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[wxWidgets.git] / src / common / event.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/common/event.cpp
3 // Purpose: Event classes
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 01/02/97
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #include "wx/event.h"
28 #include "wx/evtloop.h"
29
30 #ifndef WX_PRECOMP
31 #include "wx/list.h"
32 #include "wx/log.h"
33 #include "wx/app.h"
34 #include "wx/utils.h"
35 #include "wx/stopwatch.h"
36 #include "wx/module.h"
37
38 #if wxUSE_GUI
39 #include "wx/window.h"
40 #include "wx/control.h"
41 #include "wx/dc.h"
42 #include "wx/spinbutt.h"
43 #include "wx/textctrl.h"
44 #include "wx/validate.h"
45 #endif // wxUSE_GUI
46 #endif
47
48 #include "wx/thread.h"
49
50 #if wxUSE_BASE
51 #include "wx/scopedptr.h"
52
53 wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
54 wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
55 #endif // wxUSE_BASE
56
57 // ----------------------------------------------------------------------------
58 // wxWin macros
59 // ----------------------------------------------------------------------------
60
61 #if wxUSE_BASE
62 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
63 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
64 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
65 IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxEvent)
66 #endif // wxUSE_BASE
67
68 #if wxUSE_GUI
69 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
95 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
96 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
97 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
98 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
99 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
100 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
101 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
102 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
103 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
104 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
105 #endif // wxUSE_GUI
106
107 #if wxUSE_BASE
108
109 const wxEventTable *wxEvtHandler::GetEventTable() const
110 { return &wxEvtHandler::sm_eventTable; }
111
112 const wxEventTable wxEvtHandler::sm_eventTable =
113 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
114
115 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
116 { return wxEvtHandler::sm_eventHashTable; }
117
118 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
119
120 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
121 { wxDECLARE_EVENT_TABLE_TERMINATOR() };
122
123
124 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
125 // leaked, so we need to manually clean up all event tables before checking for
126 // the memory leaks when using it, however this breaks re-initializing the
127 // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
128 // event tables won't be rebuilt the next time, so disable this by default
129 #if wxUSE_MEMORY_TRACING
130
131 class wxEventTableEntryModule: public wxModule
132 {
133 public:
134 wxEventTableEntryModule() { }
135 virtual bool OnInit() { return true; }
136 virtual void OnExit() { wxEventHashTable::ClearAll(); }
137
138 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
139 };
140
141 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
142
143 #endif // wxUSE_MEMORY_TRACING
144
145 // ----------------------------------------------------------------------------
146 // global variables
147 // ----------------------------------------------------------------------------
148
149 // common event types are defined here, other event types are defined by the
150 // components which use them
151
152 const wxEventType wxEVT_FIRST = 10000;
153 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
154 const wxEventType wxEVT_NULL = wxNewEventType();
155
156 wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent );
157
158 // Thread event
159 wxDEFINE_EVENT( wxEVT_THREAD, wxThreadEvent );
160
161 #endif // wxUSE_BASE
162
163 #if wxUSE_GUI
164
165 wxDEFINE_EVENT( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEvent );
166 wxDEFINE_EVENT( wxEVT_COMMAND_CHECKBOX_CLICKED, wxCommandEvent );
167 wxDEFINE_EVENT( wxEVT_COMMAND_CHOICE_SELECTED, wxCommandEvent );
168 wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_SELECTED, wxCommandEvent );
169 wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, wxCommandEvent );
170 wxDEFINE_EVENT( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, wxCommandEvent );
171 wxDEFINE_EVENT( wxEVT_COMMAND_MENU_SELECTED, wxCommandEvent );
172 wxDEFINE_EVENT( wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEvent );
173 wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBOX_SELECTED, wxCommandEvent );
174 wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBUTTON_SELECTED, wxCommandEvent );
175 wxDEFINE_EVENT( wxEVT_COMMAND_SCROLLBAR_UPDATED, wxCommandEvent );
176 wxDEFINE_EVENT( wxEVT_COMMAND_VLBOX_SELECTED, wxCommandEvent );
177 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_SELECTED, wxCommandEvent );
178 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_RCLICKED, wxCommandEvent );
179 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_ENTER, wxCommandEvent );
180 wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRL_UPDATED, wxCommandEvent );
181 wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED, wxCommandEvent );
182 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED, wxCommandEvent );
183 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_DROPDOWN, wxCommandEvent);
184 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_CLOSEUP, wxCommandEvent);
185
186 // Mouse event types
187 wxDEFINE_EVENT( wxEVT_LEFT_DOWN, wxMouseEvent );
188 wxDEFINE_EVENT( wxEVT_LEFT_UP, wxMouseEvent );
189 wxDEFINE_EVENT( wxEVT_MIDDLE_DOWN, wxMouseEvent );
190 wxDEFINE_EVENT( wxEVT_MIDDLE_UP, wxMouseEvent );
191 wxDEFINE_EVENT( wxEVT_RIGHT_DOWN, wxMouseEvent );
192 wxDEFINE_EVENT( wxEVT_RIGHT_UP, wxMouseEvent );
193 wxDEFINE_EVENT( wxEVT_MOTION, wxMouseEvent );
194 wxDEFINE_EVENT( wxEVT_ENTER_WINDOW, wxMouseEvent );
195 wxDEFINE_EVENT( wxEVT_LEAVE_WINDOW, wxMouseEvent );
196 wxDEFINE_EVENT( wxEVT_LEFT_DCLICK, wxMouseEvent );
197 wxDEFINE_EVENT( wxEVT_MIDDLE_DCLICK, wxMouseEvent );
198 wxDEFINE_EVENT( wxEVT_RIGHT_DCLICK, wxMouseEvent );
199 wxDEFINE_EVENT( wxEVT_SET_FOCUS, wxFocusEvent );
200 wxDEFINE_EVENT( wxEVT_KILL_FOCUS, wxFocusEvent );
201 wxDEFINE_EVENT( wxEVT_CHILD_FOCUS, wxChildFocusEvent );
202 wxDEFINE_EVENT( wxEVT_MOUSEWHEEL, wxMouseEvent );
203 wxDEFINE_EVENT( wxEVT_AUX1_DOWN, wxMouseEvent );
204 wxDEFINE_EVENT( wxEVT_AUX1_UP, wxMouseEvent );
205 wxDEFINE_EVENT( wxEVT_AUX1_DCLICK, wxMouseEvent );
206 wxDEFINE_EVENT( wxEVT_AUX2_DOWN, wxMouseEvent );
207 wxDEFINE_EVENT( wxEVT_AUX2_UP, wxMouseEvent );
208 wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent );
209
210 // Character input event type
211 wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent );
212 wxDEFINE_EVENT( wxEVT_AFTER_CHAR, wxKeyEvent );
213 wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent );
214 wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent );
215 wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent );
216 wxDEFINE_EVENT( wxEVT_KEY_UP, wxKeyEvent );
217 #if wxUSE_HOTKEY
218 wxDEFINE_EVENT( wxEVT_HOTKEY, wxKeyEvent );
219 #endif
220
221 // Set cursor event
222 wxDEFINE_EVENT( wxEVT_SET_CURSOR, wxSetCursorEvent );
223
224 // wxScrollbar and wxSlider event identifiers
225 wxDEFINE_EVENT( wxEVT_SCROLL_TOP, wxScrollEvent );
226 wxDEFINE_EVENT( wxEVT_SCROLL_BOTTOM, wxScrollEvent );
227 wxDEFINE_EVENT( wxEVT_SCROLL_LINEUP, wxScrollEvent );
228 wxDEFINE_EVENT( wxEVT_SCROLL_LINEDOWN, wxScrollEvent );
229 wxDEFINE_EVENT( wxEVT_SCROLL_PAGEUP, wxScrollEvent );
230 wxDEFINE_EVENT( wxEVT_SCROLL_PAGEDOWN, wxScrollEvent );
231 wxDEFINE_EVENT( wxEVT_SCROLL_THUMBTRACK, wxScrollEvent );
232 wxDEFINE_EVENT( wxEVT_SCROLL_THUMBRELEASE, wxScrollEvent );
233 wxDEFINE_EVENT( wxEVT_SCROLL_CHANGED, wxScrollEvent );
234
235 // Due to a bug in older wx versions, wxSpinEvents were being sent with type of
236 // wxEVT_SCROLL_LINEUP, wxEVT_SCROLL_LINEDOWN and wxEVT_SCROLL_THUMBTRACK. But
237 // with the type-safe events in place, these event types are associated with
238 // wxScrollEvent. To allow handling of spin events, new event types have been
239 // defined in spinbutt.h/spinnbuttcmn.cpp. To maintain backward compatibility
240 // the spin event types are being initialized with the scroll event types.
241
242 #if wxUSE_SPINBTN
243
244 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_UP, wxSpinEvent, wxEVT_SCROLL_LINEUP );
245 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_DOWN, wxSpinEvent, wxEVT_SCROLL_LINEDOWN );
246 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN, wxSpinEvent, wxEVT_SCROLL_THUMBTRACK );
247
248 #endif // wxUSE_SPINBTN
249
250 // Scroll events from wxWindow
251 wxDEFINE_EVENT( wxEVT_SCROLLWIN_TOP, wxScrollWinEvent );
252 wxDEFINE_EVENT( wxEVT_SCROLLWIN_BOTTOM, wxScrollWinEvent );
253 wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEUP, wxScrollWinEvent );
254 wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEDOWN, wxScrollWinEvent );
255 wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEUP, wxScrollWinEvent );
256 wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEDOWN, wxScrollWinEvent );
257 wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBTRACK, wxScrollWinEvent );
258 wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBRELEASE, wxScrollWinEvent );
259
260 // System events
261 wxDEFINE_EVENT( wxEVT_SIZE, wxSizeEvent );
262 wxDEFINE_EVENT( wxEVT_SIZING, wxSizeEvent );
263 wxDEFINE_EVENT( wxEVT_MOVE, wxMoveEvent );
264 wxDEFINE_EVENT( wxEVT_MOVING, wxMoveEvent );
265 wxDEFINE_EVENT( wxEVT_MOVE_START, wxMoveEvent );
266 wxDEFINE_EVENT( wxEVT_MOVE_END, wxMoveEvent );
267 wxDEFINE_EVENT( wxEVT_CLOSE_WINDOW, wxCloseEvent );
268 wxDEFINE_EVENT( wxEVT_END_SESSION, wxCloseEvent );
269 wxDEFINE_EVENT( wxEVT_QUERY_END_SESSION, wxCloseEvent );
270 wxDEFINE_EVENT( wxEVT_HIBERNATE, wxActivateEvent );
271 wxDEFINE_EVENT( wxEVT_ACTIVATE_APP, wxActivateEvent );
272 wxDEFINE_EVENT( wxEVT_ACTIVATE, wxActivateEvent );
273 wxDEFINE_EVENT( wxEVT_CREATE, wxWindowCreateEvent );
274 wxDEFINE_EVENT( wxEVT_DESTROY, wxWindowDestroyEvent );
275 wxDEFINE_EVENT( wxEVT_SHOW, wxShowEvent );
276 wxDEFINE_EVENT( wxEVT_ICONIZE, wxIconizeEvent );
277 wxDEFINE_EVENT( wxEVT_MAXIMIZE, wxMaximizeEvent );
278 wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_CHANGED, wxMouseCaptureChangedEvent );
279 wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_LOST, wxMouseCaptureLostEvent );
280 wxDEFINE_EVENT( wxEVT_PAINT, wxPaintEvent );
281 wxDEFINE_EVENT( wxEVT_ERASE_BACKGROUND, wxEraseEvent );
282 wxDEFINE_EVENT( wxEVT_NC_PAINT, wxNcPaintEvent );
283 wxDEFINE_EVENT( wxEVT_MENU_OPEN, wxMenuEvent );
284 wxDEFINE_EVENT( wxEVT_MENU_CLOSE, wxMenuEvent );
285 wxDEFINE_EVENT( wxEVT_MENU_HIGHLIGHT, wxMenuEvent );
286 wxDEFINE_EVENT( wxEVT_CONTEXT_MENU, wxContextMenuEvent );
287 wxDEFINE_EVENT( wxEVT_SYS_COLOUR_CHANGED, wxSysColourChangedEvent );
288 wxDEFINE_EVENT( wxEVT_DISPLAY_CHANGED, wxDisplayChangedEvent );
289 wxDEFINE_EVENT( wxEVT_QUERY_NEW_PALETTE, wxQueryNewPaletteEvent );
290 wxDEFINE_EVENT( wxEVT_PALETTE_CHANGED, wxPaletteChangedEvent );
291 wxDEFINE_EVENT( wxEVT_JOY_BUTTON_DOWN, wxJoystickEvent );
292 wxDEFINE_EVENT( wxEVT_JOY_BUTTON_UP, wxJoystickEvent );
293 wxDEFINE_EVENT( wxEVT_JOY_MOVE, wxJoystickEvent );
294 wxDEFINE_EVENT( wxEVT_JOY_ZMOVE, wxJoystickEvent );
295 wxDEFINE_EVENT( wxEVT_DROP_FILES, wxDropFilesEvent );
296 wxDEFINE_EVENT( wxEVT_INIT_DIALOG, wxInitDialogEvent );
297 wxDEFINE_EVENT( wxEVT_UPDATE_UI, wxUpdateUIEvent );
298
299 // Clipboard events
300 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_COPY, wxClipboardTextEvent );
301 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_CUT, wxClipboardTextEvent );
302 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_PASTE, wxClipboardTextEvent );
303
304 // Generic command events
305 // Note: a click is a higher-level event than button down/up
306 wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_CLICK, wxCommandEvent );
307 wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_DCLICK, wxCommandEvent );
308 wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_CLICK, wxCommandEvent );
309 wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_DCLICK, wxCommandEvent );
310 wxDEFINE_EVENT( wxEVT_COMMAND_SET_FOCUS, wxCommandEvent );
311 wxDEFINE_EVENT( wxEVT_COMMAND_KILL_FOCUS, wxCommandEvent );
312 wxDEFINE_EVENT( wxEVT_COMMAND_ENTER, wxCommandEvent );
313
314 // Help events
315 wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent );
316 wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent );
317
318 #endif // wxUSE_GUI
319
320 #if wxUSE_BASE
321
322 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
323
324 // ============================================================================
325 // implementation
326 // ============================================================================
327
328 // ----------------------------------------------------------------------------
329 // event initialization
330 // ----------------------------------------------------------------------------
331
332 int wxNewEventType()
333 {
334 // MT-FIXME
335 static int s_lastUsedEventType = wxEVT_FIRST;
336
337 return s_lastUsedEventType++;
338 }
339 // ----------------------------------------------------------------------------
340 // wxEventFunctor
341 // ----------------------------------------------------------------------------
342
343 wxEventFunctor::~wxEventFunctor()
344 {
345 }
346
347 // ----------------------------------------------------------------------------
348 // wxEvent
349 // ----------------------------------------------------------------------------
350
351 /*
352 * General wxWidgets events, covering all interesting things that might happen
353 * (button clicking, resizing, setting text in widgets, etc.).
354 *
355 * For each completely new event type, derive a new event class.
356 *
357 */
358
359 wxEvent::wxEvent(int theId, wxEventType commandType)
360 {
361 m_eventType = commandType;
362 m_eventObject = NULL;
363 m_timeStamp = 0;
364 m_id = theId;
365 m_skipped = false;
366 m_callbackUserData = NULL;
367 m_handlerToProcessOnlyIn = NULL;
368 m_isCommandEvent = false;
369 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
370 m_wasProcessed = false;
371 }
372
373 wxEvent::wxEvent(const wxEvent& src)
374 : wxObject(src)
375 , m_eventObject(src.m_eventObject)
376 , m_eventType(src.m_eventType)
377 , m_timeStamp(src.m_timeStamp)
378 , m_id(src.m_id)
379 , m_callbackUserData(src.m_callbackUserData)
380 , m_handlerToProcessOnlyIn(NULL)
381 , m_propagationLevel(src.m_propagationLevel)
382 , m_skipped(src.m_skipped)
383 , m_isCommandEvent(src.m_isCommandEvent)
384 , m_wasProcessed(false)
385 {
386 }
387
388 wxEvent& wxEvent::operator=(const wxEvent& src)
389 {
390 wxObject::operator=(src);
391
392 m_eventObject = src.m_eventObject;
393 m_eventType = src.m_eventType;
394 m_timeStamp = src.m_timeStamp;
395 m_id = src.m_id;
396 m_callbackUserData = src.m_callbackUserData;
397 m_handlerToProcessOnlyIn = NULL;
398 m_propagationLevel = src.m_propagationLevel;
399 m_skipped = src.m_skipped;
400 m_isCommandEvent = src.m_isCommandEvent;
401
402 // don't change m_wasProcessed
403
404 return *this;
405 }
406
407 #endif // wxUSE_BASE
408
409 #if wxUSE_GUI
410
411 // ----------------------------------------------------------------------------
412 // wxCommandEvent
413 // ----------------------------------------------------------------------------
414
415 #ifdef __VISUALC__
416 // 'this' : used in base member initializer list (for m_commandString)
417 #pragma warning(disable:4355)
418 #endif
419
420 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
421 : wxEvent(theId, commandType)
422 {
423 m_clientData = NULL;
424 m_clientObject = NULL;
425 m_isCommandEvent = true;
426
427 // the command events are propagated upwards by default
428 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
429 }
430
431 #ifdef __VISUALC__
432 #pragma warning(default:4355)
433 #endif
434
435 wxString wxCommandEvent::GetString() const
436 {
437 if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
438 {
439 return m_cmdString;
440 }
441 else
442 {
443 #if wxUSE_TEXTCTRL
444 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
445 if ( txt )
446 return txt->GetValue();
447 else
448 #endif // wxUSE_TEXTCTRL
449 return m_cmdString;
450 }
451 }
452
453 // ----------------------------------------------------------------------------
454 // wxUpdateUIEvent
455 // ----------------------------------------------------------------------------
456
457 #if wxUSE_LONGLONG
458 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
459 #endif
460
461 long wxUpdateUIEvent::sm_updateInterval = 0;
462
463 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
464
465 // Can we update?
466 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
467 {
468 // Don't update if we've switched global updating off
469 // and this window doesn't support updates.
470 if (win &&
471 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
472 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
473 return false;
474
475 // Don't update children of the hidden windows: this is useless as any
476 // change to their state won't be seen by the user anyhow. Notice that this
477 // argument doesn't apply to the hidden windows (with visible parent)
478 // themselves as they could be shown by their EVT_UPDATE_UI handler.
479 if ( win->GetParent() && !win->GetParent()->IsShownOnScreen() )
480 return false;
481
482 if (sm_updateInterval == -1)
483 return false;
484
485 if (sm_updateInterval == 0)
486 return true;
487
488 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
489 wxLongLong now = wxGetLocalTimeMillis();
490 if (now > (sm_lastUpdate + sm_updateInterval))
491 {
492 return true;
493 }
494
495 return false;
496 #else
497 // If we don't have wxStopWatch or wxLongLong, we
498 // should err on the safe side and update now anyway.
499 return true;
500 #endif
501 }
502
503 // Reset the update time to provide a delay until the next
504 // time we should update
505 void wxUpdateUIEvent::ResetUpdateTime()
506 {
507 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
508 if (sm_updateInterval > 0)
509 {
510 wxLongLong now = wxGetLocalTimeMillis();
511 if (now > (sm_lastUpdate + sm_updateInterval))
512 {
513 sm_lastUpdate = now;
514 }
515 }
516 #endif
517 }
518
519 // ----------------------------------------------------------------------------
520 // wxScrollEvent
521 // ----------------------------------------------------------------------------
522
523 wxScrollEvent::wxScrollEvent(wxEventType commandType,
524 int id,
525 int pos,
526 int orient)
527 : wxCommandEvent(commandType, id)
528 {
529 m_extraLong = orient;
530 m_commandInt = pos;
531 }
532
533 // ----------------------------------------------------------------------------
534 // wxScrollWinEvent
535 // ----------------------------------------------------------------------------
536
537 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
538 int pos,
539 int orient)
540 {
541 m_eventType = commandType;
542 m_extraLong = orient;
543 m_commandInt = pos;
544 }
545
546 // ----------------------------------------------------------------------------
547 // wxMouseEvent
548 // ----------------------------------------------------------------------------
549
550 wxMouseEvent::wxMouseEvent(wxEventType commandType)
551 {
552 m_eventType = commandType;
553
554 m_x = 0;
555 m_y = 0;
556
557 m_leftDown = false;
558 m_middleDown = false;
559 m_rightDown = false;
560 m_aux1Down = false;
561 m_aux2Down = false;
562
563 m_clickCount = -1;
564
565 m_wheelRotation = 0;
566 m_wheelDelta = 0;
567 m_linesPerAction = 0;
568 m_wheelAxis = 0;
569 }
570
571 void wxMouseEvent::Assign(const wxMouseEvent& event)
572 {
573 wxEvent::operator=(event);
574
575 // Borland C++ 5.82 doesn't compile an explicit call to an implicitly
576 // defined operator=() so need to do it this way:
577 *static_cast<wxMouseState *>(this) = event;
578
579 m_x = event.m_x;
580 m_y = event.m_y;
581
582 m_leftDown = event.m_leftDown;
583 m_middleDown = event.m_middleDown;
584 m_rightDown = event.m_rightDown;
585 m_aux1Down = event.m_aux1Down;
586 m_aux2Down = event.m_aux2Down;
587
588 m_wheelRotation = event.m_wheelRotation;
589 m_wheelDelta = event.m_wheelDelta;
590 m_linesPerAction = event.m_linesPerAction;
591 m_wheelAxis = event.m_wheelAxis;
592 }
593
594 // return true if was a button dclick event
595 bool wxMouseEvent::ButtonDClick(int but) const
596 {
597 switch (but)
598 {
599 default:
600 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
601 // fall through
602
603 case wxMOUSE_BTN_ANY:
604 return (LeftDClick() || MiddleDClick() || RightDClick() ||
605 Aux1DClick() || Aux2DClick());
606
607 case wxMOUSE_BTN_LEFT:
608 return LeftDClick();
609
610 case wxMOUSE_BTN_MIDDLE:
611 return MiddleDClick();
612
613 case wxMOUSE_BTN_RIGHT:
614 return RightDClick();
615
616 case wxMOUSE_BTN_AUX1:
617 return Aux1DClick();
618
619 case wxMOUSE_BTN_AUX2:
620 return Aux2DClick();
621 }
622 }
623
624 // return true if was a button down event
625 bool wxMouseEvent::ButtonDown(int but) const
626 {
627 switch (but)
628 {
629 default:
630 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
631 // fall through
632
633 case wxMOUSE_BTN_ANY:
634 return (LeftDown() || MiddleDown() || RightDown() ||
635 Aux1Down() || Aux2Down());
636
637 case wxMOUSE_BTN_LEFT:
638 return LeftDown();
639
640 case wxMOUSE_BTN_MIDDLE:
641 return MiddleDown();
642
643 case wxMOUSE_BTN_RIGHT:
644 return RightDown();
645
646 case wxMOUSE_BTN_AUX1:
647 return Aux1Down();
648
649 case wxMOUSE_BTN_AUX2:
650 return Aux2Down();
651 }
652 }
653
654 // return true if was a button up event
655 bool wxMouseEvent::ButtonUp(int but) const
656 {
657 switch (but)
658 {
659 default:
660 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
661 // fall through
662
663 case wxMOUSE_BTN_ANY:
664 return (LeftUp() || MiddleUp() || RightUp() ||
665 Aux1Up() || Aux2Up());
666
667 case wxMOUSE_BTN_LEFT:
668 return LeftUp();
669
670 case wxMOUSE_BTN_MIDDLE:
671 return MiddleUp();
672
673 case wxMOUSE_BTN_RIGHT:
674 return RightUp();
675
676 case wxMOUSE_BTN_AUX1:
677 return Aux1Up();
678
679 case wxMOUSE_BTN_AUX2:
680 return Aux2Up();
681 }
682 }
683
684 // return true if the given button is currently changing state
685 bool wxMouseEvent::Button(int but) const
686 {
687 switch (but)
688 {
689 default:
690 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
691 // fall through
692
693 case wxMOUSE_BTN_ANY:
694 return ButtonUp(wxMOUSE_BTN_ANY) ||
695 ButtonDown(wxMOUSE_BTN_ANY) ||
696 ButtonDClick(wxMOUSE_BTN_ANY);
697
698 case wxMOUSE_BTN_LEFT:
699 return LeftDown() || LeftUp() || LeftDClick();
700
701 case wxMOUSE_BTN_MIDDLE:
702 return MiddleDown() || MiddleUp() || MiddleDClick();
703
704 case wxMOUSE_BTN_RIGHT:
705 return RightDown() || RightUp() || RightDClick();
706
707 case wxMOUSE_BTN_AUX1:
708 return Aux1Down() || Aux1Up() || Aux1DClick();
709
710 case wxMOUSE_BTN_AUX2:
711 return Aux2Down() || Aux2Up() || Aux2DClick();
712 }
713 }
714
715 int wxMouseEvent::GetButton() const
716 {
717 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
718 {
719 if ( Button(i) )
720 {
721 return i;
722 }
723 }
724
725 return wxMOUSE_BTN_NONE;
726 }
727
728 // Find the logical position of the event given the DC
729 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
730 {
731 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
732 return pt;
733 }
734
735 // ----------------------------------------------------------------------------
736 // wxKeyEvent
737 // ----------------------------------------------------------------------------
738
739 wxKeyEvent::wxKeyEvent(wxEventType type)
740 {
741 m_eventType = type;
742 m_keyCode = WXK_NONE;
743 #if wxUSE_UNICODE
744 m_uniChar = WXK_NONE;
745 #endif
746 }
747
748 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
749 : wxEvent(evt),
750 wxKeyboardState(evt)
751 {
752 m_x = evt.m_x;
753 m_y = evt.m_y;
754
755 m_keyCode = evt.m_keyCode;
756 m_rawCode = evt.m_rawCode;
757 m_rawFlags = evt.m_rawFlags;
758
759 #if wxUSE_UNICODE
760 m_uniChar = evt.m_uniChar;
761 #endif
762 }
763
764 bool wxKeyEvent::IsKeyInCategory(int category) const
765 {
766 switch ( GetKeyCode() )
767 {
768 case WXK_LEFT:
769 case WXK_RIGHT:
770 case WXK_UP:
771 case WXK_DOWN:
772 case WXK_NUMPAD_LEFT:
773 case WXK_NUMPAD_RIGHT:
774 case WXK_NUMPAD_UP:
775 case WXK_NUMPAD_DOWN:
776 return (category & WXK_CATEGORY_ARROW) != 0;
777
778 case WXK_PAGEDOWN:
779 case WXK_END:
780 case WXK_NUMPAD_PAGEUP:
781 case WXK_NUMPAD_PAGEDOWN:
782 return (category & WXK_CATEGORY_PAGING) != 0;
783
784 case WXK_HOME:
785 case WXK_PAGEUP:
786 case WXK_NUMPAD_HOME:
787 case WXK_NUMPAD_END:
788 return (category & WXK_CATEGORY_JUMP) != 0;
789
790 case WXK_TAB:
791 case WXK_NUMPAD_TAB:
792 return (category & WXK_CATEGORY_TAB) != 0;
793
794 case WXK_BACK:
795 case WXK_DELETE:
796 case WXK_NUMPAD_DELETE:
797 return (category & WXK_CATEGORY_CUT) != 0;
798
799 default:
800 return false;
801 }
802 }
803
804 // ----------------------------------------------------------------------------
805 // wxWindowCreateEvent
806 // ----------------------------------------------------------------------------
807
808 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
809 {
810 SetEventType(wxEVT_CREATE);
811 SetEventObject(win);
812 }
813
814 // ----------------------------------------------------------------------------
815 // wxWindowDestroyEvent
816 // ----------------------------------------------------------------------------
817
818 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
819 {
820 SetEventType(wxEVT_DESTROY);
821 SetEventObject(win);
822 }
823
824 // ----------------------------------------------------------------------------
825 // wxChildFocusEvent
826 // ----------------------------------------------------------------------------
827
828 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
829 : wxCommandEvent(wxEVT_CHILD_FOCUS)
830 {
831 SetEventObject(win);
832 }
833
834 // ----------------------------------------------------------------------------
835 // wxHelpEvent
836 // ----------------------------------------------------------------------------
837
838 /* static */
839 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
840 {
841 if ( origin == Origin_Unknown )
842 {
843 // assume that the event comes from the help button if it's not from
844 // keyboard and that pressing F1 always results in the help event
845 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
846 }
847
848 return origin;
849 }
850
851 #endif // wxUSE_GUI
852
853
854 #if wxUSE_BASE
855
856 // ----------------------------------------------------------------------------
857 // wxEventHashTable
858 // ----------------------------------------------------------------------------
859
860 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
861
862 wxEventHashTable* wxEventHashTable::sm_first = NULL;
863
864 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
865 : m_table(table),
866 m_rebuildHash(true)
867 {
868 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
869
870 m_next = sm_first;
871 if (m_next)
872 m_next->m_previous = this;
873 sm_first = this;
874 }
875
876 wxEventHashTable::~wxEventHashTable()
877 {
878 if (m_next)
879 m_next->m_previous = m_previous;
880 if (m_previous)
881 m_previous->m_next = m_next;
882 if (sm_first == this)
883 sm_first = m_next;
884
885 Clear();
886 }
887
888 void wxEventHashTable::Clear()
889 {
890 for ( size_t i = 0; i < m_size; i++ )
891 {
892 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
893 delete eTTnode;
894 }
895
896 wxDELETEA(m_eventTypeTable);
897
898 m_size = 0;
899 }
900
901 #if wxUSE_MEMORY_TRACING
902
903 // Clear all tables
904 void wxEventHashTable::ClearAll()
905 {
906 wxEventHashTable* table = sm_first;
907 while (table)
908 {
909 table->Clear();
910 table = table->m_next;
911 }
912 }
913
914 #endif // wxUSE_MEMORY_TRACING
915
916 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
917 {
918 if (m_rebuildHash)
919 {
920 InitHashTable();
921 m_rebuildHash = false;
922 }
923
924 if (!m_eventTypeTable)
925 return false;
926
927 // Find all entries for the given event type.
928 wxEventType eventType = event.GetEventType();
929 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
930 if (eTTnode && eTTnode->eventType == eventType)
931 {
932 // Now start the search for an event handler
933 // that can handle an event with the given ID.
934 const wxEventTableEntryPointerArray&
935 eventEntryTable = eTTnode->eventEntryTable;
936
937 const size_t count = eventEntryTable.GetCount();
938 for (size_t n = 0; n < count; n++)
939 {
940 const wxEventTableEntry& entry = *eventEntryTable[n];
941 if ( wxEvtHandler::ProcessEventIfMatchesId(entry, self, event) )
942 return true;
943 }
944 }
945
946 return false;
947 }
948
949 void wxEventHashTable::InitHashTable()
950 {
951 // Loop over the event tables and all its base tables.
952 const wxEventTable *table = &m_table;
953 while (table)
954 {
955 // Retrieve all valid event handler entries
956 const wxEventTableEntry *entry = table->entries;
957 while (entry->m_fn != 0)
958 {
959 // Add the event entry in the Hash.
960 AddEntry(*entry);
961
962 entry++;
963 }
964
965 table = table->baseTable;
966 }
967
968 // Let's free some memory.
969 size_t i;
970 for(i = 0; i < m_size; i++)
971 {
972 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
973 if (eTTnode)
974 {
975 eTTnode->eventEntryTable.Shrink();
976 }
977 }
978 }
979
980 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
981 {
982 // This might happen 'accidentally' as the app is exiting
983 if (!m_eventTypeTable)
984 return;
985
986 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
987 EventTypeTablePointer eTTnode = *peTTnode;
988
989 if (eTTnode)
990 {
991 if (eTTnode->eventType != entry.m_eventType)
992 {
993 // Resize the table!
994 GrowEventTypeTable();
995 // Try again to add it.
996 AddEntry(entry);
997 return;
998 }
999 }
1000 else
1001 {
1002 eTTnode = new EventTypeTable;
1003 eTTnode->eventType = entry.m_eventType;
1004 *peTTnode = eTTnode;
1005 }
1006
1007 // Fill all hash entries between entry.m_id and entry.m_lastId...
1008 eTTnode->eventEntryTable.Add(&entry);
1009 }
1010
1011 void wxEventHashTable::AllocEventTypeTable(size_t size)
1012 {
1013 m_eventTypeTable = new EventTypeTablePointer[size];
1014 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
1015 m_size = size;
1016 }
1017
1018 void wxEventHashTable::GrowEventTypeTable()
1019 {
1020 size_t oldSize = m_size;
1021 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
1022
1023 // TODO: Search the most optimal grow sequence
1024 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
1025
1026 for ( size_t i = 0; i < oldSize; /* */ )
1027 {
1028 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
1029 if (eTToldNode)
1030 {
1031 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1032 EventTypeTablePointer eTTnode = *peTTnode;
1033
1034 // Check for collision, we don't want any.
1035 if (eTTnode)
1036 {
1037 GrowEventTypeTable();
1038 continue; // Don't increment the counter,
1039 // as we still need to add this element.
1040 }
1041 else
1042 {
1043 // Get the old value and put it in the new table.
1044 *peTTnode = oldEventTypeTable[i];
1045 }
1046 }
1047
1048 i++;
1049 }
1050
1051 delete[] oldEventTypeTable;
1052 }
1053
1054 // ----------------------------------------------------------------------------
1055 // wxEvtHandler
1056 // ----------------------------------------------------------------------------
1057
1058 wxEvtHandler::wxEvtHandler()
1059 {
1060 m_nextHandler = NULL;
1061 m_previousHandler = NULL;
1062 m_enabled = true;
1063 m_dynamicEvents = NULL;
1064 m_pendingEvents = NULL;
1065
1066 // no client data (yet)
1067 m_clientData = NULL;
1068 m_clientDataType = wxClientData_None;
1069 }
1070
1071 wxEvtHandler::~wxEvtHandler()
1072 {
1073 Unlink();
1074
1075 if (m_dynamicEvents)
1076 {
1077 for ( wxList::iterator it = m_dynamicEvents->begin(),
1078 end = m_dynamicEvents->end();
1079 it != end;
1080 ++it )
1081 {
1082 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1083
1084 // Remove ourselves from sink destructor notifications
1085 // (this has usually been done, in wxTrackable destructor)
1086 wxEvtHandler *eventSink = entry->m_fn->GetEvtHandler();
1087 if ( eventSink )
1088 {
1089 wxEventConnectionRef * const
1090 evtConnRef = FindRefInTrackerList(eventSink);
1091 if ( evtConnRef )
1092 {
1093 eventSink->RemoveNode(evtConnRef);
1094 delete evtConnRef;
1095 }
1096 }
1097
1098 delete entry->m_callbackUserData;
1099 delete entry;
1100 }
1101 delete m_dynamicEvents;
1102 }
1103
1104 // Remove us from the list of the pending events if necessary.
1105 if (wxTheApp)
1106 wxTheApp->RemovePendingEventHandler(this);
1107
1108 DeletePendingEvents();
1109
1110 // we only delete object data, not untyped
1111 if ( m_clientDataType == wxClientData_Object )
1112 delete m_clientObject;
1113 }
1114
1115 void wxEvtHandler::Unlink()
1116 {
1117 // this event handler must take itself out of the chain of handlers:
1118
1119 if (m_previousHandler)
1120 m_previousHandler->SetNextHandler(m_nextHandler);
1121
1122 if (m_nextHandler)
1123 m_nextHandler->SetPreviousHandler(m_previousHandler);
1124
1125 m_nextHandler = NULL;
1126 m_previousHandler = NULL;
1127 }
1128
1129 bool wxEvtHandler::IsUnlinked() const
1130 {
1131 return m_previousHandler == NULL &&
1132 m_nextHandler == NULL;
1133 }
1134
1135 #if wxUSE_THREADS
1136
1137 bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1138 {
1139 // check that we are really in a child thread
1140 wxASSERT_MSG( !wxThread::IsMain(),
1141 wxT("use ProcessEvent() in main thread") );
1142
1143 AddPendingEvent(event);
1144
1145 return true;
1146 }
1147
1148 #endif // wxUSE_THREADS
1149
1150 void wxEvtHandler::QueueEvent(wxEvent *event)
1151 {
1152 wxCHECK_RET( event, "NULL event can't be posted" );
1153
1154 if (!wxTheApp)
1155 {
1156 // we need an event loop which manages the list of event handlers with
1157 // pending events... cannot proceed without it!
1158 wxLogDebug("No application object! Cannot queue this event!");
1159
1160 // anyway delete the given event to avoid memory leaks
1161 delete event;
1162
1163 return;
1164 }
1165
1166 // 1) Add this event to our list of pending events
1167 wxENTER_CRIT_SECT( m_pendingEventsLock );
1168
1169 if ( !m_pendingEvents )
1170 m_pendingEvents = new wxList;
1171
1172 m_pendingEvents->Append(event);
1173
1174 // 2) Add this event handler to list of event handlers that
1175 // have pending events.
1176
1177 wxTheApp->AppendPendingEventHandler(this);
1178
1179 // only release m_pendingEventsLock now because otherwise there is a race
1180 // condition as described in the ticket #9093: we could process the event
1181 // just added to m_pendingEvents in our ProcessPendingEvents() below before
1182 // we had time to append this pointer to wxHandlersWithPendingEvents list; thus
1183 // breaking the invariant that a handler should be in the list iff it has
1184 // any pending events to process
1185 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1186
1187 // 3) Inform the system that new pending events are somewhere,
1188 // and that these should be processed in idle time.
1189 wxWakeUpIdle();
1190 }
1191
1192 void wxEvtHandler::DeletePendingEvents()
1193 {
1194 if (m_pendingEvents)
1195 m_pendingEvents->DeleteContents(true);
1196 wxDELETE(m_pendingEvents);
1197 }
1198
1199 void wxEvtHandler::ProcessPendingEvents()
1200 {
1201 if (!wxTheApp)
1202 {
1203 // we need an event loop which manages the list of event handlers with
1204 // pending events... cannot proceed without it!
1205 wxLogDebug("No application object! Cannot process pending events!");
1206 return;
1207 }
1208
1209 // we need to process only a single pending event in this call because
1210 // each call to ProcessEvent() could result in the destruction of this
1211 // same event handler (see the comment at the end of this function)
1212
1213 wxENTER_CRIT_SECT( m_pendingEventsLock );
1214
1215 // this method is only called by wxApp if this handler does have
1216 // pending events
1217 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1218 "should have pending events if called" );
1219
1220 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1221 wxEvent* pEvent = static_cast<wxEvent *>(node->GetData());
1222
1223 // find the first event which can be processed now:
1224 wxEventLoopBase* evtLoop = wxEventLoopBase::GetActive();
1225 if (evtLoop && evtLoop->IsYielding())
1226 {
1227 while (node && pEvent && !evtLoop->IsEventAllowedInsideYield(pEvent->GetEventCategory()))
1228 {
1229 node = node->GetNext();
1230 pEvent = node ? static_cast<wxEvent *>(node->GetData()) : NULL;
1231 }
1232
1233 if (!node)
1234 {
1235 // all our events are NOT processable now... signal this:
1236 wxTheApp->DelayPendingEventHandler(this);
1237
1238 // see the comment at the beginning of evtloop.h header for the
1239 // logic behind YieldFor() and behind DelayPendingEventHandler()
1240
1241 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1242
1243 return;
1244 }
1245 }
1246
1247 wxEventPtr event(pEvent);
1248
1249 // it's important we remove event from list before processing it, else a
1250 // nested event loop, for example from a modal dialog, might process the
1251 // same event again.
1252 m_pendingEvents->Erase(node);
1253
1254 if ( m_pendingEvents->IsEmpty() )
1255 {
1256 // if there are no more pending events left, we don't need to
1257 // stay in this list
1258 wxTheApp->RemovePendingEventHandler(this);
1259 }
1260
1261 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1262
1263 ProcessEvent(*event);
1264
1265 // careful: this object could have been deleted by the event handler
1266 // executed by the above ProcessEvent() call, so we can't access any fields
1267 // of this object any more
1268 }
1269
1270 /* static */
1271 bool wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry,
1272 wxEvtHandler *handler,
1273 wxEvent& event)
1274 {
1275 int tableId1 = entry.m_id,
1276 tableId2 = entry.m_lastId;
1277
1278 // match only if the event type is the same and the id is either -1 in
1279 // the event table (meaning "any") or the event id matches the id
1280 // specified in the event table either exactly or by falling into
1281 // range between first and last
1282 if ((tableId1 == wxID_ANY) ||
1283 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1284 (tableId2 != wxID_ANY &&
1285 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1286 {
1287 event.Skip(false);
1288 event.m_callbackUserData = entry.m_callbackUserData;
1289
1290 #if wxUSE_EXCEPTIONS
1291 if ( wxTheApp )
1292 {
1293 // call the handler via wxApp method which allows the user to catch
1294 // any exceptions which may be thrown by any handler in the program
1295 // in one place
1296 wxTheApp->CallEventHandler(handler, *entry.m_fn, event);
1297 }
1298 else
1299 #endif // wxUSE_EXCEPTIONS
1300 {
1301 (*entry.m_fn)(handler, event);
1302 }
1303
1304 if (!event.GetSkipped())
1305 return true;
1306 }
1307
1308 return false;
1309 }
1310
1311 bool wxEvtHandler::DoTryApp(wxEvent& event)
1312 {
1313 if ( wxTheApp && (this != wxTheApp) )
1314 {
1315 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1316 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1317 // processed appropriately via SearchEventTable.
1318 if ( event.GetEventType() != wxEVT_IDLE )
1319 {
1320 if ( wxTheApp->ProcessEvent(event) )
1321 return true;
1322 }
1323 }
1324
1325 return false;
1326 }
1327
1328 bool wxEvtHandler::TryBefore(wxEvent& event)
1329 {
1330 #if WXWIN_COMPATIBILITY_2_8
1331 // call the old virtual function to keep the code overriding it working
1332 return TryValidator(event);
1333 #else
1334 wxUnusedVar(event);
1335 return false;
1336 #endif
1337 }
1338
1339 bool wxEvtHandler::TryAfter(wxEvent& event)
1340 {
1341 // We only want to pass the window to the application object once even if
1342 // there are several chained handlers. Ensure that this is what happens by
1343 // only calling DoTryApp() if there is no next handler (which would do it).
1344 //
1345 // Notice that, unlike simply calling TryAfter() on the last handler in the
1346 // chain only from ProcessEvent(), this also works with wxWindow object in
1347 // the middle of the chain: its overridden TryAfter() will still be called
1348 // and propagate the event upwards the window hierarchy even if it's not
1349 // the last one in the chain (which, admittedly, shouldn't happen often).
1350 if ( GetNextHandler() )
1351 return GetNextHandler()->TryAfter(event);
1352
1353 #if WXWIN_COMPATIBILITY_2_8
1354 // as above, call the old virtual function for compatibility
1355 return TryParent(event);
1356 #else
1357 return DoTryApp(event);
1358 #endif
1359 }
1360
1361 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1362 {
1363 // The very first thing we do is to allow the application to hook into
1364 // event processing in order to globally pre-process all events.
1365 //
1366 // Note that we should only do it if we're the first event handler called
1367 // to avoid calling FilterEvent() multiple times as the event goes through
1368 // the event handler chain and possibly upwards the window hierarchy.
1369 if ( !event.WasProcessed() )
1370 {
1371 if ( wxTheApp )
1372 {
1373 int rc = wxTheApp->FilterEvent(event);
1374 if ( rc != -1 )
1375 {
1376 wxASSERT_MSG( rc == 1 || rc == 0,
1377 "unexpected wxApp::FilterEvent return value" );
1378
1379 return rc != 0;
1380 }
1381 //else: proceed normally
1382 }
1383 }
1384
1385 // Short circuit the event processing logic if we're requested to process
1386 // this event in this handler only, see DoTryChain() for more details.
1387 if ( event.ShouldProcessOnlyIn(this) )
1388 return TryBeforeAndHere(event);
1389
1390
1391 // Try to process the event in this handler itself.
1392 if ( ProcessEventLocally(event) )
1393 {
1394 // It is possible that DoTryChain() called from ProcessEventLocally()
1395 // returned true but the event was not really processed: this happens
1396 // if a custom handler ignores the request to process the event in this
1397 // handler only and in this case we should skip the post processing
1398 // done in TryAfter() but still return the correct value ourselves to
1399 // indicate whether we did or did not find a handler for this event.
1400 return !event.GetSkipped();
1401 }
1402
1403 // If we still didn't find a handler, propagate the event upwards the
1404 // window chain and/or to the application object.
1405 if ( TryAfter(event) )
1406 return true;
1407
1408
1409 // No handler found anywhere, bail out.
1410 return false;
1411 }
1412
1413 bool wxEvtHandler::ProcessEventLocally(wxEvent& event)
1414 {
1415 // Try the hooks which should be called before our own handlers and this
1416 // handler itself first. Notice that we should not call ProcessEvent() on
1417 // this one as we're already called from it, which explains why we do it
1418 // here and not in DoTryChain()
1419 return TryBeforeAndHere(event) || DoTryChain(event);
1420 }
1421
1422 bool wxEvtHandler::DoTryChain(wxEvent& event)
1423 {
1424 for ( wxEvtHandler *h = GetNextHandler(); h; h = h->GetNextHandler() )
1425 {
1426 // We need to process this event at the level of this handler only
1427 // right now, the pre-/post-processing was either already done by
1428 // ProcessEvent() from which we were called or will be done by it when
1429 // we return.
1430 //
1431 // However we must call ProcessEvent() and not TryHereOnly() because the
1432 // existing code (including some in wxWidgets itself) expects the
1433 // overridden ProcessEvent() in its custom event handlers pushed on a
1434 // window to be called.
1435 //
1436 // So we must call ProcessEvent() but it must not do what it usually
1437 // does. To resolve this paradox we set up a special flag inside the
1438 // object itself to let ProcessEvent() know that it shouldn't do any
1439 // pre/post-processing for this event if it gets it. Note that this
1440 // only applies to this handler, if the event is passed to another one
1441 // by explicitly calling its ProcessEvent(), pre/post-processing should
1442 // be done as usual.
1443 //
1444 // Final complication is that if the implementation of ProcessEvent()
1445 // called wxEvent::DidntHonourProcessOnlyIn() (as the gross hack that
1446 // is wxScrollHelperEvtHandler::ProcessEvent() does) and ignored our
1447 // request to process event in this handler only, we have to compensate
1448 // for it by not processing the event further because this was already
1449 // done by that rogue event handler.
1450 wxEventProcessInHandlerOnly processInHandlerOnly(event, h);
1451 if ( h->ProcessEvent(event) )
1452 {
1453 // Make sure "skipped" flag is not set as the event was really
1454 // processed in this case. Normally it shouldn't be set anyhow but
1455 // make sure just in case the user code does something strange.
1456 event.Skip(false);
1457
1458 return true;
1459 }
1460
1461 if ( !event.ShouldProcessOnlyIn(h) )
1462 {
1463 // Still return true to indicate that no further processing should
1464 // be undertaken but ensure that "skipped" flag is set so that the
1465 // caller knows that the event was not really processed.
1466 event.Skip();
1467
1468 return true;
1469 }
1470 }
1471
1472 return false;
1473 }
1474
1475 bool wxEvtHandler::TryHereOnly(wxEvent& event)
1476 {
1477 // If the event handler is disabled it doesn't process any events
1478 if ( !GetEvtHandlerEnabled() )
1479 return false;
1480
1481 // Handle per-instance dynamic event tables first
1482 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1483 return true;
1484
1485 // Then static per-class event tables
1486 if ( GetEventHashTable().HandleEvent(event, this) )
1487 return true;
1488
1489 // We don't have a handler for this event.
1490 return false;
1491 }
1492
1493 bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1494 {
1495 #if wxUSE_EXCEPTIONS
1496 try
1497 {
1498 #endif
1499 return ProcessEvent(event);
1500 #if wxUSE_EXCEPTIONS
1501 }
1502 catch ( ... )
1503 {
1504 // notice that we do it in 2 steps to avoid warnings about possibly
1505 // uninitialized loop variable from some versions of g++ which are not
1506 // smart enough to figure out that GetActive() doesn't throw and so
1507 // that loop will always be initialized
1508 wxEventLoopBase *loop = NULL;
1509 try
1510 {
1511 loop = wxEventLoopBase::GetActive();
1512
1513 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1514 {
1515 if ( loop )
1516 loop->Exit();
1517 }
1518 //else: continue running current event loop
1519
1520 return false;
1521 }
1522 catch ( ... )
1523 {
1524 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1525 // exception again: very good, but we still need Exit() to
1526 // be called
1527 if ( loop )
1528 loop->Exit();
1529 throw;
1530 }
1531 }
1532 #endif // wxUSE_EXCEPTIONS
1533 }
1534
1535 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1536 {
1537 const wxEventType eventType = event.GetEventType();
1538 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1539 {
1540 const wxEventTableEntry& entry = table.entries[i];
1541 if ( eventType == entry.m_eventType )
1542 {
1543 if ( ProcessEventIfMatchesId(entry, this, event) )
1544 return true;
1545 }
1546 }
1547
1548 return false;
1549 }
1550
1551 void wxEvtHandler::DoBind(int id,
1552 int lastId,
1553 wxEventType eventType,
1554 wxEventFunctor *func,
1555 wxObject *userData)
1556 {
1557 wxDynamicEventTableEntry *entry =
1558 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData);
1559
1560 if (!m_dynamicEvents)
1561 m_dynamicEvents = new wxList;
1562
1563 // Insert at the front of the list so most recent additions are found first
1564 m_dynamicEvents->Insert( (wxObject*) entry );
1565
1566 // Make sure we get to know when a sink is destroyed
1567 wxEvtHandler *eventSink = func->GetEvtHandler();
1568 if ( eventSink && eventSink != this )
1569 {
1570 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1571 if ( evtConnRef )
1572 evtConnRef->IncRef( );
1573 else
1574 new wxEventConnectionRef(this, eventSink);
1575 }
1576 }
1577
1578 bool
1579 wxEvtHandler::DoUnbind(int id,
1580 int lastId,
1581 wxEventType eventType,
1582 const wxEventFunctor& func,
1583 wxObject *userData)
1584 {
1585 if (!m_dynamicEvents)
1586 return false;
1587
1588 // Remove connection from tracker node (wxEventConnectionRef)
1589 wxEvtHandler *eventSink = func.GetEvtHandler();
1590 if ( eventSink && eventSink != this )
1591 {
1592 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1593 if ( evtConnRef )
1594 evtConnRef->DecRef();
1595 }
1596
1597 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1598 while (node)
1599 {
1600 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1601
1602 if ((entry->m_id == id) &&
1603 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1604 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1605 entry->m_fn->IsMatching(func) &&
1606 ((entry->m_callbackUserData == userData) || !userData))
1607 {
1608 delete entry->m_callbackUserData;
1609 m_dynamicEvents->Erase( node );
1610 delete entry;
1611 return true;
1612 }
1613 node = node->GetNext();
1614 }
1615 return false;
1616 }
1617
1618 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1619 {
1620 wxCHECK_MSG( m_dynamicEvents, false,
1621 wxT("caller should check that we have dynamic events") );
1622
1623 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1624 while (node)
1625 {
1626 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1627
1628 // get next node before (maybe) calling the event handler as it could
1629 // call Disconnect() invalidating the current node
1630 node = node->GetNext();
1631
1632 if ( event.GetEventType() == entry->m_eventType )
1633 {
1634 wxEvtHandler *handler = entry->m_fn->GetEvtHandler();
1635 if ( !handler )
1636 handler = this;
1637 if ( ProcessEventIfMatchesId(*entry, handler, event) )
1638 return true;
1639 }
1640 }
1641
1642 return false;
1643 }
1644
1645 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1646 {
1647 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1648 wxT("can't have both object and void client data") );
1649
1650 if ( m_clientObject )
1651 delete m_clientObject;
1652
1653 m_clientObject = data;
1654 m_clientDataType = wxClientData_Object;
1655 }
1656
1657 wxClientData *wxEvtHandler::DoGetClientObject() const
1658 {
1659 // it's not an error to call GetClientObject() on a window which doesn't
1660 // have client data at all - NULL will be returned
1661 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1662 wxT("this window doesn't have object client data") );
1663
1664 return m_clientObject;
1665 }
1666
1667 void wxEvtHandler::DoSetClientData( void *data )
1668 {
1669 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1670 wxT("can't have both object and void client data") );
1671
1672 m_clientData = data;
1673 m_clientDataType = wxClientData_Void;
1674 }
1675
1676 void *wxEvtHandler::DoGetClientData() const
1677 {
1678 // it's not an error to call GetClientData() on a window which doesn't have
1679 // client data at all - NULL will be returned
1680 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1681 wxT("this window doesn't have void client data") );
1682
1683 return m_clientData;
1684 }
1685
1686 // A helper to find an wxEventConnectionRef object
1687 wxEventConnectionRef *
1688 wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1689 {
1690 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1691 {
1692 // we only want wxEventConnectionRef nodes here
1693 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1694 if ( evtConnRef && evtConnRef->m_src == this )
1695 {
1696 wxASSERT( evtConnRef->m_sink==eventSink );
1697 return evtConnRef;
1698 }
1699 }
1700
1701 return NULL;
1702 }
1703
1704 void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1705 {
1706 wxASSERT(m_dynamicEvents);
1707
1708 // remove all connections with this sink
1709 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1710 while (node)
1711 {
1712 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1713 node_nxt = node->GetNext();
1714
1715 if ( entry->m_fn->GetEvtHandler() == sink )
1716 {
1717 delete entry->m_callbackUserData;
1718 m_dynamicEvents->Erase( node );
1719 delete entry;
1720 }
1721 node = node_nxt;
1722 }
1723 }
1724
1725 #endif // wxUSE_BASE
1726
1727 #if wxUSE_GUI
1728
1729 // Find a window with the focus, that is also a descendant of the given window.
1730 // This is used to determine the window to initially send commands to.
1731 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1732 {
1733 // Process events starting with the window with the focus, if any.
1734 wxWindow* focusWin = wxWindow::FindFocus();
1735 wxWindow* win = focusWin;
1736
1737 // Check if this is a descendant of this frame.
1738 // If not, win will be set to NULL.
1739 while (win)
1740 {
1741 if (win == ancestor)
1742 break;
1743 else
1744 win = win->GetParent();
1745 }
1746 if (win == NULL)
1747 focusWin = NULL;
1748
1749 return focusWin;
1750 }
1751
1752 // ----------------------------------------------------------------------------
1753 // wxEventBlocker
1754 // ----------------------------------------------------------------------------
1755
1756 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1757 {
1758 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1759
1760 m_window = win;
1761
1762 Block(type);
1763 m_window->PushEventHandler(this);
1764 }
1765
1766 wxEventBlocker::~wxEventBlocker()
1767 {
1768 wxEvtHandler *popped = m_window->PopEventHandler(false);
1769 wxCHECK_RET(popped == this,
1770 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1771 }
1772
1773 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1774 {
1775 // should this event be blocked?
1776 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1777 {
1778 wxEventType t = (wxEventType)m_eventsToBlock[i];
1779 if ( t == wxEVT_ANY || t == event.GetEventType() )
1780 return true; // yes, it should: mark this event as processed
1781 }
1782
1783 return false;
1784 }
1785
1786 #endif // wxUSE_GUI
1787
wxWidgets (Impactor)