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/control.h"
  38         #include "wx/dc.h"
  39         #include "wx/textctrl.h"
  40         #include "wx/validate.h"
  41     #endif // wxUSE_GUI
  42 #endif
  43
  44 // ----------------------------------------------------------------------------
  45 // wxWin macros
  46 // ----------------------------------------------------------------------------
  47
  48 #if wxUSE_BASE
  49     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  50     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  51 #endif // wxUSE_BASE
  52
  53 #if wxUSE_GUI
  54     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  55     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  56     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  57     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  58     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  59     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  60     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  61     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  62     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  63     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  64     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  65     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  66     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  67     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  68     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  69     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  70     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
  91 #endif // wxUSE_GUI
  92
  93 #if wxUSE_BASE
  94
  95 const wxEventTable *wxEvtHandler::GetEventTable() const
  96     { return &wxEvtHandler::sm_eventTable; }
  97
  98 const wxEventTable wxEvtHandler::sm_eventTable =
  99     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 100
 101 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 102     { return wxEvtHandler::sm_eventHashTable; }
 103
 104 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 105
 106 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 107     { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 108
 109
 110 #ifdef __WXDEBUG__
 111 // Clear up event hash table contents or we can get problems
 112 // when C++ is cleaning up the static object
 113 class wxEventTableEntryModule: public wxModule
 114 {
 115 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 116 public:
 117     wxEventTableEntryModule() {}
 118     bool OnInit() { return true; }
 119     void OnExit()
 120     {
 121         wxEventHashTable::ClearAll();
 122     }
 123 };
 124 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 125 #endif
 126
 127 // ----------------------------------------------------------------------------
 128 // global variables
 129 // ----------------------------------------------------------------------------
 130
 131 // To put pending event handlers
 132 wxList *wxPendingEvents = (wxList *)NULL;
 133
 134 #if wxUSE_THREADS
 135     // protects wxPendingEvents list
 136     wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
 137 #endif
 138
 139 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 140
 141 // common event types are defined here, other event types are defined by the
 142 // components which use them
 143
 144 const wxEventType wxEVT_FIRST = 10000;
 145 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 146
 147 DEFINE_EVENT_TYPE(wxEVT_NULL)
 148 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 149 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 150 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 151
 152 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 153
 154 #endif // wxUSE_BASE
 155
 156 #if wxUSE_GUI
 157
 158 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 159
 160 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 161 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 162 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 163 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 164 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 165 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 166 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 167 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 168 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 169 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
 177
 178 // Mouse event types
 179 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 180 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 181 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 182 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 183 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 184 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 185 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 186 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 187 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 188 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 189 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 190 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 191 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 192 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 193 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 194 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 195
 196 // Non-client mouse events
 197 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 198 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 199 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 200 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 201 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 202 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 203 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 204 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 205 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 206 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 207 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 208 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 209
 210 // Character input event type
 211 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 212 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 213 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 214 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 215 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 216 #if wxUSE_HOTKEY
 217 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 218 #endif
 219
 220 // Set cursor event
 221 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 222
 223 // wxScrollbar and wxSlider event identifiers
 224 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 225 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 226 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 227 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 228 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 229 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 230 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 231 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 232 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
 233
 234 // Scroll events from wxWindow
 235 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 236 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 237 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 238 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 239 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 240 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 243
 244 // System events
 245 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 246 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 247 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 248 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 249 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 250 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 251 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 252 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
 253 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 254 DEFINE_EVENT_TYPE(wxEVT_POWER)
 255 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 256 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 257 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 258 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 259 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 260 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 261 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 262 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
 263 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 264 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 265 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 266 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 267 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 268 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 269 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 270 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 271 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 272 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 273 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 274 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 275 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 276 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 277 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 278 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 279 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 280 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 281 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 282 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 283 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 284 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 285 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 286
 287 // Clipboard events
 288 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
 289 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
 290 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
 291
 292 // Generic command events
 293 // Note: a click is a higher-level event than button down/up
 294 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 295 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 296 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 297 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 298 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 299 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 300 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 301
 302 // Help events
 303 DEFINE_EVENT_TYPE(wxEVT_HELP)
 304 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 305
 306 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 307
 308 #endif // wxUSE_GUI
 309
 310 #if wxUSE_BASE
 311
 312 // ============================================================================
 313 // implementation
 314 // ============================================================================
 315
 316 // ----------------------------------------------------------------------------
 317 // event initialization
 318 // ----------------------------------------------------------------------------
 319
 320 int wxNewEventType()
 321 {
 322     // MT-FIXME
 323     static int s_lastUsedEventType = wxEVT_FIRST;
 324
 325     return s_lastUsedEventType++;
 326 }
 327
 328 // ----------------------------------------------------------------------------
 329 // wxEvent
 330 // ----------------------------------------------------------------------------
 331
 332 /*
 333  * General wxWidgets events, covering
 334  * all interesting things that might happen (button clicking, resizing,
 335  * setting text in widgets, etc.).
 336  *
 337  * For each completely new event type, derive a new event class.
 338  *
 339  */
 340
 341 wxEvent::wxEvent(int theId, wxEventType commandType )
 342 {
 343     m_eventType = commandType;
 344     m_eventObject = (wxObject *) NULL;
 345     m_timeStamp = 0;
 346     m_id = theId;
 347     m_skipped = false;
 348     m_callbackUserData = (wxObject *) NULL;
 349     m_isCommandEvent = false;
 350     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 351 }
 352
 353 wxEvent::wxEvent(const wxEvent &src)
 354     : wxObject(src)
 355     , m_eventObject(src.m_eventObject)
 356     , m_eventType(src.m_eventType)
 357     , m_timeStamp(src.m_timeStamp)
 358     , m_id(src.m_id)
 359     , m_callbackUserData(src.m_callbackUserData)
 360     , m_propagationLevel(src.m_propagationLevel)
 361     , m_skipped(src.m_skipped)
 362     , m_isCommandEvent(src.m_isCommandEvent)
 363 {
 364 }
 365
 366 #endif // wxUSE_BASE
 367
 368 #if wxUSE_GUI
 369
 370 /*
 371  * Command events
 372  *
 373  */
 374
 375 #ifdef __VISUALC__
 376     // 'this' : used in base member initializer list (for m_commandString)
 377     #pragma warning(disable:4355)
 378 #endif
 379
 380 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 381               : wxEvent(theId, commandType)
 382 {
 383     m_clientData = (char *) NULL;
 384     m_clientObject = (wxClientData *) NULL;
 385     m_extraLong = 0;
 386     m_commandInt = 0;
 387     m_isCommandEvent = true;
 388
 389     // the command events are propagated upwards by default
 390     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 391 }
 392
 393 #ifdef __VISUALC__
 394     #pragma warning(default:4355)
 395 #endif
 396
 397 wxString wxCommandEvent::GetString() const
 398 {
 399     if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
 400         return m_cmdString;
 401     else
 402     {
 403 #if wxUSE_TEXTCTRL
 404         wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
 405         if(txt)
 406             return txt->GetValue();
 407         else
 408 #endif // wxUSE_TEXTCTRL
 409             return m_cmdString;
 410     }
 411 }
 412
 413 /*
 414  * UI update events
 415  */
 416
 417 #if wxUSE_LONGLONG
 418 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 419 #endif
 420
 421 long wxUpdateUIEvent::sm_updateInterval = 0;
 422
 423 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 424
 425 // Can we update?
 426 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
 427 {
 428     // Don't update if we've switched global updating off
 429     // and this window doesn't support updates.
 430     if (win &&
 431        (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 432        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 433         return false;
 434
 435     if (sm_updateInterval == -1)
 436         return false;
 437
 438     if (sm_updateInterval == 0)
 439         return true;
 440
 441 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 442     wxLongLong now = wxGetLocalTimeMillis();
 443     if (now > (sm_lastUpdate + sm_updateInterval))
 444     {
 445         return true;
 446     }
 447
 448     return false;
 449 #else
 450     // If we don't have wxStopWatch or wxLongLong, we
 451     // should err on the safe side and update now anyway.
 452     return true;
 453 #endif
 454 }
 455
 456 // Reset the update time to provide a delay until the next
 457 // time we should update
 458 void wxUpdateUIEvent::ResetUpdateTime()
 459 {
 460 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 461     if (sm_updateInterval > 0)
 462     {
 463         wxLongLong now = wxGetLocalTimeMillis();
 464         if (now > (sm_lastUpdate + sm_updateInterval))
 465         {
 466             sm_lastUpdate = now;
 467         }
 468     }
 469 #endif
 470 }
 471
 472 /*
 473  * Idle events
 474  */
 475
 476 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 477
 478 // Can we send an idle event?
 479 bool wxIdleEvent::CanSend(wxWindow* win)
 480 {
 481     // Don't update if we've switched global updating off
 482     // and this window doesn't support updates.
 483     if (win &&
 484        (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
 485        ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
 486         return false;
 487
 488     return true;
 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     m_metaDown = false;
 527     m_altDown = false;
 528     m_controlDown = false;
 529     m_shiftDown = false;
 530     m_leftDown = false;
 531     m_rightDown = false;
 532     m_middleDown = false;
 533     m_x = 0;
 534     m_y = 0;
 535     m_wheelRotation = 0;
 536     m_wheelDelta = 0;
 537     m_linesPerAction = 0;
 538     m_wheelAxis = 0;
 539 }
 540
 541 void wxMouseEvent::Assign(const wxMouseEvent& event)
 542 {
 543     m_eventType = event.m_eventType;
 544
 545     m_x = event.m_x;
 546     m_y = event.m_y;
 547
 548     m_leftDown = event.m_leftDown;
 549     m_middleDown = event.m_middleDown;
 550     m_rightDown = event.m_rightDown;
 551
 552     m_controlDown = event.m_controlDown;
 553     m_shiftDown = event.m_shiftDown;
 554     m_altDown = event.m_altDown;
 555     m_metaDown = event.m_metaDown;
 556
 557     m_wheelRotation = event.m_wheelRotation;
 558     m_wheelDelta = event.m_wheelDelta;
 559     m_linesPerAction = event.m_linesPerAction;
 560     m_wheelAxis = event.m_wheelAxis;
 561 }
 562
 563 // return true if was a button dclick event
 564 bool wxMouseEvent::ButtonDClick(int but) const
 565 {
 566     switch (but)
 567     {
 568         default:
 569             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 570             // fall through
 571
 572         case wxMOUSE_BTN_ANY:
 573             return (LeftDClick() || MiddleDClick() || RightDClick());
 574
 575         case wxMOUSE_BTN_LEFT:
 576             return LeftDClick();
 577
 578         case wxMOUSE_BTN_MIDDLE:
 579             return MiddleDClick();
 580
 581         case wxMOUSE_BTN_RIGHT:
 582             return RightDClick();
 583     }
 584 }
 585
 586 // return true if was a button down event
 587 bool wxMouseEvent::ButtonDown(int but) const
 588 {
 589     switch (but)
 590     {
 591         default:
 592             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 593             // fall through
 594
 595         case wxMOUSE_BTN_ANY:
 596             return (LeftDown() || MiddleDown() || RightDown());
 597
 598         case wxMOUSE_BTN_LEFT:
 599             return LeftDown();
 600
 601         case wxMOUSE_BTN_MIDDLE:
 602             return MiddleDown();
 603
 604         case wxMOUSE_BTN_RIGHT:
 605             return RightDown();
 606     }
 607 }
 608
 609 // return true if was a button up event
 610 bool wxMouseEvent::ButtonUp(int but) const
 611 {
 612     switch (but)
 613     {
 614         default:
 615             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 616             // fall through
 617
 618         case wxMOUSE_BTN_ANY:
 619             return (LeftUp() || MiddleUp() || RightUp());
 620
 621         case wxMOUSE_BTN_LEFT:
 622             return LeftUp();
 623
 624         case wxMOUSE_BTN_MIDDLE:
 625             return MiddleUp();
 626
 627         case wxMOUSE_BTN_RIGHT:
 628             return RightUp();
 629     }
 630 }
 631
 632 // return true if the given button is currently changing state
 633 bool wxMouseEvent::Button(int but) const
 634 {
 635     switch (but)
 636     {
 637         default:
 638             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 639             // fall through
 640
 641         case wxMOUSE_BTN_ANY:
 642             return ButtonUp(wxMOUSE_BTN_ANY) ||
 643                     ButtonDown(wxMOUSE_BTN_ANY) ||
 644                         ButtonDClick(wxMOUSE_BTN_ANY);
 645
 646         case wxMOUSE_BTN_LEFT:
 647             return LeftDown() || LeftUp() || LeftDClick();
 648
 649         case wxMOUSE_BTN_MIDDLE:
 650             return MiddleDown() || MiddleUp() || MiddleDClick();
 651
 652         case wxMOUSE_BTN_RIGHT:
 653             return RightDown() || RightUp() || RightDClick();
 654     }
 655 }
 656
 657 bool wxMouseEvent::ButtonIsDown(int but) const
 658 {
 659     switch (but)
 660     {
 661         default:
 662             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 663             // fall through
 664
 665         case wxMOUSE_BTN_ANY:
 666             return LeftIsDown() || MiddleIsDown() || RightIsDown();
 667
 668         case wxMOUSE_BTN_LEFT:
 669             return LeftIsDown();
 670
 671         case wxMOUSE_BTN_MIDDLE:
 672             return MiddleIsDown();
 673
 674         case wxMOUSE_BTN_RIGHT:
 675             return RightIsDown();
 676     }
 677 }
 678
 679 int wxMouseEvent::GetButton() const
 680 {
 681     for ( int i = 1; i <= 3; i++ )
 682     {
 683         if ( Button(i) )
 684         {
 685             return i;
 686         }
 687     }
 688
 689     return wxMOUSE_BTN_NONE;
 690 }
 691
 692 // Find the logical position of the event given the DC
 693 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 694 {
 695     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 696     return pt;
 697 }
 698
 699
 700 /*
 701  * Keyboard event
 702  *
 703  */
 704
 705 wxKeyEvent::wxKeyEvent(wxEventType type)
 706 {
 707     m_eventType = type;
 708     m_shiftDown = false;
 709     m_controlDown = false;
 710     m_metaDown = false;
 711     m_altDown = false;
 712     m_keyCode = 0;
 713     m_scanCode = 0;
 714 #if wxUSE_UNICODE
 715     m_uniChar = 0;
 716 #endif
 717 }
 718
 719 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 720     : wxEvent(evt)
 721 {
 722     m_x = evt.m_x;
 723     m_y = evt.m_y;
 724
 725     m_keyCode = evt.m_keyCode;
 726
 727     m_controlDown = evt.m_controlDown;
 728     m_shiftDown = evt.m_shiftDown;
 729     m_altDown = evt.m_altDown;
 730     m_metaDown = evt.m_metaDown;
 731     m_scanCode = evt.m_scanCode;
 732     m_rawCode = evt.m_rawCode;
 733     m_rawFlags = evt.m_rawFlags;
 734
 735 #if wxUSE_UNICODE
 736     m_uniChar = evt.m_uniChar;
 737 #endif
 738 }
 739
 740 #if WXWIN_COMPATIBILITY_2_6
 741 long wxKeyEvent::KeyCode() const
 742 {
 743     return m_keyCode;
 744 }
 745 #endif // WXWIN_COMPATIBILITY_2_6
 746
 747 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 748 {
 749     SetEventType(wxEVT_CREATE);
 750     SetEventObject(win);
 751 }
 752
 753 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 754 {
 755     SetEventType(wxEVT_DESTROY);
 756     SetEventObject(win);
 757 }
 758
 759 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 760                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 761 {
 762     SetEventObject(win);
 763 }
 764
 765 // ----------------------------------------------------------------------------
 766 // wxHelpEvent
 767 // ----------------------------------------------------------------------------
 768
 769 /* static */
 770 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
 771 {
 772     if ( origin == Origin_Unknown )
 773     {
 774         // assume that the event comes from the help button if it's not from
 775         // keyboard and that pressing F1 always results in the help event
 776         origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
 777     }
 778
 779     return origin;
 780 }
 781
 782 #endif // wxUSE_GUI
 783
 784
 785 #if wxUSE_BASE
 786
 787 // ----------------------------------------------------------------------------
 788 // wxEventHashTable
 789 // ----------------------------------------------------------------------------
 790
 791 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 792
 793 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 794
 795 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 796                 : m_table(table),
 797                   m_rebuildHash(true)
 798 {
 799     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 800
 801     m_next = sm_first;
 802     if (m_next)
 803         m_next->m_previous = this;
 804     sm_first = this;
 805 }
 806
 807 wxEventHashTable::~wxEventHashTable()
 808 {
 809     if (m_next)
 810         m_next->m_previous = m_previous;
 811     if (m_previous)
 812         m_previous->m_next = m_next;
 813     if (sm_first == this)
 814         sm_first = m_next;
 815
 816     Clear();
 817 }
 818
 819 void wxEventHashTable::Clear()
 820 {
 821     size_t i;
 822     for(i = 0; i < m_size; i++)
 823     {
 824         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 825         if (eTTnode)
 826         {
 827             delete eTTnode;
 828         }
 829     }
 830
 831     // Necessary in order to not invoke the
 832     // overloaded delete operator when statics are cleaned up
 833     if (m_eventTypeTable)
 834         delete[] m_eventTypeTable;
 835
 836     m_eventTypeTable = NULL;
 837     m_size = 0;
 838 }
 839
 840 // Clear all tables
 841 void wxEventHashTable::ClearAll()
 842 {
 843     wxEventHashTable* table = sm_first;
 844     while (table)
 845     {
 846         table->Clear();
 847         table = table->m_next;
 848     }
 849 }
 850
 851 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 852 {
 853     if (m_rebuildHash)
 854     {
 855         InitHashTable();
 856         m_rebuildHash = false;
 857     }
 858
 859     if (!m_eventTypeTable)
 860         return false;
 861
 862     // Find all entries for the given event type.
 863     wxEventType eventType = event.GetEventType();
 864     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 865     if (eTTnode && eTTnode->eventType == eventType)
 866     {
 867         // Now start the search for an event handler
 868         // that can handle an event with the given ID.
 869         const wxEventTableEntryPointerArray&
 870             eventEntryTable = eTTnode->eventEntryTable;
 871
 872         const size_t count = eventEntryTable.GetCount();
 873         for (size_t n = 0; n < count; n++)
 874         {
 875             if ( wxEvtHandler::
 876                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 877             {
 878                 return true;
 879             }
 880         }
 881     }
 882
 883     return false;
 884 }
 885
 886 void wxEventHashTable::InitHashTable()
 887 {
 888     // Loop over the event tables and all its base tables.
 889     const wxEventTable *table = &m_table;
 890     while (table)
 891     {
 892         // Retrieve all valid event handler entries
 893         const wxEventTableEntry *entry = table->entries;
 894         while (entry->m_fn != 0)
 895         {
 896             // Add the event entry in the Hash.
 897             AddEntry(*entry);
 898
 899             entry++;
 900         }
 901
 902         table = table->baseTable;
 903     }
 904
 905     // Lets free some memory.
 906     size_t i;
 907     for(i = 0; i < m_size; i++)
 908     {
 909         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 910         if (eTTnode)
 911         {
 912             eTTnode->eventEntryTable.Shrink();
 913         }
 914     }
 915 }
 916
 917 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 918 {
 919     // This might happen 'accidentally' as the app is exiting
 920     if (!m_eventTypeTable)
 921         return;
 922
 923     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 924     EventTypeTablePointer  eTTnode = *peTTnode;
 925
 926     if (eTTnode)
 927     {
 928         if (eTTnode->eventType != entry.m_eventType)
 929         {
 930             // Resize the table!
 931             GrowEventTypeTable();
 932             // Try again to add it.
 933             AddEntry(entry);
 934             return;
 935         }
 936     }
 937     else
 938     {
 939         eTTnode = new EventTypeTable;
 940         eTTnode->eventType = entry.m_eventType;
 941         *peTTnode = eTTnode;
 942     }
 943
 944     // Fill all hash entries between entry.m_id and entry.m_lastId...
 945     eTTnode->eventEntryTable.Add(&entry);
 946 }
 947
 948 void wxEventHashTable::AllocEventTypeTable(size_t size)
 949 {
 950     m_eventTypeTable = new EventTypeTablePointer[size];
 951     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 952     m_size = size;
 953 }
 954
 955 void wxEventHashTable::GrowEventTypeTable()
 956 {
 957     size_t oldSize = m_size;
 958     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 959
 960     // TODO: Search the most optimal grow sequence
 961     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 962
 963     for ( size_t i = 0; i < oldSize; /* */ )
 964     {
 965         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
 966         if (eTToldNode)
 967         {
 968             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
 969             EventTypeTablePointer  eTTnode = *peTTnode;
 970
 971             // Check for collision, we don't want any.
 972             if (eTTnode)
 973             {
 974                 GrowEventTypeTable();
 975                 continue; // Don't increment the counter,
 976                           // as we still need to add this element.
 977             }
 978             else
 979             {
 980                 // Get the old value and put it in the new table.
 981                 *peTTnode = oldEventTypeTable[i];
 982             }
 983         }
 984
 985         i++;
 986     }
 987
 988     delete[] oldEventTypeTable;
 989 }
 990
 991
 992 // ----------------------------------------------------------------------------
 993 // wxEvtHandler
 994 // ----------------------------------------------------------------------------
 995
 996 /*
 997  * Event handler
 998  */
 999
1000 wxEvtHandler::wxEvtHandler()
1001 {
1002     m_nextHandler = (wxEvtHandler *) NULL;
1003     m_previousHandler = (wxEvtHandler *) NULL;
1004     m_enabled = true;
1005     m_dynamicEvents = (wxList *) NULL;
1006     m_pendingEvents = (wxList *) NULL;
1007 #if wxUSE_THREADS
1008 #  if !defined(__VISAGECPP__)
1009     m_eventsLocker = new wxCriticalSection;
1010 #  endif
1011 #endif
1012
1013     // no client data (yet)
1014     m_clientData = NULL;
1015     m_clientDataType = wxClientData_None;
1016 }
1017
1018 wxEvtHandler::~wxEvtHandler()
1019 {
1020     // Takes itself out of the list of handlers
1021     if (m_previousHandler)
1022         m_previousHandler->m_nextHandler = m_nextHandler;
1023
1024     if (m_nextHandler)
1025         m_nextHandler->m_previousHandler = m_previousHandler;
1026
1027     if (m_dynamicEvents)
1028     {
1029         for ( wxList::iterator it = m_dynamicEvents->begin(),
1030                                end = m_dynamicEvents->end();
1031               it != end;
1032               ++it )
1033         {
1034 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1035             wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1036 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1037             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1038 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1039
1040             if (entry->m_callbackUserData)
1041                 delete entry->m_callbackUserData;
1042             delete entry;
1043         }
1044         delete m_dynamicEvents;
1045     };
1046
1047     if (m_pendingEvents)
1048         m_pendingEvents->DeleteContents(true);
1049     delete m_pendingEvents;
1050
1051 #if wxUSE_THREADS
1052 #  if !defined(__VISAGECPP__)
1053     delete m_eventsLocker;
1054 #  endif
1055
1056     // Remove us from wxPendingEvents if necessary.
1057     if(wxPendingEventsLocker)
1058         wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1059     if ( wxPendingEvents )
1060     {
1061         // Delete all occurences of this from the list of pending events
1062         while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1063     }
1064     if(wxPendingEventsLocker)
1065         wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1066 #endif
1067
1068     // we only delete object data, not untyped
1069     if ( m_clientDataType == wxClientData_Object )
1070         delete m_clientObject;
1071 }
1072
1073 #if wxUSE_THREADS
1074
1075 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1076 {
1077     // check that we are really in a child thread
1078     wxASSERT_MSG( !wxThread::IsMain(),
1079                   wxT("use ProcessEvent() in main thread") );
1080
1081     AddPendingEvent(event);
1082
1083     return true;
1084 }
1085
1086 void wxEvtHandler::ClearEventLocker()
1087 {
1088 #if !defined(__VISAGECPP__)
1089     delete m_eventsLocker;
1090     m_eventsLocker = NULL;
1091 #endif
1092 }
1093
1094 #endif // wxUSE_THREADS
1095
1096 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1097 {
1098     // 1) Add event to list of pending events of this event handler
1099
1100     wxEvent *eventCopy = event.Clone();
1101
1102     // we must be able to copy the events here so the event class must
1103     // implement Clone() properly instead of just providing a NULL stab for it
1104     wxCHECK_RET( eventCopy,
1105                  _T("events of this type aren't supposed to be posted") );
1106
1107     wxENTER_CRIT_SECT( Lock() );
1108
1109     if ( !m_pendingEvents )
1110       m_pendingEvents = new wxList;
1111
1112     m_pendingEvents->Append(eventCopy);
1113
1114     wxLEAVE_CRIT_SECT( Lock() );
1115
1116     // 2) Add this event handler to list of event handlers that
1117     //    have pending events.
1118
1119     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1120
1121     if ( !wxPendingEvents )
1122         wxPendingEvents = new wxList;
1123     wxPendingEvents->Append(this);
1124
1125     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1126
1127     // 3) Inform the system that new pending events are somewhere,
1128     //    and that these should be processed in idle time.
1129     wxWakeUpIdle();
1130 }
1131
1132 void wxEvtHandler::ProcessPendingEvents()
1133 {
1134     // this method is only called by wxApp if this handler does have
1135     // pending events
1136     wxCHECK_RET( m_pendingEvents,
1137                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
1138
1139     wxENTER_CRIT_SECT( Lock() );
1140
1141     // we leave the loop once we have processed all events that were present at
1142     // the start of ProcessPendingEvents because otherwise we could get into
1143     // infinite loop if the pending event handler execution resulted in another
1144     // event being posted
1145     size_t n = m_pendingEvents->size();
1146     for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1147           node;
1148           node = m_pendingEvents->GetFirst() )
1149     {
1150         wxEvent *event = (wxEvent *)node->GetData();
1151
1152         // It's importan we remove event from list before processing it.
1153         // Else a nested event loop, for example from a modal dialog, might
1154         // process the same event again.
1155
1156         m_pendingEvents->Erase(node);
1157
1158         wxLEAVE_CRIT_SECT( Lock() );
1159
1160         ProcessEvent(*event);
1161
1162         delete event;
1163
1164         wxENTER_CRIT_SECT( Lock() );
1165
1166         if ( --n == 0 )
1167             break;
1168     }
1169
1170     wxLEAVE_CRIT_SECT( Lock() );
1171 }
1172
1173 /*
1174  * Event table stuff
1175  */
1176 /* static */ bool
1177 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1178                                     wxEvtHandler *handler,
1179                                     wxEvent& event)
1180 {
1181     int tableId1 = entry.m_id,
1182         tableId2 = entry.m_lastId;
1183
1184     // match only if the event type is the same and the id is either -1 in
1185     // the event table (meaning "any") or the event id matches the id
1186     // specified in the event table either exactly or by falling into
1187     // range between first and last
1188     if ((tableId1 == wxID_ANY) ||
1189         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1190         (tableId2 != wxID_ANY &&
1191          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1192     {
1193         event.Skip(false);
1194         event.m_callbackUserData = entry.m_callbackUserData;
1195
1196 #if wxUSE_EXCEPTIONS
1197         if ( wxTheApp )
1198         {
1199             // call the handler via wxApp method which allows the user to catch
1200             // any exceptions which may be thrown by any handler in the program
1201             // in one place
1202             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1203         }
1204         else
1205 #endif // wxUSE_EXCEPTIONS
1206         {
1207             // no need for an extra virtual function call
1208             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1209         }
1210
1211         if (!event.GetSkipped())
1212             return true;
1213     }
1214
1215     return false;
1216 }
1217
1218 bool wxEvtHandler::TryParent(wxEvent& event)
1219 {
1220     if ( wxTheApp && (this != wxTheApp) )
1221     {
1222         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1223         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1224         // processed appropriately via SearchEventTable.
1225         if ( event.GetEventType() != wxEVT_IDLE )
1226         {
1227             if ( wxTheApp->ProcessEvent(event) )
1228                 return true;
1229         }
1230     }
1231
1232     return false;
1233 }
1234
1235 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1236 {
1237     // allow the application to hook into event processing
1238     if ( wxTheApp )
1239     {
1240         int rc = wxTheApp->FilterEvent(event);
1241         if ( rc != -1 )
1242         {
1243             wxASSERT_MSG( rc == 1 || rc == 0,
1244                           _T("unexpected wxApp::FilterEvent return value") );
1245
1246             return rc != 0;
1247         }
1248         //else: proceed normally
1249     }
1250
1251     // An event handler can be enabled or disabled
1252     if ( GetEvtHandlerEnabled() )
1253     {
1254         // if we have a validator, it has higher priority than our own event
1255         // table
1256         if ( TryValidator(event) )
1257             return true;
1258
1259         // Handle per-instance dynamic event tables first
1260         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1261             return true;
1262
1263         // Then static per-class event tables
1264         if ( GetEventHashTable().HandleEvent(event, this) )
1265             return true;
1266     }
1267
1268     // Try going down the event handler chain
1269     if ( GetNextHandler() )
1270     {
1271         if ( GetNextHandler()->ProcessEvent(event) )
1272             return true;
1273     }
1274
1275     // Finally propagate the event upwards the window chain and/or to the
1276     // application object as necessary
1277     return TryParent(event);
1278 }
1279
1280
1281 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1282 {
1283     const wxEventType eventType = event.GetEventType();
1284     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1285     {
1286         const wxEventTableEntry& entry = table.entries[i];
1287         if ( eventType == entry.m_eventType )
1288         {
1289             if ( ProcessEventIfMatches(entry, this, event) )
1290                 return true;
1291         }
1292     }
1293
1294     return false;
1295 }
1296
1297 void wxEvtHandler::Connect( int id, int lastId,
1298                             int eventType,
1299                             wxObjectEventFunction func,
1300                             wxObject *userData,
1301                             wxEvtHandler* eventSink )
1302 {
1303 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1304     wxEventTableEntry *entry = new wxEventTableEntry;
1305     entry->m_eventType = eventType;
1306     entry->m_id = id;
1307     entry->m_lastId = lastId;
1308     entry->m_fn = func;
1309     entry->m_callbackUserData = userData;
1310 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1311     wxDynamicEventTableEntry *entry =
1312         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1313 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1314
1315     if (!m_dynamicEvents)
1316         m_dynamicEvents = new wxList;
1317
1318     // Insert at the front of the list so most recent additions are found first
1319     m_dynamicEvents->Insert( (wxObject*) entry );
1320 }
1321
1322 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1323                   wxObjectEventFunction func,
1324                   wxObject *userData,
1325                   wxEvtHandler* eventSink )
1326 {
1327     if (!m_dynamicEvents)
1328         return false;
1329
1330     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1331     while (node)
1332     {
1333 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1334             wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1335 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1336             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1337 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1338
1339         if ((entry->m_id == id) &&
1340             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1341             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1342             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1343             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1344             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1345         {
1346             if (entry->m_callbackUserData)
1347                 delete entry->m_callbackUserData;
1348             m_dynamicEvents->Erase( node );
1349             delete entry;
1350             return true;
1351         }
1352         node = node->GetNext();
1353     }
1354     return false;
1355 }
1356
1357 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1358 {
1359     wxCHECK_MSG( m_dynamicEvents, false,
1360                  wxT("caller should check that we have dynamic events") );
1361
1362     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1363     while (node)
1364     {
1365 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1366         wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1367 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1368         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1369 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1370
1371         // get next node before (maybe) calling the event handler as it could
1372         // call Disconnect() invalidating the current node
1373         node = node->GetNext();
1374
1375         if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1376         {
1377             wxEvtHandler *handler =
1378 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1379                                     entry->m_eventSink ? entry->m_eventSink
1380                                                        :
1381 #endif
1382                                                          this;
1383
1384             if ( ProcessEventIfMatches(*entry, handler, event) )
1385             {
1386                 return true;
1387             }
1388         }
1389     }
1390
1391     return false;
1392 }
1393
1394 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1395 {
1396     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1397                   wxT("can't have both object and void client data") );
1398
1399     if ( m_clientObject )
1400         delete m_clientObject;
1401
1402     m_clientObject = data;
1403     m_clientDataType = wxClientData_Object;
1404 }
1405
1406 wxClientData *wxEvtHandler::DoGetClientObject() const
1407 {
1408     // it's not an error to call GetClientObject() on a window which doesn't
1409     // have client data at all - NULL will be returned
1410     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1411                   wxT("this window doesn't have object client data") );
1412
1413     return m_clientObject;
1414 }
1415
1416 void wxEvtHandler::DoSetClientData( void *data )
1417 {
1418     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1419                   wxT("can't have both object and void client data") );
1420
1421     m_clientData = data;
1422     m_clientDataType = wxClientData_Void;
1423 }
1424
1425 void *wxEvtHandler::DoGetClientData() const
1426 {
1427     // it's not an error to call GetClientData() on a window which doesn't have
1428     // client data at all - NULL will be returned
1429     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1430                   wxT("this window doesn't have void client data") );
1431
1432     return m_clientData;
1433 }
1434
1435 #endif // wxUSE_BASE
1436
1437 #if wxUSE_GUI
1438
1439 // Find a window with the focus, that is also a descendant of the given window.
1440 // This is used to determine the window to initially send commands to.
1441 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1442 {
1443     // Process events starting with the window with the focus, if any.
1444     wxWindow* focusWin = wxWindow::FindFocus();
1445     wxWindow* win = focusWin;
1446
1447     // Check if this is a descendant of this frame.
1448     // If not, win will be set to NULL.
1449     while (win)
1450     {
1451         if (win == ancestor)
1452             break;
1453         else
1454             win = win->GetParent();
1455     }
1456     if (win == (wxWindow*) NULL)
1457         focusWin = (wxWindow*) NULL;
1458
1459     return focusWin;
1460 }
1461
1462 // ----------------------------------------------------------------------------
1463 // wxEventBlocker
1464 // ----------------------------------------------------------------------------
1465
1466 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1467 {
1468     wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1469
1470     m_window = win;
1471
1472     Block(type);
1473     m_window->PushEventHandler(this);
1474 }
1475
1476 wxEventBlocker::~wxEventBlocker()
1477 {
1478     wxEvtHandler *popped = m_window->PopEventHandler(false);
1479     wxCHECK_RET(popped == this,
1480         wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1481 }
1482
1483 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1484 {
1485     // should this event be blocked?
1486     for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1487     {
1488         wxEventType t = (wxEventType)m_eventsToBlock[i];
1489         if ( t == wxEVT_ANY || t == event.GetEventType() )
1490             return true;   // yes, it should: mark this event as processed
1491     }
1492
1493     return false;
1494 }
1495
1496 #endif // wxUSE_GUI