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Add a debug helper to show information about a GtkWidget under gdb.
[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/eventfilter.h"
29 #include "wx/evtloop.h"
30
31 #ifndef WX_PRECOMP
32 #include "wx/list.h"
33 #include "wx/log.h"
34 #include "wx/app.h"
35 #include "wx/utils.h"
36 #include "wx/stopwatch.h"
37 #include "wx/module.h"
38
39 #if wxUSE_GUI
40 #include "wx/window.h"
41 #include "wx/control.h"
42 #include "wx/dc.h"
43 #include "wx/spinbutt.h"
44 #include "wx/textctrl.h"
45 #include "wx/validate.h"
46 #endif // wxUSE_GUI
47 #endif
48
49 #include "wx/thread.h"
50
51 #if wxUSE_BASE
52 #include "wx/scopedptr.h"
53
54 wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
55 wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
56 #endif // wxUSE_BASE
57
58 // ----------------------------------------------------------------------------
59 // wxWin macros
60 // ----------------------------------------------------------------------------
61
62 #if wxUSE_BASE
63 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
64 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
65 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
66 IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxEvent)
67 #endif // wxUSE_BASE
68
69 #if wxUSE_GUI
70 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
95 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
96 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
97 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
98 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
99 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
100 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
101 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
102 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
103 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
104 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
105 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
106 #endif // wxUSE_GUI
107
108 #if wxUSE_BASE
109
110 const wxEventTable *wxEvtHandler::GetEventTable() const
111 { return &wxEvtHandler::sm_eventTable; }
112
113 const wxEventTable wxEvtHandler::sm_eventTable =
114 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
115
116 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
117 { return wxEvtHandler::sm_eventHashTable; }
118
119 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
120
121 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
122 { wxDECLARE_EVENT_TABLE_TERMINATOR() };
123
124
125 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
126 // leaked, so we need to manually clean up all event tables before checking for
127 // the memory leaks when using it, however this breaks re-initializing the
128 // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
129 // event tables won't be rebuilt the next time, so disable this by default
130 #if wxUSE_MEMORY_TRACING
131
132 class wxEventTableEntryModule: public wxModule
133 {
134 public:
135 wxEventTableEntryModule() { }
136 virtual bool OnInit() { return true; }
137 virtual void OnExit() { wxEventHashTable::ClearAll(); }
138
139 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
140 };
141
142 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
143
144 #endif // wxUSE_MEMORY_TRACING
145
146 // ----------------------------------------------------------------------------
147 // global variables
148 // ----------------------------------------------------------------------------
149
150 // common event types are defined here, other event types are defined by the
151 // components which use them
152
153 const wxEventType wxEVT_FIRST = 10000;
154 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
155 const wxEventType wxEVT_NULL = wxNewEventType();
156
157 wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent );
158
159 // Thread event
160 wxDEFINE_EVENT( wxEVT_THREAD, wxThreadEvent );
161
162 #endif // wxUSE_BASE
163
164 #if wxUSE_GUI
165
166 wxDEFINE_EVENT( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEvent );
167 wxDEFINE_EVENT( wxEVT_COMMAND_CHECKBOX_CLICKED, wxCommandEvent );
168 wxDEFINE_EVENT( wxEVT_COMMAND_CHOICE_SELECTED, wxCommandEvent );
169 wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_SELECTED, wxCommandEvent );
170 wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, wxCommandEvent );
171 wxDEFINE_EVENT( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, wxCommandEvent );
172 wxDEFINE_EVENT( wxEVT_COMMAND_MENU_SELECTED, wxCommandEvent );
173 wxDEFINE_EVENT( wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEvent );
174 wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBOX_SELECTED, wxCommandEvent );
175 wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBUTTON_SELECTED, wxCommandEvent );
176 wxDEFINE_EVENT( wxEVT_COMMAND_SCROLLBAR_UPDATED, wxCommandEvent );
177 wxDEFINE_EVENT( wxEVT_COMMAND_VLBOX_SELECTED, wxCommandEvent );
178 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_SELECTED, wxCommandEvent );
179 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_RCLICKED, wxCommandEvent );
180 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_ENTER, wxCommandEvent );
181 wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRL_UPDATED, wxCommandEvent );
182 wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED, wxCommandEvent );
183 wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED, wxCommandEvent );
184 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_DROPDOWN, wxCommandEvent);
185 wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_CLOSEUP, wxCommandEvent);
186
187 // Mouse event types
188 wxDEFINE_EVENT( wxEVT_LEFT_DOWN, wxMouseEvent );
189 wxDEFINE_EVENT( wxEVT_LEFT_UP, wxMouseEvent );
190 wxDEFINE_EVENT( wxEVT_MIDDLE_DOWN, wxMouseEvent );
191 wxDEFINE_EVENT( wxEVT_MIDDLE_UP, wxMouseEvent );
192 wxDEFINE_EVENT( wxEVT_RIGHT_DOWN, wxMouseEvent );
193 wxDEFINE_EVENT( wxEVT_RIGHT_UP, wxMouseEvent );
194 wxDEFINE_EVENT( wxEVT_MOTION, wxMouseEvent );
195 wxDEFINE_EVENT( wxEVT_ENTER_WINDOW, wxMouseEvent );
196 wxDEFINE_EVENT( wxEVT_LEAVE_WINDOW, wxMouseEvent );
197 wxDEFINE_EVENT( wxEVT_LEFT_DCLICK, wxMouseEvent );
198 wxDEFINE_EVENT( wxEVT_MIDDLE_DCLICK, wxMouseEvent );
199 wxDEFINE_EVENT( wxEVT_RIGHT_DCLICK, wxMouseEvent );
200 wxDEFINE_EVENT( wxEVT_SET_FOCUS, wxFocusEvent );
201 wxDEFINE_EVENT( wxEVT_KILL_FOCUS, wxFocusEvent );
202 wxDEFINE_EVENT( wxEVT_CHILD_FOCUS, wxChildFocusEvent );
203 wxDEFINE_EVENT( wxEVT_MOUSEWHEEL, wxMouseEvent );
204 wxDEFINE_EVENT( wxEVT_AUX1_DOWN, wxMouseEvent );
205 wxDEFINE_EVENT( wxEVT_AUX1_UP, wxMouseEvent );
206 wxDEFINE_EVENT( wxEVT_AUX1_DCLICK, wxMouseEvent );
207 wxDEFINE_EVENT( wxEVT_AUX2_DOWN, wxMouseEvent );
208 wxDEFINE_EVENT( wxEVT_AUX2_UP, wxMouseEvent );
209 wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent );
210
211 // Character input event type
212 wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent );
213 wxDEFINE_EVENT( wxEVT_AFTER_CHAR, wxKeyEvent );
214 wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent );
215 wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent );
216 wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent );
217 wxDEFINE_EVENT( wxEVT_KEY_UP, wxKeyEvent );
218 #if wxUSE_HOTKEY
219 wxDEFINE_EVENT( wxEVT_HOTKEY, wxKeyEvent );
220 #endif
221
222 // Set cursor event
223 wxDEFINE_EVENT( wxEVT_SET_CURSOR, wxSetCursorEvent );
224
225 // wxScrollbar and wxSlider event identifiers
226 wxDEFINE_EVENT( wxEVT_SCROLL_TOP, wxScrollEvent );
227 wxDEFINE_EVENT( wxEVT_SCROLL_BOTTOM, wxScrollEvent );
228 wxDEFINE_EVENT( wxEVT_SCROLL_LINEUP, wxScrollEvent );
229 wxDEFINE_EVENT( wxEVT_SCROLL_LINEDOWN, wxScrollEvent );
230 wxDEFINE_EVENT( wxEVT_SCROLL_PAGEUP, wxScrollEvent );
231 wxDEFINE_EVENT( wxEVT_SCROLL_PAGEDOWN, wxScrollEvent );
232 wxDEFINE_EVENT( wxEVT_SCROLL_THUMBTRACK, wxScrollEvent );
233 wxDEFINE_EVENT( wxEVT_SCROLL_THUMBRELEASE, wxScrollEvent );
234 wxDEFINE_EVENT( wxEVT_SCROLL_CHANGED, wxScrollEvent );
235
236 // Due to a bug in older wx versions, wxSpinEvents were being sent with type of
237 // wxEVT_SCROLL_LINEUP, wxEVT_SCROLL_LINEDOWN and wxEVT_SCROLL_THUMBTRACK. But
238 // with the type-safe events in place, these event types are associated with
239 // wxScrollEvent. To allow handling of spin events, new event types have been
240 // defined in spinbutt.h/spinnbuttcmn.cpp. To maintain backward compatibility
241 // the spin event types are being initialized with the scroll event types.
242
243 #if wxUSE_SPINBTN
244
245 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_UP, wxSpinEvent, wxEVT_SCROLL_LINEUP );
246 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_DOWN, wxSpinEvent, wxEVT_SCROLL_LINEDOWN );
247 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN, wxSpinEvent, wxEVT_SCROLL_THUMBTRACK );
248
249 #endif // wxUSE_SPINBTN
250
251 // Scroll events from wxWindow
252 wxDEFINE_EVENT( wxEVT_SCROLLWIN_TOP, wxScrollWinEvent );
253 wxDEFINE_EVENT( wxEVT_SCROLLWIN_BOTTOM, wxScrollWinEvent );
254 wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEUP, wxScrollWinEvent );
255 wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEDOWN, wxScrollWinEvent );
256 wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEUP, wxScrollWinEvent );
257 wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEDOWN, wxScrollWinEvent );
258 wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBTRACK, wxScrollWinEvent );
259 wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBRELEASE, wxScrollWinEvent );
260
261 // System events
262 wxDEFINE_EVENT( wxEVT_SIZE, wxSizeEvent );
263 wxDEFINE_EVENT( wxEVT_SIZING, wxSizeEvent );
264 wxDEFINE_EVENT( wxEVT_MOVE, wxMoveEvent );
265 wxDEFINE_EVENT( wxEVT_MOVING, wxMoveEvent );
266 wxDEFINE_EVENT( wxEVT_MOVE_START, wxMoveEvent );
267 wxDEFINE_EVENT( wxEVT_MOVE_END, wxMoveEvent );
268 wxDEFINE_EVENT( wxEVT_CLOSE_WINDOW, wxCloseEvent );
269 wxDEFINE_EVENT( wxEVT_END_SESSION, wxCloseEvent );
270 wxDEFINE_EVENT( wxEVT_QUERY_END_SESSION, wxCloseEvent );
271 wxDEFINE_EVENT( wxEVT_HIBERNATE, wxActivateEvent );
272 wxDEFINE_EVENT( wxEVT_ACTIVATE_APP, wxActivateEvent );
273 wxDEFINE_EVENT( wxEVT_ACTIVATE, wxActivateEvent );
274 wxDEFINE_EVENT( wxEVT_CREATE, wxWindowCreateEvent );
275 wxDEFINE_EVENT( wxEVT_DESTROY, wxWindowDestroyEvent );
276 wxDEFINE_EVENT( wxEVT_SHOW, wxShowEvent );
277 wxDEFINE_EVENT( wxEVT_ICONIZE, wxIconizeEvent );
278 wxDEFINE_EVENT( wxEVT_MAXIMIZE, wxMaximizeEvent );
279 wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_CHANGED, wxMouseCaptureChangedEvent );
280 wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_LOST, wxMouseCaptureLostEvent );
281 wxDEFINE_EVENT( wxEVT_PAINT, wxPaintEvent );
282 wxDEFINE_EVENT( wxEVT_ERASE_BACKGROUND, wxEraseEvent );
283 wxDEFINE_EVENT( wxEVT_NC_PAINT, wxNcPaintEvent );
284 wxDEFINE_EVENT( wxEVT_MENU_OPEN, wxMenuEvent );
285 wxDEFINE_EVENT( wxEVT_MENU_CLOSE, wxMenuEvent );
286 wxDEFINE_EVENT( wxEVT_MENU_HIGHLIGHT, wxMenuEvent );
287 wxDEFINE_EVENT( wxEVT_CONTEXT_MENU, wxContextMenuEvent );
288 wxDEFINE_EVENT( wxEVT_SYS_COLOUR_CHANGED, wxSysColourChangedEvent );
289 wxDEFINE_EVENT( wxEVT_DISPLAY_CHANGED, wxDisplayChangedEvent );
290 wxDEFINE_EVENT( wxEVT_QUERY_NEW_PALETTE, wxQueryNewPaletteEvent );
291 wxDEFINE_EVENT( wxEVT_PALETTE_CHANGED, wxPaletteChangedEvent );
292 wxDEFINE_EVENT( wxEVT_JOY_BUTTON_DOWN, wxJoystickEvent );
293 wxDEFINE_EVENT( wxEVT_JOY_BUTTON_UP, wxJoystickEvent );
294 wxDEFINE_EVENT( wxEVT_JOY_MOVE, wxJoystickEvent );
295 wxDEFINE_EVENT( wxEVT_JOY_ZMOVE, wxJoystickEvent );
296 wxDEFINE_EVENT( wxEVT_DROP_FILES, wxDropFilesEvent );
297 wxDEFINE_EVENT( wxEVT_INIT_DIALOG, wxInitDialogEvent );
298 wxDEFINE_EVENT( wxEVT_UPDATE_UI, wxUpdateUIEvent );
299
300 // Clipboard events
301 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_COPY, wxClipboardTextEvent );
302 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_CUT, wxClipboardTextEvent );
303 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_PASTE, wxClipboardTextEvent );
304
305 // Generic command events
306 // Note: a click is a higher-level event than button down/up
307 wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_CLICK, wxCommandEvent );
308 wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_DCLICK, wxCommandEvent );
309 wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_CLICK, wxCommandEvent );
310 wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_DCLICK, wxCommandEvent );
311 wxDEFINE_EVENT( wxEVT_COMMAND_SET_FOCUS, wxCommandEvent );
312 wxDEFINE_EVENT( wxEVT_COMMAND_KILL_FOCUS, wxCommandEvent );
313 wxDEFINE_EVENT( wxEVT_COMMAND_ENTER, wxCommandEvent );
314
315 // Help events
316 wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent );
317 wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent );
318
319 #endif // wxUSE_GUI
320
321 #if wxUSE_BASE
322
323 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
324
325 // ============================================================================
326 // implementation
327 // ============================================================================
328
329 // ----------------------------------------------------------------------------
330 // event initialization
331 // ----------------------------------------------------------------------------
332
333 int wxNewEventType()
334 {
335 // MT-FIXME
336 static int s_lastUsedEventType = wxEVT_FIRST;
337
338 return s_lastUsedEventType++;
339 }
340 // ----------------------------------------------------------------------------
341 // wxEventFunctor
342 // ----------------------------------------------------------------------------
343
344 wxEventFunctor::~wxEventFunctor()
345 {
346 }
347
348 // ----------------------------------------------------------------------------
349 // wxEvent
350 // ----------------------------------------------------------------------------
351
352 /*
353 * General wxWidgets events, covering all interesting things that might happen
354 * (button clicking, resizing, setting text in widgets, etc.).
355 *
356 * For each completely new event type, derive a new event class.
357 *
358 */
359
360 wxEvent::wxEvent(int theId, wxEventType commandType)
361 {
362 m_eventType = commandType;
363 m_eventObject = NULL;
364 m_timeStamp = 0;
365 m_id = theId;
366 m_skipped = false;
367 m_callbackUserData = NULL;
368 m_handlerToProcessOnlyIn = NULL;
369 m_isCommandEvent = false;
370 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
371 m_wasProcessed = false;
372 }
373
374 wxEvent::wxEvent(const wxEvent& src)
375 : wxObject(src)
376 , m_eventObject(src.m_eventObject)
377 , m_eventType(src.m_eventType)
378 , m_timeStamp(src.m_timeStamp)
379 , m_id(src.m_id)
380 , m_callbackUserData(src.m_callbackUserData)
381 , m_handlerToProcessOnlyIn(NULL)
382 , m_propagationLevel(src.m_propagationLevel)
383 , m_skipped(src.m_skipped)
384 , m_isCommandEvent(src.m_isCommandEvent)
385 , m_wasProcessed(false)
386 {
387 }
388
389 wxEvent& wxEvent::operator=(const wxEvent& src)
390 {
391 wxObject::operator=(src);
392
393 m_eventObject = src.m_eventObject;
394 m_eventType = src.m_eventType;
395 m_timeStamp = src.m_timeStamp;
396 m_id = src.m_id;
397 m_callbackUserData = src.m_callbackUserData;
398 m_handlerToProcessOnlyIn = NULL;
399 m_propagationLevel = src.m_propagationLevel;
400 m_skipped = src.m_skipped;
401 m_isCommandEvent = src.m_isCommandEvent;
402
403 // don't change m_wasProcessed
404
405 return *this;
406 }
407
408 #endif // wxUSE_BASE
409
410 #if wxUSE_GUI
411
412 // ----------------------------------------------------------------------------
413 // wxCommandEvent
414 // ----------------------------------------------------------------------------
415
416 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
417 : wxEvent(theId, commandType)
418 {
419 m_clientData = NULL;
420 m_clientObject = NULL;
421 m_isCommandEvent = true;
422
423 // the command events are propagated upwards by default
424 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
425 }
426
427 wxString wxCommandEvent::GetString() const
428 {
429 if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
430 {
431 return m_cmdString;
432 }
433 else
434 {
435 #if wxUSE_TEXTCTRL
436 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
437 if ( txt )
438 return txt->GetValue();
439 else
440 #endif // wxUSE_TEXTCTRL
441 return m_cmdString;
442 }
443 }
444
445 // ----------------------------------------------------------------------------
446 // wxUpdateUIEvent
447 // ----------------------------------------------------------------------------
448
449 #if wxUSE_LONGLONG
450 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
451 #endif
452
453 long wxUpdateUIEvent::sm_updateInterval = 0;
454
455 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
456
457 // Can we update?
458 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
459 {
460 // Don't update if we've switched global updating off
461 // and this window doesn't support updates.
462 if (win &&
463 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
464 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
465 return false;
466
467 // Don't update children of the hidden windows: this is useless as any
468 // change to their state won't be seen by the user anyhow. Notice that this
469 // argument doesn't apply to the hidden windows (with visible parent)
470 // themselves as they could be shown by their EVT_UPDATE_UI handler.
471 if ( win->GetParent() && !win->GetParent()->IsShownOnScreen() )
472 return false;
473
474 if (sm_updateInterval == -1)
475 return false;
476
477 if (sm_updateInterval == 0)
478 return true;
479
480 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
481 wxLongLong now = wxGetLocalTimeMillis();
482 if (now > (sm_lastUpdate + sm_updateInterval))
483 {
484 return true;
485 }
486
487 return false;
488 #else
489 // If we don't have wxStopWatch or wxLongLong, we
490 // should err on the safe side and update now anyway.
491 return true;
492 #endif
493 }
494
495 // Reset the update time to provide a delay until the next
496 // time we should update
497 void wxUpdateUIEvent::ResetUpdateTime()
498 {
499 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
500 if (sm_updateInterval > 0)
501 {
502 wxLongLong now = wxGetLocalTimeMillis();
503 if (now > (sm_lastUpdate + sm_updateInterval))
504 {
505 sm_lastUpdate = now;
506 }
507 }
508 #endif
509 }
510
511 // ----------------------------------------------------------------------------
512 // wxScrollEvent
513 // ----------------------------------------------------------------------------
514
515 wxScrollEvent::wxScrollEvent(wxEventType commandType,
516 int id,
517 int pos,
518 int orient)
519 : wxCommandEvent(commandType, id)
520 {
521 m_extraLong = orient;
522 m_commandInt = pos;
523 }
524
525 // ----------------------------------------------------------------------------
526 // wxScrollWinEvent
527 // ----------------------------------------------------------------------------
528
529 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
530 int pos,
531 int orient)
532 {
533 m_eventType = commandType;
534 m_extraLong = orient;
535 m_commandInt = pos;
536 }
537
538 // ----------------------------------------------------------------------------
539 // wxMouseEvent
540 // ----------------------------------------------------------------------------
541
542 wxMouseEvent::wxMouseEvent(wxEventType commandType)
543 {
544 m_eventType = commandType;
545
546 m_x = 0;
547 m_y = 0;
548
549 m_leftDown = false;
550 m_middleDown = false;
551 m_rightDown = false;
552 m_aux1Down = false;
553 m_aux2Down = false;
554
555 m_clickCount = -1;
556
557 m_wheelAxis = wxMOUSE_WHEEL_VERTICAL;
558 m_wheelRotation = 0;
559 m_wheelDelta = 0;
560 m_linesPerAction = 0;
561 }
562
563 void wxMouseEvent::Assign(const wxMouseEvent& event)
564 {
565 wxEvent::operator=(event);
566
567 // Borland C++ 5.82 doesn't compile an explicit call to an implicitly
568 // defined operator=() so need to do it this way:
569 *static_cast<wxMouseState *>(this) = event;
570
571 m_x = event.m_x;
572 m_y = event.m_y;
573
574 m_leftDown = event.m_leftDown;
575 m_middleDown = event.m_middleDown;
576 m_rightDown = event.m_rightDown;
577 m_aux1Down = event.m_aux1Down;
578 m_aux2Down = event.m_aux2Down;
579
580 m_wheelRotation = event.m_wheelRotation;
581 m_wheelDelta = event.m_wheelDelta;
582 m_linesPerAction = event.m_linesPerAction;
583 m_wheelAxis = event.m_wheelAxis;
584 }
585
586 // return true if was a button dclick event
587 bool wxMouseEvent::ButtonDClick(int but) const
588 {
589 switch (but)
590 {
591 default:
592 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
593 // fall through
594
595 case wxMOUSE_BTN_ANY:
596 return (LeftDClick() || MiddleDClick() || RightDClick() ||
597 Aux1DClick() || Aux2DClick());
598
599 case wxMOUSE_BTN_LEFT:
600 return LeftDClick();
601
602 case wxMOUSE_BTN_MIDDLE:
603 return MiddleDClick();
604
605 case wxMOUSE_BTN_RIGHT:
606 return RightDClick();
607
608 case wxMOUSE_BTN_AUX1:
609 return Aux1DClick();
610
611 case wxMOUSE_BTN_AUX2:
612 return Aux2DClick();
613 }
614 }
615
616 // return true if was a button down event
617 bool wxMouseEvent::ButtonDown(int but) const
618 {
619 switch (but)
620 {
621 default:
622 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
623 // fall through
624
625 case wxMOUSE_BTN_ANY:
626 return (LeftDown() || MiddleDown() || RightDown() ||
627 Aux1Down() || Aux2Down());
628
629 case wxMOUSE_BTN_LEFT:
630 return LeftDown();
631
632 case wxMOUSE_BTN_MIDDLE:
633 return MiddleDown();
634
635 case wxMOUSE_BTN_RIGHT:
636 return RightDown();
637
638 case wxMOUSE_BTN_AUX1:
639 return Aux1Down();
640
641 case wxMOUSE_BTN_AUX2:
642 return Aux2Down();
643 }
644 }
645
646 // return true if was a button up event
647 bool wxMouseEvent::ButtonUp(int but) const
648 {
649 switch (but)
650 {
651 default:
652 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
653 // fall through
654
655 case wxMOUSE_BTN_ANY:
656 return (LeftUp() || MiddleUp() || RightUp() ||
657 Aux1Up() || Aux2Up());
658
659 case wxMOUSE_BTN_LEFT:
660 return LeftUp();
661
662 case wxMOUSE_BTN_MIDDLE:
663 return MiddleUp();
664
665 case wxMOUSE_BTN_RIGHT:
666 return RightUp();
667
668 case wxMOUSE_BTN_AUX1:
669 return Aux1Up();
670
671 case wxMOUSE_BTN_AUX2:
672 return Aux2Up();
673 }
674 }
675
676 // return true if the given button is currently changing state
677 bool wxMouseEvent::Button(int but) const
678 {
679 switch (but)
680 {
681 default:
682 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
683 // fall through
684
685 case wxMOUSE_BTN_ANY:
686 return ButtonUp(wxMOUSE_BTN_ANY) ||
687 ButtonDown(wxMOUSE_BTN_ANY) ||
688 ButtonDClick(wxMOUSE_BTN_ANY);
689
690 case wxMOUSE_BTN_LEFT:
691 return LeftDown() || LeftUp() || LeftDClick();
692
693 case wxMOUSE_BTN_MIDDLE:
694 return MiddleDown() || MiddleUp() || MiddleDClick();
695
696 case wxMOUSE_BTN_RIGHT:
697 return RightDown() || RightUp() || RightDClick();
698
699 case wxMOUSE_BTN_AUX1:
700 return Aux1Down() || Aux1Up() || Aux1DClick();
701
702 case wxMOUSE_BTN_AUX2:
703 return Aux2Down() || Aux2Up() || Aux2DClick();
704 }
705 }
706
707 int wxMouseEvent::GetButton() const
708 {
709 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
710 {
711 if ( Button(i) )
712 {
713 return i;
714 }
715 }
716
717 return wxMOUSE_BTN_NONE;
718 }
719
720 // Find the logical position of the event given the DC
721 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
722 {
723 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
724 return pt;
725 }
726
727 // ----------------------------------------------------------------------------
728 // wxKeyEvent
729 // ----------------------------------------------------------------------------
730
731 wxKeyEvent::wxKeyEvent(wxEventType type)
732 {
733 m_eventType = type;
734 m_keyCode = WXK_NONE;
735 #if wxUSE_UNICODE
736 m_uniChar = WXK_NONE;
737 #endif
738
739 m_x =
740 m_y = wxDefaultCoord;
741 m_hasPosition = false;
742
743 InitPropagation();
744 }
745
746 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
747 : wxEvent(evt),
748 wxKeyboardState(evt)
749 {
750 DoAssignMembers(evt);
751
752 InitPropagation();
753 }
754
755 wxKeyEvent::wxKeyEvent(wxEventType eventType, const wxKeyEvent& evt)
756 : wxEvent(evt),
757 wxKeyboardState(evt)
758 {
759 DoAssignMembers(evt);
760
761 m_eventType = eventType;
762
763 InitPropagation();
764 }
765
766 void wxKeyEvent::InitPositionIfNecessary() const
767 {
768 if ( m_hasPosition )
769 return;
770
771 // We're const because we're called from const Get[XY]() methods but we
772 // need to update the "cached" values.
773 wxKeyEvent& self = const_cast<wxKeyEvent&>(*this);
774 self.m_hasPosition = true;
775
776 // The only position we can possibly associate with the keyboard event on
777 // the platforms where it doesn't carry it already is the mouse position.
778 wxGetMousePosition(&self.m_x, &self.m_y);
779
780 // If this event is associated with a window, the position should be in its
781 // client coordinates, but otherwise leave it in screen coordinates as what
782 // else can we use?
783 wxWindow* const win = wxDynamicCast(GetEventObject(), wxWindow);
784 if ( win )
785 win->ScreenToClient(&self.m_x, &self.m_y);
786 }
787
788 wxCoord wxKeyEvent::GetX() const
789 {
790 InitPositionIfNecessary();
791
792 return m_x;
793 }
794
795 wxCoord wxKeyEvent::GetY() const
796 {
797 InitPositionIfNecessary();
798
799 return m_y;
800 }
801
802 bool wxKeyEvent::IsKeyInCategory(int category) const
803 {
804 switch ( GetKeyCode() )
805 {
806 case WXK_LEFT:
807 case WXK_RIGHT:
808 case WXK_UP:
809 case WXK_DOWN:
810 case WXK_NUMPAD_LEFT:
811 case WXK_NUMPAD_RIGHT:
812 case WXK_NUMPAD_UP:
813 case WXK_NUMPAD_DOWN:
814 return (category & WXK_CATEGORY_ARROW) != 0;
815
816 case WXK_PAGEDOWN:
817 case WXK_END:
818 case WXK_NUMPAD_PAGEUP:
819 case WXK_NUMPAD_PAGEDOWN:
820 return (category & WXK_CATEGORY_PAGING) != 0;
821
822 case WXK_HOME:
823 case WXK_PAGEUP:
824 case WXK_NUMPAD_HOME:
825 case WXK_NUMPAD_END:
826 return (category & WXK_CATEGORY_JUMP) != 0;
827
828 case WXK_TAB:
829 case WXK_NUMPAD_TAB:
830 return (category & WXK_CATEGORY_TAB) != 0;
831
832 case WXK_BACK:
833 case WXK_DELETE:
834 case WXK_NUMPAD_DELETE:
835 return (category & WXK_CATEGORY_CUT) != 0;
836
837 default:
838 return false;
839 }
840 }
841
842 // ----------------------------------------------------------------------------
843 // wxWindowCreateEvent
844 // ----------------------------------------------------------------------------
845
846 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
847 {
848 SetEventType(wxEVT_CREATE);
849 SetEventObject(win);
850 }
851
852 // ----------------------------------------------------------------------------
853 // wxWindowDestroyEvent
854 // ----------------------------------------------------------------------------
855
856 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
857 {
858 SetEventType(wxEVT_DESTROY);
859 SetEventObject(win);
860 }
861
862 // ----------------------------------------------------------------------------
863 // wxChildFocusEvent
864 // ----------------------------------------------------------------------------
865
866 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
867 : wxCommandEvent(wxEVT_CHILD_FOCUS)
868 {
869 SetEventObject(win);
870 }
871
872 // ----------------------------------------------------------------------------
873 // wxHelpEvent
874 // ----------------------------------------------------------------------------
875
876 /* static */
877 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
878 {
879 if ( origin == Origin_Unknown )
880 {
881 // assume that the event comes from the help button if it's not from
882 // keyboard and that pressing F1 always results in the help event
883 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
884 }
885
886 return origin;
887 }
888
889 #endif // wxUSE_GUI
890
891
892 #if wxUSE_BASE
893
894 // ----------------------------------------------------------------------------
895 // wxEventHashTable
896 // ----------------------------------------------------------------------------
897
898 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
899
900 wxEventHashTable* wxEventHashTable::sm_first = NULL;
901
902 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
903 : m_table(table),
904 m_rebuildHash(true)
905 {
906 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
907
908 m_next = sm_first;
909 if (m_next)
910 m_next->m_previous = this;
911 sm_first = this;
912 }
913
914 wxEventHashTable::~wxEventHashTable()
915 {
916 if (m_next)
917 m_next->m_previous = m_previous;
918 if (m_previous)
919 m_previous->m_next = m_next;
920 if (sm_first == this)
921 sm_first = m_next;
922
923 Clear();
924 }
925
926 void wxEventHashTable::Clear()
927 {
928 for ( size_t i = 0; i < m_size; i++ )
929 {
930 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
931 delete eTTnode;
932 }
933
934 wxDELETEA(m_eventTypeTable);
935
936 m_size = 0;
937 }
938
939 #if wxUSE_MEMORY_TRACING
940
941 // Clear all tables
942 void wxEventHashTable::ClearAll()
943 {
944 wxEventHashTable* table = sm_first;
945 while (table)
946 {
947 table->Clear();
948 table = table->m_next;
949 }
950 }
951
952 #endif // wxUSE_MEMORY_TRACING
953
954 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
955 {
956 if (m_rebuildHash)
957 {
958 InitHashTable();
959 m_rebuildHash = false;
960 }
961
962 if (!m_eventTypeTable)
963 return false;
964
965 // Find all entries for the given event type.
966 wxEventType eventType = event.GetEventType();
967 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
968 if (eTTnode && eTTnode->eventType == eventType)
969 {
970 // Now start the search for an event handler
971 // that can handle an event with the given ID.
972 const wxEventTableEntryPointerArray&
973 eventEntryTable = eTTnode->eventEntryTable;
974
975 const size_t count = eventEntryTable.GetCount();
976 for (size_t n = 0; n < count; n++)
977 {
978 const wxEventTableEntry& entry = *eventEntryTable[n];
979 if ( wxEvtHandler::ProcessEventIfMatchesId(entry, self, event) )
980 return true;
981 }
982 }
983
984 return false;
985 }
986
987 void wxEventHashTable::InitHashTable()
988 {
989 // Loop over the event tables and all its base tables.
990 const wxEventTable *table = &m_table;
991 while (table)
992 {
993 // Retrieve all valid event handler entries
994 const wxEventTableEntry *entry = table->entries;
995 while (entry->m_fn != 0)
996 {
997 // Add the event entry in the Hash.
998 AddEntry(*entry);
999
1000 entry++;
1001 }
1002
1003 table = table->baseTable;
1004 }
1005
1006 // Let's free some memory.
1007 size_t i;
1008 for(i = 0; i < m_size; i++)
1009 {
1010 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
1011 if (eTTnode)
1012 {
1013 eTTnode->eventEntryTable.Shrink();
1014 }
1015 }
1016 }
1017
1018 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
1019 {
1020 // This might happen 'accidentally' as the app is exiting
1021 if (!m_eventTypeTable)
1022 return;
1023
1024 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
1025 EventTypeTablePointer eTTnode = *peTTnode;
1026
1027 if (eTTnode)
1028 {
1029 if (eTTnode->eventType != entry.m_eventType)
1030 {
1031 // Resize the table!
1032 GrowEventTypeTable();
1033 // Try again to add it.
1034 AddEntry(entry);
1035 return;
1036 }
1037 }
1038 else
1039 {
1040 eTTnode = new EventTypeTable;
1041 eTTnode->eventType = entry.m_eventType;
1042 *peTTnode = eTTnode;
1043 }
1044
1045 // Fill all hash entries between entry.m_id and entry.m_lastId...
1046 eTTnode->eventEntryTable.Add(&entry);
1047 }
1048
1049 void wxEventHashTable::AllocEventTypeTable(size_t size)
1050 {
1051 m_eventTypeTable = new EventTypeTablePointer[size];
1052 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
1053 m_size = size;
1054 }
1055
1056 void wxEventHashTable::GrowEventTypeTable()
1057 {
1058 size_t oldSize = m_size;
1059 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
1060
1061 // TODO: Search the most optimal grow sequence
1062 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
1063
1064 for ( size_t i = 0; i < oldSize; /* */ )
1065 {
1066 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
1067 if (eTToldNode)
1068 {
1069 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1070 EventTypeTablePointer eTTnode = *peTTnode;
1071
1072 // Check for collision, we don't want any.
1073 if (eTTnode)
1074 {
1075 GrowEventTypeTable();
1076 continue; // Don't increment the counter,
1077 // as we still need to add this element.
1078 }
1079 else
1080 {
1081 // Get the old value and put it in the new table.
1082 *peTTnode = oldEventTypeTable[i];
1083 }
1084 }
1085
1086 i++;
1087 }
1088
1089 delete[] oldEventTypeTable;
1090 }
1091
1092 // ----------------------------------------------------------------------------
1093 // wxEvtHandler
1094 // ----------------------------------------------------------------------------
1095
1096 wxEvtHandler::wxEvtHandler()
1097 {
1098 m_nextHandler = NULL;
1099 m_previousHandler = NULL;
1100 m_enabled = true;
1101 m_dynamicEvents = NULL;
1102 m_pendingEvents = NULL;
1103
1104 // no client data (yet)
1105 m_clientData = NULL;
1106 m_clientDataType = wxClientData_None;
1107 }
1108
1109 wxEvtHandler::~wxEvtHandler()
1110 {
1111 Unlink();
1112
1113 if (m_dynamicEvents)
1114 {
1115 for ( wxList::iterator it = m_dynamicEvents->begin(),
1116 end = m_dynamicEvents->end();
1117 it != end;
1118 ++it )
1119 {
1120 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1121
1122 // Remove ourselves from sink destructor notifications
1123 // (this has usually been done, in wxTrackable destructor)
1124 wxEvtHandler *eventSink = entry->m_fn->GetEvtHandler();
1125 if ( eventSink )
1126 {
1127 wxEventConnectionRef * const
1128 evtConnRef = FindRefInTrackerList(eventSink);
1129 if ( evtConnRef )
1130 {
1131 eventSink->RemoveNode(evtConnRef);
1132 delete evtConnRef;
1133 }
1134 }
1135
1136 delete entry->m_callbackUserData;
1137 delete entry;
1138 }
1139 delete m_dynamicEvents;
1140 }
1141
1142 // Remove us from the list of the pending events if necessary.
1143 if (wxTheApp)
1144 wxTheApp->RemovePendingEventHandler(this);
1145
1146 DeletePendingEvents();
1147
1148 // we only delete object data, not untyped
1149 if ( m_clientDataType == wxClientData_Object )
1150 delete m_clientObject;
1151 }
1152
1153 void wxEvtHandler::Unlink()
1154 {
1155 // this event handler must take itself out of the chain of handlers:
1156
1157 if (m_previousHandler)
1158 m_previousHandler->SetNextHandler(m_nextHandler);
1159
1160 if (m_nextHandler)
1161 m_nextHandler->SetPreviousHandler(m_previousHandler);
1162
1163 m_nextHandler = NULL;
1164 m_previousHandler = NULL;
1165 }
1166
1167 bool wxEvtHandler::IsUnlinked() const
1168 {
1169 return m_previousHandler == NULL &&
1170 m_nextHandler == NULL;
1171 }
1172
1173 wxEventFilter* wxEvtHandler::ms_filterList = NULL;
1174
1175 /* static */ void wxEvtHandler::AddFilter(wxEventFilter* filter)
1176 {
1177 wxCHECK_RET( filter, "NULL filter" );
1178
1179 filter->m_next = ms_filterList;
1180 ms_filterList = filter;
1181 }
1182
1183 /* static */ void wxEvtHandler::RemoveFilter(wxEventFilter* filter)
1184 {
1185 wxEventFilter* prev = NULL;
1186 for ( wxEventFilter* f = ms_filterList; f; f = f->m_next )
1187 {
1188 if ( f == filter )
1189 {
1190 // Set the previous list element or the list head to the next
1191 // element.
1192 if ( prev )
1193 prev->m_next = f->m_next;
1194 else
1195 ms_filterList = f->m_next;
1196
1197 // Also reset the next pointer in the filter itself just to avoid
1198 // having possibly dangling pointers, even though it's not strictly
1199 // necessary.
1200 f->m_next = NULL;
1201
1202 // Skip the assert below.
1203 return;
1204 }
1205
1206 prev = f;
1207 }
1208
1209 wxFAIL_MSG( "Filter not found" );
1210 }
1211
1212 #if wxUSE_THREADS
1213
1214 bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1215 {
1216 // check that we are really in a child thread
1217 wxASSERT_MSG( !wxThread::IsMain(),
1218 wxT("use ProcessEvent() in main thread") );
1219
1220 AddPendingEvent(event);
1221
1222 return true;
1223 }
1224
1225 #endif // wxUSE_THREADS
1226
1227 void wxEvtHandler::QueueEvent(wxEvent *event)
1228 {
1229 wxCHECK_RET( event, "NULL event can't be posted" );
1230
1231 if (!wxTheApp)
1232 {
1233 // we need an event loop which manages the list of event handlers with
1234 // pending events... cannot proceed without it!
1235 wxLogDebug("No application object! Cannot queue this event!");
1236
1237 // anyway delete the given event to avoid memory leaks
1238 delete event;
1239
1240 return;
1241 }
1242
1243 // 1) Add this event to our list of pending events
1244 wxENTER_CRIT_SECT( m_pendingEventsLock );
1245
1246 if ( !m_pendingEvents )
1247 m_pendingEvents = new wxList;
1248
1249 m_pendingEvents->Append(event);
1250
1251 // 2) Add this event handler to list of event handlers that
1252 // have pending events.
1253
1254 wxTheApp->AppendPendingEventHandler(this);
1255
1256 // only release m_pendingEventsLock now because otherwise there is a race
1257 // condition as described in the ticket #9093: we could process the event
1258 // just added to m_pendingEvents in our ProcessPendingEvents() below before
1259 // we had time to append this pointer to wxHandlersWithPendingEvents list; thus
1260 // breaking the invariant that a handler should be in the list iff it has
1261 // any pending events to process
1262 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1263
1264 // 3) Inform the system that new pending events are somewhere,
1265 // and that these should be processed in idle time.
1266 wxWakeUpIdle();
1267 }
1268
1269 void wxEvtHandler::DeletePendingEvents()
1270 {
1271 if (m_pendingEvents)
1272 m_pendingEvents->DeleteContents(true);
1273 wxDELETE(m_pendingEvents);
1274 }
1275
1276 void wxEvtHandler::ProcessPendingEvents()
1277 {
1278 if (!wxTheApp)
1279 {
1280 // we need an event loop which manages the list of event handlers with
1281 // pending events... cannot proceed without it!
1282 wxLogDebug("No application object! Cannot process pending events!");
1283 return;
1284 }
1285
1286 // we need to process only a single pending event in this call because
1287 // each call to ProcessEvent() could result in the destruction of this
1288 // same event handler (see the comment at the end of this function)
1289
1290 wxENTER_CRIT_SECT( m_pendingEventsLock );
1291
1292 // this method is only called by wxApp if this handler does have
1293 // pending events
1294 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1295 "should have pending events if called" );
1296
1297 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1298 wxEvent* pEvent = static_cast<wxEvent *>(node->GetData());
1299
1300 // find the first event which can be processed now:
1301 wxEventLoopBase* evtLoop = wxEventLoopBase::GetActive();
1302 if (evtLoop && evtLoop->IsYielding())
1303 {
1304 while (node && pEvent && !evtLoop->IsEventAllowedInsideYield(pEvent->GetEventCategory()))
1305 {
1306 node = node->GetNext();
1307 pEvent = node ? static_cast<wxEvent *>(node->GetData()) : NULL;
1308 }
1309
1310 if (!node)
1311 {
1312 // all our events are NOT processable now... signal this:
1313 wxTheApp->DelayPendingEventHandler(this);
1314
1315 // see the comment at the beginning of evtloop.h header for the
1316 // logic behind YieldFor() and behind DelayPendingEventHandler()
1317
1318 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1319
1320 return;
1321 }
1322 }
1323
1324 wxEventPtr event(pEvent);
1325
1326 // it's important we remove event from list before processing it, else a
1327 // nested event loop, for example from a modal dialog, might process the
1328 // same event again.
1329 m_pendingEvents->Erase(node);
1330
1331 if ( m_pendingEvents->IsEmpty() )
1332 {
1333 // if there are no more pending events left, we don't need to
1334 // stay in this list
1335 wxTheApp->RemovePendingEventHandler(this);
1336 }
1337
1338 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1339
1340 ProcessEvent(*event);
1341
1342 // careful: this object could have been deleted by the event handler
1343 // executed by the above ProcessEvent() call, so we can't access any fields
1344 // of this object any more
1345 }
1346
1347 /* static */
1348 bool wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry,
1349 wxEvtHandler *handler,
1350 wxEvent& event)
1351 {
1352 int tableId1 = entry.m_id,
1353 tableId2 = entry.m_lastId;
1354
1355 // match only if the event type is the same and the id is either -1 in
1356 // the event table (meaning "any") or the event id matches the id
1357 // specified in the event table either exactly or by falling into
1358 // range between first and last
1359 if ((tableId1 == wxID_ANY) ||
1360 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1361 (tableId2 != wxID_ANY &&
1362 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1363 {
1364 event.Skip(false);
1365 event.m_callbackUserData = entry.m_callbackUserData;
1366
1367 #if wxUSE_EXCEPTIONS
1368 if ( wxTheApp )
1369 {
1370 // call the handler via wxApp method which allows the user to catch
1371 // any exceptions which may be thrown by any handler in the program
1372 // in one place
1373 wxTheApp->CallEventHandler(handler, *entry.m_fn, event);
1374 }
1375 else
1376 #endif // wxUSE_EXCEPTIONS
1377 {
1378 (*entry.m_fn)(handler, event);
1379 }
1380
1381 if (!event.GetSkipped())
1382 return true;
1383 }
1384
1385 return false;
1386 }
1387
1388 bool wxEvtHandler::DoTryApp(wxEvent& event)
1389 {
1390 if ( wxTheApp && (this != wxTheApp) )
1391 {
1392 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1393 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1394 // processed appropriately via SearchEventTable.
1395 if ( event.GetEventType() != wxEVT_IDLE )
1396 {
1397 if ( wxTheApp->ProcessEvent(event) )
1398 return true;
1399 }
1400 }
1401
1402 return false;
1403 }
1404
1405 bool wxEvtHandler::TryBefore(wxEvent& event)
1406 {
1407 #if WXWIN_COMPATIBILITY_2_8
1408 // call the old virtual function to keep the code overriding it working
1409 return TryValidator(event);
1410 #else
1411 wxUnusedVar(event);
1412 return false;
1413 #endif
1414 }
1415
1416 bool wxEvtHandler::TryAfter(wxEvent& event)
1417 {
1418 // We only want to pass the window to the application object once even if
1419 // there are several chained handlers. Ensure that this is what happens by
1420 // only calling DoTryApp() if there is no next handler (which would do it).
1421 //
1422 // Notice that, unlike simply calling TryAfter() on the last handler in the
1423 // chain only from ProcessEvent(), this also works with wxWindow object in
1424 // the middle of the chain: its overridden TryAfter() will still be called
1425 // and propagate the event upwards the window hierarchy even if it's not
1426 // the last one in the chain (which, admittedly, shouldn't happen often).
1427 if ( GetNextHandler() )
1428 return GetNextHandler()->TryAfter(event);
1429
1430 #if WXWIN_COMPATIBILITY_2_8
1431 // as above, call the old virtual function for compatibility
1432 return TryParent(event);
1433 #else
1434 return DoTryApp(event);
1435 #endif
1436 }
1437
1438 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1439 {
1440 // The very first thing we do is to allow any registered filters to hook
1441 // into event processing in order to globally pre-process all events.
1442 //
1443 // Note that we should only do it if we're the first event handler called
1444 // to avoid calling FilterEvent() multiple times as the event goes through
1445 // the event handler chain and possibly upwards the window hierarchy.
1446 if ( !event.WasProcessed() )
1447 {
1448 for ( wxEventFilter* f = ms_filterList; f; f = f->m_next )
1449 {
1450 int rc = f->FilterEvent(event);
1451 if ( rc != wxEventFilter::Event_Skip )
1452 {
1453 wxASSERT_MSG( rc == wxEventFilter::Event_Ignore ||
1454 rc == wxEventFilter::Event_Processed,
1455 "unexpected FilterEvent() return value" );
1456
1457 return rc != wxEventFilter::Event_Ignore;
1458 }
1459 //else: proceed normally
1460 }
1461 }
1462
1463 // Short circuit the event processing logic if we're requested to process
1464 // this event in this handler only, see DoTryChain() for more details.
1465 if ( event.ShouldProcessOnlyIn(this) )
1466 return TryBeforeAndHere(event);
1467
1468
1469 // Try to process the event in this handler itself.
1470 if ( ProcessEventLocally(event) )
1471 {
1472 // It is possible that DoTryChain() called from ProcessEventLocally()
1473 // returned true but the event was not really processed: this happens
1474 // if a custom handler ignores the request to process the event in this
1475 // handler only and in this case we should skip the post processing
1476 // done in TryAfter() but still return the correct value ourselves to
1477 // indicate whether we did or did not find a handler for this event.
1478 return !event.GetSkipped();
1479 }
1480
1481 // If we still didn't find a handler, propagate the event upwards the
1482 // window chain and/or to the application object.
1483 if ( TryAfter(event) )
1484 return true;
1485
1486
1487 // No handler found anywhere, bail out.
1488 return false;
1489 }
1490
1491 bool wxEvtHandler::ProcessEventLocally(wxEvent& event)
1492 {
1493 // Try the hooks which should be called before our own handlers and this
1494 // handler itself first. Notice that we should not call ProcessEvent() on
1495 // this one as we're already called from it, which explains why we do it
1496 // here and not in DoTryChain()
1497 return TryBeforeAndHere(event) || DoTryChain(event);
1498 }
1499
1500 bool wxEvtHandler::DoTryChain(wxEvent& event)
1501 {
1502 for ( wxEvtHandler *h = GetNextHandler(); h; h = h->GetNextHandler() )
1503 {
1504 // We need to process this event at the level of this handler only
1505 // right now, the pre-/post-processing was either already done by
1506 // ProcessEvent() from which we were called or will be done by it when
1507 // we return.
1508 //
1509 // However we must call ProcessEvent() and not TryHereOnly() because the
1510 // existing code (including some in wxWidgets itself) expects the
1511 // overridden ProcessEvent() in its custom event handlers pushed on a
1512 // window to be called.
1513 //
1514 // So we must call ProcessEvent() but it must not do what it usually
1515 // does. To resolve this paradox we set up a special flag inside the
1516 // object itself to let ProcessEvent() know that it shouldn't do any
1517 // pre/post-processing for this event if it gets it. Note that this
1518 // only applies to this handler, if the event is passed to another one
1519 // by explicitly calling its ProcessEvent(), pre/post-processing should
1520 // be done as usual.
1521 //
1522 // Final complication is that if the implementation of ProcessEvent()
1523 // called wxEvent::DidntHonourProcessOnlyIn() (as the gross hack that
1524 // is wxScrollHelperEvtHandler::ProcessEvent() does) and ignored our
1525 // request to process event in this handler only, we have to compensate
1526 // for it by not processing the event further because this was already
1527 // done by that rogue event handler.
1528 wxEventProcessInHandlerOnly processInHandlerOnly(event, h);
1529 if ( h->ProcessEvent(event) )
1530 {
1531 // Make sure "skipped" flag is not set as the event was really
1532 // processed in this case. Normally it shouldn't be set anyhow but
1533 // make sure just in case the user code does something strange.
1534 event.Skip(false);
1535
1536 return true;
1537 }
1538
1539 if ( !event.ShouldProcessOnlyIn(h) )
1540 {
1541 // Still return true to indicate that no further processing should
1542 // be undertaken but ensure that "skipped" flag is set so that the
1543 // caller knows that the event was not really processed.
1544 event.Skip();
1545
1546 return true;
1547 }
1548 }
1549
1550 return false;
1551 }
1552
1553 bool wxEvtHandler::TryHereOnly(wxEvent& event)
1554 {
1555 // If the event handler is disabled it doesn't process any events
1556 if ( !GetEvtHandlerEnabled() )
1557 return false;
1558
1559 // Handle per-instance dynamic event tables first
1560 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1561 return true;
1562
1563 // Then static per-class event tables
1564 if ( GetEventHashTable().HandleEvent(event, this) )
1565 return true;
1566
1567 // We don't have a handler for this event.
1568 return false;
1569 }
1570
1571 bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1572 {
1573 #if wxUSE_EXCEPTIONS
1574 try
1575 {
1576 #endif
1577 return ProcessEvent(event);
1578 #if wxUSE_EXCEPTIONS
1579 }
1580 catch ( ... )
1581 {
1582 // notice that we do it in 2 steps to avoid warnings about possibly
1583 // uninitialized loop variable from some versions of g++ which are not
1584 // smart enough to figure out that GetActive() doesn't throw and so
1585 // that loop will always be initialized
1586 wxEventLoopBase *loop = NULL;
1587 try
1588 {
1589 loop = wxEventLoopBase::GetActive();
1590
1591 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1592 {
1593 if ( loop )
1594 loop->Exit();
1595 }
1596 //else: continue running current event loop
1597
1598 return false;
1599 }
1600 catch ( ... )
1601 {
1602 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1603 // exception again: very good, but we still need Exit() to
1604 // be called
1605 if ( loop )
1606 loop->Exit();
1607 throw;
1608 }
1609 }
1610 #endif // wxUSE_EXCEPTIONS
1611 }
1612
1613 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1614 {
1615 const wxEventType eventType = event.GetEventType();
1616 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1617 {
1618 const wxEventTableEntry& entry = table.entries[i];
1619 if ( eventType == entry.m_eventType )
1620 {
1621 if ( ProcessEventIfMatchesId(entry, this, event) )
1622 return true;
1623 }
1624 }
1625
1626 return false;
1627 }
1628
1629 void wxEvtHandler::DoBind(int id,
1630 int lastId,
1631 wxEventType eventType,
1632 wxEventFunctor *func,
1633 wxObject *userData)
1634 {
1635 wxDynamicEventTableEntry *entry =
1636 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData);
1637
1638 if (!m_dynamicEvents)
1639 m_dynamicEvents = new wxList;
1640
1641 // Insert at the front of the list so most recent additions are found first
1642 m_dynamicEvents->Insert( (wxObject*) entry );
1643
1644 // Make sure we get to know when a sink is destroyed
1645 wxEvtHandler *eventSink = func->GetEvtHandler();
1646 if ( eventSink && eventSink != this )
1647 {
1648 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1649 if ( evtConnRef )
1650 evtConnRef->IncRef( );
1651 else
1652 new wxEventConnectionRef(this, eventSink);
1653 }
1654 }
1655
1656 bool
1657 wxEvtHandler::DoUnbind(int id,
1658 int lastId,
1659 wxEventType eventType,
1660 const wxEventFunctor& func,
1661 wxObject *userData)
1662 {
1663 if (!m_dynamicEvents)
1664 return false;
1665
1666 // Remove connection from tracker node (wxEventConnectionRef)
1667 wxEvtHandler *eventSink = func.GetEvtHandler();
1668 if ( eventSink && eventSink != this )
1669 {
1670 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1671 if ( evtConnRef )
1672 evtConnRef->DecRef();
1673 }
1674
1675 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1676 while (node)
1677 {
1678 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1679
1680 if ((entry->m_id == id) &&
1681 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1682 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1683 entry->m_fn->IsMatching(func) &&
1684 ((entry->m_callbackUserData == userData) || !userData))
1685 {
1686 delete entry->m_callbackUserData;
1687 m_dynamicEvents->Erase( node );
1688 delete entry;
1689 return true;
1690 }
1691 node = node->GetNext();
1692 }
1693 return false;
1694 }
1695
1696 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1697 {
1698 wxCHECK_MSG( m_dynamicEvents, false,
1699 wxT("caller should check that we have dynamic events") );
1700
1701 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1702 while (node)
1703 {
1704 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1705
1706 // get next node before (maybe) calling the event handler as it could
1707 // call Disconnect() invalidating the current node
1708 node = node->GetNext();
1709
1710 if ( event.GetEventType() == entry->m_eventType )
1711 {
1712 wxEvtHandler *handler = entry->m_fn->GetEvtHandler();
1713 if ( !handler )
1714 handler = this;
1715 if ( ProcessEventIfMatchesId(*entry, handler, event) )
1716 return true;
1717 }
1718 }
1719
1720 return false;
1721 }
1722
1723 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1724 {
1725 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1726 wxT("can't have both object and void client data") );
1727
1728 if ( m_clientObject )
1729 delete m_clientObject;
1730
1731 m_clientObject = data;
1732 m_clientDataType = wxClientData_Object;
1733 }
1734
1735 wxClientData *wxEvtHandler::DoGetClientObject() const
1736 {
1737 // it's not an error to call GetClientObject() on a window which doesn't
1738 // have client data at all - NULL will be returned
1739 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1740 wxT("this window doesn't have object client data") );
1741
1742 return m_clientObject;
1743 }
1744
1745 void wxEvtHandler::DoSetClientData( void *data )
1746 {
1747 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1748 wxT("can't have both object and void client data") );
1749
1750 m_clientData = data;
1751 m_clientDataType = wxClientData_Void;
1752 }
1753
1754 void *wxEvtHandler::DoGetClientData() const
1755 {
1756 // it's not an error to call GetClientData() on a window which doesn't have
1757 // client data at all - NULL will be returned
1758 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1759 wxT("this window doesn't have void client data") );
1760
1761 return m_clientData;
1762 }
1763
1764 // A helper to find an wxEventConnectionRef object
1765 wxEventConnectionRef *
1766 wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1767 {
1768 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1769 {
1770 // we only want wxEventConnectionRef nodes here
1771 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1772 if ( evtConnRef && evtConnRef->m_src == this )
1773 {
1774 wxASSERT( evtConnRef->m_sink==eventSink );
1775 return evtConnRef;
1776 }
1777 }
1778
1779 return NULL;
1780 }
1781
1782 void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1783 {
1784 wxASSERT(m_dynamicEvents);
1785
1786 // remove all connections with this sink
1787 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1788 while (node)
1789 {
1790 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1791 node_nxt = node->GetNext();
1792
1793 if ( entry->m_fn->GetEvtHandler() == sink )
1794 {
1795 delete entry->m_callbackUserData;
1796 m_dynamicEvents->Erase( node );
1797 delete entry;
1798 }
1799 node = node_nxt;
1800 }
1801 }
1802
1803 #endif // wxUSE_BASE
1804
1805 #if wxUSE_GUI
1806
1807 // Find a window with the focus, that is also a descendant of the given window.
1808 // This is used to determine the window to initially send commands to.
1809 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1810 {
1811 // Process events starting with the window with the focus, if any.
1812 wxWindow* focusWin = wxWindow::FindFocus();
1813 wxWindow* win = focusWin;
1814
1815 // Check if this is a descendant of this frame.
1816 // If not, win will be set to NULL.
1817 while (win)
1818 {
1819 if (win == ancestor)
1820 break;
1821 else
1822 win = win->GetParent();
1823 }
1824 if (win == NULL)
1825 focusWin = NULL;
1826
1827 return focusWin;
1828 }
1829
1830 // ----------------------------------------------------------------------------
1831 // wxEventBlocker
1832 // ----------------------------------------------------------------------------
1833
1834 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1835 {
1836 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1837
1838 m_window = win;
1839
1840 Block(type);
1841 m_window->PushEventHandler(this);
1842 }
1843
1844 wxEventBlocker::~wxEventBlocker()
1845 {
1846 wxEvtHandler *popped = m_window->PopEventHandler(false);
1847 wxCHECK_RET(popped == this,
1848 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1849 }
1850
1851 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1852 {
1853 // should this event be blocked?
1854 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1855 {
1856 wxEventType t = (wxEventType)m_eventsToBlock[i];
1857 if ( t == wxEVT_ANY || t == event.GetEventType() )
1858 return true; // yes, it should: mark this event as processed
1859 }
1860
1861 return false;
1862 }
1863
1864 #endif // wxUSE_GUI
1865
wxWidgets (Impactor)