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/app.h"
  33     #include "wx/utils.h"
  34     #include "wx/stopwatch.h"
  35     #include "wx/module.h"
  36
  37     #if wxUSE_GUI
  38         #include "wx/window.h"
  39         #include "wx/control.h"
  40         #include "wx/dc.h"
  41         #include "wx/textctrl.h"
  42         #include "wx/validate.h"
  43     #endif // wxUSE_GUI
  44 #endif
  45
  46 #include "wx/thread.h"
  47
  48 #if wxUSE_BASE
  49     #include "wx/ptr_scpd.h"
  50
  51     wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
  52     wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
  53 #endif // wxUSE_BASE
  54
  55 // ----------------------------------------------------------------------------
  56 // wxWin macros
  57 // ----------------------------------------------------------------------------
  58
  59 #if wxUSE_BASE
  60     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  61     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  62     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  63 #endif // wxUSE_BASE
  64
  65 #if wxUSE_GUI
  66     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  67     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  68     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  69     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  70     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  91     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  92     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  93     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  94     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
  95     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
  96     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
  97     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
  98     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
  99     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
 100     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
 101     IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
 102 #endif // wxUSE_GUI
 103
 104 #if wxUSE_BASE
 105
 106 const wxEventTable *wxEvtHandler::GetEventTable() const
 107     { return &wxEvtHandler::sm_eventTable; }
 108
 109 const wxEventTable wxEvtHandler::sm_eventTable =
 110     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 111
 112 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 113     { return wxEvtHandler::sm_eventHashTable; }
 114
 115 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 116
 117 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 118     { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 119
 120
 121 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
 122 // leaked, so we need to manually clean up all event tables before checking for
 123 // the memory leaks when using it, however this breaks re-initializing the
 124 // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
 125 // event tables won't be rebuilt the next time, so disable this by default
 126 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 127
 128 class wxEventTableEntryModule: public wxModule
 129 {
 130 public:
 131     wxEventTableEntryModule() { }
 132     virtual bool OnInit() { return true; }
 133     virtual void OnExit() { wxEventHashTable::ClearAll(); }
 134
 135     DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 136 };
 137
 138 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 139
 140 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
 141
 142 // ----------------------------------------------------------------------------
 143 // global variables
 144 // ----------------------------------------------------------------------------
 145
 146 // List containing event handlers with pending events (each handler can occur
 147 // at most once here)
 148 wxList *wxPendingEvents = NULL;
 149
 150 #if wxUSE_THREADS
 151     // protects wxPendingEvents list
 152     wxCriticalSection *wxPendingEventsLocker = NULL;
 153 #endif
 154
 155 // common event types are defined here, other event types are defined by the
 156 // components which use them
 157
 158 const wxEventType wxEVT_FIRST = 10000;
 159 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 160
 161 DEFINE_EVENT_TYPE(wxEVT_NULL)
 162 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 163 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 164 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 165
 166 #endif // wxUSE_BASE
 167
 168 #if wxUSE_GUI
 169
 170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 179 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 180 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 181 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 182 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 183 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 184 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 185 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 186 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
 187
 188 // Mouse event types
 189 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 190 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 191 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 192 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 193 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 194 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 195 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 196 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 197 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 198 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 199 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 200 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 201 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 202 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 203 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 204 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 205 DEFINE_EVENT_TYPE(wxEVT_AUX1_DOWN)
 206 DEFINE_EVENT_TYPE(wxEVT_AUX1_UP)
 207 DEFINE_EVENT_TYPE(wxEVT_AUX1_DCLICK)
 208 DEFINE_EVENT_TYPE(wxEVT_AUX2_DOWN)
 209 DEFINE_EVENT_TYPE(wxEVT_AUX2_UP)
 210 DEFINE_EVENT_TYPE(wxEVT_AUX2_DCLICK)
 211
 212 // Non-client mouse events
 213 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 214 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 215 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 216 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 217 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 218 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 219 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 220 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 221 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 222 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 223 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 224 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 225
 226 // Character input event type
 227 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 228 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 229 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 230 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 231 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 232 #if wxUSE_HOTKEY
 233 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 234 #endif
 235
 236 // Set cursor event
 237 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 238
 239 // wxScrollbar and wxSlider event identifiers
 240 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 243 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 244 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 245 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 246 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 247 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 248 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
 249
 250 // Scroll events from wxWindow
 251 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 252 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 253 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 254 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 255 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 256 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 257 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 258 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 259
 260 // System events
 261 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 262 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 263 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 264 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 265 DEFINE_EVENT_TYPE(wxEVT_MOVE_START)
 266 DEFINE_EVENT_TYPE(wxEVT_MOVE_END)
 267 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 268 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 269 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 270 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
 271 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 272 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 273 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 274 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 275 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 276 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 277 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 278 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 279 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
 280 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 281 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 282 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 283 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 284 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 285 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 286 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 287 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 288 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 289 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 290 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 291 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 292 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 293 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 294 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 295 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 296 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 297 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 298 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 299 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 300 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 301 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 302 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 303
 304 // Clipboard events
 305 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
 306 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
 307 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
 308
 309 // Generic command events
 310 // Note: a click is a higher-level event than button down/up
 311 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 312 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 313 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 314 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 315 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 316 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 317 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 318
 319 // Help events
 320 DEFINE_EVENT_TYPE(wxEVT_HELP)
 321 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 322
 323 #endif // wxUSE_GUI
 324
 325 #if wxUSE_BASE
 326
 327 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 328
 329 // ============================================================================
 330 // implementation
 331 // ============================================================================
 332
 333 // ----------------------------------------------------------------------------
 334 // event initialization
 335 // ----------------------------------------------------------------------------
 336
 337 int wxNewEventType()
 338 {
 339     // MT-FIXME
 340     static int s_lastUsedEventType = wxEVT_FIRST;
 341
 342     return s_lastUsedEventType++;
 343 }
 344
 345 // ----------------------------------------------------------------------------
 346 // wxEvent
 347 // ----------------------------------------------------------------------------
 348
 349 /*
 350  * General wxWidgets events, covering
 351  * all interesting things that might happen (button clicking, resizing,
 352  * setting text in widgets, etc.).
 353  *
 354  * For each completely new event type, derive a new event class.
 355  *
 356  */
 357
 358 wxEvent::wxEvent(int theId, wxEventType commandType )
 359 {
 360     m_eventType = commandType;
 361     m_eventObject = (wxObject *) NULL;
 362     m_timeStamp = 0;
 363     m_id = theId;
 364     m_skipped = false;
 365     m_callbackUserData = (wxObject *) NULL;
 366     m_isCommandEvent = false;
 367     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 368 }
 369
 370 wxEvent::wxEvent(const wxEvent &src)
 371     : wxObject(src)
 372     , m_eventObject(src.m_eventObject)
 373     , m_eventType(src.m_eventType)
 374     , m_timeStamp(src.m_timeStamp)
 375     , m_id(src.m_id)
 376     , m_callbackUserData(src.m_callbackUserData)
 377     , m_propagationLevel(src.m_propagationLevel)
 378     , m_skipped(src.m_skipped)
 379     , m_isCommandEvent(src.m_isCommandEvent)
 380 {
 381 }
 382
 383 #endif // wxUSE_BASE
 384
 385 #if wxUSE_GUI
 386
 387 /*
 388  * Command events
 389  *
 390  */
 391
 392 #ifdef __VISUALC__
 393     // 'this' : used in base member initializer list (for m_commandString)
 394     #pragma warning(disable:4355)
 395 #endif
 396
 397 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 398               : wxEvent(theId, commandType)
 399 {
 400     m_clientData = (char *) NULL;
 401     m_clientObject = (wxClientData *) NULL;
 402     m_extraLong = 0;
 403     m_commandInt = 0;
 404     m_isCommandEvent = true;
 405
 406     // the command events are propagated upwards by default
 407     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 408 }
 409
 410 #ifdef __VISUALC__
 411     #pragma warning(default:4355)
 412 #endif
 413
 414 wxString wxCommandEvent::GetString() const
 415 {
 416     if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
 417     {
 418         return m_cmdString;
 419     }
 420     else
 421     {
 422 #if wxUSE_TEXTCTRL
 423         wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
 424         if ( txt )
 425             return txt->GetValue();
 426         else
 427 #endif // wxUSE_TEXTCTRL
 428             return m_cmdString;
 429     }
 430 }
 431
 432 /*
 433  * UI update events
 434  */
 435
 436 #if wxUSE_LONGLONG
 437 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 438 #endif
 439
 440 long wxUpdateUIEvent::sm_updateInterval = 0;
 441
 442 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 443
 444 // Can we update?
 445 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
 446 {
 447     // Don't update if we've switched global updating off
 448     // and this window doesn't support updates.
 449     if (win &&
 450        (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 451        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 452         return false;
 453
 454     if (sm_updateInterval == -1)
 455         return false;
 456
 457     if (sm_updateInterval == 0)
 458         return true;
 459
 460 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 461     wxLongLong now = wxGetLocalTimeMillis();
 462     if (now > (sm_lastUpdate + sm_updateInterval))
 463     {
 464         return true;
 465     }
 466
 467     return false;
 468 #else
 469     // If we don't have wxStopWatch or wxLongLong, we
 470     // should err on the safe side and update now anyway.
 471     return true;
 472 #endif
 473 }
 474
 475 // Reset the update time to provide a delay until the next
 476 // time we should update
 477 void wxUpdateUIEvent::ResetUpdateTime()
 478 {
 479 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 480     if (sm_updateInterval > 0)
 481     {
 482         wxLongLong now = wxGetLocalTimeMillis();
 483         if (now > (sm_lastUpdate + sm_updateInterval))
 484         {
 485             sm_lastUpdate = now;
 486         }
 487     }
 488 #endif
 489 }
 490
 491 /*
 492  * Scroll events
 493  */
 494
 495 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 496                              int id,
 497                              int pos,
 498                              int orient)
 499     : wxCommandEvent(commandType, id)
 500 {
 501     m_extraLong = orient;
 502     m_commandInt = pos;
 503 }
 504
 505 /*
 506  * ScrollWin events
 507  */
 508
 509 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 510                                    int pos,
 511                                    int orient)
 512 {
 513     m_eventType = commandType;
 514     m_extraLong = orient;
 515     m_commandInt = pos;
 516 }
 517
 518 /*
 519  * Mouse events
 520  *
 521  */
 522
 523 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 524 {
 525     m_eventType = commandType;
 526
 527     m_x = 0;
 528     m_y = 0;
 529
 530     m_leftDown = false;
 531     m_middleDown = false;
 532     m_rightDown = false;
 533     m_aux1Down = false;
 534     m_aux2Down = false;
 535
 536     m_controlDown = false;
 537     m_shiftDown = false;
 538     m_altDown = false;
 539     m_metaDown = false;
 540
 541     m_clickCount = -1;
 542
 543     m_wheelRotation = 0;
 544     m_wheelDelta = 0;
 545     m_linesPerAction = 0;
 546     m_wheelAxis = 0;
 547 }
 548
 549 void wxMouseEvent::Assign(const wxMouseEvent& event)
 550 {
 551     m_eventType = event.m_eventType;
 552
 553     m_x = event.m_x;
 554     m_y = event.m_y;
 555
 556     m_leftDown = event.m_leftDown;
 557     m_middleDown = event.m_middleDown;
 558     m_rightDown = event.m_rightDown;
 559     m_aux1Down = event.m_aux1Down;
 560     m_aux2Down = event.m_aux2Down;
 561
 562     m_controlDown = event.m_controlDown;
 563     m_shiftDown = event.m_shiftDown;
 564     m_altDown = event.m_altDown;
 565     m_metaDown = event.m_metaDown;
 566
 567     m_wheelRotation = event.m_wheelRotation;
 568     m_wheelDelta = event.m_wheelDelta;
 569     m_linesPerAction = event.m_linesPerAction;
 570     m_wheelAxis = event.m_wheelAxis;
 571 }
 572
 573 // return true if was a button dclick event
 574 bool wxMouseEvent::ButtonDClick(int but) const
 575 {
 576     switch (but)
 577     {
 578         default:
 579             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 580             // fall through
 581
 582         case wxMOUSE_BTN_ANY:
 583             return (LeftDClick() || MiddleDClick() || RightDClick() ||
 584                     Aux1DClick() || Aux2DClick());
 585
 586         case wxMOUSE_BTN_LEFT:
 587             return LeftDClick();
 588
 589         case wxMOUSE_BTN_MIDDLE:
 590             return MiddleDClick();
 591
 592         case wxMOUSE_BTN_RIGHT:
 593             return RightDClick();
 594
 595         case wxMOUSE_BTN_AUX1:
 596             return Aux1DClick();
 597
 598         case wxMOUSE_BTN_AUX2:
 599             return Aux2DClick();
 600     }
 601 }
 602
 603 // return true if was a button down event
 604 bool wxMouseEvent::ButtonDown(int but) const
 605 {
 606     switch (but)
 607     {
 608         default:
 609             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 610             // fall through
 611
 612         case wxMOUSE_BTN_ANY:
 613             return (LeftDown() || MiddleDown() || RightDown() ||
 614                     Aux1Down() || Aux2Down());
 615
 616         case wxMOUSE_BTN_LEFT:
 617             return LeftDown();
 618
 619         case wxMOUSE_BTN_MIDDLE:
 620             return MiddleDown();
 621
 622         case wxMOUSE_BTN_RIGHT:
 623             return RightDown();
 624
 625         case wxMOUSE_BTN_AUX1:
 626             return Aux1Down();
 627
 628         case wxMOUSE_BTN_AUX2:
 629             return Aux2Down();
 630     }
 631 }
 632
 633 // return true if was a button up event
 634 bool wxMouseEvent::ButtonUp(int but) const
 635 {
 636     switch (but)
 637     {
 638         default:
 639             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 640             // fall through
 641
 642         case wxMOUSE_BTN_ANY:
 643             return (LeftUp() || MiddleUp() || RightUp() ||
 644                     Aux1Up() || Aux2Up());
 645
 646         case wxMOUSE_BTN_LEFT:
 647             return LeftUp();
 648
 649         case wxMOUSE_BTN_MIDDLE:
 650             return MiddleUp();
 651
 652         case wxMOUSE_BTN_RIGHT:
 653             return RightUp();
 654
 655         case wxMOUSE_BTN_AUX1:
 656             return Aux1Up();
 657
 658         case wxMOUSE_BTN_AUX2:
 659             return Aux2Up();
 660     }
 661 }
 662
 663 // return true if the given button is currently changing state
 664 bool wxMouseEvent::Button(int but) const
 665 {
 666     switch (but)
 667     {
 668         default:
 669             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 670             // fall through
 671
 672         case wxMOUSE_BTN_ANY:
 673             return ButtonUp(wxMOUSE_BTN_ANY) ||
 674                     ButtonDown(wxMOUSE_BTN_ANY) ||
 675                         ButtonDClick(wxMOUSE_BTN_ANY);
 676
 677         case wxMOUSE_BTN_LEFT:
 678             return LeftDown() || LeftUp() || LeftDClick();
 679
 680         case wxMOUSE_BTN_MIDDLE:
 681             return MiddleDown() || MiddleUp() || MiddleDClick();
 682
 683         case wxMOUSE_BTN_RIGHT:
 684             return RightDown() || RightUp() || RightDClick();
 685
 686         case wxMOUSE_BTN_AUX1:
 687            return Aux1Down() || Aux1Up() || Aux1DClick();
 688
 689         case wxMOUSE_BTN_AUX2:
 690            return Aux2Down() || Aux2Up() || Aux2DClick();
 691     }
 692 }
 693
 694 bool wxMouseEvent::ButtonIsDown(int but) const
 695 {
 696     switch (but)
 697     {
 698         default:
 699             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 700             // fall through
 701
 702         case wxMOUSE_BTN_ANY:
 703             return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down();
 704
 705         case wxMOUSE_BTN_LEFT:
 706             return LeftIsDown();
 707
 708         case wxMOUSE_BTN_MIDDLE:
 709             return MiddleIsDown();
 710
 711         case wxMOUSE_BTN_RIGHT:
 712             return RightIsDown();
 713
 714         case wxMOUSE_BTN_AUX1:
 715             return Aux1IsDown();
 716
 717         case wxMOUSE_BTN_AUX2:
 718             return Aux2IsDown();
 719     }
 720 }
 721
 722 int wxMouseEvent::GetButton() const
 723 {
 724     for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
 725     {
 726         if ( Button(i) )
 727         {
 728             return i;
 729         }
 730     }
 731
 732     return wxMOUSE_BTN_NONE;
 733 }
 734
 735 // Find the logical position of the event given the DC
 736 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 737 {
 738     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 739     return pt;
 740 }
 741
 742
 743 /*
 744  * Keyboard event
 745  *
 746  */
 747
 748 wxKeyEvent::wxKeyEvent(wxEventType type)
 749 {
 750     m_eventType = type;
 751     m_shiftDown = false;
 752     m_controlDown = false;
 753     m_metaDown = false;
 754     m_altDown = false;
 755     m_keyCode = 0;
 756     m_scanCode = 0;
 757 #if wxUSE_UNICODE
 758     m_uniChar = 0;
 759 #endif
 760 }
 761
 762 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 763     : wxEvent(evt)
 764 {
 765     m_x = evt.m_x;
 766     m_y = evt.m_y;
 767
 768     m_keyCode = evt.m_keyCode;
 769
 770     m_controlDown = evt.m_controlDown;
 771     m_shiftDown = evt.m_shiftDown;
 772     m_altDown = evt.m_altDown;
 773     m_metaDown = evt.m_metaDown;
 774     m_scanCode = evt.m_scanCode;
 775     m_rawCode = evt.m_rawCode;
 776     m_rawFlags = evt.m_rawFlags;
 777
 778 #if wxUSE_UNICODE
 779     m_uniChar = evt.m_uniChar;
 780 #endif
 781 }
 782
 783 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 784 {
 785     SetEventType(wxEVT_CREATE);
 786     SetEventObject(win);
 787 }
 788
 789 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 790 {
 791     SetEventType(wxEVT_DESTROY);
 792     SetEventObject(win);
 793 }
 794
 795 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 796                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 797 {
 798     SetEventObject(win);
 799 }
 800
 801 // ----------------------------------------------------------------------------
 802 // wxHelpEvent
 803 // ----------------------------------------------------------------------------
 804
 805 /* static */
 806 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
 807 {
 808     if ( origin == Origin_Unknown )
 809     {
 810         // assume that the event comes from the help button if it's not from
 811         // keyboard and that pressing F1 always results in the help event
 812         origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
 813     }
 814
 815     return origin;
 816 }
 817
 818 #endif // wxUSE_GUI
 819
 820
 821 #if wxUSE_BASE
 822
 823 // ----------------------------------------------------------------------------
 824 // wxEventHashTable
 825 // ----------------------------------------------------------------------------
 826
 827 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 828
 829 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 830
 831 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 832                 : m_table(table),
 833                   m_rebuildHash(true)
 834 {
 835     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 836
 837     m_next = sm_first;
 838     if (m_next)
 839         m_next->m_previous = this;
 840     sm_first = this;
 841 }
 842
 843 wxEventHashTable::~wxEventHashTable()
 844 {
 845     if (m_next)
 846         m_next->m_previous = m_previous;
 847     if (m_previous)
 848         m_previous->m_next = m_next;
 849     if (sm_first == this)
 850         sm_first = m_next;
 851
 852     Clear();
 853 }
 854
 855 void wxEventHashTable::Clear()
 856 {
 857     for ( size_t i = 0; i < m_size; i++ )
 858     {
 859         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 860         delete eTTnode;
 861     }
 862
 863     delete[] m_eventTypeTable;
 864     m_eventTypeTable = NULL;
 865
 866     m_size = 0;
 867 }
 868
 869 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 870
 871 // Clear all tables
 872 void wxEventHashTable::ClearAll()
 873 {
 874     wxEventHashTable* table = sm_first;
 875     while (table)
 876     {
 877         table->Clear();
 878         table = table->m_next;
 879     }
 880 }
 881
 882 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
 883
 884 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 885 {
 886     if (m_rebuildHash)
 887     {
 888         InitHashTable();
 889         m_rebuildHash = false;
 890     }
 891
 892     if (!m_eventTypeTable)
 893         return false;
 894
 895     // Find all entries for the given event type.
 896     wxEventType eventType = event.GetEventType();
 897     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 898     if (eTTnode && eTTnode->eventType == eventType)
 899     {
 900         // Now start the search for an event handler
 901         // that can handle an event with the given ID.
 902         const wxEventTableEntryPointerArray&
 903             eventEntryTable = eTTnode->eventEntryTable;
 904
 905         const size_t count = eventEntryTable.GetCount();
 906         for (size_t n = 0; n < count; n++)
 907         {
 908             if ( wxEvtHandler::
 909                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 910             {
 911                 return true;
 912             }
 913         }
 914     }
 915
 916     return false;
 917 }
 918
 919 void wxEventHashTable::InitHashTable()
 920 {
 921     // Loop over the event tables and all its base tables.
 922     const wxEventTable *table = &m_table;
 923     while (table)
 924     {
 925         // Retrieve all valid event handler entries
 926         const wxEventTableEntry *entry = table->entries;
 927         while (entry->m_fn != 0)
 928         {
 929             // Add the event entry in the Hash.
 930             AddEntry(*entry);
 931
 932             entry++;
 933         }
 934
 935         table = table->baseTable;
 936     }
 937
 938     // Lets free some memory.
 939     size_t i;
 940     for(i = 0; i < m_size; i++)
 941     {
 942         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 943         if (eTTnode)
 944         {
 945             eTTnode->eventEntryTable.Shrink();
 946         }
 947     }
 948 }
 949
 950 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 951 {
 952     // This might happen 'accidentally' as the app is exiting
 953     if (!m_eventTypeTable)
 954         return;
 955
 956     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 957     EventTypeTablePointer  eTTnode = *peTTnode;
 958
 959     if (eTTnode)
 960     {
 961         if (eTTnode->eventType != entry.m_eventType)
 962         {
 963             // Resize the table!
 964             GrowEventTypeTable();
 965             // Try again to add it.
 966             AddEntry(entry);
 967             return;
 968         }
 969     }
 970     else
 971     {
 972         eTTnode = new EventTypeTable;
 973         eTTnode->eventType = entry.m_eventType;
 974         *peTTnode = eTTnode;
 975     }
 976
 977     // Fill all hash entries between entry.m_id and entry.m_lastId...
 978     eTTnode->eventEntryTable.Add(&entry);
 979 }
 980
 981 void wxEventHashTable::AllocEventTypeTable(size_t size)
 982 {
 983     m_eventTypeTable = new EventTypeTablePointer[size];
 984     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 985     m_size = size;
 986 }
 987
 988 void wxEventHashTable::GrowEventTypeTable()
 989 {
 990     size_t oldSize = m_size;
 991     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 992
 993     // TODO: Search the most optimal grow sequence
 994     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 995
 996     for ( size_t i = 0; i < oldSize; /* */ )
 997     {
 998         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
 999         if (eTToldNode)
1000         {
1001             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1002             EventTypeTablePointer  eTTnode = *peTTnode;
1003
1004             // Check for collision, we don't want any.
1005             if (eTTnode)
1006             {
1007                 GrowEventTypeTable();
1008                 continue; // Don't increment the counter,
1009                           // as we still need to add this element.
1010             }
1011             else
1012             {
1013                 // Get the old value and put it in the new table.
1014                 *peTTnode = oldEventTypeTable[i];
1015             }
1016         }
1017
1018         i++;
1019     }
1020
1021     delete[] oldEventTypeTable;
1022 }
1023
1024 // ----------------------------------------------------------------------------
1025 // wxEvtHandler
1026 // ----------------------------------------------------------------------------
1027
1028 /*
1029  * Event handler
1030  */
1031
1032 wxEvtHandler::wxEvtHandler()
1033 {
1034     m_nextHandler = (wxEvtHandler *) NULL;
1035     m_previousHandler = (wxEvtHandler *) NULL;
1036     m_enabled = true;
1037     m_dynamicEvents = (wxList *) NULL;
1038     m_pendingEvents = (wxList *) NULL;
1039
1040     // no client data (yet)
1041     m_clientData = NULL;
1042     m_clientDataType = wxClientData_None;
1043 }
1044
1045 wxEvtHandler::~wxEvtHandler()
1046 {
1047     // Takes itself out of the list of handlers
1048     if (m_previousHandler)
1049         m_previousHandler->m_nextHandler = m_nextHandler;
1050
1051     if (m_nextHandler)
1052         m_nextHandler->m_previousHandler = m_previousHandler;
1053
1054     if (m_dynamicEvents)
1055     {
1056         for ( wxList::iterator it = m_dynamicEvents->begin(),
1057                                end = m_dynamicEvents->end();
1058               it != end;
1059               ++it )
1060         {
1061             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1062
1063 #if wxUSE_WEAKREF
1064             // Remove ourselves from sink destructor notifications
1065             // (this has usually been been done, in wxTrackable destructor)
1066             wxEvtHandler *eventSink = entry->m_eventSink;
1067             if ( eventSink )
1068             {
1069                 wxEventConnectionRef * const
1070                     evtConnRef = FindRefInTrackerList(eventSink);
1071                 if ( evtConnRef )
1072                 {
1073                     eventSink->RemoveNode(evtConnRef);
1074                     delete evtConnRef;
1075                 }
1076             }
1077 #endif // wxUSE_WEAKREF
1078
1079             if (entry->m_callbackUserData)
1080                 delete entry->m_callbackUserData;
1081             delete entry;
1082         }
1083         delete m_dynamicEvents;
1084     };
1085
1086     if (m_pendingEvents)
1087         m_pendingEvents->DeleteContents(true);
1088     delete m_pendingEvents;
1089
1090     // Remove us from wxPendingEvents if necessary.
1091     if ( wxPendingEvents )
1092     {
1093 #if wxUSE_THREADS
1094         if (wxPendingEventsLocker)
1095             wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1096 #endif
1097
1098         if ( wxPendingEvents->DeleteObject(this) )
1099         {
1100             // check that we were present only once in the list
1101             wxASSERT_MSG( !wxPendingEvents->Find(this),
1102                           "Handler occurs twice in wxPendingEvents list" );
1103         }
1104         //else: we weren't in this list at all, it's ok
1105
1106 #if wxUSE_THREADS
1107         if (wxPendingEventsLocker)
1108             wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1109 #endif
1110     }
1111
1112     // we only delete object data, not untyped
1113     if ( m_clientDataType == wxClientData_Object )
1114         delete m_clientObject;
1115 }
1116
1117 #if wxUSE_THREADS
1118
1119 bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1120 {
1121     // check that we are really in a child thread
1122     wxASSERT_MSG( !wxThread::IsMain(),
1123                   wxT("use ProcessEvent() in main thread") );
1124
1125     AddPendingEvent(event);
1126
1127     return true;
1128 }
1129
1130 #endif // wxUSE_THREADS
1131
1132 void wxEvtHandler::AddPendingEvent(const wxEvent& event)
1133 {
1134     // 1) Add event to list of pending events of this event handler
1135
1136     wxEvent *eventCopy = event.Clone();
1137
1138     // we must be able to copy the events here so the event class must
1139     // implement Clone() properly instead of just providing a NULL stab for it
1140     wxCHECK_RET( eventCopy,
1141                  _T("events of this type aren't supposed to be posted") );
1142
1143     wxENTER_CRIT_SECT( m_pendingEventsLock );
1144
1145     if ( !m_pendingEvents )
1146       m_pendingEvents = new wxList;
1147
1148     m_pendingEvents->Append(eventCopy);
1149
1150     wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1151
1152     // 2) Add this event handler to list of event handlers that
1153     //    have pending events.
1154
1155     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1156
1157     if ( !wxPendingEvents )
1158         wxPendingEvents = new wxList;
1159     if ( !wxPendingEvents->Find(this) )
1160         wxPendingEvents->Append(this);
1161
1162     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1163
1164     // 3) Inform the system that new pending events are somewhere,
1165     //    and that these should be processed in idle time.
1166     wxWakeUpIdle();
1167 }
1168
1169 void wxEvtHandler::ProcessPendingEvents()
1170 {
1171     wxENTER_CRIT_SECT( m_pendingEventsLock );
1172
1173     // this method is only called by wxApp if this handler does have
1174     // pending events
1175     wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1176                  "should have pending events if called" );
1177
1178     wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1179     wxEventPtr event(wx_static_cast(wxEvent *, node->GetData()));
1180
1181     // it's important we remove event from list before processing it, else a
1182     // nested event loop, for example from a modal dialog, might process the
1183     // same event again.
1184     m_pendingEvents->Erase(node);
1185
1186     // if there are no more pending events left, we don't need to stay in this
1187     // list
1188     if ( m_pendingEvents->IsEmpty() )
1189         wxPendingEvents->DeleteObject(this);
1190
1191     wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1192
1193     ProcessEvent(*event);
1194
1195     // careful: this object could have been deleted by the event handler
1196     // executed by the above ProcessEvent() call, so we can't access any fields
1197     // of this object any more
1198 }
1199
1200 /*
1201  * Event table stuff
1202  */
1203 /* static */ bool
1204 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1205                                     wxEvtHandler *handler,
1206                                     wxEvent& event)
1207 {
1208     int tableId1 = entry.m_id,
1209         tableId2 = entry.m_lastId;
1210
1211     // match only if the event type is the same and the id is either -1 in
1212     // the event table (meaning "any") or the event id matches the id
1213     // specified in the event table either exactly or by falling into
1214     // range between first and last
1215     if ((tableId1 == wxID_ANY) ||
1216         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1217         (tableId2 != wxID_ANY &&
1218          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1219     {
1220         event.Skip(false);
1221         event.m_callbackUserData = entry.m_callbackUserData;
1222
1223 #if wxUSE_EXCEPTIONS
1224         if ( wxTheApp )
1225         {
1226             // call the handler via wxApp method which allows the user to catch
1227             // any exceptions which may be thrown by any handler in the program
1228             // in one place
1229             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1230         }
1231         else
1232 #endif // wxUSE_EXCEPTIONS
1233         {
1234             // no need for an extra virtual function call
1235             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1236         }
1237
1238         if (!event.GetSkipped())
1239             return true;
1240     }
1241
1242     return false;
1243 }
1244
1245 bool wxEvtHandler::TryParent(wxEvent& event)
1246 {
1247     if ( wxTheApp && (this != wxTheApp) )
1248     {
1249         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1250         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1251         // processed appropriately via SearchEventTable.
1252         if ( event.GetEventType() != wxEVT_IDLE )
1253         {
1254             if ( wxTheApp->ProcessEvent(event) )
1255                 return true;
1256         }
1257     }
1258
1259     return false;
1260 }
1261
1262 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1263 {
1264     // allow the application to hook into event processing
1265     if ( wxTheApp )
1266     {
1267         int rc = wxTheApp->FilterEvent(event);
1268         if ( rc != -1 )
1269         {
1270             wxASSERT_MSG( rc == 1 || rc == 0,
1271                           _T("unexpected wxApp::FilterEvent return value") );
1272
1273             return rc != 0;
1274         }
1275         //else: proceed normally
1276     }
1277
1278     // An event handler can be enabled or disabled
1279     if ( GetEvtHandlerEnabled() )
1280     {
1281         // if we have a validator, it has higher priority than our own event
1282         // table
1283         if ( TryValidator(event) )
1284             return true;
1285
1286         // Handle per-instance dynamic event tables first
1287         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1288             return true;
1289
1290         // Then static per-class event tables
1291         if ( GetEventHashTable().HandleEvent(event, this) )
1292             return true;
1293     }
1294
1295     // Try going down the event handler chain
1296     if ( GetNextHandler() )
1297     {
1298         // notice that we shouldn't let the parent have the event even if the
1299         // next handler does not process it because it will have already passed
1300         // it to the parent in this case
1301         return GetNextHandler()->ProcessEvent(event);
1302     }
1303
1304     // Finally propagate the event upwards the window chain and/or to the
1305     // application object as necessary
1306     return TryParent(event);
1307 }
1308
1309 bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1310 {
1311 #if wxUSE_EXCEPTIONS
1312     try
1313     {
1314 #endif
1315         return ProcessEvent(event);
1316 #if wxUSE_EXCEPTIONS
1317     }
1318     catch ( ... )
1319     {
1320         wxEventLoopBase *loop = wxEventLoopBase::GetActive();
1321         try
1322         {
1323             if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1324             {
1325                 if ( loop )
1326                     loop->Exit();
1327             }
1328             //else: continue running current event loop
1329
1330             return false;
1331         }
1332         catch ( ... )
1333         {
1334             // OnExceptionInMainLoop() threw, possibly rethrowing the same
1335             // exception again: very good, but we still need Exit() to
1336             // be called
1337             if ( loop )
1338                 loop->Exit();
1339             throw;
1340         }
1341     }
1342 #endif // wxUSE_EXCEPTIONS
1343 }
1344
1345
1346 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1347 {
1348     const wxEventType eventType = event.GetEventType();
1349     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1350     {
1351         const wxEventTableEntry& entry = table.entries[i];
1352         if ( eventType == entry.m_eventType )
1353         {
1354             if ( ProcessEventIfMatches(entry, this, event) )
1355                 return true;
1356         }
1357     }
1358
1359     return false;
1360 }
1361
1362 void wxEvtHandler::Connect( int id, int lastId,
1363                             int eventType,
1364                             wxObjectEventFunction func,
1365                             wxObject *userData,
1366                             wxEvtHandler* eventSink )
1367 {
1368     wxDynamicEventTableEntry *entry =
1369         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1370
1371     if (!m_dynamicEvents)
1372         m_dynamicEvents = new wxList;
1373
1374     // Insert at the front of the list so most recent additions are found first
1375     m_dynamicEvents->Insert( (wxObject*) entry );
1376
1377 #if wxUSE_WEAKREF
1378     // Make sure we get to know when a sink is destroyed
1379     if ( eventSink )
1380     {
1381         wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1382         if ( evtConnRef )
1383             evtConnRef->IncRef( );
1384         else
1385             evtConnRef = new wxEventConnectionRef(this, eventSink);
1386     }
1387 #endif // wxUSE_WEAKREF
1388 }
1389
1390 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1391                   wxObjectEventFunction func,
1392                   wxObject *userData,
1393                   wxEvtHandler* eventSink )
1394 {
1395     if (!m_dynamicEvents)
1396         return false;
1397
1398 #if wxUSE_WEAKREF
1399     // Remove connection from tracker node (wxEventConnectionRef)
1400     if ( eventSink )
1401     {
1402         wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1403         if ( evtConnRef )
1404             evtConnRef->DecRef();
1405     }
1406 #endif // wxUSE_WEAKREF
1407
1408     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1409     while (node)
1410     {
1411         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1412
1413         if ((entry->m_id == id) &&
1414             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1415             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1416             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1417             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1418             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1419         {
1420             if (entry->m_callbackUserData)
1421                 delete entry->m_callbackUserData;
1422             m_dynamicEvents->Erase( node );
1423             delete entry;
1424             return true;
1425         }
1426         node = node->GetNext();
1427     }
1428     return false;
1429 }
1430
1431 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1432 {
1433     wxCHECK_MSG( m_dynamicEvents, false,
1434                  wxT("caller should check that we have dynamic events") );
1435
1436     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1437     while (node)
1438     {
1439         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1440
1441         // get next node before (maybe) calling the event handler as it could
1442         // call Disconnect() invalidating the current node
1443         node = node->GetNext();
1444
1445         if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1446         {
1447             wxEvtHandler *handler = entry->m_eventSink ? entry->m_eventSink
1448                                                        : this;
1449             if ( ProcessEventIfMatches(*entry, handler, event) )
1450                 return true;
1451         }
1452     }
1453
1454     return false;
1455 }
1456
1457 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1458 {
1459     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1460                   wxT("can't have both object and void client data") );
1461
1462     if ( m_clientObject )
1463         delete m_clientObject;
1464
1465     m_clientObject = data;
1466     m_clientDataType = wxClientData_Object;
1467 }
1468
1469 wxClientData *wxEvtHandler::DoGetClientObject() const
1470 {
1471     // it's not an error to call GetClientObject() on a window which doesn't
1472     // have client data at all - NULL will be returned
1473     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1474                   wxT("this window doesn't have object client data") );
1475
1476     return m_clientObject;
1477 }
1478
1479 void wxEvtHandler::DoSetClientData( void *data )
1480 {
1481     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1482                   wxT("can't have both object and void client data") );
1483
1484     m_clientData = data;
1485     m_clientDataType = wxClientData_Void;
1486 }
1487
1488 void *wxEvtHandler::DoGetClientData() const
1489 {
1490     // it's not an error to call GetClientData() on a window which doesn't have
1491     // client data at all - NULL will be returned
1492     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1493                   wxT("this window doesn't have void client data") );
1494
1495     return m_clientData;
1496 }
1497
1498 #if wxUSE_WEAKREF
1499 // A helper to find an wxEventConnectionRef object
1500 wxEventConnectionRef *
1501 wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1502 {
1503     for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1504     {
1505         // we only want wxEventConnectionRef nodes here
1506         wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1507         if ( evtConnRef && evtConnRef->m_src == this )
1508         {
1509             wxASSERT( evtConnRef->m_sink==eventSink );
1510             return evtConnRef;
1511         }
1512     }
1513
1514     return NULL;
1515 }
1516
1517 void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1518 {
1519     wxASSERT(m_dynamicEvents);
1520
1521     // remove all connections with this sink
1522     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1523     while (node)
1524     {
1525         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1526         node_nxt = node->GetNext();
1527
1528         if ( entry->m_eventSink==sink )
1529         {
1530             if (entry->m_callbackUserData)
1531                 delete entry->m_callbackUserData;
1532             m_dynamicEvents->Erase( node );
1533             delete entry;
1534         }
1535         node = node_nxt;
1536     }
1537 }
1538 #endif // wxUSE_WEAKREF
1539
1540 #endif // wxUSE_BASE
1541
1542 #if wxUSE_GUI
1543
1544 // Find a window with the focus, that is also a descendant of the given window.
1545 // This is used to determine the window to initially send commands to.
1546 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1547 {
1548     // Process events starting with the window with the focus, if any.
1549     wxWindow* focusWin = wxWindow::FindFocus();
1550     wxWindow* win = focusWin;
1551
1552     // Check if this is a descendant of this frame.
1553     // If not, win will be set to NULL.
1554     while (win)
1555     {
1556         if (win == ancestor)
1557             break;
1558         else
1559             win = win->GetParent();
1560     }
1561     if (win == (wxWindow*) NULL)
1562         focusWin = (wxWindow*) NULL;
1563
1564     return focusWin;
1565 }
1566
1567 // ----------------------------------------------------------------------------
1568 // wxEventBlocker
1569 // ----------------------------------------------------------------------------
1570
1571 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1572 {
1573     wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1574
1575     m_window = win;
1576
1577     Block(type);
1578     m_window->PushEventHandler(this);
1579 }
1580
1581 wxEventBlocker::~wxEventBlocker()
1582 {
1583     wxEvtHandler *popped = m_window->PopEventHandler(false);
1584     wxCHECK_RET(popped == this,
1585         wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1586 }
1587
1588 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1589 {
1590     // should this event be blocked?
1591     for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1592     {
1593         wxEventType t = (wxEventType)m_eventsToBlock[i];
1594         if ( t == wxEVT_ANY || t == event.GetEventType() )
1595             return true;   // yes, it should: mark this event as processed
1596     }
1597
1598     return false;
1599 }
1600
1601 #endif // wxUSE_GUI