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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
565 // Borland C++ 5.82 doesn't compile an explicit call to an implicitly
566 // defined operator=() so need to do it this way:
567 *static_cast<wxMouseState *>(this) = event;
568
569 m_x = event.m_x;
570 m_y = event.m_y;
571
572 m_leftDown = event.m_leftDown;
573 m_middleDown = event.m_middleDown;
574 m_rightDown = event.m_rightDown;
575 m_aux1Down = event.m_aux1Down;
576 m_aux2Down = event.m_aux2Down;
577
578 m_wheelRotation = event.m_wheelRotation;
579 m_wheelDelta = event.m_wheelDelta;
580 m_linesPerAction = event.m_linesPerAction;
581 m_wheelAxis = event.m_wheelAxis;
582}
583
584// return true if was a button dclick event
585bool wxMouseEvent::ButtonDClick(int but) const
586{
587 switch (but)
588 {
589 default:
590 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
591 // fall through
592
593 case wxMOUSE_BTN_ANY:
594 return (LeftDClick() || MiddleDClick() || RightDClick() ||
595 Aux1DClick() || Aux2DClick());
596
597 case wxMOUSE_BTN_LEFT:
598 return LeftDClick();
599
600 case wxMOUSE_BTN_MIDDLE:
601 return MiddleDClick();
602
603 case wxMOUSE_BTN_RIGHT:
604 return RightDClick();
605
606 case wxMOUSE_BTN_AUX1:
607 return Aux1DClick();
608
609 case wxMOUSE_BTN_AUX2:
610 return Aux2DClick();
611 }
612}
613
614// return true if was a button down event
615bool wxMouseEvent::ButtonDown(int but) const
616{
617 switch (but)
618 {
619 default:
620 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
621 // fall through
622
623 case wxMOUSE_BTN_ANY:
624 return (LeftDown() || MiddleDown() || RightDown() ||
625 Aux1Down() || Aux2Down());
626
627 case wxMOUSE_BTN_LEFT:
628 return LeftDown();
629
630 case wxMOUSE_BTN_MIDDLE:
631 return MiddleDown();
632
633 case wxMOUSE_BTN_RIGHT:
634 return RightDown();
635
636 case wxMOUSE_BTN_AUX1:
637 return Aux1Down();
638
639 case wxMOUSE_BTN_AUX2:
640 return Aux2Down();
641 }
642}
643
644// return true if was a button up event
645bool wxMouseEvent::ButtonUp(int but) const
646{
647 switch (but)
648 {
649 default:
650 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
651 // fall through
652
653 case wxMOUSE_BTN_ANY:
654 return (LeftUp() || MiddleUp() || RightUp() ||
655 Aux1Up() || Aux2Up());
656
657 case wxMOUSE_BTN_LEFT:
658 return LeftUp();
659
660 case wxMOUSE_BTN_MIDDLE:
661 return MiddleUp();
662
663 case wxMOUSE_BTN_RIGHT:
664 return RightUp();
665
666 case wxMOUSE_BTN_AUX1:
667 return Aux1Up();
668
669 case wxMOUSE_BTN_AUX2:
670 return Aux2Up();
671 }
672}
673
674// return true if the given button is currently changing state
675bool wxMouseEvent::Button(int but) const
676{
677 switch (but)
678 {
679 default:
680 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
681 // fall through
682
683 case wxMOUSE_BTN_ANY:
684 return ButtonUp(wxMOUSE_BTN_ANY) ||
685 ButtonDown(wxMOUSE_BTN_ANY) ||
686 ButtonDClick(wxMOUSE_BTN_ANY);
687
688 case wxMOUSE_BTN_LEFT:
689 return LeftDown() || LeftUp() || LeftDClick();
690
691 case wxMOUSE_BTN_MIDDLE:
692 return MiddleDown() || MiddleUp() || MiddleDClick();
693
694 case wxMOUSE_BTN_RIGHT:
695 return RightDown() || RightUp() || RightDClick();
696
697 case wxMOUSE_BTN_AUX1:
698 return Aux1Down() || Aux1Up() || Aux1DClick();
699
700 case wxMOUSE_BTN_AUX2:
701 return Aux2Down() || Aux2Up() || Aux2DClick();
702 }
703}
704
705bool wxMouseEvent::ButtonIsDown(int but) const
706{
707 switch (but)
708 {
709 default:
710 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
711 // fall through
712
713 case wxMOUSE_BTN_ANY:
714 return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down();
715
716 case wxMOUSE_BTN_LEFT:
717 return LeftIsDown();
718
719 case wxMOUSE_BTN_MIDDLE:
720 return MiddleIsDown();
721
722 case wxMOUSE_BTN_RIGHT:
723 return RightIsDown();
724
725 case wxMOUSE_BTN_AUX1:
726 return Aux1IsDown();
727
728 case wxMOUSE_BTN_AUX2:
729 return Aux2IsDown();
730 }
731}
732
733int wxMouseEvent::GetButton() const
734{
735 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
736 {
737 if ( Button(i) )
738 {
739 return i;
740 }
741 }
742
743 return wxMOUSE_BTN_NONE;
744}
745
746// Find the logical position of the event given the DC
747wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
748{
749 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
750 return pt;
751}
752
753
754/*
755 * Keyboard event
756 *
757 */
758
759wxKeyEvent::wxKeyEvent(wxEventType type)
760{
761 m_eventType = type;
762 m_keyCode = 0;
763 m_scanCode = 0;
764#if wxUSE_UNICODE
765 m_uniChar = 0;
766#endif
767}
768
769wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
770 : wxEvent(evt),
771 wxKeyboardState(evt)
772{
773 m_x = evt.m_x;
774 m_y = evt.m_y;
775
776 m_keyCode = evt.m_keyCode;
777
778 m_scanCode = evt.m_scanCode;
779 m_rawCode = evt.m_rawCode;
780 m_rawFlags = evt.m_rawFlags;
781
782#if wxUSE_UNICODE
783 m_uniChar = evt.m_uniChar;
784#endif
785}
786
787wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
788{
789 SetEventType(wxEVT_CREATE);
790 SetEventObject(win);
791}
792
793wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
794{
795 SetEventType(wxEVT_DESTROY);
796 SetEventObject(win);
797}
798
799wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
800 : wxCommandEvent(wxEVT_CHILD_FOCUS)
801{
802 SetEventObject(win);
803}
804
805// ----------------------------------------------------------------------------
806// wxHelpEvent
807// ----------------------------------------------------------------------------
808
809/* static */
810wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
811{
812 if ( origin == Origin_Unknown )
813 {
814 // assume that the event comes from the help button if it's not from
815 // keyboard and that pressing F1 always results in the help event
816 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
817 }
818
819 return origin;
820}
821
822#endif // wxUSE_GUI
823
824
825#if wxUSE_BASE
826
827// ----------------------------------------------------------------------------
828// wxEventHashTable
829// ----------------------------------------------------------------------------
830
831static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
832
833wxEventHashTable* wxEventHashTable::sm_first = NULL;
834
835wxEventHashTable::wxEventHashTable(const wxEventTable &table)
836 : m_table(table),
837 m_rebuildHash(true)
838{
839 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
840
841 m_next = sm_first;
842 if (m_next)
843 m_next->m_previous = this;
844 sm_first = this;
845}
846
847wxEventHashTable::~wxEventHashTable()
848{
849 if (m_next)
850 m_next->m_previous = m_previous;
851 if (m_previous)
852 m_previous->m_next = m_next;
853 if (sm_first == this)
854 sm_first = m_next;
855
856 Clear();
857}
858
859void wxEventHashTable::Clear()
860{
861 for ( size_t i = 0; i < m_size; i++ )
862 {
863 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
864 delete eTTnode;
865 }
866
867 delete[] m_eventTypeTable;
868 m_eventTypeTable = NULL;
869
870 m_size = 0;
871}
872
873#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
874
875// Clear all tables
876void wxEventHashTable::ClearAll()
877{
878 wxEventHashTable* table = sm_first;
879 while (table)
880 {
881 table->Clear();
882 table = table->m_next;
883 }
884}
885
886#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
887
888bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
889{
890 if (m_rebuildHash)
891 {
892 InitHashTable();
893 m_rebuildHash = false;
894 }
895
896 if (!m_eventTypeTable)
897 return false;
898
899 // Find all entries for the given event type.
900 wxEventType eventType = event.GetEventType();
901 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
902 if (eTTnode && eTTnode->eventType == eventType)
903 {
904 // Now start the search for an event handler
905 // that can handle an event with the given ID.
906 const wxEventTableEntryPointerArray&
907 eventEntryTable = eTTnode->eventEntryTable;
908
909 const size_t count = eventEntryTable.GetCount();
910 for (size_t n = 0; n < count; n++)
911 {
912 if ( wxEvtHandler::
913 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
914 {
915 return true;
916 }
917 }
918 }
919
920 return false;
921}
922
923void wxEventHashTable::InitHashTable()
924{
925 // Loop over the event tables and all its base tables.
926 const wxEventTable *table = &m_table;
927 while (table)
928 {
929 // Retrieve all valid event handler entries
930 const wxEventTableEntry *entry = table->entries;
931 while (entry->m_fn != 0)
932 {
933 // Add the event entry in the Hash.
934 AddEntry(*entry);
935
936 entry++;
937 }
938
939 table = table->baseTable;
940 }
941
942 // Lets free some memory.
943 size_t i;
944 for(i = 0; i < m_size; i++)
945 {
946 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
947 if (eTTnode)
948 {
949 eTTnode->eventEntryTable.Shrink();
950 }
951 }
952}
953
954void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
955{
956 // This might happen 'accidentally' as the app is exiting
957 if (!m_eventTypeTable)
958 return;
959
960 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
961 EventTypeTablePointer eTTnode = *peTTnode;
962
963 if (eTTnode)
964 {
965 if (eTTnode->eventType != entry.m_eventType)
966 {
967 // Resize the table!
968 GrowEventTypeTable();
969 // Try again to add it.
970 AddEntry(entry);
971 return;
972 }
973 }
974 else
975 {
976 eTTnode = new EventTypeTable;
977 eTTnode->eventType = entry.m_eventType;
978 *peTTnode = eTTnode;
979 }
980
981 // Fill all hash entries between entry.m_id and entry.m_lastId...
982 eTTnode->eventEntryTable.Add(&entry);
983}
984
985void wxEventHashTable::AllocEventTypeTable(size_t size)
986{
987 m_eventTypeTable = new EventTypeTablePointer[size];
988 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
989 m_size = size;
990}
991
992void wxEventHashTable::GrowEventTypeTable()
993{
994 size_t oldSize = m_size;
995 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
996
997 // TODO: Search the most optimal grow sequence
998 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
999
1000 for ( size_t i = 0; i < oldSize; /* */ )
1001 {
1002 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
1003 if (eTToldNode)
1004 {
1005 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1006 EventTypeTablePointer eTTnode = *peTTnode;
1007
1008 // Check for collision, we don't want any.
1009 if (eTTnode)
1010 {
1011 GrowEventTypeTable();
1012 continue; // Don't increment the counter,
1013 // as we still need to add this element.
1014 }
1015 else
1016 {
1017 // Get the old value and put it in the new table.
1018 *peTTnode = oldEventTypeTable[i];
1019 }
1020 }
1021
1022 i++;
1023 }
1024
1025 delete[] oldEventTypeTable;
1026}
1027
1028// ----------------------------------------------------------------------------
1029// wxEvtHandler
1030// ----------------------------------------------------------------------------
1031
1032/*
1033 * Event handler
1034 */
1035
1036wxEvtHandler::wxEvtHandler()
1037{
1038 m_nextHandler = (wxEvtHandler *) NULL;
1039 m_previousHandler = (wxEvtHandler *) NULL;
1040 m_enabled = true;
1041 m_dynamicEvents = (wxList *) NULL;
1042 m_pendingEvents = (wxList *) NULL;
1043
1044 // no client data (yet)
1045 m_clientData = NULL;
1046 m_clientDataType = wxClientData_None;
1047}
1048
1049wxEvtHandler::~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 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1066
1067 // Remove ourselves from sink destructor notifications
1068 // (this has usually been been done, in wxTrackable destructor)
1069 wxEvtHandler *eventSink = entry->m_eventSink;
1070 if ( eventSink )
1071 {
1072 wxEventConnectionRef * const
1073 evtConnRef = FindRefInTrackerList(eventSink);
1074 if ( evtConnRef )
1075 {
1076 eventSink->RemoveNode(evtConnRef);
1077 delete evtConnRef;
1078 }
1079 }
1080
1081 if (entry->m_callbackUserData)
1082 delete entry->m_callbackUserData;
1083 delete entry;
1084 }
1085 delete m_dynamicEvents;
1086 };
1087
1088 if (m_pendingEvents)
1089 m_pendingEvents->DeleteContents(true);
1090 delete m_pendingEvents;
1091
1092 // Remove us from wxPendingEvents if necessary.
1093 if ( wxPendingEvents )
1094 {
1095#if wxUSE_THREADS
1096 if (wxPendingEventsLocker)
1097 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1098#endif
1099
1100 if ( wxPendingEvents->DeleteObject(this) )
1101 {
1102 // check that we were present only once in the list
1103 wxASSERT_MSG( !wxPendingEvents->Find(this),
1104 "Handler occurs twice in wxPendingEvents list" );
1105 }
1106 //else: we weren't in this list at all, it's ok
1107
1108#if wxUSE_THREADS
1109 if (wxPendingEventsLocker)
1110 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1111#endif
1112 }
1113
1114 // we only delete object data, not untyped
1115 if ( m_clientDataType == wxClientData_Object )
1116 delete m_clientObject;
1117}
1118
1119#if wxUSE_THREADS
1120
1121bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1122{
1123 // check that we are really in a child thread
1124 wxASSERT_MSG( !wxThread::IsMain(),
1125 wxT("use ProcessEvent() in main thread") );
1126
1127 AddPendingEvent(event);
1128
1129 return true;
1130}
1131
1132#endif // wxUSE_THREADS
1133
1134void wxEvtHandler::QueueEvent(wxEvent *event)
1135{
1136 wxCHECK_RET( event, "NULL event can't be posted" );
1137
1138 // 1) Add this event to our list of pending events
1139 wxENTER_CRIT_SECT( m_pendingEventsLock );
1140
1141 if ( !m_pendingEvents )
1142 m_pendingEvents = new wxList;
1143
1144 m_pendingEvents->Append(event);
1145
1146 // 2) Add this event handler to list of event handlers that
1147 // have pending events.
1148
1149 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1150
1151 if ( !wxPendingEvents )
1152 wxPendingEvents = new wxList;
1153 if ( !wxPendingEvents->Find(this) )
1154 wxPendingEvents->Append(this);
1155
1156 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1157
1158 // only release m_pendingEventsLock now because otherwise there is a race
1159 // condition as described in the ticket #9093: we could process the event
1160 // just added to m_pendingEvents in our ProcessPendingEvents() below before
1161 // we had time to append this pointer to wxPendingEvents list; thus
1162 // breaking the invariant that a handler should be in the list iff it has
1163 // any pending events to process
1164 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1165
1166 // 3) Inform the system that new pending events are somewhere,
1167 // and that these should be processed in idle time.
1168 wxWakeUpIdle();
1169}
1170
1171void wxEvtHandler::ProcessPendingEvents()
1172{
1173 wxENTER_CRIT_SECT( m_pendingEventsLock );
1174
1175 // this method is only called by wxApp if this handler does have
1176 // pending events
1177 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1178 "should have pending events if called" );
1179
1180 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1181 wxEventPtr event(static_cast<wxEvent *>(node->GetData()));
1182
1183 // it's important we remove event from list before processing it, else a
1184 // nested event loop, for example from a modal dialog, might process the
1185 // same event again.
1186 m_pendingEvents->Erase(node);
1187
1188 // if there are no more pending events left, we don't need to stay in this
1189 // list
1190 if ( m_pendingEvents->IsEmpty() )
1191 {
1192#if wxUSE_THREADS
1193 if (wxPendingEventsLocker)
1194 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1195#endif
1196 wxPendingEvents->DeleteObject(this);
1197#if wxUSE_THREADS
1198 if (wxPendingEventsLocker)
1199 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1200#endif
1201 }
1202
1203 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1204
1205 ProcessEvent(*event);
1206
1207 // careful: this object could have been deleted by the event handler
1208 // executed by the above ProcessEvent() call, so we can't access any fields
1209 // of this object any more
1210}
1211
1212/*
1213 * Event table stuff
1214 */
1215/* static */ bool
1216wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1217 wxEvtHandler *handler,
1218 wxEvent& event)
1219{
1220 int tableId1 = entry.m_id,
1221 tableId2 = entry.m_lastId;
1222
1223 // match only if the event type is the same and the id is either -1 in
1224 // the event table (meaning "any") or the event id matches the id
1225 // specified in the event table either exactly or by falling into
1226 // range between first and last
1227 if ((tableId1 == wxID_ANY) ||
1228 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1229 (tableId2 != wxID_ANY &&
1230 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1231 {
1232 event.Skip(false);
1233 event.m_callbackUserData = entry.m_callbackUserData;
1234
1235#if wxUSE_EXCEPTIONS
1236 if ( wxTheApp )
1237 {
1238 // call the handler via wxApp method which allows the user to catch
1239 // any exceptions which may be thrown by any handler in the program
1240 // in one place
1241 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1242 }
1243 else
1244#endif // wxUSE_EXCEPTIONS
1245 {
1246 // no need for an extra virtual function call
1247 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1248 }
1249
1250 if (!event.GetSkipped())
1251 return true;
1252 }
1253
1254 return false;
1255}
1256
1257bool wxEvtHandler::TryParent(wxEvent& event)
1258{
1259 if ( GetNextHandler() )
1260 {
1261 // the next handler will pass it to wxTheApp if it doesn't process it,
1262 // so return from here to avoid doing it again
1263 return GetNextHandler()->TryParent(event);
1264 }
1265
1266 if ( wxTheApp && (this != wxTheApp) )
1267 {
1268 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1269 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1270 // processed appropriately via SearchEventTable.
1271 if ( event.GetEventType() != wxEVT_IDLE )
1272 {
1273 if ( wxTheApp->ProcessEvent(event) )
1274 return true;
1275 }
1276 }
1277
1278 return false;
1279}
1280
1281bool wxEvtHandler::ProcessEvent(wxEvent& event)
1282{
1283 // allow the application to hook into event processing
1284 if ( wxTheApp )
1285 {
1286 int rc = wxTheApp->FilterEvent(event);
1287 if ( rc != -1 )
1288 {
1289 wxASSERT_MSG( rc == 1 || rc == 0,
1290 _T("unexpected wxApp::FilterEvent return value") );
1291
1292 return rc != 0;
1293 }
1294 //else: proceed normally
1295 }
1296
1297 if ( ProcessEventHere(event) )
1298 return true;
1299
1300 // propagate the event upwards the window chain and/or to the application
1301 // object if it wasn't processed at this level
1302 return TryParent(event);
1303}
1304
1305bool wxEvtHandler::ProcessEventHere(wxEvent& event)
1306{
1307 // An event handler can be enabled or disabled
1308 if ( GetEvtHandlerEnabled() )
1309 {
1310 // if we have a validator, it has higher priority than our own event
1311 // table
1312 if ( TryValidator(event) )
1313 return true;
1314
1315 // Handle per-instance dynamic event tables first
1316 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1317 return true;
1318
1319 // Then static per-class event tables
1320 if ( GetEventHashTable().HandleEvent(event, this) )
1321 return true;
1322 }
1323
1324 // Try going down the event handler chain
1325 if ( GetNextHandler() && GetNextHandler()->ProcessEventHere(event) )
1326 return true;
1327
1328 // We don't have a handler for this event.
1329 return false;
1330}
1331
1332bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1333{
1334#if wxUSE_EXCEPTIONS
1335 try
1336 {
1337#endif
1338 return ProcessEvent(event);
1339#if wxUSE_EXCEPTIONS
1340 }
1341 catch ( ... )
1342 {
1343 wxEventLoopBase *loop = wxEventLoopBase::GetActive();
1344 try
1345 {
1346 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1347 {
1348 if ( loop )
1349 loop->Exit();
1350 }
1351 //else: continue running current event loop
1352
1353 return false;
1354 }
1355 catch ( ... )
1356 {
1357 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1358 // exception again: very good, but we still need Exit() to
1359 // be called
1360 if ( loop )
1361 loop->Exit();
1362 throw;
1363 }
1364 }
1365#endif // wxUSE_EXCEPTIONS
1366}
1367
1368
1369bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1370{
1371 const wxEventType eventType = event.GetEventType();
1372 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1373 {
1374 const wxEventTableEntry& entry = table.entries[i];
1375 if ( eventType == entry.m_eventType )
1376 {
1377 if ( ProcessEventIfMatches(entry, this, event) )
1378 return true;
1379 }
1380 }
1381
1382 return false;
1383}
1384
1385void wxEvtHandler::Connect( int id, int lastId,
1386 wxEventType eventType,
1387 wxObjectEventFunction func,
1388 wxObject *userData,
1389 wxEvtHandler* eventSink )
1390{
1391 wxDynamicEventTableEntry *entry =
1392 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1393
1394 if (!m_dynamicEvents)
1395 m_dynamicEvents = new wxList;
1396
1397 // Insert at the front of the list so most recent additions are found first
1398 m_dynamicEvents->Insert( (wxObject*) entry );
1399
1400 // Make sure we get to know when a sink is destroyed
1401 if ( eventSink && eventSink != this )
1402 {
1403 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1404 if ( evtConnRef )
1405 evtConnRef->IncRef( );
1406 else
1407 new wxEventConnectionRef(this, eventSink);
1408 }
1409}
1410
1411bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1412 wxObjectEventFunction func,
1413 wxObject *userData,
1414 wxEvtHandler* eventSink )
1415{
1416 if (!m_dynamicEvents)
1417 return false;
1418
1419 // Remove connection from tracker node (wxEventConnectionRef)
1420 if ( eventSink && eventSink != this )
1421 {
1422 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1423 if ( evtConnRef )
1424 evtConnRef->DecRef();
1425 }
1426
1427 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1428 while (node)
1429 {
1430 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1431
1432 if ((entry->m_id == id) &&
1433 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1434 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1435 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1436 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1437 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1438 {
1439 if (entry->m_callbackUserData)
1440 delete entry->m_callbackUserData;
1441 m_dynamicEvents->Erase( node );
1442 delete entry;
1443 return true;
1444 }
1445 node = node->GetNext();
1446 }
1447 return false;
1448}
1449
1450bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1451{
1452 wxCHECK_MSG( m_dynamicEvents, false,
1453 wxT("caller should check that we have dynamic events") );
1454
1455 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1456 while (node)
1457 {
1458 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1459
1460 // get next node before (maybe) calling the event handler as it could
1461 // call Disconnect() invalidating the current node
1462 node = node->GetNext();
1463
1464 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1465 {
1466 wxEvtHandler *handler = entry->m_eventSink ? entry->m_eventSink
1467 : this;
1468 if ( ProcessEventIfMatches(*entry, handler, event) )
1469 return true;
1470 }
1471 }
1472
1473 return false;
1474}
1475
1476void wxEvtHandler::DoSetClientObject( wxClientData *data )
1477{
1478 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1479 wxT("can't have both object and void client data") );
1480
1481 if ( m_clientObject )
1482 delete m_clientObject;
1483
1484 m_clientObject = data;
1485 m_clientDataType = wxClientData_Object;
1486}
1487
1488wxClientData *wxEvtHandler::DoGetClientObject() const
1489{
1490 // it's not an error to call GetClientObject() on a window which doesn't
1491 // have client data at all - NULL will be returned
1492 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1493 wxT("this window doesn't have object client data") );
1494
1495 return m_clientObject;
1496}
1497
1498void wxEvtHandler::DoSetClientData( void *data )
1499{
1500 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1501 wxT("can't have both object and void client data") );
1502
1503 m_clientData = data;
1504 m_clientDataType = wxClientData_Void;
1505}
1506
1507void *wxEvtHandler::DoGetClientData() const
1508{
1509 // it's not an error to call GetClientData() on a window which doesn't have
1510 // client data at all - NULL will be returned
1511 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1512 wxT("this window doesn't have void client data") );
1513
1514 return m_clientData;
1515}
1516
1517// A helper to find an wxEventConnectionRef object
1518wxEventConnectionRef *
1519wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1520{
1521 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1522 {
1523 // we only want wxEventConnectionRef nodes here
1524 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1525 if ( evtConnRef && evtConnRef->m_src == this )
1526 {
1527 wxASSERT( evtConnRef->m_sink==eventSink );
1528 return evtConnRef;
1529 }
1530 }
1531
1532 return NULL;
1533}
1534
1535void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1536{
1537 wxASSERT(m_dynamicEvents);
1538
1539 // remove all connections with this sink
1540 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1541 while (node)
1542 {
1543 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1544 node_nxt = node->GetNext();
1545
1546 if ( entry->m_eventSink==sink )
1547 {
1548 if (entry->m_callbackUserData)
1549 delete entry->m_callbackUserData;
1550 m_dynamicEvents->Erase( node );
1551 delete entry;
1552 }
1553 node = node_nxt;
1554 }
1555}
1556
1557#endif // wxUSE_BASE
1558
1559#if wxUSE_GUI
1560
1561// Find a window with the focus, that is also a descendant of the given window.
1562// This is used to determine the window to initially send commands to.
1563wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1564{
1565 // Process events starting with the window with the focus, if any.
1566 wxWindow* focusWin = wxWindow::FindFocus();
1567 wxWindow* win = focusWin;
1568
1569 // Check if this is a descendant of this frame.
1570 // If not, win will be set to NULL.
1571 while (win)
1572 {
1573 if (win == ancestor)
1574 break;
1575 else
1576 win = win->GetParent();
1577 }
1578 if (win == (wxWindow*) NULL)
1579 focusWin = (wxWindow*) NULL;
1580
1581 return focusWin;
1582}
1583
1584// ----------------------------------------------------------------------------
1585// wxEventBlocker
1586// ----------------------------------------------------------------------------
1587
1588wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1589{
1590 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1591
1592 m_window = win;
1593
1594 Block(type);
1595 m_window->PushEventHandler(this);
1596}
1597
1598wxEventBlocker::~wxEventBlocker()
1599{
1600 wxEvtHandler *popped = m_window->PopEventHandler(false);
1601 wxCHECK_RET(popped == this,
1602 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1603}
1604
1605bool wxEventBlocker::ProcessEvent(wxEvent& event)
1606{
1607 // should this event be blocked?
1608 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1609 {
1610 wxEventType t = (wxEventType)m_eventsToBlock[i];
1611 if ( t == wxEVT_ANY || t == event.GetEventType() )
1612 return true; // yes, it should: mark this event as processed
1613 }
1614
1615 return false;
1616}
1617
1618#endif // wxUSE_GUI
wxWidgets (Impactor)