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second part of #10320: move wxApp event handling functions to wxEventLoopBase (in particular move Yield() functions); add backward compatible redirections to wxApp; update docs; remove global lists wxPendingEvents and wxPendingEventsLocker

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58911 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Francesco Montorsi
2009-02-15 14:25:08 +00:00
parent 145bbf1fdf
commit dde19c2180
50 changed files with 1104 additions and 1070 deletions
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119
include/wx/app.h
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@@ -221,6 +221,10 @@ public:
// had been already processed or won't be processed at all, respectively
virtual int FilterEvent(wxEvent& event);
// return true if we're running event loop, i.e. if the events can
// (already) be dispatched
static bool IsMainLoopRunning();
#if wxUSE_EXCEPTIONS
// execute the functor to handle the given event
//
@@ -246,87 +250,34 @@ public:
// exit, if you need to really handle the exceptions you need to override
// OnExceptionInMainLoop()
virtual void OnUnhandledException();
#endif // wxUSE_EXCEPTIONS
// event processing functions
// --------------------------
// return true if we're running event loop, i.e. if the events can
// (already) be dispatched
static bool IsMainLoopRunning();
// temporary suspends processing of the pending events
virtual void SuspendProcessingOfPendingEvents();
// resume processing of the pending events previously stopped because of a
// call to SuspendProcessingOfPendingEvents()
virtual void ResumeProcessingOfPendingEvents();
// process all events in the wxHandlersWithPendingEvents list -- it is necessary
// to call this function to process posted events. This happens during each
// event loop iteration in GUI mode but if there is no main loop, it may be
// also called directly.
virtual void ProcessPendingEvents();
// check if there are pending events on global pending event list
bool HasPendingEvents() const;
// make sure that idle events are sent again
virtual void WakeUpIdle();
// execute the main GUI loop, the function returns when the loop ends
virtual int MainLoop();
// exit the main GUI loop during the next iteration (i.e. it does not
// stop the program immediately!)
virtual void ExitMainLoop();
// returns true if there are unprocessed events in the event queue
virtual bool Pending();
// process the first event in the event queue (blocks until an event
// appears if there are none currently, use Pending() if this is not
// wanted), returns false if the event loop should stop and true
// otherwise
virtual bool Dispatch();
// this virtual function is called when the application
// becomes idle and normally just sends wxIdleEvent to all interested
// parties
//
// it should return true if more idle events are needed, false if not
virtual bool ProcessIdle();
#if wxUSE_EXCEPTIONS
// Function called if an uncaught exception is caught inside the main
// event loop: it may return true to continue running the event loop or
// false to stop it (in the latter case it may rethrow the exception as
// well)
virtual bool OnExceptionInMainLoop();
#endif // wxUSE_EXCEPTIONS
// Yield-related hooks
// -------------------
// process all currently pending events right now
//
// it is an error to call Yield() recursively unless the value of
// onlyIfNeeded is true
//
// WARNING: this function is dangerous as it can lead to unexpected
// reentrancies (i.e. when called from an event handler it
// may result in calling the same event handler again), use
// with _extreme_ care or, better, don't use at all!
// NOTE: in wxConsoleBase it doesn't do anything, just a hook for GUI wxApp
bool Yield(bool onlyIfNeeded = false)
{ return DoYield(onlyIfNeeded, wxEVT_CATEGORY_ALL); }
bool YieldFor(long eventsToProcess)
{ return DoYield(true, eventsToProcess); }
virtual bool IsYielding() const
{ return false; }
virtual bool IsEventAllowedInsideYield(wxEventCategory WXUNUSED(cat)) const
{ return true; }
// no SafeYield hooks since it uses wxWindow which is not available when wxUSE_GUI=0
// wxEventLoop redirections
// ------------------------
virtual void SuspendProcessingOfPendingEvents();
virtual void ResumeProcessingOfPendingEvents();
virtual void ProcessPendingEvents();
bool HasPendingEvents() const;
virtual bool Pending();
virtual bool Dispatch();
virtual int MainLoop();
virtual void ExitMainLoop();
bool Yield(bool onlyIfNeeded = false);
virtual void WakeUpIdle();
virtual bool ProcessIdle();
// debugging support
@@ -395,10 +346,6 @@ protected:
// for the first time
virtual wxAppTraits *CreateTraits();
// the real yield function hook:
virtual bool DoYield(bool WXUNUSED(onlyIfNeeded), long WXUNUSED(eventsToProcess))
{ return true; }
// function used for dynamic wxApp creation
static wxAppInitializerFunction ms_appInitFn;
@@ -424,13 +371,6 @@ protected:
// been started yet or has already terminated)
wxEventLoopBase *m_mainLoop;
// the array of the handlers with pending events which needs to be processed
// inside ProcessPendingEvents()
// wxEvtHandlerArray m_handlersWithPendingEvents; FIXME: enable this and remove global lists
// helper array used by ProcessPendingEvents()
// wxEvtHandlerArray m_handlersWithPendingDelayedEvents; FIXME: enable this and remove global lists
friend class WXDLLIMPEXP_FWD_BASE wxEvtHandler;
// the application object is a singleton anyhow, there is no sense in
@@ -496,15 +436,6 @@ public:
virtual bool SafeYield(wxWindow *win, bool onlyIfNeeded);
virtual bool SafeYieldFor(wxWindow *win, long eventsToProcess);
// returns true if the main thread is inside a Yield() call
virtual bool IsYielding() const
{ return m_isInsideYield; }
// returns true if events of the given event category should be immediately
// processed inside a wxApp::Yield() call or rather should be queued for
// later processing by the main event loop
virtual bool IsEventAllowedInsideYield(wxEventCategory cat) const;
// this virtual function is called in the GUI mode when the application
// becomes idle and normally just sends wxIdleEvent to all interested
// parties
@@ -627,10 +558,6 @@ protected:
// does any of our windows have focus?
bool m_isActive;
// Yield() helpers:
bool m_isInsideYield;
long m_eventsToProcessInsideYield;
wxDECLARE_NO_COPY_CLASS(wxAppBase);
};