(int theId, wxEventType commandType )
359{
360 m_eventType = commandType;
361 m_eventObject = (wxObject *) NULL;
362 m_timeStamp = 0;
363 m_id = theId;
364 m_skipped = false;
365 m_callbackUserData = (wxObject *) NULL;
366 m_isCommandEvent = false;
367 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
368}
369
370wxEvent::wxEvent(const wxEvent &src)
371 : wxObject(src)
372 , m_eventObject(src.m_eventObject)
373 , m_eventType(src.m_eventType)
374 , m_timeStamp(src.m_timeStamp)
375 , m_id(src.m_id)
376 , m_callbackUserData(src.m_callbackUserData)
377 , m_propagationLevel(src.m_propagationLevel)
378 , m_skipped(src.m_skipped)
379 , m_isCommandEvent(src.m_isCommandEvent)
380{
381}
382
383#endif // wxUSE_BASE
384
385#if wxUSE_GUI
386
387/*
388 * Command events
389 *
390 */
391
392#ifdef __VISUALC__
393 // 'this' : used in base member initializer list (for m_commandString)
394 #pragma warning(disable:4355)
395#endif
396
397wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
398 : wxEvent(theId, commandType)
399{
400 m_clientData = (char *) NULL;
401 m_clientObject = (wxClientData *) NULL;
402 m_extraLong = 0;
403 m_commandInt = 0;
404 m_isCommandEvent = true;
405
406 // the command events are propagated upwards by default
407 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
408}
409
410#ifdef __VISUALC__
411 #pragma warning(default:4355)
412#endif
413
414wxString wxCommandEvent::GetString() const
415{
416 if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
417 return m_cmdString;
418 else
419 {
420#if wxUSE_TEXTCTRL
421 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
422 if(txt)
423 return txt->GetValue();
424 else
425#endif // wxUSE_TEXTCTRL
426 return m_cmdString;
427 }
428}
429
430/*
431 * UI update events
432 */
433
434#if wxUSE_LONGLONG
435wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
436#endif
437
438long wxUpdateUIEvent::sm_updateInterval = 0;
439
440wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
441
442// Can we update?
443bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
444{
445 // Don't update if we've switched global updating off
446 // and this window doesn't support updates.
447 if (win &&
448 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
449 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
450 return false;
451
452 if (sm_updateInterval == -1)
453 return false;
454
455 if (sm_updateInterval == 0)
456 return true;
457
458#if wxUSE_STOPWATCH && wxUSE_LONGLONG
459 wxLongLong now = wxGetLocalTimeMillis();
460 if (now > (sm_lastUpdate + sm_updateInterval))
461 {
462 return true;
463 }
464
465 return false;
466#else
467 // If we don't have wxStopWatch or wxLongLong, we
468 // should err on the safe side and update now anyway.
469 return true;
470#endif
471}
472
473// Reset the update time to provide a delay until the next
474// time we should update
475void wxUpdateUIEvent::ResetUpdateTime()
476{
477#if wxUSE_STOPWATCH && wxUSE_LONGLONG
478 if (sm_updateInterval > 0)
479 {
480 wxLongLong now = wxGetLocalTimeMillis();
481 if (now > (sm_lastUpdate + sm_updateInterval))
482 {
483 sm_lastUpdate = now;
484 }
485 }
486#endif
487}
488
489/*
490 * Scroll events
491 */
492
493wxScrollEvent::wxScrollEvent(wxEventType commandType,
494 int id,
495 int pos,
496 int orient)
497 : wxCommandEvent(commandType, id)
498{
499 m_extraLong = orient;
500 m_commandInt = pos;
501}
502
503/*
504 * ScrollWin events
505 */
506
507wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
508 int pos,
509 int orient)
510{
511 m_eventType = commandType;
512 m_extraLong = orient;
513 m_commandInt = pos;
514}
515
516/*
517 * Mouse events
518 *
519 */
520
521wxMouseEvent::wxMouseEvent(wxEventType commandType)
522{
523 m_eventType = commandType;
524
525 m_x = 0;
526 m_y = 0;
527
528 m_leftDown = false;
529 m_middleDown = false;
530 m_rightDown = false;
531 m_aux1Down = false;
532 m_aux2Down = false;
533
534 m_controlDown = false;
535 m_shiftDown = false;
536 m_altDown = false;
537 m_metaDown = false;
538
539 m_clickCount = -1;
540
541 m_wheelRotation = 0;
542 m_wheelDelta = 0;
543 m_linesPerAction = 0;
544 m_wheelAxis = 0;
545}
546
547void wxMouseEvent::Assign(const wxMouseEvent& event)
548{
549 m_eventType = event.m_eventType;
550
551 m_x = event.m_x;
552 m_y = event.m_y;
553
554 m_leftDown = event.m_leftDown;
555 m_middleDown = event.m_middleDown;
556 m_rightDown = event.m_rightDown;
557 m_aux1Down = event.m_aux1Down;
558 m_aux2Down = event.m_aux2Down;
559
560 m_controlDown = event.m_controlDown;
561 m_shiftDown = event.m_shiftDown;
562 m_altDown = event.m_altDown;
563 m_metaDown = event.m_metaDown;
564
565 m_wheelRotation = event.m_wheelRotation;
566 m_wheelDelta = event.m_wheelDelta;
567 m_linesPerAction = event.m_linesPerAction;
568 m_wheelAxis = event.m_wheelAxis;
569}
570
571// return true if was a button dclick event
572bool wxMouseEvent::ButtonDClick(int but) const
573{
574 switch (but)
575 {
576 default:
577 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
578 // fall through
579
580 case wxMOUSE_BTN_ANY:
581 return (LeftDClick() || MiddleDClick() || RightDClick() ||
582 Aux1DClick() || Aux2DClick());
583
584 case wxMOUSE_BTN_LEFT:
585 return LeftDClick();
586
587 case wxMOUSE_BTN_MIDDLE:
588 return MiddleDClick();
589
590 case wxMOUSE_BTN_RIGHT:
591 return RightDClick();
592
593 case wxMOUSE_BTN_AUX1:
594 return Aux1DClick();
595
596 case wxMOUSE_BTN_AUX2:
597 return Aux2DClick();
598 }
599}
600
601// return true if was a button down event
602bool wxMouseEvent::ButtonDown(int but) const
603{
604 switch (but)
605 {
606 default:
607 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
608 // fall through
609
610 case wxMOUSE_BTN_ANY:
611 return (LeftDown() || MiddleDown() || RightDown() ||
612 Aux1Down() || Aux2Down());
613
614 case wxMOUSE_BTN_LEFT:
615 return LeftDown();
616
617 case wxMOUSE_BTN_MIDDLE:
618 return MiddleDown();
619
620 case wxMOUSE_BTN_RIGHT:
621 return RightDown();
622
623 case wxMOUSE_BTN_AUX1:
624 return Aux1Down();
625
626 case wxMOUSE_BTN_AUX2:
627 return Aux2Down();
628 }
629}
630
631// return true if was a button up event
632bool wxMouseEvent::ButtonUp(int but) const
633{
634 switch (but)
635 {
636 default:
637 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
638 // fall through
639
640 case wxMOUSE_BTN_ANY:
641 return (LeftUp() || MiddleUp() || RightUp() ||
642 Aux1Up() || Aux2Up());
643
644 case wxMOUSE_BTN_LEFT:
645 return LeftUp();
646
647 case wxMOUSE_BTN_MIDDLE:
648 return MiddleUp();
649
650 case wxMOUSE_BTN_RIGHT:
651 return RightUp();
652
653 case wxMOUSE_BTN_AUX1:
654 return Aux1Up();
655
656 case wxMOUSE_BTN_AUX2:
657 return Aux2Up();
658 }
659}
660
661// return true if the given button is currently changing state
662bool wxMouseEvent::Button(int but) const
663{
664 switch (but)
665 {
666 default:
667 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
668 // fall through
669
670 case wxMOUSE_BTN_ANY:
671 return ButtonUp(wxMOUSE_BTN_ANY) ||
672 ButtonDown(wxMOUSE_BTN_ANY) ||
673 ButtonDClick(wxMOUSE_BTN_ANY);
674
675 case wxMOUSE_BTN_LEFT:
676 return LeftDown() || LeftUp() || LeftDClick();
677
678 case wxMOUSE_BTN_MIDDLE:
679 return MiddleDown() || MiddleUp() || MiddleDClick();
680
681 case wxMOUSE_BTN_RIGHT:
682 return RightDown() || RightUp() || RightDClick();
683
684 case wxMOUSE_BTN_AUX1:
685 return Aux1Down() || Aux1Up() || Aux1DClick();
686
687 case wxMOUSE_BTN_AUX2:
688 return Aux2Down() || Aux2Up() || Aux2DClick();
689 }
690}
691
692bool wxMouseEvent::ButtonIsDown(int but) const
693{
694 switch (but)
695 {
696 default:
697 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
698 // fall through
699
700 case wxMOUSE_BTN_ANY:
701 return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down();
702
703 case wxMOUSE_BTN_LEFT:
704 return LeftIsDown();
705
706 case wxMOUSE_BTN_MIDDLE:
707 return MiddleIsDown();
708
709 case wxMOUSE_BTN_RIGHT:
710 return RightIsDown();
711
712 case wxMOUSE_BTN_AUX1:
713 return Aux1IsDown();
714
715 case wxMOUSE_BTN_AUX2:
716 return Aux2IsDown();
717 }
718}
719
720int wxMouseEvent::GetButton() const
721{
722 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
723 {
724 if ( Button(i) )
725 {
726 return i;
727 }
728 }
729
730 return wxMOUSE_BTN_NONE;
731}
732
733// Find the logical position of the event given the DC
734wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
735{
736 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
737 return pt;
738}
739
740
741/*
742 * Keyboard event
743 *
744 */
745
746wxKeyEvent::wxKeyEvent(wxEventType type)
747{
748 m_eventType = type;
749 m_shiftDown = false;
750 m_controlDown = false;
751 m_metaDown = false;
752 m_altDown = false;
753 m_keyCode = 0;
754 m_scanCode = 0;
755#if wxUSE_UNICODE
756 m_uniChar = 0;
757#endif
758}
759
760wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
761 : wxEvent(evt)
762{
763 m_x = evt.m_x;
764 m_y = evt.m_y;
765
766 m_keyCode = evt.m_keyCode;
767
768 m_controlDown = evt.m_controlDown;
769 m_shiftDown = evt.m_shiftDown;
770 m_altDown = evt.m_altDown;
771 m_metaDown = evt.m_metaDown;
772 m_scanCode = evt.m_scanCode;
773 m_rawCode = evt.m_rawCode;
774 m_rawFlags = evt.m_rawFlags;
775
776#if wxUSE_UNICODE
777 m_uniChar = evt.m_uniChar;
778#endif
779}
780
781#if WXWIN_COMPATIBILITY_2_6
782long wxKeyEvent::KeyCode() const
783{
784 return m_keyCode;
785}
786#endif // WXWIN_COMPATIBILITY_2_6
787
788wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
789{
790 SetEventType(wxEVT_CREATE);
791 SetEventObject(win);
792}
793
794wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
795{
796 SetEventType(wxEVT_DESTROY);
797 SetEventObject(win);
798}
799
800wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
801 : wxCommandEvent(wxEVT_CHILD_FOCUS)
802{
803 SetEventObject(win);
804}
805
806// ----------------------------------------------------------------------------
807// wxHelpEvent
808// ----------------------------------------------------------------------------
809
810/* static */
811wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
812{
813 if ( origin == Origin_Unknown )
814 {
815 // assume that the event comes from the help button if it's not from
816 // keyboard and that pressing F1 always results in the help event
817 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
818 }
819
820 return origin;
821}
822
823#endif // wxUSE_GUI
824
825
826#if wxUSE_BASE
827
828// ----------------------------------------------------------------------------
829// wxEventHashTable
830// ----------------------------------------------------------------------------
831
832static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
833
834wxEventHashTable* wxEventHashTable::sm_first = NULL;
835
836wxEventHashTable::wxEventHashTable(const wxEventTable &table)
837 : m_table(table),
838 m_rebuildHash(true)
839{
840 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
841
842 m_next = sm_first;
843 if (m_next)
844 m_next->m_previous = this;
845 sm_first = this;
846}
847
848wxEventHashTable::~wxEventHashTable()
849{
850 if (m_next)
851 m_next->m_previous = m_previous;
852 if (m_previous)
853 m_previous->m_next = m_next;
854 if (sm_first == this)
855 sm_first = m_next;
856
857 Clear();
858}
859
860void wxEventHashTable::Clear()
861{
862 for ( size_t i = 0; i < m_size; i++ )
863 {
864 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
865 delete eTTnode;
866 }
867
868 delete[] m_eventTypeTable;
869 m_eventTypeTable = NULL;
870
871 m_size = 0;
872}
873
874#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
875
876// Clear all tables
877void wxEventHashTable::ClearAll()
878{
879 wxEventHashTable* table = sm_first;
880 while (table)
881 {
882 table->Clear();
883 table = table->m_next;
884 }
885}
886
887#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
888
889bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
890{
891 if (m_rebuildHash)
892 {
893 InitHashTable();
894 m_rebuildHash = false;
895 }
896
897 if (!m_eventTypeTable)
898 return false;
899
900 // Find all entries for the given event type.
901 wxEventType eventType = event.GetEventType();
902 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
903 if (eTTnode && eTTnode->eventType == eventType)
904 {
905 // Now start the search for an event handler
906 // that can handle an event with the given ID.
907 const wxEventTableEntryPointerArray&
908 eventEntryTable = eTTnode->eventEntryTable;
909
910 const size_t count = eventEntryTable.GetCount();
911 for (size_t n = 0; n < count; n++)
912 {
913 if ( wxEvtHandler::
914 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
915 {
916 return true;
917 }
918 }
919 }
920
921 return false;
922}
923
924void wxEventHashTable::InitHashTable()
925{
926 // Loop over the event tables and all its base tables.
927 const wxEventTable *table = &m_table;
928 while (table)
929 {
930 // Retrieve all valid event handler entries
931 const wxEventTableEntry *entry = table->entries;
932 while (entry->m_fn != 0)
933 {
934 // Add the event entry in the Hash.
935 AddEntry(*entry);
936
937 entry++;
938 }
939
940 table = table->baseTable;
941 }
942
943 // Lets free some memory.
944 size_t i;
945 for(i = 0; i < m_size; i++)
946 {
947 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
948 if (eTTnode)
949 {
950 eTTnode->eventEntryTable.Shrink();
951 }
952 }
953}
954
955void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
956{
957 // This might happen 'accidentally' as the app is exiting
958 if (!m_eventTypeTable)
959 return;
960
961 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
962 EventTypeTablePointer eTTnode = *peTTnode;
963
964 if (eTTnode)
965 {
966 if (eTTnode->eventType != entry.m_eventType)
967 {
968 // Resize the table!
969 GrowEventTypeTable();
970 // Try again to add it.
971 AddEntry(entry);
972 return;
973 }
974 }
975 else
976 {
977 eTTnode = new EventTypeTable;
978 eTTnode->eventType = entry.m_eventType;
979 *peTTnode = eTTnode;
980 }
981
982 // Fill all hash entries between entry.m_id and entry.m_lastId...
983 eTTnode->eventEntryTable.Add(&entry);
984}
985
986void wxEventHashTable::AllocEventTypeTable(size_t size)
987{
988 m_eventTypeTable = new EventTypeTablePointer[size];
989 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
990 m_size = size;
991}
992
993void wxEventHashTable::GrowEventTypeTable()
994{
995 size_t oldSize = m_size;
996 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
997
998 // TODO: Search the most optimal grow sequence
999 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
1000
1001 for ( size_t i = 0; i < oldSize; /* */ )
1002 {
1003 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
1004 if (eTToldNode)
1005 {
1006 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1007 EventTypeTablePointer eTTnode = *peTTnode;
1008
1009 // Check for collision, we don't want any.
1010 if (eTTnode)
1011 {
1012 GrowEventTypeTable();
1013 continue; // Don't increment the counter,
1014 // as we still need to add this element.
1015 }
1016 else
1017 {
1018 // Get the old value and put it in the new table.
1019 *peTTnode = oldEventTypeTable[i];
1020 }
1021 }
1022
1023 i++;
1024 }
1025
1026 delete[] oldEventTypeTable;
1027}
1028
1029
1030// ----------------------------------------------------------------------------
1031// wxEvtHandler
1032// ----------------------------------------------------------------------------
1033
1034/*
1035 * Event handler
1036 */
1037
1038wxEvtHandler::wxEvtHandler()
1039{
1040 m_nextHandler = (wxEvtHandler *) NULL;
1041 m_previousHandler = (wxEvtHandler *) NULL;
1042 m_enabled = true;
1043 m_dynamicEvents = (wxList *) NULL;
1044 m_pendingEvents = (wxList *) NULL;
1045#if wxUSE_THREADS
1046# if !defined(__VISAGECPP__)
1047 m_eventsLocker = new wxCriticalSection;
1048# endif
1049#endif
1050
1051 // no client data (yet)
1052 m_clientData = NULL;
1053 m_clientDataType = wxClientData_None;
1054}
1055
1056wxEvtHandler::~wxEvtHandler()
1057{
1058 // Takes itself out of the list of handlers
1059 if (m_previousHandler)
1060 m_previousHandler->m_nextHandler = m_nextHandler;
1061
1062 if (m_nextHandler)
1063 m_nextHandler->m_previousHandler = m_previousHandler;
1064
1065 if (m_dynamicEvents)
1066 {
1067 for ( wxList::iterator it = m_dynamicEvents->begin(),
1068 end = m_dynamicEvents->end();
1069 it != end;
1070 ++it )
1071 {
1072#if WXWIN_COMPATIBILITY_EVENT_TYPES
1073 wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1074#else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1075 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1076#endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
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#if wxUSE_THREADS
1090# if !defined(__VISAGECPP__)
1091 delete m_eventsLocker;
1092# endif
1093
1094 // Remove us from wxPendingEvents if necessary.
1095 if(wxPendingEventsLocker)
1096 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1097 if ( wxPendingEvents )
1098 {
1099 // Delete all occurences of this from the list of pending events
1100 while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1101 }
1102 if(wxPendingEventsLocker)
1103 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1104#endif
1105
1106 // we only delete object data, not untyped
1107 if ( m_clientDataType == wxClientData_Object )
1108 delete m_clientObject;
1109}
1110
1111#if wxUSE_THREADS
1112
1113bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1114{
1115 // check that we are really in a child thread
1116 wxASSERT_MSG( !wxThread::IsMain(),
1117 wxT("use ProcessEvent() in main thread") );
1118
1119 AddPendingEvent(event);
1120
1121 return true;
1122}
1123
1124void wxEvtHandler::ClearEventLocker()
1125{
1126#if !defined(__VISAGECPP__)
1127 delete m_eventsLocker;
1128 m_eventsLocker = NULL;
1129#endif
1130}
1131
1132#endif // wxUSE_THREADS
1133
1134void wxEvtHandler::AddPendingEvent(const wxEvent& event)
1135{
1136 // 1) Add event to list of pending events of this event handler
1137
1138 wxEvent *eventCopy = event.Clone();
1139
1140 // we must be able to copy the events here so the event class must
1141 // implement Clone() properly instead of just providing a NULL stab for it
1142 wxCHECK_RET( eventCopy,
1143 _T("events of this type aren't supposed to be posted") );
1144
1145 wxENTER_CRIT_SECT( Lock() );
1146
1147 if ( !m_pendingEvents )
1148 m_pendingEvents = new wxList;
1149
1150 m_pendingEvents->Append(eventCopy);
1151
1152 wxLEAVE_CRIT_SECT( Lock() );
1153
1154 // 2) Add this event handler to list of event handlers that
1155 // have pending events.
1156
1157 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1158
1159 if ( !wxPendingEvents )
1160 wxPendingEvents = new wxList;
1161 wxPendingEvents->Append(this);
1162
1163 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1164
1165 // 3) Inform the system that new pending events are somewhere,
1166 // and that these should be processed in idle time.
1167 wxWakeUpIdle();
1168}
1169
1170void wxEvtHandler::ProcessPendingEvents()
1171{
1172 // this method is only called by wxApp if this handler does have
1173 // pending events
1174 wxCHECK_RET( m_pendingEvents,
1175 wxT("Please call wxApp::ProcessPendingEvents() instead") );
1176
1177 wxENTER_CRIT_SECT( Lock() );
1178
1179 // we leave the loop once we have processed all events that were present at
1180 // the start of ProcessPendingEvents because otherwise we could get into
1181 // infinite loop if the pending event handler execution resulted in another
1182 // event being posted
1183 size_t n = m_pendingEvents->size();
1184 for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1185 node;
1186 node = m_pendingEvents->GetFirst() )
1187 {
1188 wxEvent *event = (wxEvent *)node->GetData();
1189
1190 // It's importan we remove event from list before processing it.
1191 // Else a nested event loop, for example from a modal dialog, might
1192 // process the same event again.
1193
1194 m_pendingEvents->Erase(node);
1195
1196 wxLEAVE_CRIT_SECT( Lock() );
1197
1198 ProcessEvent(*event);
1199
1200 delete event;
1201
1202 wxENTER_CRIT_SECT( Lock() );
1203
1204 if ( --n == 0 )
1205 break;
1206 }
1207
1208 wxLEAVE_CRIT_SECT( Lock() );
1209}
1210
1211/*
1212 * Event table stuff
1213 */
1214/* static */ bool
1215wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1216 wxEvtHandler *handler,
1217 wxEvent& event)
1218{
1219 int tableId1 = entry.m_id,
1220 tableId2 = entry.m_lastId;
1221
1222 // match only if the event type is the same and the id is either -1 in
1223 // the event table (meaning "any") or the event id matches the id
1224 // specified in the event table either exactly or by falling into
1225 // range between first and last
1226 if ((tableId1 == wxID_ANY) ||
1227 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1228 (tableId2 != wxID_ANY &&
1229 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1230 {
1231 event.Skip(false);
1232 event.m_callbackUserData = entry.m_callbackUserData;
1233
1234#if wxUSE_EXCEPTIONS
1235 if ( wxTheApp )
1236 {
1237 // call the handler via wxApp method which allows the user to catch
1238 // any exceptions which may be thrown by any handler in the program
1239 // in one place
1240 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1241 }
1242 else
1243#endif // wxUSE_EXCEPTIONS
1244 {
1245 // no need for an extra virtual function call
1246 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1247 }
1248
1249 if (!event.GetSkipped())
1250 return true;
1251 }
1252
1253 return false;
1254}
1255
1256bool wxEvtHandler::TryParent(wxEvent& event)
1257{
1258 if ( wxTheApp && (this != wxTheApp) )
1259 {
1260 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1261 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1262 // processed appropriately via SearchEventTable.
1263 if ( event.GetEventType() != wxEVT_IDLE )
1264 {
1265 if ( wxTheApp->ProcessEvent(event) )
1266 return true;
1267 }
1268 }
1269
1270 return false;
1271}
1272
1273bool wxEvtHandler::ProcessEvent(wxEvent& event)
1274{
1275 // allow the application to hook into event processing
1276 if ( wxTheApp )
1277 {
1278 int rc = wxTheApp->FilterEvent(event);
1279 if ( rc != -1 )
1280 {
1281 wxASSERT_MSG( rc == 1 || rc == 0,
1282 _T("unexpected wxApp::FilterEvent return value") );
1283
1284 return rc != 0;
1285 }
1286 //else: proceed normally
1287 }
1288
1289 // An event handler can be enabled or disabled
1290 if ( GetEvtHandlerEnabled() )
1291 {
1292 // if we have a validator, it has higher priority than our own event
1293 // table
1294 if ( TryValidator(event) )
1295 return true;
1296
1297 // Handle per-instance dynamic event tables first
1298 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1299 return true;
1300
1301 // Then static per-class event tables
1302 if ( GetEventHashTable().HandleEvent(event, this) )
1303 return true;
1304 }
1305
1306 // Try going down the event handler chain
1307 if ( GetNextHandler() )
1308 {
1309 // notice that we shouldn't let the parent have the event even if the
1310 // next handler does not process it because it will have already passed
1311 // it to the parent in this case
1312 return GetNextHandler()->ProcessEvent(event);
1313 }
1314
1315 // Finally propagate the event upwards the window chain and/or to the
1316 // application object as necessary
1317 return TryParent(event);
1318}
1319
1320bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1321{
1322#if wxUSE_EXCEPTIONS
1323 try
1324 {
1325#endif
1326 return ProcessEvent(event);
1327#if wxUSE_EXCEPTIONS
1328 }
1329 catch ( ... )
1330 {
1331 wxEventLoopBase *loop = wxEventLoopBase::GetActive();
1332 try
1333 {
1334 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1335 {
1336 if ( loop )
1337 loop->Exit();
1338 }
1339 //else: continue running current event loop
1340
1341 return false;
1342 }
1343 catch ( ... )
1344 {
1345 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1346 // exception again: very good, but we still need Exit() to
1347 // be called
1348 if ( loop )
1349 loop->Exit();
1350 throw;
1351 }
1352 }
1353#endif // wxUSE_EXCEPTIONS
1354}
1355
1356
1357bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1358{
1359 const wxEventType eventType = event.GetEventType();
1360 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1361 {
1362 const wxEventTableEntry& entry = table.entries[i];
1363 if ( eventType == entry.m_eventType )
1364 {
1365 if ( ProcessEventIfMatches(entry, this, event) )
1366 return true;
1367 }
1368 }
1369
1370 return false;
1371}
1372
1373void wxEvtHandler::Connect( int id, int lastId,
1374 int eventType,
1375 wxObjectEventFunction func,
1376 wxObject *userData,
1377 wxEvtHandler* eventSink )
1378{
1379#if WXWIN_COMPATIBILITY_EVENT_TYPES
1380 wxEventTableEntry *entry = new wxEventTableEntry;
1381 entry->m_eventType = eventType;
1382 entry->m_id = id;
1383 entry->m_lastId = lastId;
1384 entry->m_fn = func;
1385 entry->m_callbackUserData = userData;
1386#else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1387 wxDynamicEventTableEntry *entry =
1388 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1389#endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1390
1391 if (!m_dynamicEvents)
1392 m_dynamicEvents = new wxList;
1393
1394 // Insert at the front of the list so most recent additions are found first
1395 m_dynamicEvents->Insert( (wxObject*) entry );
1396}
1397
1398bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1399 wxObjectEventFunction func,
1400 wxObject *userData,
1401 wxEvtHandler* eventSink )
1402{
1403 if (!m_dynamicEvents)
1404 return false;
1405
1406 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1407 while (node)
1408 {
1409#if WXWIN_COMPATIBILITY_EVENT_TYPES
1410 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1411#else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1412 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1413#endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1414
1415 if ((entry->m_id == id) &&
1416 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1417 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1418 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1419 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1420 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1421 {
1422 if (entry->m_callbackUserData)
1423 delete entry->m_callbackUserData;
1424 m_dynamicEvents->Erase( node );
1425 delete entry;
1426 return true;
1427 }
1428 node = node->GetNext();
1429 }
1430 return false;
1431}
1432
1433bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1434{
1435 wxCHECK_MSG( m_dynamicEvents, false,
1436 wxT("caller should check that we have dynamic events") );
1437
1438 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1439 while (node)
1440 {
1441#if WXWIN_COMPATIBILITY_EVENT_TYPES
1442 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1443#else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1444 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1445#endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1446
1447 // get next node before (maybe) calling the event handler as it could
1448 // call Disconnect() invalidating the current node
1449 node = node->GetNext();
1450
1451 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1452 {
1453 wxEvtHandler *handler =
1454#if !WXWIN_COMPATIBILITY_EVENT_TYPES
1455 entry->m_eventSink ? entry->m_eventSink
1456 :
1457#endif
1458 this;
1459
1460 if ( ProcessEventIfMatches(*entry, handler, event) )
1461 {
1462 return true;
1463 }
1464 }
1465 }
1466
1467 return false;
1468}
1469
1470void wxEvtHandler::DoSetClientObject( wxClientData *data )
1471{
1472 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1473 wxT("can't have both object and void client data") );
1474
1475 if ( m_clientObject )
1476 delete m_clientObject;
1477
1478 m_clientObject = data;
1479 m_clientDataType = wxClientData_Object;
1480}
1481
1482wxClientData *wxEvtHandler::DoGetClientObject() const
1483{
1484 // it's not an error to call GetClientObject() on a window which doesn't
1485 // have client data at all - NULL will be returned
1486 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1487 wxT("this window doesn't have object client data") );
1488
1489 return m_clientObject;
1490}
1491
1492void wxEvtHandler::DoSetClientData( void *data )
1493{
1494 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1495 wxT("can't have both object and void client data") );
1496
1497 m_clientData = data;
1498 m_clientDataType = wxClientData_Void;
1499}
1500
1501void *wxEvtHandler::DoGetClientData() const
1502{
1503 // it's not an error to call GetClientData() on a window which doesn't have
1504 // client data at all - NULL will be returned
1505 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1506 wxT("this window doesn't have void client data") );
1507
1508 return m_clientData;
1509}
1510
1511#endif // wxUSE_BASE
1512
1513#if wxUSE_GUI
1514
1515// Find a window with the focus, that is also a descendant of the given window.
1516// This is used to determine the window to initially send commands to.
1517wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1518{
1519 // Process events starting with the window with the focus, if any.
1520 wxWindow* focusWin = wxWindow::FindFocus();
1521 wxWindow* win = focusWin;
1522
1523 // Check if this is a descendant of this frame.
1524 // If not, win will be set to NULL.
1525 while (win)
1526 {
1527 if (win == ancestor)
1528 break;
1529 else
1530 win = win->GetParent();
1531 }
1532 if (win == (wxWindow*) NULL)
1533 focusWin = (wxWindow*) NULL;
1534
1535 return focusWin;
1536}
1537
1538// ----------------------------------------------------------------------------
1539// wxEventBlocker
1540// ----------------------------------------------------------------------------
1541
1542wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1543{
1544 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1545
1546 m_window = win;
1547
1548 Block(type);
1549 m_window->PushEventHandler(this);
1550}
1551
1552wxEventBlocker::~wxEventBlocker()
1553{
1554 wxEvtHandler *popped = m_window->PopEventHandler(false);
1555 wxCHECK_RET(popped == this,
1556 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1557}
1558
1559bool wxEventBlocker::ProcessEvent(wxEvent& event)
1560{
1561 // should this event be blocked?
1562 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1563 {
1564 wxEventType t = (wxEventType)m_eventsToBlock[i];
1565 if ( t == wxEVT_ANY || t == event.GetEventType() )
1566 return true; // yes, it should: mark this event as processed
1567 }
1568
1569 return false;
1570}
1571
1572#endif // wxUSE_GUI
wxWidgets (Impactor)