X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dde19c2180ef8d6415af7bb2492bfcb0a2d5c7e4..11bf9fea53d75b460aaa4028a591917b6dd6fe54:/src/common/event.cpp diff --git a/src/common/event.cpp b/src/common/event.cpp index 7cd4a484c4..c9e8f11bca 100644 --- a/src/common/event.cpp +++ b/src/common/event.cpp @@ -25,10 +25,12 @@ #endif #include "wx/event.h" +#include "wx/eventfilter.h" #include "wx/evtloop.h" #ifndef WX_PRECOMP #include "wx/list.h" + #include "wx/log.h" #include "wx/app.h" #include "wx/utils.h" #include "wx/stopwatch.h" @@ -61,11 +63,11 @@ IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject) IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject) IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent) + IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxEvent) #endif // wxUSE_BASE #if wxUSE_GUI IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent) - IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxCommandEvent) IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent) IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent) IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent) @@ -117,7 +119,7 @@ wxEventHashTable &wxEvtHandler::GetEventHashTable() const wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable); const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] = - { DECLARE_EVENT_TABLE_TERMINATOR() }; + { wxDECLARE_EVENT_TABLE_TERMINATOR() }; // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors @@ -125,7 +127,7 @@ const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] = // the memory leaks when using it, however this breaks re-initializing the // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the // event tables won't be rebuilt the next time, so disable this by default -#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING +#if wxUSE_MEMORY_TRACING class wxEventTableEntryModule: public wxModule { @@ -139,7 +141,7 @@ public: IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule) -#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING +#endif // wxUSE_MEMORY_TRACING // ---------------------------------------------------------------------------- // global variables @@ -150,32 +152,38 @@ IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule) const wxEventType wxEVT_FIRST = 10000; const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000; +const wxEventType wxEVT_NULL = wxNewEventType(); -DEFINE_EVENT_TYPE(wxEVT_NULL) wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent ); +// Thread and asynchronous call events +wxDEFINE_EVENT( wxEVT_THREAD, wxThreadEvent ); +wxDEFINE_EVENT( wxEVT_ASYNC_METHOD_CALL, wxAsyncMethodCallEvent ); + #endif // wxUSE_BASE #if wxUSE_GUI -wxDEFINE_EVENT( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_CHECKBOX_CLICKED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_CHOICE_SELECTED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_SELECTED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_MENU_SELECTED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBOX_SELECTED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBUTTON_SELECTED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_SCROLLBAR_UPDATED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_VLBOX_SELECTED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_SELECTED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_RCLICKED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_ENTER, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRL_UPDATED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED, wxCommandEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_BUTTON, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_CHECKBOX, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_CHOICE, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_LISTBOX, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_LISTBOX_DCLICK, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_CHECKLISTBOX, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_MENU, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_SLIDER, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_RADIOBOX, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_RADIOBUTTON, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_SCROLLBAR, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_VLBOX, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_COMBOBOX, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_TOOL_RCLICKED, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_TOOL_ENTER, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_SPINCTRL, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_SPINCTRLDOUBLE, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_TOOL_DROPDOWN, wxCommandEvent ); +wxDEFINE_EVENT( wxEVT_COMBOBOX_DROPDOWN, wxCommandEvent); +wxDEFINE_EVENT( wxEVT_COMBOBOX_CLOSEUP, wxCommandEvent); // Mouse event types wxDEFINE_EVENT( wxEVT_LEFT_DOWN, wxMouseEvent ); @@ -203,6 +211,7 @@ wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent ); // Character input event type wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent ); +wxDEFINE_EVENT( wxEVT_AFTER_CHAR, wxKeyEvent ); wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent ); wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent ); wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent ); @@ -290,9 +299,9 @@ wxDEFINE_EVENT( wxEVT_INIT_DIALOG, wxInitDialogEvent ); wxDEFINE_EVENT( wxEVT_UPDATE_UI, wxUpdateUIEvent ); // Clipboard events -wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_COPY, wxClipboardTextEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_CUT, wxClipboardTextEvent ); -wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_PASTE, wxClipboardTextEvent ); +wxDEFINE_EVENT( wxEVT_TEXT_COPY, wxClipboardTextEvent ); +wxDEFINE_EVENT( wxEVT_TEXT_CUT, wxClipboardTextEvent ); +wxDEFINE_EVENT( wxEVT_TEXT_PASTE, wxClipboardTextEvent ); // Generic command events // Note: a click is a higher-level event than button down/up @@ -308,9 +317,6 @@ wxDEFINE_EVENT( wxEVT_COMMAND_ENTER, wxCommandEvent ); wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent ); wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent ); -// Thread event -wxDEFINE_EVENT( wxEVT_COMMAND_THREAD, wxThreadEvent ); - #endif // wxUSE_GUI #if wxUSE_BASE @@ -360,9 +366,12 @@ wxEvent::wxEvent(int theId, wxEventType commandType) m_id = theId; m_skipped = false; m_callbackUserData = NULL; + m_handlerToProcessOnlyIn = NULL; m_isCommandEvent = false; m_propagationLevel = wxEVENT_PROPAGATE_NONE; + m_propagatedFrom = NULL; m_wasProcessed = false; + m_willBeProcessedAgain = false; } wxEvent::wxEvent(const wxEvent& src) @@ -372,10 +381,13 @@ wxEvent::wxEvent(const wxEvent& src) , m_timeStamp(src.m_timeStamp) , m_id(src.m_id) , m_callbackUserData(src.m_callbackUserData) + , m_handlerToProcessOnlyIn(NULL) , m_propagationLevel(src.m_propagationLevel) + , m_propagatedFrom(NULL) , m_skipped(src.m_skipped) , m_isCommandEvent(src.m_isCommandEvent) , m_wasProcessed(false) + , m_willBeProcessedAgain(false) { } @@ -388,12 +400,18 @@ wxEvent& wxEvent::operator=(const wxEvent& src) m_timeStamp = src.m_timeStamp; m_id = src.m_id; m_callbackUserData = src.m_callbackUserData; + m_handlerToProcessOnlyIn = NULL; m_propagationLevel = src.m_propagationLevel; + m_propagatedFrom = NULL; m_skipped = src.m_skipped; m_isCommandEvent = src.m_isCommandEvent; // don't change m_wasProcessed + // While the original again could be passed to another handler, this one + // isn't going to be processed anywhere else by default. + m_willBeProcessedAgain = false; + return *this; } @@ -401,36 +419,24 @@ wxEvent& wxEvent::operator=(const wxEvent& src) #if wxUSE_GUI -/* - * Command events - * - */ - -#ifdef __VISUALC__ - // 'this' : used in base member initializer list (for m_commandString) - #pragma warning(disable:4355) -#endif +// ---------------------------------------------------------------------------- +// wxCommandEvent +// ---------------------------------------------------------------------------- wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId) : wxEvent(theId, commandType) { m_clientData = NULL; m_clientObject = NULL; - m_extraLong = 0; - m_commandInt = 0; m_isCommandEvent = true; // the command events are propagated upwards by default m_propagationLevel = wxEVENT_PROPAGATE_MAX; } -#ifdef __VISUALC__ - #pragma warning(default:4355) -#endif - wxString wxCommandEvent::GetString() const { - if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject) + if (m_eventType != wxEVT_TEXT || !m_eventObject) { return m_cmdString; } @@ -446,9 +452,9 @@ wxString wxCommandEvent::GetString() const } } -/* - * UI update events - */ +// ---------------------------------------------------------------------------- +// wxUpdateUIEvent +// ---------------------------------------------------------------------------- #if wxUSE_LONGLONG wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0; @@ -468,6 +474,13 @@ bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win) ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0))) return false; + // Don't update children of the hidden windows: this is useless as any + // change to their state won't be seen by the user anyhow. Notice that this + // argument doesn't apply to the hidden windows (with visible parent) + // themselves as they could be shown by their EVT_UPDATE_UI handler. + if ( win->GetParent() && !win->GetParent()->IsShownOnScreen() ) + return false; + if (sm_updateInterval == -1) return false; @@ -505,9 +518,9 @@ void wxUpdateUIEvent::ResetUpdateTime() #endif } -/* - * Scroll events - */ +// ---------------------------------------------------------------------------- +// wxScrollEvent +// ---------------------------------------------------------------------------- wxScrollEvent::wxScrollEvent(wxEventType commandType, int id, @@ -519,9 +532,9 @@ wxScrollEvent::wxScrollEvent(wxEventType commandType, m_commandInt = pos; } -/* - * ScrollWin events - */ +// ---------------------------------------------------------------------------- +// wxScrollWinEvent +// ---------------------------------------------------------------------------- wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType, int pos, @@ -532,10 +545,9 @@ wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType, m_commandInt = pos; } -/* - * Mouse events - * - */ +// ---------------------------------------------------------------------------- +// wxMouseEvent +// ---------------------------------------------------------------------------- wxMouseEvent::wxMouseEvent(wxEventType commandType) { @@ -552,10 +564,11 @@ wxMouseEvent::wxMouseEvent(wxEventType commandType) m_clickCount = -1; + m_wheelAxis = wxMOUSE_WHEEL_VERTICAL; m_wheelRotation = 0; m_wheelDelta = 0; m_linesPerAction = 0; - m_wheelAxis = 0; + m_columnsPerAction = 0; } void wxMouseEvent::Assign(const wxMouseEvent& event) @@ -578,6 +591,7 @@ void wxMouseEvent::Assign(const wxMouseEvent& event) m_wheelRotation = event.m_wheelRotation; m_wheelDelta = event.m_wheelDelta; m_linesPerAction = event.m_linesPerAction; + m_columnsPerAction = event.m_columnsPerAction; m_wheelAxis = event.m_wheelAxis; } @@ -702,34 +716,6 @@ bool wxMouseEvent::Button(int but) const } } -bool wxMouseEvent::ButtonIsDown(int but) const -{ - switch (but) - { - default: - wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown")); - // fall through - - case wxMOUSE_BTN_ANY: - return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down(); - - case wxMOUSE_BTN_LEFT: - return LeftIsDown(); - - case wxMOUSE_BTN_MIDDLE: - return MiddleIsDown(); - - case wxMOUSE_BTN_RIGHT: - return RightIsDown(); - - case wxMOUSE_BTN_AUX1: - return Aux1IsDown(); - - case wxMOUSE_BTN_AUX2: - return Aux2IsDown(); - } -} - int wxMouseEvent::GetButton() const { for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ ) @@ -750,52 +736,145 @@ wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const return pt; } - -/* - * Keyboard event - * - */ +// ---------------------------------------------------------------------------- +// wxKeyEvent +// ---------------------------------------------------------------------------- wxKeyEvent::wxKeyEvent(wxEventType type) { m_eventType = type; - m_keyCode = 0; - m_scanCode = 0; + m_keyCode = WXK_NONE; #if wxUSE_UNICODE - m_uniChar = 0; + m_uniChar = WXK_NONE; #endif + + m_x = + m_y = wxDefaultCoord; + m_hasPosition = false; + + InitPropagation(); } wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt) : wxEvent(evt), wxKeyboardState(evt) { - m_x = evt.m_x; - m_y = evt.m_y; + DoAssignMembers(evt); - m_keyCode = evt.m_keyCode; + InitPropagation(); +} - m_scanCode = evt.m_scanCode; - m_rawCode = evt.m_rawCode; - m_rawFlags = evt.m_rawFlags; +wxKeyEvent::wxKeyEvent(wxEventType eventType, const wxKeyEvent& evt) + : wxEvent(evt), + wxKeyboardState(evt) +{ + DoAssignMembers(evt); -#if wxUSE_UNICODE - m_uniChar = evt.m_uniChar; -#endif + m_eventType = eventType; + + InitPropagation(); +} + +void wxKeyEvent::InitPositionIfNecessary() const +{ + if ( m_hasPosition ) + return; + + // We're const because we're called from const Get[XY]() methods but we + // need to update the "cached" values. + wxKeyEvent& self = const_cast(*this); + self.m_hasPosition = true; + + // The only position we can possibly associate with the keyboard event on + // the platforms where it doesn't carry it already is the mouse position. + wxGetMousePosition(&self.m_x, &self.m_y); + + // If this event is associated with a window, the position should be in its + // client coordinates, but otherwise leave it in screen coordinates as what + // else can we use? + wxWindow* const win = wxDynamicCast(GetEventObject(), wxWindow); + if ( win ) + win->ScreenToClient(&self.m_x, &self.m_y); } +wxCoord wxKeyEvent::GetX() const +{ + InitPositionIfNecessary(); + + return m_x; +} + +wxCoord wxKeyEvent::GetY() const +{ + InitPositionIfNecessary(); + + return m_y; +} + +bool wxKeyEvent::IsKeyInCategory(int category) const +{ + switch ( GetKeyCode() ) + { + case WXK_LEFT: + case WXK_RIGHT: + case WXK_UP: + case WXK_DOWN: + case WXK_NUMPAD_LEFT: + case WXK_NUMPAD_RIGHT: + case WXK_NUMPAD_UP: + case WXK_NUMPAD_DOWN: + return (category & WXK_CATEGORY_ARROW) != 0; + + case WXK_PAGEDOWN: + case WXK_END: + case WXK_NUMPAD_PAGEUP: + case WXK_NUMPAD_PAGEDOWN: + return (category & WXK_CATEGORY_PAGING) != 0; + + case WXK_HOME: + case WXK_PAGEUP: + case WXK_NUMPAD_HOME: + case WXK_NUMPAD_END: + return (category & WXK_CATEGORY_JUMP) != 0; + + case WXK_TAB: + case WXK_NUMPAD_TAB: + return (category & WXK_CATEGORY_TAB) != 0; + + case WXK_BACK: + case WXK_DELETE: + case WXK_NUMPAD_DELETE: + return (category & WXK_CATEGORY_CUT) != 0; + + default: + return false; + } +} + +// ---------------------------------------------------------------------------- +// wxWindowCreateEvent +// ---------------------------------------------------------------------------- + wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win) { SetEventType(wxEVT_CREATE); SetEventObject(win); } +// ---------------------------------------------------------------------------- +// wxWindowDestroyEvent +// ---------------------------------------------------------------------------- + wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win) { SetEventType(wxEVT_DESTROY); SetEventObject(win); } +// ---------------------------------------------------------------------------- +// wxChildFocusEvent +// ---------------------------------------------------------------------------- + wxChildFocusEvent::wxChildFocusEvent(wxWindow *win) : wxCommandEvent(wxEVT_CHILD_FOCUS) { @@ -864,13 +943,12 @@ void wxEventHashTable::Clear() delete eTTnode; } - delete[] m_eventTypeTable; - m_eventTypeTable = NULL; + wxDELETEA(m_eventTypeTable); m_size = 0; } -#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING +#if wxUSE_MEMORY_TRACING // Clear all tables void wxEventHashTable::ClearAll() @@ -883,7 +961,7 @@ void wxEventHashTable::ClearAll() } } -#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING +#endif // wxUSE_MEMORY_TRACING bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self) { @@ -937,7 +1015,7 @@ void wxEventHashTable::InitHashTable() table = table->baseTable; } - // Lets free some memory. + // Let's free some memory. size_t i; for(i = 0; i < m_size; i++) { @@ -1073,14 +1151,11 @@ wxEvtHandler::~wxEvtHandler() delete m_dynamicEvents; } - if (m_pendingEvents) - m_pendingEvents->DeleteContents(true); - delete m_pendingEvents; - // Remove us from the list of the pending events if necessary. - wxEventLoopBase *loop = wxEventLoopBase::GetActive(); - if (loop) - loop->RemovePendingEventHandler(this); + if (wxTheApp) + wxTheApp->RemovePendingEventHandler(this); + + DeletePendingEvents(); // we only delete object data, not untyped if ( m_clientDataType == wxClientData_Object ) @@ -1107,6 +1182,45 @@ bool wxEvtHandler::IsUnlinked() const m_nextHandler == NULL; } +wxEventFilter* wxEvtHandler::ms_filterList = NULL; + +/* static */ void wxEvtHandler::AddFilter(wxEventFilter* filter) +{ + wxCHECK_RET( filter, "NULL filter" ); + + filter->m_next = ms_filterList; + ms_filterList = filter; +} + +/* static */ void wxEvtHandler::RemoveFilter(wxEventFilter* filter) +{ + wxEventFilter* prev = NULL; + for ( wxEventFilter* f = ms_filterList; f; f = f->m_next ) + { + if ( f == filter ) + { + // Set the previous list element or the list head to the next + // element. + if ( prev ) + prev->m_next = f->m_next; + else + ms_filterList = f->m_next; + + // Also reset the next pointer in the filter itself just to avoid + // having possibly dangling pointers, even though it's not strictly + // necessary. + f->m_next = NULL; + + // Skip the assert below. + return; + } + + prev = f; + } + + wxFAIL_MSG( "Filter not found" ); +} + #if wxUSE_THREADS bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event) @@ -1126,12 +1240,15 @@ void wxEvtHandler::QueueEvent(wxEvent *event) { wxCHECK_RET( event, "NULL event can't be posted" ); - wxEventLoopBase* loop = wxEventLoopBase::GetActive(); - if (!loop) + if (!wxTheApp) { // we need an event loop which manages the list of event handlers with // pending events... cannot proceed without it! - wxLogDebug("No event loop is running!"); + wxLogDebug("No application object! Cannot queue this event!"); + + // anyway delete the given event to avoid memory leaks + delete event; + return; } @@ -1139,14 +1256,14 @@ void wxEvtHandler::QueueEvent(wxEvent *event) wxENTER_CRIT_SECT( m_pendingEventsLock ); if ( !m_pendingEvents ) - m_pendingEvents = new wxList; + m_pendingEvents = new wxList; m_pendingEvents->Append(event); // 2) Add this event handler to list of event handlers that // have pending events. - loop->AppendPendingEventHandler(this); + wxTheApp->AppendPendingEventHandler(this); // only release m_pendingEventsLock now because otherwise there is a race // condition as described in the ticket #9093: we could process the event @@ -1161,14 +1278,20 @@ void wxEvtHandler::QueueEvent(wxEvent *event) wxWakeUpIdle(); } +void wxEvtHandler::DeletePendingEvents() +{ + if (m_pendingEvents) + m_pendingEvents->DeleteContents(true); + wxDELETE(m_pendingEvents); +} + void wxEvtHandler::ProcessPendingEvents() { - wxEventLoopBase* loop = wxEventLoopBase::GetActive(); - if (!loop) + if (!wxTheApp) { // we need an event loop which manages the list of event handlers with // pending events... cannot proceed without it! - wxLogDebug("No event loop is running!"); + wxLogDebug("No application object! Cannot process pending events!"); return; } @@ -1199,7 +1322,7 @@ void wxEvtHandler::ProcessPendingEvents() if (!node) { // all our events are NOT processable now... signal this: - loop->DelayPendingEventHandler(this); + wxTheApp->DelayPendingEventHandler(this); // see the comment at the beginning of evtloop.h header for the // logic behind YieldFor() and behind DelayPendingEventHandler() @@ -1221,7 +1344,7 @@ void wxEvtHandler::ProcessPendingEvents() { // if there are no more pending events left, we don't need to // stay in this list - loop->RemovePendingEventHandler(this); + wxTheApp->RemovePendingEventHandler(this); } wxLEAVE_CRIT_SECT( m_pendingEventsLock ); @@ -1233,13 +1356,10 @@ void wxEvtHandler::ProcessPendingEvents() // of this object any more } -/* - * Event table stuff - */ -/* static */ bool -wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry, - wxEvtHandler *handler, - wxEvent& event) +/* static */ +bool wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry, + wxEvtHandler *handler, + wxEvent& event) { int tableId1 = entry.m_id, tableId2 = entry.m_lastId; @@ -1277,15 +1397,8 @@ wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry, return false; } -bool wxEvtHandler::TryParent(wxEvent& event) +bool wxEvtHandler::DoTryApp(wxEvent& event) { - if ( GetNextHandler() ) - { - // the next handler will pass it to wxTheApp if it doesn't process it, - // so return from here to avoid doing it again - return GetNextHandler()->TryParent(event); - } - if ( wxTheApp && (this != wxTheApp) ) { // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always @@ -1301,75 +1414,166 @@ bool wxEvtHandler::TryParent(wxEvent& event) return false; } +bool wxEvtHandler::TryBefore(wxEvent& event) +{ +#if WXWIN_COMPATIBILITY_2_8 + // call the old virtual function to keep the code overriding it working + return TryValidator(event); +#else + wxUnusedVar(event); + return false; +#endif +} + +bool wxEvtHandler::TryAfter(wxEvent& event) +{ + // We only want to pass the window to the application object once even if + // there are several chained handlers. Ensure that this is what happens by + // only calling DoTryApp() if there is no next handler (which would do it). + // + // Notice that, unlike simply calling TryAfter() on the last handler in the + // chain only from ProcessEvent(), this also works with wxWindow object in + // the middle of the chain: its overridden TryAfter() will still be called + // and propagate the event upwards the window hierarchy even if it's not + // the last one in the chain (which, admittedly, shouldn't happen often). + if ( GetNextHandler() ) + return GetNextHandler()->TryAfter(event); + + // If this event is going to be processed in another handler next, don't + // pass it to wxTheApp now, it will be done from TryAfter() of this other + // handler. + if ( event.WillBeProcessedAgain() ) + return false; + +#if WXWIN_COMPATIBILITY_2_8 + // as above, call the old virtual function for compatibility + return TryParent(event); +#else + return DoTryApp(event); +#endif +} + bool wxEvtHandler::ProcessEvent(wxEvent& event) { - // allow the application to hook into event processing + // The very first thing we do is to allow any registered filters to hook + // into event processing in order to globally pre-process all events. // - // note that we should only do it if we're the first event handler called + // Note that we should only do it if we're the first event handler called // to avoid calling FilterEvent() multiple times as the event goes through - // the event handler chain and possibly upwards the window hierarchy + // the event handler chain and possibly upwards the window hierarchy. if ( !event.WasProcessed() ) { - if ( wxTheApp ) + for ( wxEventFilter* f = ms_filterList; f; f = f->m_next ) { -/* - CANNOT ENABLE: ProcessEvent() must always immediately process the event! - - if (wxTheApp->IsYielding() && - !wxTheApp->IsEventAllowedInsideYield(event.GetEventCategory())) - { - wxEvent* queuedEv = event.Clone(); - - // queue this event rather than processing it now - QueueEvent(queuedEv); - // the wxWakeUpIdle call shouldn't probably be done - // in this context (there's wxYield in the call stack) - - return true; - // it's not completely true that the event was processed; - // but we cannot even say it was skipped or discarded... - } - //else: either we're not inside a wxYield() call or if we are, - // we can process this event immediately. -*/ - - int rc = wxTheApp->FilterEvent(event); - if ( rc != -1 ) + int rc = f->FilterEvent(event); + if ( rc != wxEventFilter::Event_Skip ) { - wxASSERT_MSG( rc == 1 || rc == 0, - "unexpected wxApp::FilterEvent return value" ); + wxASSERT_MSG( rc == wxEventFilter::Event_Ignore || + rc == wxEventFilter::Event_Processed, + "unexpected FilterEvent() return value" ); - return rc != 0; + return rc != wxEventFilter::Event_Ignore; } //else: proceed normally } } - if ( ProcessEventHere(event) ) + // Short circuit the event processing logic if we're requested to process + // this event in this handler only, see DoTryChain() for more details. + if ( event.ShouldProcessOnlyIn(this) ) + return TryBeforeAndHere(event); + + + // Try to process the event in this handler itself. + if ( ProcessEventLocally(event) ) + { + // It is possible that DoTryChain() called from ProcessEventLocally() + // returned true but the event was not really processed: this happens + // if a custom handler ignores the request to process the event in this + // handler only and in this case we should skip the post processing + // done in TryAfter() but still return the correct value ourselves to + // indicate whether we did or did not find a handler for this event. + return !event.GetSkipped(); + } + + // If we still didn't find a handler, propagate the event upwards the + // window chain and/or to the application object. + if ( TryAfter(event) ) return true; - // pass the event to the next handler, notice that we shouldn't call - // TryParent() even if it doesn't handle the event as the last handler in - // the chain will do it - if ( GetNextHandler() ) - return GetNextHandler()->ProcessEvent(event); - // propagate the event upwards the window chain and/or to the application - // object if it wasn't processed at this level - return TryParent(event); + // No handler found anywhere, bail out. + return false; } -bool wxEvtHandler::ProcessEventHere(wxEvent& event) +bool wxEvtHandler::ProcessEventLocally(wxEvent& event) +{ + // Try the hooks which should be called before our own handlers and this + // handler itself first. Notice that we should not call ProcessEvent() on + // this one as we're already called from it, which explains why we do it + // here and not in DoTryChain() + return TryBeforeAndHere(event) || DoTryChain(event); +} + +bool wxEvtHandler::DoTryChain(wxEvent& event) +{ + for ( wxEvtHandler *h = GetNextHandler(); h; h = h->GetNextHandler() ) + { + // We need to process this event at the level of this handler only + // right now, the pre-/post-processing was either already done by + // ProcessEvent() from which we were called or will be done by it when + // we return. + // + // However we must call ProcessEvent() and not TryHereOnly() because the + // existing code (including some in wxWidgets itself) expects the + // overridden ProcessEvent() in its custom event handlers pushed on a + // window to be called. + // + // So we must call ProcessEvent() but it must not do what it usually + // does. To resolve this paradox we set up a special flag inside the + // object itself to let ProcessEvent() know that it shouldn't do any + // pre/post-processing for this event if it gets it. Note that this + // only applies to this handler, if the event is passed to another one + // by explicitly calling its ProcessEvent(), pre/post-processing should + // be done as usual. + // + // Final complication is that if the implementation of ProcessEvent() + // called wxEvent::DidntHonourProcessOnlyIn() (as the gross hack that + // is wxScrollHelperEvtHandler::ProcessEvent() does) and ignored our + // request to process event in this handler only, we have to compensate + // for it by not processing the event further because this was already + // done by that rogue event handler. + wxEventProcessInHandlerOnly processInHandlerOnly(event, h); + if ( h->ProcessEvent(event) ) + { + // Make sure "skipped" flag is not set as the event was really + // processed in this case. Normally it shouldn't be set anyhow but + // make sure just in case the user code does something strange. + event.Skip(false); + + return true; + } + + if ( !event.ShouldProcessOnlyIn(h) ) + { + // Still return true to indicate that no further processing should + // be undertaken but ensure that "skipped" flag is set so that the + // caller knows that the event was not really processed. + event.Skip(); + + return true; + } + } + + return false; +} + +bool wxEvtHandler::TryHereOnly(wxEvent& event) { // If the event handler is disabled it doesn't process any events if ( !GetEvtHandlerEnabled() ) return false; - // If we have a validator, it has higher priority than our own event - // handlers - if ( TryValidator(event) ) - return true; - // Handle per-instance dynamic event tables first if ( m_dynamicEvents && SearchDynamicEventTable(event) ) return true; @@ -1378,6 +1582,17 @@ bool wxEvtHandler::ProcessEventHere(wxEvent& event) if ( GetEventHashTable().HandleEvent(event, this) ) return true; +#ifdef wxHAS_CALL_AFTER + // There is an implicit entry for async method calls processing in every + // event handler: + if ( event.GetEventType() == wxEVT_ASYNC_METHOD_CALL && + event.GetEventObject() == this ) + { + static_cast(event).Execute(); + return true; + } +#endif // wxHAS_CALL_AFTER + // We don't have a handler for this event. return false; } @@ -1393,9 +1608,15 @@ bool wxEvtHandler::SafelyProcessEvent(wxEvent& event) } catch ( ... ) { - wxEventLoopBase *loop = wxEventLoopBase::GetActive(); + // notice that we do it in 2 steps to avoid warnings about possibly + // uninitialized loop variable from some versions of g++ which are not + // smart enough to figure out that GetActive() doesn't throw and so + // that loop will always be initialized + wxEventLoopBase *loop = NULL; try { + loop = wxEventLoopBase::GetActive(); + if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() ) { if ( loop ) @@ -1418,7 +1639,6 @@ bool wxEvtHandler::SafelyProcessEvent(wxEvent& event) #endif // wxUSE_EXCEPTIONS } - bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event) { const wxEventType eventType = event.GetEventType(); @@ -1435,11 +1655,11 @@ bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event) return false; } -void wxEvtHandler::DoConnect(int id, - int lastId, - wxEventType eventType, - wxEventFunctor *func, - wxObject *userData) +void wxEvtHandler::DoBind(int id, + int lastId, + wxEventType eventType, + wxEventFunctor *func, + wxObject *userData) { wxDynamicEventTableEntry *entry = new wxDynamicEventTableEntry(eventType, id, lastId, func, userData); @@ -1463,24 +1683,15 @@ void wxEvtHandler::DoConnect(int id, } bool -wxEvtHandler::DoDisconnect(int id, - int lastId, - wxEventType eventType, - const wxEventFunctor& func, - wxObject *userData) +wxEvtHandler::DoUnbind(int id, + int lastId, + wxEventType eventType, + const wxEventFunctor& func, + wxObject *userData) { if (!m_dynamicEvents) return false; - // Remove connection from tracker node (wxEventConnectionRef) - wxEvtHandler *eventSink = func.GetEvtHandler(); - if ( eventSink && eventSink != this ) - { - wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink); - if ( evtConnRef ) - evtConnRef->DecRef(); - } - wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(); while (node) { @@ -1489,9 +1700,18 @@ wxEvtHandler::DoDisconnect(int id, if ((entry->m_id == id) && ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) && ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) && - entry->m_fn->Matches(func) && + entry->m_fn->IsMatching(func) && ((entry->m_callbackUserData == userData) || !userData)) { + // Remove connection from tracker node (wxEventConnectionRef) + wxEvtHandler *eventSink = entry->m_fn->GetEvtHandler(); + if ( eventSink && eventSink != this ) + { + wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink); + if ( evtConnRef ) + evtConnRef->DecRef(); + } + delete entry->m_callbackUserData; m_dynamicEvents->Erase( node ); delete entry;