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
  29 #ifndef WX_PRECOMP
  30     #include "wx/list.h"
  31     #include "wx/app.h"
  32     #include "wx/utils.h"
  33     #include "wx/stopwatch.h"
  34     #include "wx/module.h"
  35
  36     #if wxUSE_GUI
  37         #include "wx/window.h"
  38         #include "wx/control.h"
  39         #include "wx/dc.h"
  40         #include "wx/textctrl.h"
  41         #include "wx/validate.h"
  42     #endif // wxUSE_GUI
  43 #endif
  44
  45 // ----------------------------------------------------------------------------
  46 // wxWin macros
  47 // ----------------------------------------------------------------------------
  48
  49 #if wxUSE_BASE
  50     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  51     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  52     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  53 #endif // wxUSE_BASE
  54
  55 #if wxUSE_GUI
  56     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  57     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  58     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  59     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  60     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  61     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  62     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  63     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  64     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  65     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  66     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  67     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  68     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  69     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  70     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
  91     IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
  92 #endif // wxUSE_GUI
  93
  94 #if wxUSE_BASE
  95
  96 const wxEventTable *wxEvtHandler::GetEventTable() const
  97     { return &wxEvtHandler::sm_eventTable; }
  98
  99 const wxEventTable wxEvtHandler::sm_eventTable =
 100     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 101
 102 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 103     { return wxEvtHandler::sm_eventHashTable; }
 104
 105 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 106
 107 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 108     { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 109
 110
 111 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
 112 // leaked, so we need to manually clean up all event tables before checking for
 113 // the memory leaks when using it, however this breaks re-initializing the
 114 // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
 115 // event tables won't be rebuilt the next time, so disable this by default
 116 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 117
 118 class wxEventTableEntryModule: public wxModule
 119 {
 120 public:
 121     wxEventTableEntryModule() { }
 122     virtual bool OnInit() { return true; }
 123     virtual void OnExit() { wxEventHashTable::ClearAll(); }
 124
 125     DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 126 };
 127
 128 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 129
 130 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
 131
 132 // ----------------------------------------------------------------------------
 133 // global variables
 134 // ----------------------------------------------------------------------------
 135
 136 // To put pending event handlers
 137 wxList *wxPendingEvents = (wxList *)NULL;
 138
 139 #if wxUSE_THREADS
 140     // protects wxPendingEvents list
 141     wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
 142 #endif
 143
 144 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 145
 146 // common event types are defined here, other event types are defined by the
 147 // components which use them
 148
 149 const wxEventType wxEVT_FIRST = 10000;
 150 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 151
 152 DEFINE_EVENT_TYPE(wxEVT_NULL)
 153 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 154 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 155 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 156
 157 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 158
 159 #endif // wxUSE_BASE
 160
 161 #if wxUSE_GUI
 162
 163 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 164
 165 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 166 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 167 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 168 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 169 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 179 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 180 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 181 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
 182
 183 // Mouse event types
 184 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 185 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 186 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 187 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 188 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 189 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 190 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 191 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 192 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 193 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 194 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 195 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 196 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 197 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 198 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 199 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 200
 201 // Non-client mouse events
 202 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 203 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 204 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 205 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 206 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 207 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 208 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 209 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 210 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 211 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 212 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 213 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 214
 215 // Character input event type
 216 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 217 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 218 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 219 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 220 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 221 #if wxUSE_HOTKEY
 222 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 223 #endif
 224
 225 // Set cursor event
 226 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 227
 228 // wxScrollbar and wxSlider event identifiers
 229 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 230 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 231 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 232 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 233 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 234 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 235 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 236 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 237 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
 238
 239 // Scroll events from wxWindow
 240 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 243 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 244 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 245 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 246 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 247 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 248
 249 // System events
 250 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 251 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 252 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 253 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 254 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 255 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 256 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 257 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
 258 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 259 DEFINE_EVENT_TYPE(wxEVT_POWER)
 260 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 261 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 262 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 263 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 264 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 265 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 266 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 267 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
 268 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 269 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 270 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 271 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 272 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 273 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 274 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 275 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 276 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 277 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 278 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 279 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 280 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 281 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 282 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 283 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 284 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 285 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 286 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 287 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 288 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 289 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 290 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 291
 292 // Clipboard events
 293 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
 294 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
 295 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
 296
 297 // Generic command events
 298 // Note: a click is a higher-level event than button down/up
 299 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 300 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 301 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 302 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 303 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 304 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 305 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 306
 307 // Help events
 308 DEFINE_EVENT_TYPE(wxEVT_HELP)
 309 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 310
 311 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 312
 313 #endif // wxUSE_GUI
 314
 315 #if wxUSE_BASE
 316
 317 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 318
 319 // ============================================================================
 320 // implementation
 321 // ============================================================================
 322
 323 // ----------------------------------------------------------------------------
 324 // event initialization
 325 // ----------------------------------------------------------------------------
 326
 327 int wxNewEventType()
 328 {
 329     // MT-FIXME
 330     static int s_lastUsedEventType = wxEVT_FIRST;
 331
 332     return s_lastUsedEventType++;
 333 }
 334
 335 // ----------------------------------------------------------------------------
 336 // wxEvent
 337 // ----------------------------------------------------------------------------
 338
 339 /*
 340  * General wxWidgets events, covering
 341  * all interesting things that might happen (button clicking, resizing,
 342  * setting text in widgets, etc.).
 343  *
 344  * For each completely new event type, derive a new event class.
 345  *
 346  */
 347
 348 wxEvent::wxEvent(int theId, wxEventType commandType )
 349 {
 350     m_eventType = commandType;
 351     m_eventObject = (wxObject *) NULL;
 352     m_timeStamp = 0;
 353     m_id = theId;
 354     m_skipped = false;
 355     m_callbackUserData = (wxObject *) NULL;
 356     m_isCommandEvent = false;
 357     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 358 }
 359
 360 wxEvent::wxEvent(const wxEvent &src)
 361     : wxObject(src)
 362     , m_eventObject(src.m_eventObject)
 363     , m_eventType(src.m_eventType)
 364     , m_timeStamp(src.m_timeStamp)
 365     , m_id(src.m_id)
 366     , m_callbackUserData(src.m_callbackUserData)
 367     , m_propagationLevel(src.m_propagationLevel)
 368     , m_skipped(src.m_skipped)
 369     , m_isCommandEvent(src.m_isCommandEvent)
 370 {
 371 }
 372
 373 #endif // wxUSE_BASE
 374
 375 #if wxUSE_GUI
 376
 377 /*
 378  * Command events
 379  *
 380  */
 381
 382 #ifdef __VISUALC__
 383     // 'this' : used in base member initializer list (for m_commandString)
 384     #pragma warning(disable:4355)
 385 #endif
 386
 387 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 388               : wxEvent(theId, commandType)
 389 {
 390     m_clientData = (char *) NULL;
 391     m_clientObject = (wxClientData *) NULL;
 392     m_extraLong = 0;
 393     m_commandInt = 0;
 394     m_isCommandEvent = true;
 395
 396     // the command events are propagated upwards by default
 397     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 398 }
 399
 400 #ifdef __VISUALC__
 401     #pragma warning(default:4355)
 402 #endif
 403
 404 wxString wxCommandEvent::GetString() const
 405 {
 406     if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
 407         return m_cmdString;
 408     else
 409     {
 410 #if wxUSE_TEXTCTRL
 411         wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
 412         if(txt)
 413             return txt->GetValue();
 414         else
 415 #endif // wxUSE_TEXTCTRL
 416             return m_cmdString;
 417     }
 418 }
 419
 420 /*
 421  * UI update events
 422  */
 423
 424 #if wxUSE_LONGLONG
 425 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 426 #endif
 427
 428 long wxUpdateUIEvent::sm_updateInterval = 0;
 429
 430 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 431
 432 // Can we update?
 433 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
 434 {
 435     // Don't update if we've switched global updating off
 436     // and this window doesn't support updates.
 437     if (win &&
 438        (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 439        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 440         return false;
 441
 442     if (sm_updateInterval == -1)
 443         return false;
 444
 445     if (sm_updateInterval == 0)
 446         return true;
 447
 448 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 449     wxLongLong now = wxGetLocalTimeMillis();
 450     if (now > (sm_lastUpdate + sm_updateInterval))
 451     {
 452         return true;
 453     }
 454
 455     return false;
 456 #else
 457     // If we don't have wxStopWatch or wxLongLong, we
 458     // should err on the safe side and update now anyway.
 459     return true;
 460 #endif
 461 }
 462
 463 // Reset the update time to provide a delay until the next
 464 // time we should update
 465 void wxUpdateUIEvent::ResetUpdateTime()
 466 {
 467 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 468     if (sm_updateInterval > 0)
 469     {
 470         wxLongLong now = wxGetLocalTimeMillis();
 471         if (now > (sm_lastUpdate + sm_updateInterval))
 472         {
 473             sm_lastUpdate = now;
 474         }
 475     }
 476 #endif
 477 }
 478
 479 /*
 480  * Scroll events
 481  */
 482
 483 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 484                              int id,
 485                              int pos,
 486                              int orient)
 487     : wxCommandEvent(commandType, id)
 488 {
 489     m_extraLong = orient;
 490     m_commandInt = pos;
 491 }
 492
 493 /*
 494  * ScrollWin events
 495  */
 496
 497 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 498                                    int pos,
 499                                    int orient)
 500 {
 501     m_eventType = commandType;
 502     m_extraLong = orient;
 503     m_commandInt = pos;
 504 }
 505
 506 /*
 507  * Mouse events
 508  *
 509  */
 510
 511 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 512 {
 513     m_eventType = commandType;
 514     m_metaDown = false;
 515     m_altDown = false;
 516     m_controlDown = false;
 517     m_shiftDown = false;
 518     m_leftDown = false;
 519     m_rightDown = false;
 520     m_middleDown = false;
 521     m_x = 0;
 522     m_y = 0;
 523     m_wheelRotation = 0;
 524     m_wheelDelta = 0;
 525     m_linesPerAction = 0;
 526     m_wheelAxis = 0;
 527 }
 528
 529 void wxMouseEvent::Assign(const wxMouseEvent& event)
 530 {
 531     m_eventType = event.m_eventType;
 532
 533     m_x = event.m_x;
 534     m_y = event.m_y;
 535
 536     m_leftDown = event.m_leftDown;
 537     m_middleDown = event.m_middleDown;
 538     m_rightDown = event.m_rightDown;
 539
 540     m_controlDown = event.m_controlDown;
 541     m_shiftDown = event.m_shiftDown;
 542     m_altDown = event.m_altDown;
 543     m_metaDown = event.m_metaDown;
 544
 545     m_wheelRotation = event.m_wheelRotation;
 546     m_wheelDelta = event.m_wheelDelta;
 547     m_linesPerAction = event.m_linesPerAction;
 548     m_wheelAxis = event.m_wheelAxis;
 549 }
 550
 551 // return true if was a button dclick event
 552 bool wxMouseEvent::ButtonDClick(int but) const
 553 {
 554     switch (but)
 555     {
 556         default:
 557             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 558             // fall through
 559
 560         case wxMOUSE_BTN_ANY:
 561             return (LeftDClick() || MiddleDClick() || RightDClick());
 562
 563         case wxMOUSE_BTN_LEFT:
 564             return LeftDClick();
 565
 566         case wxMOUSE_BTN_MIDDLE:
 567             return MiddleDClick();
 568
 569         case wxMOUSE_BTN_RIGHT:
 570             return RightDClick();
 571     }
 572 }
 573
 574 // return true if was a button down event
 575 bool wxMouseEvent::ButtonDown(int but) const
 576 {
 577     switch (but)
 578     {
 579         default:
 580             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 581             // fall through
 582
 583         case wxMOUSE_BTN_ANY:
 584             return (LeftDown() || MiddleDown() || RightDown());
 585
 586         case wxMOUSE_BTN_LEFT:
 587             return LeftDown();
 588
 589         case wxMOUSE_BTN_MIDDLE:
 590             return MiddleDown();
 591
 592         case wxMOUSE_BTN_RIGHT:
 593             return RightDown();
 594     }
 595 }
 596
 597 // return true if was a button up event
 598 bool wxMouseEvent::ButtonUp(int but) const
 599 {
 600     switch (but)
 601     {
 602         default:
 603             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 604             // fall through
 605
 606         case wxMOUSE_BTN_ANY:
 607             return (LeftUp() || MiddleUp() || RightUp());
 608
 609         case wxMOUSE_BTN_LEFT:
 610             return LeftUp();
 611
 612         case wxMOUSE_BTN_MIDDLE:
 613             return MiddleUp();
 614
 615         case wxMOUSE_BTN_RIGHT:
 616             return RightUp();
 617     }
 618 }
 619
 620 // return true if the given button is currently changing state
 621 bool wxMouseEvent::Button(int but) const
 622 {
 623     switch (but)
 624     {
 625         default:
 626             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 627             // fall through
 628
 629         case wxMOUSE_BTN_ANY:
 630             return ButtonUp(wxMOUSE_BTN_ANY) ||
 631                     ButtonDown(wxMOUSE_BTN_ANY) ||
 632                         ButtonDClick(wxMOUSE_BTN_ANY);
 633
 634         case wxMOUSE_BTN_LEFT:
 635             return LeftDown() || LeftUp() || LeftDClick();
 636
 637         case wxMOUSE_BTN_MIDDLE:
 638             return MiddleDown() || MiddleUp() || MiddleDClick();
 639
 640         case wxMOUSE_BTN_RIGHT:
 641             return RightDown() || RightUp() || RightDClick();
 642     }
 643 }
 644
 645 bool wxMouseEvent::ButtonIsDown(int but) const
 646 {
 647     switch (but)
 648     {
 649         default:
 650             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 651             // fall through
 652
 653         case wxMOUSE_BTN_ANY:
 654             return LeftIsDown() || MiddleIsDown() || RightIsDown();
 655
 656         case wxMOUSE_BTN_LEFT:
 657             return LeftIsDown();
 658
 659         case wxMOUSE_BTN_MIDDLE:
 660             return MiddleIsDown();
 661
 662         case wxMOUSE_BTN_RIGHT:
 663             return RightIsDown();
 664     }
 665 }
 666
 667 int wxMouseEvent::GetButton() const
 668 {
 669     for ( int i = 1; i <= 3; i++ )
 670     {
 671         if ( Button(i) )
 672         {
 673             return i;
 674         }
 675     }
 676
 677     return wxMOUSE_BTN_NONE;
 678 }
 679
 680 // Find the logical position of the event given the DC
 681 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 682 {
 683     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 684     return pt;
 685 }
 686
 687
 688 /*
 689  * Keyboard event
 690  *
 691  */
 692
 693 wxKeyEvent::wxKeyEvent(wxEventType type)
 694 {
 695     m_eventType = type;
 696     m_shiftDown = false;
 697     m_controlDown = false;
 698     m_metaDown = false;
 699     m_altDown = false;
 700     m_keyCode = 0;
 701     m_scanCode = 0;
 702 #if wxUSE_UNICODE
 703     m_uniChar = 0;
 704 #endif
 705 }
 706
 707 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 708     : wxEvent(evt)
 709 {
 710     m_x = evt.m_x;
 711     m_y = evt.m_y;
 712
 713     m_keyCode = evt.m_keyCode;
 714
 715     m_controlDown = evt.m_controlDown;
 716     m_shiftDown = evt.m_shiftDown;
 717     m_altDown = evt.m_altDown;
 718     m_metaDown = evt.m_metaDown;
 719     m_scanCode = evt.m_scanCode;
 720     m_rawCode = evt.m_rawCode;
 721     m_rawFlags = evt.m_rawFlags;
 722
 723 #if wxUSE_UNICODE
 724     m_uniChar = evt.m_uniChar;
 725 #endif
 726 }
 727
 728 #if WXWIN_COMPATIBILITY_2_6
 729 long wxKeyEvent::KeyCode() const
 730 {
 731     return m_keyCode;
 732 }
 733 #endif // WXWIN_COMPATIBILITY_2_6
 734
 735 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 736 {
 737     SetEventType(wxEVT_CREATE);
 738     SetEventObject(win);
 739 }
 740
 741 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 742 {
 743     SetEventType(wxEVT_DESTROY);
 744     SetEventObject(win);
 745 }
 746
 747 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 748                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 749 {
 750     SetEventObject(win);
 751 }
 752
 753 // ----------------------------------------------------------------------------
 754 // wxHelpEvent
 755 // ----------------------------------------------------------------------------
 756
 757 /* static */
 758 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
 759 {
 760     if ( origin == Origin_Unknown )
 761     {
 762         // assume that the event comes from the help button if it's not from
 763         // keyboard and that pressing F1 always results in the help event
 764         origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
 765     }
 766
 767     return origin;
 768 }
 769
 770 #endif // wxUSE_GUI
 771
 772
 773 #if wxUSE_BASE
 774
 775 // ----------------------------------------------------------------------------
 776 // wxEventHashTable
 777 // ----------------------------------------------------------------------------
 778
 779 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 780
 781 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 782
 783 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 784                 : m_table(table),
 785                   m_rebuildHash(true)
 786 {
 787     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 788
 789     m_next = sm_first;
 790     if (m_next)
 791         m_next->m_previous = this;
 792     sm_first = this;
 793 }
 794
 795 wxEventHashTable::~wxEventHashTable()
 796 {
 797     if (m_next)
 798         m_next->m_previous = m_previous;
 799     if (m_previous)
 800         m_previous->m_next = m_next;
 801     if (sm_first == this)
 802         sm_first = m_next;
 803
 804     Clear();
 805 }
 806
 807 void wxEventHashTable::Clear()
 808 {
 809     for ( size_t i = 0; i < m_size; i++ )
 810     {
 811         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 812         delete eTTnode;
 813     }
 814
 815     delete[] m_eventTypeTable;
 816     m_eventTypeTable = NULL;
 817
 818     m_size = 0;
 819 }
 820
 821 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 822
 823 // Clear all tables
 824 void wxEventHashTable::ClearAll()
 825 {
 826     wxEventHashTable* table = sm_first;
 827     while (table)
 828     {
 829         table->Clear();
 830         table = table->m_next;
 831     }
 832 }
 833
 834 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
 835
 836 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 837 {
 838     if (m_rebuildHash)
 839     {
 840         InitHashTable();
 841         m_rebuildHash = false;
 842     }
 843
 844     if (!m_eventTypeTable)
 845         return false;
 846
 847     // Find all entries for the given event type.
 848     wxEventType eventType = event.GetEventType();
 849     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 850     if (eTTnode && eTTnode->eventType == eventType)
 851     {
 852         // Now start the search for an event handler
 853         // that can handle an event with the given ID.
 854         const wxEventTableEntryPointerArray&
 855             eventEntryTable = eTTnode->eventEntryTable;
 856
 857         const size_t count = eventEntryTable.GetCount();
 858         for (size_t n = 0; n < count; n++)
 859         {
 860             if ( wxEvtHandler::
 861                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 862             {
 863                 return true;
 864             }
 865         }
 866     }
 867
 868     return false;
 869 }
 870
 871 void wxEventHashTable::InitHashTable()
 872 {
 873     // Loop over the event tables and all its base tables.
 874     const wxEventTable *table = &m_table;
 875     while (table)
 876     {
 877         // Retrieve all valid event handler entries
 878         const wxEventTableEntry *entry = table->entries;
 879         while (entry->m_fn != 0)
 880         {
 881             // Add the event entry in the Hash.
 882             AddEntry(*entry);
 883
 884             entry++;
 885         }
 886
 887         table = table->baseTable;
 888     }
 889
 890     // Lets free some memory.
 891     size_t i;
 892     for(i = 0; i < m_size; i++)
 893     {
 894         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 895         if (eTTnode)
 896         {
 897             eTTnode->eventEntryTable.Shrink();
 898         }
 899     }
 900 }
 901
 902 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 903 {
 904     // This might happen 'accidentally' as the app is exiting
 905     if (!m_eventTypeTable)
 906         return;
 907
 908     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 909     EventTypeTablePointer  eTTnode = *peTTnode;
 910
 911     if (eTTnode)
 912     {
 913         if (eTTnode->eventType != entry.m_eventType)
 914         {
 915             // Resize the table!
 916             GrowEventTypeTable();
 917             // Try again to add it.
 918             AddEntry(entry);
 919             return;
 920         }
 921     }
 922     else
 923     {
 924         eTTnode = new EventTypeTable;
 925         eTTnode->eventType = entry.m_eventType;
 926         *peTTnode = eTTnode;
 927     }
 928
 929     // Fill all hash entries between entry.m_id and entry.m_lastId...
 930     eTTnode->eventEntryTable.Add(&entry);
 931 }
 932
 933 void wxEventHashTable::AllocEventTypeTable(size_t size)
 934 {
 935     m_eventTypeTable = new EventTypeTablePointer[size];
 936     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 937     m_size = size;
 938 }
 939
 940 void wxEventHashTable::GrowEventTypeTable()
 941 {
 942     size_t oldSize = m_size;
 943     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 944
 945     // TODO: Search the most optimal grow sequence
 946     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 947
 948     for ( size_t i = 0; i < oldSize; /* */ )
 949     {
 950         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
 951         if (eTToldNode)
 952         {
 953             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
 954             EventTypeTablePointer  eTTnode = *peTTnode;
 955
 956             // Check for collision, we don't want any.
 957             if (eTTnode)
 958             {
 959                 GrowEventTypeTable();
 960                 continue; // Don't increment the counter,
 961                           // as we still need to add this element.
 962             }
 963             else
 964             {
 965                 // Get the old value and put it in the new table.
 966                 *peTTnode = oldEventTypeTable[i];
 967             }
 968         }
 969
 970         i++;
 971     }
 972
 973     delete[] oldEventTypeTable;
 974 }
 975
 976
 977 // ----------------------------------------------------------------------------
 978 // wxEvtHandler
 979 // ----------------------------------------------------------------------------
 980
 981 /*
 982  * Event handler
 983  */
 984
 985 wxEvtHandler::wxEvtHandler()
 986 {
 987     m_nextHandler = (wxEvtHandler *) NULL;
 988     m_previousHandler = (wxEvtHandler *) NULL;
 989     m_enabled = true;
 990     m_dynamicEvents = (wxList *) NULL;
 991     m_pendingEvents = (wxList *) NULL;
 992 #if wxUSE_THREADS
 993 #  if !defined(__VISAGECPP__)
 994     m_eventsLocker = new wxCriticalSection;
 995 #  endif
 996 #endif
 997
 998     // no client data (yet)
 999     m_clientData = NULL;
1000     m_clientDataType = wxClientData_None;
1001 }
1002
1003 wxEvtHandler::~wxEvtHandler()
1004 {
1005     // Takes itself out of the list of handlers
1006     if (m_previousHandler)
1007         m_previousHandler->m_nextHandler = m_nextHandler;
1008
1009     if (m_nextHandler)
1010         m_nextHandler->m_previousHandler = m_previousHandler;
1011
1012     if (m_dynamicEvents)
1013     {
1014         for ( wxList::iterator it = m_dynamicEvents->begin(),
1015                                end = m_dynamicEvents->end();
1016               it != end;
1017               ++it )
1018         {
1019 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1020             wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1021 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1022             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1023 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1024
1025             if (entry->m_callbackUserData)
1026                 delete entry->m_callbackUserData;
1027             delete entry;
1028         }
1029         delete m_dynamicEvents;
1030     };
1031
1032     if (m_pendingEvents)
1033         m_pendingEvents->DeleteContents(true);
1034     delete m_pendingEvents;
1035
1036 #if wxUSE_THREADS
1037 #  if !defined(__VISAGECPP__)
1038     delete m_eventsLocker;
1039 #  endif
1040
1041     // Remove us from wxPendingEvents if necessary.
1042     if(wxPendingEventsLocker)
1043         wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1044     if ( wxPendingEvents )
1045     {
1046         // Delete all occurences of this from the list of pending events
1047         while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1048     }
1049     if(wxPendingEventsLocker)
1050         wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1051 #endif
1052
1053     // we only delete object data, not untyped
1054     if ( m_clientDataType == wxClientData_Object )
1055         delete m_clientObject;
1056 }
1057
1058 #if wxUSE_THREADS
1059
1060 bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1061 {
1062     // check that we are really in a child thread
1063     wxASSERT_MSG( !wxThread::IsMain(),
1064                   wxT("use ProcessEvent() in main thread") );
1065
1066     AddPendingEvent(event);
1067
1068     return true;
1069 }
1070
1071 void wxEvtHandler::ClearEventLocker()
1072 {
1073 #if !defined(__VISAGECPP__)
1074     delete m_eventsLocker;
1075     m_eventsLocker = NULL;
1076 #endif
1077 }
1078
1079 #endif // wxUSE_THREADS
1080
1081 void wxEvtHandler::AddPendingEvent(const wxEvent& event)
1082 {
1083     // 1) Add event to list of pending events of this event handler
1084
1085     wxEvent *eventCopy = event.Clone();
1086
1087     // we must be able to copy the events here so the event class must
1088     // implement Clone() properly instead of just providing a NULL stab for it
1089     wxCHECK_RET( eventCopy,
1090                  _T("events of this type aren't supposed to be posted") );
1091
1092     wxENTER_CRIT_SECT( Lock() );
1093
1094     if ( !m_pendingEvents )
1095       m_pendingEvents = new wxList;
1096
1097     m_pendingEvents->Append(eventCopy);
1098
1099     wxLEAVE_CRIT_SECT( Lock() );
1100
1101     // 2) Add this event handler to list of event handlers that
1102     //    have pending events.
1103
1104     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1105
1106     if ( !wxPendingEvents )
1107         wxPendingEvents = new wxList;
1108     wxPendingEvents->Append(this);
1109
1110     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1111
1112     // 3) Inform the system that new pending events are somewhere,
1113     //    and that these should be processed in idle time.
1114     wxWakeUpIdle();
1115 }
1116
1117 void wxEvtHandler::ProcessPendingEvents()
1118 {
1119     // this method is only called by wxApp if this handler does have
1120     // pending events
1121     wxCHECK_RET( m_pendingEvents,
1122                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
1123
1124     wxENTER_CRIT_SECT( Lock() );
1125
1126     // we leave the loop once we have processed all events that were present at
1127     // the start of ProcessPendingEvents because otherwise we could get into
1128     // infinite loop if the pending event handler execution resulted in another
1129     // event being posted
1130     size_t n = m_pendingEvents->size();
1131     for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1132           node;
1133           node = m_pendingEvents->GetFirst() )
1134     {
1135         wxEvent *event = (wxEvent *)node->GetData();
1136
1137         // It's importan we remove event from list before processing it.
1138         // Else a nested event loop, for example from a modal dialog, might
1139         // process the same event again.
1140
1141         m_pendingEvents->Erase(node);
1142
1143         wxLEAVE_CRIT_SECT( Lock() );
1144
1145         ProcessEvent(*event);
1146
1147         delete event;
1148
1149         wxENTER_CRIT_SECT( Lock() );
1150
1151         if ( --n == 0 )
1152             break;
1153     }
1154
1155     wxLEAVE_CRIT_SECT( Lock() );
1156 }
1157
1158 /*
1159  * Event table stuff
1160  */
1161 /* static */ bool
1162 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1163                                     wxEvtHandler *handler,
1164                                     wxEvent& event)
1165 {
1166     int tableId1 = entry.m_id,
1167         tableId2 = entry.m_lastId;
1168
1169     // match only if the event type is the same and the id is either -1 in
1170     // the event table (meaning "any") or the event id matches the id
1171     // specified in the event table either exactly or by falling into
1172     // range between first and last
1173     if ((tableId1 == wxID_ANY) ||
1174         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1175         (tableId2 != wxID_ANY &&
1176          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1177     {
1178         event.Skip(false);
1179         event.m_callbackUserData = entry.m_callbackUserData;
1180
1181 #if wxUSE_EXCEPTIONS
1182         if ( wxTheApp )
1183         {
1184             // call the handler via wxApp method which allows the user to catch
1185             // any exceptions which may be thrown by any handler in the program
1186             // in one place
1187             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1188         }
1189         else
1190 #endif // wxUSE_EXCEPTIONS
1191         {
1192             // no need for an extra virtual function call
1193             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1194         }
1195
1196         if (!event.GetSkipped())
1197             return true;
1198     }
1199
1200     return false;
1201 }
1202
1203 bool wxEvtHandler::TryParent(wxEvent& event)
1204 {
1205     if ( wxTheApp && (this != wxTheApp) )
1206     {
1207         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1208         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1209         // processed appropriately via SearchEventTable.
1210         if ( event.GetEventType() != wxEVT_IDLE )
1211         {
1212             if ( wxTheApp->ProcessEvent(event) )
1213                 return true;
1214         }
1215     }
1216
1217     return false;
1218 }
1219
1220 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1221 {
1222     // allow the application to hook into event processing
1223     if ( wxTheApp )
1224     {
1225         int rc = wxTheApp->FilterEvent(event);
1226         if ( rc != -1 )
1227         {
1228             wxASSERT_MSG( rc == 1 || rc == 0,
1229                           _T("unexpected wxApp::FilterEvent return value") );
1230
1231             return rc != 0;
1232         }
1233         //else: proceed normally
1234     }
1235
1236     // An event handler can be enabled or disabled
1237     if ( GetEvtHandlerEnabled() )
1238     {
1239         // if we have a validator, it has higher priority than our own event
1240         // table
1241         if ( TryValidator(event) )
1242             return true;
1243
1244         // Handle per-instance dynamic event tables first
1245         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1246             return true;
1247
1248         // Then static per-class event tables
1249         if ( GetEventHashTable().HandleEvent(event, this) )
1250             return true;
1251     }
1252
1253     // Try going down the event handler chain
1254     if ( GetNextHandler() )
1255     {
1256         // notice that we shouldn't let the parent have the event even if the
1257         // next handler does not process it because it will have already passed
1258         // it to the parent in this case
1259         return GetNextHandler()->ProcessEvent(event);
1260     }
1261
1262     // Finally propagate the event upwards the window chain and/or to the
1263     // application object as necessary
1264     return TryParent(event);
1265 }
1266
1267
1268 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1269 {
1270     const wxEventType eventType = event.GetEventType();
1271     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1272     {
1273         const wxEventTableEntry& entry = table.entries[i];
1274         if ( eventType == entry.m_eventType )
1275         {
1276             if ( ProcessEventIfMatches(entry, this, event) )
1277                 return true;
1278         }
1279     }
1280
1281     return false;
1282 }
1283
1284 void wxEvtHandler::Connect( int id, int lastId,
1285                             int eventType,
1286                             wxObjectEventFunction func,
1287                             wxObject *userData,
1288                             wxEvtHandler* eventSink )
1289 {
1290 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1291     wxEventTableEntry *entry = new wxEventTableEntry;
1292     entry->m_eventType = eventType;
1293     entry->m_id = id;
1294     entry->m_lastId = lastId;
1295     entry->m_fn = func;
1296     entry->m_callbackUserData = userData;
1297 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1298     wxDynamicEventTableEntry *entry =
1299         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1300 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1301
1302     if (!m_dynamicEvents)
1303         m_dynamicEvents = new wxList;
1304
1305     // Insert at the front of the list so most recent additions are found first
1306     m_dynamicEvents->Insert( (wxObject*) entry );
1307 }
1308
1309 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1310                   wxObjectEventFunction func,
1311                   wxObject *userData,
1312                   wxEvtHandler* eventSink )
1313 {
1314     if (!m_dynamicEvents)
1315         return false;
1316
1317     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1318     while (node)
1319     {
1320 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1321             wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1322 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1323             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1324 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1325
1326         if ((entry->m_id == id) &&
1327             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1328             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1329             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1330             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1331             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1332         {
1333             if (entry->m_callbackUserData)
1334                 delete entry->m_callbackUserData;
1335             m_dynamicEvents->Erase( node );
1336             delete entry;
1337             return true;
1338         }
1339         node = node->GetNext();
1340     }
1341     return false;
1342 }
1343
1344 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1345 {
1346     wxCHECK_MSG( m_dynamicEvents, false,
1347                  wxT("caller should check that we have dynamic events") );
1348
1349     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1350     while (node)
1351     {
1352 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1353         wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1354 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1355         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1356 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1357
1358         // get next node before (maybe) calling the event handler as it could
1359         // call Disconnect() invalidating the current node
1360         node = node->GetNext();
1361
1362         if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1363         {
1364             wxEvtHandler *handler =
1365 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1366                                     entry->m_eventSink ? entry->m_eventSink
1367                                                        :
1368 #endif
1369                                                          this;
1370
1371             if ( ProcessEventIfMatches(*entry, handler, event) )
1372             {
1373                 return true;
1374             }
1375         }
1376     }
1377
1378     return false;
1379 }
1380
1381 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1382 {
1383     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1384                   wxT("can't have both object and void client data") );
1385
1386     if ( m_clientObject )
1387         delete m_clientObject;
1388
1389     m_clientObject = data;
1390     m_clientDataType = wxClientData_Object;
1391 }
1392
1393 wxClientData *wxEvtHandler::DoGetClientObject() const
1394 {
1395     // it's not an error to call GetClientObject() on a window which doesn't
1396     // have client data at all - NULL will be returned
1397     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1398                   wxT("this window doesn't have object client data") );
1399
1400     return m_clientObject;
1401 }
1402
1403 void wxEvtHandler::DoSetClientData( void *data )
1404 {
1405     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1406                   wxT("can't have both object and void client data") );
1407
1408     m_clientData = data;
1409     m_clientDataType = wxClientData_Void;
1410 }
1411
1412 void *wxEvtHandler::DoGetClientData() const
1413 {
1414     // it's not an error to call GetClientData() on a window which doesn't have
1415     // client data at all - NULL will be returned
1416     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1417                   wxT("this window doesn't have void client data") );
1418
1419     return m_clientData;
1420 }
1421
1422 #endif // wxUSE_BASE
1423
1424 #if wxUSE_GUI
1425
1426 // Find a window with the focus, that is also a descendant of the given window.
1427 // This is used to determine the window to initially send commands to.
1428 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1429 {
1430     // Process events starting with the window with the focus, if any.
1431     wxWindow* focusWin = wxWindow::FindFocus();
1432     wxWindow* win = focusWin;
1433
1434     // Check if this is a descendant of this frame.
1435     // If not, win will be set to NULL.
1436     while (win)
1437     {
1438         if (win == ancestor)
1439             break;
1440         else
1441             win = win->GetParent();
1442     }
1443     if (win == (wxWindow*) NULL)
1444         focusWin = (wxWindow*) NULL;
1445
1446     return focusWin;
1447 }
1448
1449 // ----------------------------------------------------------------------------
1450 // wxEventBlocker
1451 // ----------------------------------------------------------------------------
1452
1453 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1454 {
1455     wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1456
1457     m_window = win;
1458
1459     Block(type);
1460     m_window->PushEventHandler(this);
1461 }
1462
1463 wxEventBlocker::~wxEventBlocker()
1464 {
1465     wxEvtHandler *popped = m_window->PopEventHandler(false);
1466     wxCHECK_RET(popped == this,
1467         wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1468 }
1469
1470 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1471 {
1472     // should this event be blocked?
1473     for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1474     {
1475         wxEventType t = (wxEventType)m_eventsToBlock[i];
1476         if ( t == wxEVT_ANY || t == event.GetEventType() )
1477             return true;   // yes, it should: mark this event as processed
1478     }
1479
1480     return false;
1481 }
1482
1483 #endif // wxUSE_GUI