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