src/common/event.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) && !defined(__EMX__)
  21 // Some older compilers (such as EMX) cannot handle
  22 // #pragma interface/implementation correctly, iff
  23 // #pragma implementation is used in _two_ translation
  24 // units (as created by e.g. event.cpp compiled for
  25 // libwx_base and event.cpp compiled for libwx_gui_core).
  26 // So we must not use those pragmas for those compilers in
  27 // such files.
  28     #pragma implementation "event.h"
  29 #endif
  30
  31 // For compilers that support precompilation, includes "wx.h".
  32 #include "wx/wxprec.h"
  33
  34 #ifdef __BORLANDC__
  35     #pragma hdrstop
  36 #endif
  37
  38 #ifndef WX_PRECOMP
  39     #include "wx/defs.h"
  40     #include "wx/app.h"
  41     #include "wx/list.h"
  42
  43     #if wxUSE_GUI
  44         #include "wx/control.h"
  45         #include "wx/utils.h"
  46         #include "wx/dc.h"
  47         #include "wx/textctrl.h"
  48     #endif // wxUSE_GUI
  49 #endif
  50
  51 #include "wx/event.h"
  52 #include "wx/module.h"
  53
  54 #if wxUSE_GUI
  55     #include "wx/validate.h"
  56 #if wxUSE_STOPWATCH
  57     #include "wx/stopwatch.h"
  58 #endif
  59 #endif // wxUSE_GUI
  60
  61 // ----------------------------------------------------------------------------
  62 // wxWin macros
  63 // ----------------------------------------------------------------------------
  64
  65 #if wxUSE_BASE
  66     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  67     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  68 #endif // wxUSE_BASE
  69
  70 #if wxUSE_GUI
  71     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  91     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  92     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  93     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  94     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  95     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  96     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  97     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  98     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  99     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
 100     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
 101     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
 102     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
 103     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
 104     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
 105     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
 106 #endif // wxUSE_GUI
 107
 108 #if wxUSE_BASE
 109
 110 const wxEventTable *wxEvtHandler::GetEventTable() const
 111     { return &wxEvtHandler::sm_eventTable; }
 112
 113 const wxEventTable wxEvtHandler::sm_eventTable =
 114     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 115
 116 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 117     { return wxEvtHandler::sm_eventHashTable; }
 118
 119 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 120
 121 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 122     { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 123
 124
 125 #ifdef __WXDEBUG__
 126 // Clear up event hash table contents or we can get problems
 127 // when C++ is cleaning up the static object
 128 class wxEventTableEntryModule: public wxModule
 129 {
 130 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 131 public:
 132     wxEventTableEntryModule() {}
 133     bool OnInit() { return true; }
 134     void OnExit()
 135     {
 136         wxEventHashTable::ClearAll();
 137     }
 138 };
 139 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 140 #endif
 141
 142 // ----------------------------------------------------------------------------
 143 // global variables
 144 // ----------------------------------------------------------------------------
 145
 146 // To put pending event handlers
 147 wxList *wxPendingEvents = (wxList *)NULL;
 148
 149 #if wxUSE_THREADS
 150     // protects wxPendingEvents list
 151     wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
 152 #endif
 153
 154 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 155
 156 // common event types are defined here, other event types are defined by the
 157 // components which use them
 158
 159 const wxEventType wxEVT_FIRST = 10000;
 160 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 161
 162 DEFINE_EVENT_TYPE(wxEVT_NULL)
 163 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 164 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 165
 166 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 167
 168 #endif // wxUSE_BASE
 169
 170 #if wxUSE_GUI
 171
 172 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 173
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 179 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 180 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 181 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 182 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 183 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 184 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 185 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 186 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 187 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 188 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 189 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 190
 191 // Sockets and timers send events, too
 192 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 193
 194 // Mouse event types
 195 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 196 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 197 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 198 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 199 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 200 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 201 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 202 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 203 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 204 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 205 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 206 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 207 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 208 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 209 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 210 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 211
 212 // Non-client mouse events
 213 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 214 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 215 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 216 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 217 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 218 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 219 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 220 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 221 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 222 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 223 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 224 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 225
 226 // Character input event type
 227 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 228 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 229 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 230 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 231 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 232 #if wxUSE_HOTKEY
 233 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 234 #endif
 235
 236 // Set cursor event
 237 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 238
 239 // wxScrollbar and wxSlider event identifiers
 240 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 243 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 244 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 245 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 246 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 247 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 248 DEFINE_EVENT_TYPE(wxEVT_SCROLL_ENDSCROLL)
 249
 250 // Scroll events from wxWindow
 251 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 252 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 253 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 254 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 255 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 256 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 257 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 258 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 259
 260 // System events
 261 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 262 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 263 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 264 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 265 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 266 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 267 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 268 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 269 DEFINE_EVENT_TYPE(wxEVT_POWER)
 270 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 271 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 272 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 273 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 274 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 275 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 276 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 277 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 278 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 279 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 280 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 281 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 282 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 283 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 284 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 285 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 286 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 287 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 288 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 289 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 290 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 291 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 292 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 293 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 294 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 295 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 296 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 297 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 298 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 299 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 300
 301 // Generic command events
 302 // Note: a click is a higher-level event than button down/up
 303 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 304 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 305 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 306 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 307 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 308 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 309 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 310
 311 // Help events
 312 DEFINE_EVENT_TYPE(wxEVT_HELP)
 313 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 314
 315 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 316
 317 #endif // wxUSE_GUI
 318
 319 #if wxUSE_BASE
 320
 321 // ============================================================================
 322 // implementation
 323 // ============================================================================
 324
 325 // ----------------------------------------------------------------------------
 326 // event initialization
 327 // ----------------------------------------------------------------------------
 328
 329 int wxNewEventType()
 330 {
 331     // MT-FIXME
 332     static int s_lastUsedEventType = wxEVT_FIRST;
 333
 334     return s_lastUsedEventType++;
 335 }
 336
 337 // ----------------------------------------------------------------------------
 338 // wxEvent
 339 // ----------------------------------------------------------------------------
 340
 341 /*
 342  * General wxWidgets events, covering
 343  * all interesting things that might happen (button clicking, resizing,
 344  * setting text in widgets, etc.).
 345  *
 346  * For each completely new event type, derive a new event class.
 347  *
 348  */
 349
 350 wxEvent::wxEvent(int theId, wxEventType commandType )
 351 {
 352     m_eventType = commandType;
 353     m_eventObject = (wxObject *) NULL;
 354     m_timeStamp = 0;
 355     m_id = theId;
 356     m_skipped = false;
 357     m_callbackUserData = (wxObject *) NULL;
 358     m_isCommandEvent = false;
 359     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 360 }
 361
 362 wxEvent::wxEvent(const wxEvent &src)
 363     : wxObject()
 364     , m_eventObject(src.m_eventObject)
 365     , m_eventType(src.m_eventType)
 366     , m_timeStamp(src.m_timeStamp)
 367     , m_id(src.m_id)
 368     , m_callbackUserData(src.m_callbackUserData)
 369     , m_propagationLevel(src.m_propagationLevel)
 370     , m_skipped(src.m_skipped)
 371     , m_isCommandEvent(src.m_isCommandEvent)
 372 {
 373 }
 374
 375 #endif // wxUSE_BASE
 376
 377 #if wxUSE_GUI
 378
 379 /*
 380  * Command events
 381  *
 382  */
 383
 384 #ifdef __VISUALC__
 385     // 'this' : used in base member initializer list (for m_commandString)
 386     #pragma warning(disable:4355)
 387 #endif
 388
 389 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 390               : wxEvent(theId, commandType)
 391 #if WXWIN_COMPATIBILITY_2_4
 392               , m_commandString(this)
 393 #endif
 394 {
 395     m_clientData = (char *) NULL;
 396     m_clientObject = (wxClientData *) NULL;
 397     m_extraLong = 0;
 398     m_commandInt = 0;
 399     m_isCommandEvent = true;
 400
 401     // the command events are propagated upwards by default
 402     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 403 }
 404
 405 #ifdef __VISUALC__
 406     #pragma warning(default:4355)
 407 #endif
 408
 409 wxString wxCommandEvent::GetString() const
 410 {
 411     if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
 412         return m_cmdString;
 413     else
 414     {
 415         wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
 416         if(txt)
 417             return txt->GetValue();
 418         else
 419             return m_cmdString;
 420     }
 421 }
 422
 423 /*
 424  * UI update events
 425  */
 426
 427 #if wxUSE_LONGLONG
 428 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 429 #endif
 430
 431 long wxUpdateUIEvent::sm_updateInterval = 0;
 432
 433 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 434
 435 // Can we update?
 436 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
 437 {
 438     // Don't update if we've switched global updating off
 439     // and this window doesn't support updates.
 440     if (win &&
 441        (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 442        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 443         return false;
 444
 445     if (sm_updateInterval == -1)
 446         return false;
 447
 448     if (sm_updateInterval == 0)
 449         return true;
 450
 451 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 452     wxLongLong now = wxGetLocalTimeMillis();
 453     if (now > (sm_lastUpdate + sm_updateInterval))
 454     {
 455         return true;
 456     }
 457
 458     return false;
 459 #else
 460     // If we don't have wxStopWatch or wxLongLong, we
 461     // should err on the safe side and update now anyway.
 462     return true;
 463 #endif
 464 }
 465
 466 // Reset the update time to provide a delay until the next
 467 // time we should update
 468 void wxUpdateUIEvent::ResetUpdateTime()
 469 {
 470 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 471     if (sm_updateInterval > 0)
 472     {
 473         wxLongLong now = wxGetLocalTimeMillis();
 474         if (now > (sm_lastUpdate + sm_updateInterval))
 475         {
 476             sm_lastUpdate = now;
 477         }
 478     }
 479 #endif
 480 }
 481
 482 /*
 483  * Idle events
 484  */
 485
 486 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 487
 488 // Can we send an idle event?
 489 bool wxIdleEvent::CanSend(wxWindow* win)
 490 {
 491     // Don't update if we've switched global updating off
 492     // and this window doesn't support updates.
 493     if (win &&
 494        (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
 495        ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
 496         return false;
 497
 498     return true;
 499 }
 500
 501 /*
 502  * Scroll events
 503  */
 504
 505 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 506                              int id,
 507                              int pos,
 508                              int orient)
 509     : wxCommandEvent(commandType, id)
 510 {
 511     m_extraLong = orient;
 512     m_commandInt = pos;
 513 }
 514
 515 /*
 516  * ScrollWin events
 517  */
 518
 519 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 520                                    int pos,
 521                                    int orient)
 522 {
 523     m_eventType = commandType;
 524     m_extraLong = orient;
 525     m_commandInt = pos;
 526 }
 527
 528 /*
 529  * Mouse events
 530  *
 531  */
 532
 533 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 534 {
 535     m_eventType = commandType;
 536     m_metaDown = false;
 537     m_altDown = false;
 538     m_controlDown = false;
 539     m_shiftDown = false;
 540     m_leftDown = false;
 541     m_rightDown = false;
 542     m_middleDown = false;
 543     m_x = 0;
 544     m_y = 0;
 545     m_wheelRotation = 0;
 546     m_wheelDelta = 0;
 547     m_linesPerAction = 0;
 548 }
 549
 550 void wxMouseEvent::Assign(const wxMouseEvent& event)
 551 {
 552     m_eventType = event.m_eventType;
 553
 554     m_x = event.m_x;
 555     m_y = event.m_y;
 556
 557     m_leftDown = event.m_leftDown;
 558     m_middleDown = event.m_middleDown;
 559     m_rightDown = event.m_rightDown;
 560
 561     m_controlDown = event.m_controlDown;
 562     m_shiftDown = event.m_shiftDown;
 563     m_altDown = event.m_altDown;
 564     m_metaDown = event.m_metaDown;
 565
 566     m_wheelRotation = event.m_wheelRotation;
 567     m_wheelDelta = event.m_wheelDelta;
 568     m_linesPerAction = event.m_linesPerAction;
 569 }
 570
 571 // return true if was a button dclick event
 572 bool wxMouseEvent::ButtonDClick(int but) const
 573 {
 574     switch (but)
 575     {
 576         default:
 577             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 578             // fall through
 579
 580         case wxMOUSE_BTN_ANY:
 581             return (LeftDClick() || MiddleDClick() || RightDClick());
 582
 583         case wxMOUSE_BTN_LEFT:
 584             return LeftDClick();
 585
 586         case wxMOUSE_BTN_MIDDLE:
 587             return MiddleDClick();
 588
 589         case wxMOUSE_BTN_RIGHT:
 590             return RightDClick();
 591     }
 592 }
 593
 594 // return true if was a button down event
 595 bool wxMouseEvent::ButtonDown(int but) const
 596 {
 597     switch (but)
 598     {
 599         default:
 600             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 601             // fall through
 602
 603         case wxMOUSE_BTN_ANY:
 604             return (LeftDown() || MiddleDown() || RightDown());
 605
 606         case wxMOUSE_BTN_LEFT:
 607             return LeftDown();
 608
 609         case wxMOUSE_BTN_MIDDLE:
 610             return MiddleDown();
 611
 612         case wxMOUSE_BTN_RIGHT:
 613             return RightDown();
 614     }
 615 }
 616
 617 // return true if was a button up event
 618 bool wxMouseEvent::ButtonUp(int but) const
 619 {
 620     switch (but)
 621     {
 622         default:
 623             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 624             // fall through
 625
 626         case wxMOUSE_BTN_ANY:
 627             return (LeftUp() || MiddleUp() || RightUp());
 628
 629         case wxMOUSE_BTN_LEFT:
 630             return LeftUp();
 631
 632         case wxMOUSE_BTN_MIDDLE:
 633             return MiddleUp();
 634
 635         case wxMOUSE_BTN_RIGHT:
 636             return RightUp();
 637     }
 638 }
 639
 640 // return true if the given button is currently changing state
 641 bool wxMouseEvent::Button(int but) const
 642 {
 643     switch (but)
 644     {
 645         default:
 646             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 647             // fall through
 648
 649         case wxMOUSE_BTN_ANY:
 650             return ButtonUp(wxMOUSE_BTN_ANY) ||
 651                     ButtonDown(wxMOUSE_BTN_ANY) ||
 652                         ButtonDClick(wxMOUSE_BTN_ANY);
 653
 654         case wxMOUSE_BTN_LEFT:
 655             return LeftDown() || LeftUp() || LeftDClick();
 656
 657         case wxMOUSE_BTN_MIDDLE:
 658             return MiddleDown() || MiddleUp() || MiddleDClick();
 659
 660         case wxMOUSE_BTN_RIGHT:
 661             return RightDown() || RightUp() || RightDClick();
 662     }
 663 }
 664
 665 bool wxMouseEvent::ButtonIsDown(int but) const
 666 {
 667     switch (but)
 668     {
 669         default:
 670             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 671             // fall through
 672
 673         case wxMOUSE_BTN_ANY:
 674             return LeftIsDown() || MiddleIsDown() || RightIsDown();
 675
 676         case wxMOUSE_BTN_LEFT:
 677             return LeftIsDown();
 678
 679         case wxMOUSE_BTN_MIDDLE:
 680             return MiddleIsDown();
 681
 682         case wxMOUSE_BTN_RIGHT:
 683             return RightIsDown();
 684     }
 685 }
 686
 687 int wxMouseEvent::GetButton() const
 688 {
 689     for ( int i = 1; i <= 3; i++ )
 690     {
 691         if ( Button(i) )
 692         {
 693             return i;
 694         }
 695     }
 696
 697     return wxMOUSE_BTN_NONE;
 698 }
 699
 700 // Find the logical position of the event given the DC
 701 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 702 {
 703     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 704     return pt;
 705 }
 706
 707
 708 /*
 709  * Keyboard event
 710  *
 711  */
 712
 713 wxKeyEvent::wxKeyEvent(wxEventType type)
 714 {
 715     m_eventType = type;
 716     m_shiftDown = false;
 717     m_controlDown = false;
 718     m_metaDown = false;
 719     m_altDown = false;
 720     m_keyCode = 0;
 721     m_scanCode = 0;
 722 #if wxUSE_UNICODE
 723     m_uniChar = 0;
 724 #endif
 725 }
 726
 727 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 728     : wxEvent(evt)
 729 {
 730     m_x = evt.m_x;
 731     m_y = evt.m_y;
 732
 733     m_keyCode = evt.m_keyCode;
 734
 735     m_controlDown = evt.m_controlDown;
 736     m_shiftDown = evt.m_shiftDown;
 737     m_altDown = evt.m_altDown;
 738     m_metaDown = evt.m_metaDown;
 739     m_scanCode = evt.m_scanCode;
 740     m_rawCode = evt.m_rawCode;
 741     m_rawFlags = evt.m_rawFlags;
 742
 743 #if wxUSE_UNICODE
 744     m_uniChar = evt.m_uniChar;
 745 #endif
 746 }
 747
 748 long wxKeyEvent::KeyCode() const
 749 {
 750     return m_keyCode;
 751 }
 752
 753 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 754 {
 755     SetEventType(wxEVT_CREATE);
 756     SetEventObject(win);
 757 }
 758
 759 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 760 {
 761     SetEventType(wxEVT_DESTROY);
 762     SetEventObject(win);
 763 }
 764
 765 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 766                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 767 {
 768     SetEventObject(win);
 769 }
 770
 771 #endif // wxUSE_GUI
 772
 773
 774 #if wxUSE_BASE
 775
 776 // ----------------------------------------------------------------------------
 777 // wxEventHashTable
 778 // ----------------------------------------------------------------------------
 779
 780 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 781
 782 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 783
 784 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 785                 : m_table(table),
 786                   m_rebuildHash(true)
 787 {
 788     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 789
 790     m_next = sm_first;
 791     if (m_next)
 792         m_next->m_previous = this;
 793     sm_first = this;
 794 }
 795
 796 wxEventHashTable::~wxEventHashTable()
 797 {
 798     if (m_next)
 799         m_next->m_previous = m_previous;
 800     if (m_previous)
 801         m_previous->m_next = m_next;
 802     if (sm_first == this)
 803         sm_first = m_next;
 804
 805     Clear();
 806 }
 807
 808 void wxEventHashTable::Clear()
 809 {
 810     size_t i;
 811     for(i = 0; i < m_size; i++)
 812     {
 813         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 814         if (eTTnode)
 815         {
 816             delete eTTnode;
 817         }
 818     }
 819
 820     // Necessary in order to not invoke the
 821     // overloaded delete operator when statics are cleaned up
 822     if (m_eventTypeTable)
 823         delete[] m_eventTypeTable;
 824
 825     m_eventTypeTable = NULL;
 826     m_size = 0;
 827 }
 828
 829 // Clear all tables
 830 void wxEventHashTable::ClearAll()
 831 {
 832     wxEventHashTable* table = sm_first;
 833     while (table)
 834     {
 835         table->Clear();
 836         table = table->m_next;
 837     }
 838 }
 839
 840 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 841 {
 842     if (m_rebuildHash)
 843     {
 844         InitHashTable();
 845         m_rebuildHash = false;
 846     }
 847
 848     if (!m_eventTypeTable)
 849         return false;
 850
 851     // Find all entries for the given event type.
 852     wxEventType eventType = event.GetEventType();
 853     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 854     if (eTTnode && eTTnode->eventType == eventType)
 855     {
 856         // Now start the search for an event handler
 857         // that can handle an event with the given ID.
 858         const wxEventTableEntryPointerArray&
 859             eventEntryTable = eTTnode->eventEntryTable;
 860
 861         const size_t count = eventEntryTable.GetCount();
 862         for (size_t n = 0; n < count; n++)
 863         {
 864             if ( wxEvtHandler::
 865                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 866             {
 867                 return true;
 868             }
 869         }
 870     }
 871
 872     return false;
 873 }
 874
 875 void wxEventHashTable::InitHashTable()
 876 {
 877     // Loop over the event tables and all its base tables.
 878     const wxEventTable *table = &m_table;
 879     while (table)
 880     {
 881         // Retrieve all valid event handler entries
 882         const wxEventTableEntry *entry = table->entries;
 883         while (entry->m_fn != 0)
 884         {
 885             // Add the event entry in the Hash.
 886             AddEntry(*entry);
 887
 888             entry++;
 889         }
 890
 891         table = table->baseTable;
 892     }
 893
 894     // Lets free some memory.
 895     size_t i;
 896     for(i = 0; i < m_size; i++)
 897     {
 898         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 899         if (eTTnode)
 900         {
 901             eTTnode->eventEntryTable.Shrink();
 902         }
 903     }
 904 }
 905
 906 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 907 {
 908     // This might happen 'accidentally' as the app is exiting
 909     if (!m_eventTypeTable)
 910         return;
 911
 912     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 913     EventTypeTablePointer  eTTnode = *peTTnode;
 914
 915     if (eTTnode)
 916     {
 917         if (eTTnode->eventType != entry.m_eventType)
 918         {
 919             // Resize the table!
 920             GrowEventTypeTable();
 921             // Try again to add it.
 922             AddEntry(entry);
 923             return;
 924         }
 925     }
 926     else
 927     {
 928         eTTnode = new EventTypeTable;
 929         eTTnode->eventType = entry.m_eventType;
 930         *peTTnode = eTTnode;
 931     }
 932
 933     // Fill all hash entries between entry.m_id and entry.m_lastId...
 934     eTTnode->eventEntryTable.Add(&entry);
 935 }
 936
 937 void wxEventHashTable::AllocEventTypeTable(size_t size)
 938 {
 939     m_eventTypeTable = new EventTypeTablePointer[size];
 940     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 941     m_size = size;
 942 }
 943
 944 void wxEventHashTable::GrowEventTypeTable()
 945 {
 946     size_t oldSize = m_size;
 947     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 948
 949     // TODO: Search the most optimal grow sequence
 950     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 951
 952     for ( size_t i = 0; i < oldSize; /* */ )
 953     {
 954         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
 955         if (eTToldNode)
 956         {
 957             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
 958             EventTypeTablePointer  eTTnode = *peTTnode;
 959
 960             // Check for collision, we don't want any.
 961             if (eTTnode)
 962             {
 963                 GrowEventTypeTable();
 964                 continue; // Don't increment the counter,
 965                           // as we still need to add this element.
 966             }
 967             else
 968             {
 969                 // Get the old value and put it in the new table.
 970                 *peTTnode = oldEventTypeTable[i];
 971             }
 972         }
 973
 974         i++;
 975     }
 976
 977     delete[] oldEventTypeTable;
 978 }
 979
 980
 981 // ----------------------------------------------------------------------------
 982 // wxEvtHandler
 983 // ----------------------------------------------------------------------------
 984
 985 /*
 986  * Event handler
 987  */
 988
 989 wxEvtHandler::wxEvtHandler()
 990 {
 991     m_nextHandler = (wxEvtHandler *) NULL;
 992     m_previousHandler = (wxEvtHandler *) NULL;
 993     m_enabled = true;
 994     m_dynamicEvents = (wxList *) NULL;
 995     m_pendingEvents = (wxList *) NULL;
 996 #if wxUSE_THREADS
 997 #  if !defined(__VISAGECPP__)
 998     m_eventsLocker = new wxCriticalSection;
 999 #  endif
1000 #endif
1001     // no client data (yet)
1002     m_clientData = NULL;
1003     m_clientDataType = wxClientData_None;
1004 }
1005
1006 wxEvtHandler::~wxEvtHandler()
1007 {
1008     // Takes itself out of the list of handlers
1009     if (m_previousHandler)
1010         m_previousHandler->m_nextHandler = m_nextHandler;
1011
1012     if (m_nextHandler)
1013         m_nextHandler->m_previousHandler = m_previousHandler;
1014
1015     if (m_dynamicEvents)
1016     {
1017         wxList::iterator it = m_dynamicEvents->begin(),
1018                          en = m_dynamicEvents->end();
1019         for (;it != en; ++it)
1020         {
1021 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1022             wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1023 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1024             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1025 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1026
1027             if (entry->m_callbackUserData)
1028                 delete entry->m_callbackUserData;
1029             delete entry;
1030         }
1031         delete m_dynamicEvents;
1032     };
1033
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         wxPendingEvents->DeleteObject(this);
1046     }
1047     if(wxPendingEventsLocker)
1048         wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1049 #endif
1050
1051     // we only delete object data, not untyped
1052     if ( m_clientDataType == wxClientData_Object )
1053         delete m_clientObject;
1054 }
1055
1056 #if wxUSE_THREADS
1057
1058 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1059 {
1060     // check that we are really in a child thread
1061     wxASSERT_MSG( !wxThread::IsMain(),
1062                   wxT("use ProcessEvent() in main thread") );
1063
1064     AddPendingEvent(event);
1065
1066     return true;
1067 }
1068
1069 void wxEvtHandler::ClearEventLocker()
1070 {
1071 #if !defined(__VISAGECPP__)
1072     delete m_eventsLocker;
1073     m_eventsLocker = NULL;
1074 #endif
1075 };
1076
1077 #endif // wxUSE_THREADS
1078
1079 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1080 {
1081     // 1) Add event to list of pending events of this event handler
1082
1083     wxEvent *eventCopy = event.Clone();
1084
1085     // we must be able to copy the events here so the event class must
1086     // implement Clone() properly instead of just providing a NULL stab for it
1087     wxCHECK_RET( eventCopy,
1088                  _T("events of this type aren't supposed to be posted") );
1089
1090 #if defined(__VISAGECPP__)
1091     wxENTER_CRIT_SECT( m_eventsLocker);
1092 #else
1093     wxENTER_CRIT_SECT( *m_eventsLocker);
1094 #endif
1095
1096     if ( !m_pendingEvents )
1097       m_pendingEvents = new wxList;
1098
1099     m_pendingEvents->Append(eventCopy);
1100
1101 #if defined(__VISAGECPP__)
1102     wxLEAVE_CRIT_SECT( m_eventsLocker);
1103 #else
1104     wxLEAVE_CRIT_SECT( *m_eventsLocker);
1105 #endif
1106
1107     // 2) Add this event handler to list of event handlers that
1108     //    have pending events.
1109
1110     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1111
1112     if ( !wxPendingEvents )
1113         wxPendingEvents = new wxList;
1114     wxPendingEvents->Append(this);
1115
1116     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1117
1118     // 3) Inform the system that new pending events are somwehere,
1119     //    and that these should be processed in idle time.
1120     wxWakeUpIdle();
1121 }
1122
1123 void wxEvtHandler::ProcessPendingEvents()
1124 {
1125     // this method is only called by wxApp if this handler does have pending
1126     // events
1127     wxCHECK_RET( m_pendingEvents,
1128                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
1129
1130 #if defined(__VISAGECPP__)
1131     wxENTER_CRIT_SECT( m_eventsLocker);
1132 #else
1133     wxENTER_CRIT_SECT( *m_eventsLocker);
1134 #endif
1135
1136     // remember last event to process during this iteration
1137     wxList::compatibility_iterator lastPendingNode = m_pendingEvents->GetLast();
1138
1139     wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1140     while ( node )
1141     {
1142         wxEvent *event = (wxEvent *)node->GetData();
1143         m_pendingEvents->Erase(node);
1144
1145         // In ProcessEvent, new events might get added and
1146         // we can safely leave the crtical section here.
1147 #if defined(__VISAGECPP__)
1148         wxLEAVE_CRIT_SECT( m_eventsLocker);
1149 #else
1150         wxLEAVE_CRIT_SECT( *m_eventsLocker);
1151 #endif
1152         ProcessEvent(*event);
1153         delete event;
1154 #if defined(__VISAGECPP__)
1155         wxENTER_CRIT_SECT( m_eventsLocker);
1156 #else
1157         wxENTER_CRIT_SECT( *m_eventsLocker);
1158 #endif
1159
1160         // leave the loop once we have processed all events that were present
1161         // at the start of ProcessPendingEvents because otherwise we could get
1162         // into infinite loop if the pending event handler execution resulted
1163         // in another event being posted
1164         if ( node == lastPendingNode )
1165             break;
1166
1167         node = m_pendingEvents->GetFirst();
1168     }
1169
1170 #if defined(__VISAGECPP__)
1171     wxLEAVE_CRIT_SECT( m_eventsLocker);
1172 #else
1173     wxLEAVE_CRIT_SECT( *m_eventsLocker);
1174 #endif
1175 }
1176
1177 /*
1178  * Event table stuff
1179  */
1180 /* static */ bool
1181 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1182                                     wxEvtHandler *handler,
1183                                     wxEvent& event)
1184 {
1185     int tableId1 = entry.m_id,
1186         tableId2 = entry.m_lastId;
1187
1188     // match only if the event type is the same and the id is either -1 in
1189     // the event table (meaning "any") or the event id matches the id
1190     // specified in the event table either exactly or by falling into
1191     // range between first and last
1192     if ((tableId1 == wxID_ANY) ||
1193         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1194         (tableId2 != wxID_ANY &&
1195          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1196     {
1197         event.Skip(false);
1198         event.m_callbackUserData = entry.m_callbackUserData;
1199
1200 #if wxUSE_EXCEPTIONS
1201         if ( wxTheApp )
1202         {
1203             // call the handler via wxApp method which allows the user to catch
1204             // any exceptions which may be thrown by any handler in the program
1205             // in one place
1206             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1207         }
1208         else
1209 #endif // wxUSE_EXCEPTIONS
1210         {
1211             // no need for an extra virtual function call
1212             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1213         }
1214
1215         if (!event.GetSkipped())
1216             return true;
1217     }
1218
1219     return false;
1220 }
1221
1222 bool wxEvtHandler::TryParent(wxEvent& event)
1223 {
1224     if ( wxTheApp && (this != wxTheApp) )
1225     {
1226         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1227         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1228         // processed appropriately via SearchEventTable.
1229         if ( event.GetEventType() != wxEVT_IDLE )
1230         {
1231             if ( wxTheApp->ProcessEvent(event) )
1232                 return true;
1233         }
1234     }
1235
1236     return false;
1237 }
1238
1239 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1240 {
1241     // allow the application to hook into event processing
1242     if ( wxTheApp )
1243     {
1244         int rc = wxTheApp->FilterEvent(event);
1245         if ( rc != -1 )
1246         {
1247             wxASSERT_MSG( rc == 1 || rc == 0,
1248                           _T("unexpected wxApp::FilterEvent return value") );
1249
1250             return rc != 0;
1251         }
1252         //else: proceed normally
1253     }
1254
1255     // An event handler can be enabled or disabled
1256     if ( GetEvtHandlerEnabled() )
1257     {
1258         // if we have a validator, it has higher priority than our own event
1259         // table
1260         if ( TryValidator(event) )
1261             return true;
1262
1263         // Handle per-instance dynamic event tables first
1264         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1265             return true;
1266
1267         // Then static per-class event tables
1268         if ( GetEventHashTable().HandleEvent(event, this) )
1269             return true;
1270     }
1271
1272     // Try going down the event handler chain
1273     if ( GetNextHandler() )
1274     {
1275         if ( GetNextHandler()->ProcessEvent(event) )
1276             return true;
1277     }
1278
1279     // Finally propagate the event upwards the window chain and/or to the
1280     // application object as necessary
1281     return TryParent(event);
1282 }
1283
1284
1285 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1286 {
1287     const wxEventType eventType = event.GetEventType();
1288     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1289     {
1290         const wxEventTableEntry& entry = table.entries[i];
1291         if ( eventType == entry.m_eventType )
1292         {
1293             if ( ProcessEventIfMatches(entry, this, event) )
1294                 return true;
1295         }
1296     }
1297
1298     return false;
1299 }
1300
1301 void wxEvtHandler::Connect( int id, int lastId,
1302                             int eventType,
1303                             wxObjectEventFunction func,
1304                             wxObject *userData,
1305                             wxEvtHandler* eventSink )
1306 {
1307 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1308     wxEventTableEntry *entry = new wxEventTableEntry;
1309     entry->m_eventType = eventType;
1310     entry->m_id = id;
1311     entry->m_lastId = lastId;
1312     entry->m_fn = func;
1313     entry->m_callbackUserData = userData;
1314 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1315     wxDynamicEventTableEntry *entry =
1316         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1317 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1318
1319     if (!m_dynamicEvents)
1320         m_dynamicEvents = new wxList;
1321
1322     // Insert at the front of the list so most recent additions are found first
1323     m_dynamicEvents->Insert( (wxObject*) entry );
1324 }
1325
1326 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1327                   wxObjectEventFunction func,
1328                   wxObject *userData,
1329                   wxEvtHandler* eventSink )
1330 {
1331     if (!m_dynamicEvents)
1332         return false;
1333
1334     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1335     while (node)
1336     {
1337 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1338             wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1339 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1340             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1341 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1342
1343         if ((entry->m_id == id) &&
1344             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1345             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1346             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1347             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1348             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1349         {
1350             if (entry->m_callbackUserData)
1351                 delete entry->m_callbackUserData;
1352             m_dynamicEvents->Erase( node );
1353             delete entry;
1354             return true;
1355         }
1356         node = node->GetNext();
1357     }
1358     return false;
1359 }
1360
1361 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1362 {
1363     wxCHECK_MSG( m_dynamicEvents, false,
1364                  wxT("caller should check that we have dynamic events") );
1365
1366     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1367     while (node)
1368     {
1369 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1370         wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1371 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1372         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1373 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
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         node = node->GetNext();
1391     }
1392
1393     return false;
1394 };
1395
1396 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1397 {
1398     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1399                   wxT("can't have both object and void client data") );
1400
1401     if ( m_clientObject )
1402         delete m_clientObject;
1403
1404     m_clientObject = data;
1405     m_clientDataType = wxClientData_Object;
1406 }
1407
1408 wxClientData *wxEvtHandler::DoGetClientObject() const
1409 {
1410     // it's not an error to call GetClientObject() on a window which doesn't
1411     // have client data at all - NULL will be returned
1412     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1413                   wxT("this window doesn't have object client data") );
1414
1415     return m_clientObject;
1416 }
1417
1418 void wxEvtHandler::DoSetClientData( void *data )
1419 {
1420     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1421                   wxT("can't have both object and void client data") );
1422
1423     m_clientData = data;
1424     m_clientDataType = wxClientData_Void;
1425 }
1426
1427 void *wxEvtHandler::DoGetClientData() const
1428 {
1429     // it's not an error to call GetClientData() on a window which doesn't have
1430     // client data at all - NULL will be returned
1431     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1432                   wxT("this window doesn't have void client data") );
1433
1434     return m_clientData;
1435 }
1436
1437 #endif // wxUSE_BASE
1438
1439 #if wxUSE_GUI
1440
1441 // Find a window with the focus, that is also a descendant of the given window.
1442 // This is used to determine the window to initially send commands to.
1443 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1444 {
1445     // Process events starting with the window with the focus, if any.
1446     wxWindow* focusWin = wxWindow::FindFocus();
1447     wxWindow* win = focusWin;
1448
1449     // Check if this is a descendant of this frame.
1450     // If not, win will be set to NULL.
1451     while (win)
1452     {
1453         if (win == ancestor)
1454             break;
1455         else
1456             win = win->GetParent();
1457     }
1458     if (win == (wxWindow*) NULL)
1459         focusWin = (wxWindow*) NULL;
1460
1461     return focusWin;
1462 }
1463
1464 #endif // wxUSE_GUI