Second try to get wxDataViewChoiceByIndex and its name right, hopefully fixes #11970...

[wxWidgets.git] / include / wx / app.h

diff --git a/include/wx/app.h b/include/wx/app.h
index 8a6a135df983d94d3be021f20c48d1b15bd8f7fb..965ffaf723aa26dcb8c7f523d216c08202259a99 100644 (file)
--- a/include/wx/app.h
+++ b/include/wx/app.h
@@ -22,12 +22,12 @@
 #include "wx/cmdargs.h"     // for wxCmdLineArgsArray used by wxApp::argv
 #include "wx/init.h"        // we must declare wxEntry()
 #include "wx/intl.h"        // for wxLayoutDirection
 #include "wx/cmdargs.h"     // for wxCmdLineArgsArray used by wxApp::argv
 #include "wx/init.h"        // we must declare wxEntry()
 #include "wx/intl.h"        // for wxLayoutDirection

+#include "wx/log.h"         // for wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD()

 
 class WXDLLIMPEXP_FWD_BASE wxAppConsole;
 class WXDLLIMPEXP_FWD_BASE wxAppTraits;
 class WXDLLIMPEXP_FWD_BASE wxCmdLineParser;
 class WXDLLIMPEXP_FWD_BASE wxEventLoopBase;
 
 class WXDLLIMPEXP_FWD_BASE wxAppConsole;
 class WXDLLIMPEXP_FWD_BASE wxAppTraits;
 class WXDLLIMPEXP_FWD_BASE wxCmdLineParser;
 class WXDLLIMPEXP_FWD_BASE wxEventLoopBase;

-class WXDLLIMPEXP_FWD_BASE wxLog;

 class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
 
 #if wxUSE_GUI
 class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
 
 #if wxUSE_GUI


@@ -35,6 +35,11 @@ class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
     class WXDLLIMPEXP_FWD_CORE wxWindow;
 #endif
 
     class WXDLLIMPEXP_FWD_CORE wxWindow;
 #endif
 

+// this macro should be used in any main() or equivalent functions defined in wx
+#define wxDISABLE_DEBUG_SUPPORT() \
+    wxDISABLE_ASSERTS_IN_RELEASE_BUILD(); \
+    wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD()
+

 // ----------------------------------------------------------------------------
 // typedefs
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // typedefs
 // ----------------------------------------------------------------------------


@@ -52,6 +57,15 @@ enum
     wxPRINT_POSTSCRIPT = 2
 };
 
     wxPRINT_POSTSCRIPT = 2
 };
 

+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+// use of this list is strongly deprecated, use wxApp ScheduleForDestruction()
+// and IsScheduledForDestruction()  methods instead of this list directly, it
+// is here for compatibility purposes only
+extern WXDLLIMPEXP_DATA_BASE(wxList) wxPendingDelete;
+

 // ----------------------------------------------------------------------------
 // wxAppConsoleBase: wxApp for non-GUI applications
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxAppConsoleBase: wxApp for non-GUI applications
 // ----------------------------------------------------------------------------


@@ -83,17 +97,25 @@ public:
     // class OnInit() to do it.
     virtual bool OnInit();
 
     // class OnInit() to do it.
     virtual bool OnInit();
 

-    // this is here only temporary hopefully (FIXME)
-    virtual bool OnInitGui() { return true; }
-

     // This is the replacement for the normal main(): all program work should
     // be done here. When OnRun() returns, the programs starts shutting down.
     virtual int OnRun();
 
     // This is the replacement for the normal main(): all program work should
     // be done here. When OnRun() returns, the programs starts shutting down.
     virtual int OnRun();
 

+    // This is called by wxEventLoopBase::SetActive(): you should put the code
+    // which needs an active event loop here.
+    // Note that this function is called whenever an event loop is activated;
+    // you may want to use wxEventLoopBase::IsMain() to perform initialization
+    // specific for the app's main event loop.
+    virtual void OnEventLoopEnter(wxEventLoopBase* WXUNUSED(loop)) {}
+

     // This is only called if OnInit() returned true so it's a good place to do
     // any cleanup matching the initializations done there.
     virtual int OnExit();
 
     // This is only called if OnInit() returned true so it's a good place to do
     // any cleanup matching the initializations done there.
     virtual int OnExit();
 

+    // This is called by wxEventLoopBase::OnExit() for each event loop which
+    // is exited.
+    virtual void OnEventLoopExit(wxEventLoopBase* WXUNUSED(loop)) {}
+

     // This is the very last function called on wxApp object before it is
     // destroyed. If you override it (instead of overriding OnExit() as usual)
     // do not forget to call the base class version!
     // This is the very last function called on wxApp object before it is
     // destroyed. If you override it (instead of overriding OnExit() as usual)
     // do not forget to call the base class version!


@@ -119,22 +141,17 @@ public:
     //     be argv[0]
 
         // set/get the application name
     //     be argv[0]
 
         // set/get the application name

-    wxString GetAppName() const
-    {
-        return m_appName.empty() ? m_className : m_appName;
-    }
+    wxString GetAppName() const;

     void SetAppName(const wxString& name) { m_appName = name; }
 
         // set/get the application display name: the display name is the name
         // shown to the user in titles, reports, etc while the app name is
         // used for paths, config, and other places the user doesn't see
         //
     void SetAppName(const wxString& name) { m_appName = name; }
 
         // set/get the application display name: the display name is the name
         // shown to the user in titles, reports, etc while the app name is
         // used for paths, config, and other places the user doesn't see
         //

-        // so the app name could be myapp while display name could be "My App"
-    wxString GetAppDisplayName() const
-    {
-        return m_appDisplayName.empty() ? GetAppName().Capitalize()
-                                        : m_appDisplayName;
-    }
+        // by default the display name is the same as app name or a capitalized
+        // version of the program if app name was not set neither but it's
+        // usually better to set it explicitly to something nicer
+    wxString GetAppDisplayName() const;

 
     void SetAppDisplayName(const wxString& name) { m_appDisplayName = name; }
 
 
     void SetAppDisplayName(const wxString& name) { m_appDisplayName = name; }
 


@@ -209,6 +226,15 @@ public:
     // for it
     static wxAppTraits *GetTraitsIfExists();
 
     // for it
     static wxAppTraits *GetTraitsIfExists();
 

+    // returns the main event loop instance, i.e. the event loop which is started
+    // by OnRun() and which dispatches all events sent from the native toolkit
+    // to the application (except when new event loops are temporarily set-up).
+    // The returned value maybe NULL. Put initialization code which needs a
+    // non-NULL main event loop into OnEventLoopEnter().
+    wxEventLoopBase* GetMainLoop() const
+        { return m_mainLoop; }
+
+

     // event processing functions
     // --------------------------
 
     // event processing functions
     // --------------------------
 


@@ -260,14 +286,70 @@ public:
 #endif // wxUSE_EXCEPTIONS
 
 
 #endif // wxUSE_EXCEPTIONS
 
 

-    // wxEventLoop redirections
-    // ------------------------
+    // pending events
+    // --------------
+
+    // IMPORTANT: all these methods conceptually belong to wxEventLoopBase
+    //            but for many reasons we need to allow queuing of events
+    //            even when there's no event loop (e.g. in wxApp::OnInit);
+    //            this feature is used e.g. to queue events on secondary threads
+    //            or in wxPython to use wx.CallAfter before the GUI is initialized

 
 

-    virtual void SuspendProcessingOfPendingEvents();
-    virtual void ResumeProcessingOfPendingEvents();
+    // process all events in the m_handlersWithPendingEvents 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();
     virtual void ProcessPendingEvents();

+
+    // check if there are pending events on global pending event list

     bool HasPendingEvents() const;
 
     bool HasPendingEvents() const;
 

+    // temporary suspends processing of the pending events
+    void SuspendProcessingOfPendingEvents();
+
+    // resume processing of the pending events previously stopped because of a
+    // call to SuspendProcessingOfPendingEvents()
+    void ResumeProcessingOfPendingEvents();
+
+    // called by ~wxEvtHandler to (eventually) remove the handler from the list of
+    // the handlers with pending events
+    void RemovePendingEventHandler(wxEvtHandler* toRemove);
+
+    // adds an event handler to the list of the handlers with pending events
+    void AppendPendingEventHandler(wxEvtHandler* toAppend);
+
+    // moves the event handler from the list of the handlers with pending events
+    //to the list of the handlers with _delayed_ pending events
+    void DelayPendingEventHandler(wxEvtHandler* toDelay);
+
+    // deletes the current pending events
+    void DeletePendingEvents();
+
+
+    // delayed destruction
+    // -------------------
+
+    // If an object may have pending events for it, it shouldn't be deleted
+    // immediately as this would result in a crash when trying to handle these
+    // events: instead, it should be scheduled for destruction and really
+    // destroyed only after processing all pending events.
+    //
+    // Notice that this is only possible if we have a running event loop,
+    // otherwise the object is just deleted directly by ScheduleForDestruction()
+    // and IsScheduledForDestruction() always returns false.
+
+    // schedule the object for destruction in the near future
+    void ScheduleForDestruction(wxObject *object);
+
+    // return true if the object is scheduled for destruction
+    bool IsScheduledForDestruction(wxObject *object) const;
+
+
+    // wxEventLoop-related methods
+    // ---------------------------
+
+    // all these functions are forwarded to the corresponding methods of the
+    // currently active event loop -- and do nothing if there is none

     virtual bool Pending();
     virtual bool Dispatch();
 
     virtual bool Pending();
     virtual bool Dispatch();
 


@@ -277,13 +359,25 @@ public:
     bool Yield(bool onlyIfNeeded = false);
 
     virtual void WakeUpIdle();
     bool Yield(bool onlyIfNeeded = false);
 
     virtual void WakeUpIdle();

+
+    // this method is called by the active event loop when there are no events
+    // to process
+    //
+    // by default it generates the idle events and if you override it in your
+    // derived class you should call the base class version to ensure that idle
+    // events are still sent out

     virtual bool ProcessIdle();
 
     virtual bool ProcessIdle();
 

+    // this virtual function is overridden in GUI wxApp to always return true
+    // as GUI applications always have an event loop -- but console ones may
+    // have it or not, so it simply returns true if already have an event loop
+    // running but false otherwise
+    virtual bool UsesEventLoop() const;
+

 
     // debugging support
     // -----------------
 
 
     // debugging support
     // -----------------
 

-#ifdef __WXDEBUG__

     // this function is called when an assert failure occurs, the base class
     // version does the normal processing (i.e. shows the usual assert failure
     // dialog box)
     // this function is called when an assert failure occurs, the base class
     // version does the normal processing (i.e. shows the usual assert failure
     // dialog box)


@@ -303,7 +397,6 @@ public:
                           int line,
                           const wxChar *cond,
                           const wxChar *msg);
                           int line,
                           const wxChar *cond,
                           const wxChar *msg);

-#endif // __WXDEBUG__

 
     // check that the wxBuildOptions object (constructed in the application
     // itself, usually the one from IMPLEMENT_APP() macro) matches the build
 
     // check that the wxBuildOptions object (constructed in the application
     // itself, usually the one from IMPLEMENT_APP() macro) matches the build


@@ -342,6 +435,11 @@ public:
 #endif
 
 protected:
 #endif
 
 protected:

+    // delete all objects in wxPendingDelete list
+    //
+    // called from ProcessPendingEvents()
+    void DeletePendingObjects();
+

     // the function which creates the traits object when GetTraits() needs it
     // for the first time
     virtual wxAppTraits *CreateTraits();
     // the function which creates the traits object when GetTraits() needs it
     // for the first time
     virtual wxAppTraits *CreateTraits();


@@ -371,6 +469,27 @@ protected:
     // been started yet or has already terminated)
     wxEventLoopBase *m_mainLoop;
 
     // been started yet or has already terminated)
     wxEventLoopBase *m_mainLoop;
 

+
+    // pending events management vars:
+
+    // the array of the handlers with pending events which needs to be processed
+    // inside ProcessPendingEvents()
+    wxEvtHandlerArray m_handlersWithPendingEvents;
+
+    // helper array used by ProcessPendingEvents() to store the event handlers
+    // which have pending events but of these events none can be processed right now
+    // (because of a call to wxEventLoop::YieldFor() which asked to selectively process
+    // pending events)
+    wxEvtHandlerArray m_handlersWithPendingDelayedEvents;
+
+#if wxUSE_THREADS
+    // this critical section protects both the lists above
+    wxCriticalSection m_handlersWithPendingEventsLocker;
+#endif
+
+    // flag modified by Suspend/ResumeProcessingOfPendingEvents()
+    bool m_bDoPendingEventProcessing;
+

     friend class WXDLLIMPEXP_FWD_BASE wxEvtHandler;
 
     // the application object is a singleton anyhow, there is no sense in
     friend class WXDLLIMPEXP_FWD_BASE wxEvtHandler;
 
     // the application object is a singleton anyhow, there is no sense in


@@ -447,6 +566,9 @@ public:
         // Returns true if more idle time is requested.
     virtual bool SendIdleEvents(wxWindow* win, wxIdleEvent& event);
 
         // Returns true if more idle time is requested.
     virtual bool SendIdleEvents(wxWindow* win, wxIdleEvent& event);
 

+        // override base class version: GUI apps always use an event loop
+    virtual bool UsesEventLoop() const { return true; }
+

 
     // top level window functions
     // --------------------------
 
     // top level window functions
     // --------------------------


@@ -528,9 +650,6 @@ public:
 #endif // WXWIN_COMPATIBILITY_2_6
 
 protected:
 #endif // WXWIN_COMPATIBILITY_2_6
 
 protected:

-    // delete all objects in wxPendingDelete list
-    void DeletePendingObjects();
-

     // override base class method to use GUI traits
     virtual wxAppTraits *CreateTraits();
 
     // override base class method to use GUI traits
     virtual wxAppTraits *CreateTraits();
 


@@ -658,8 +777,13 @@ public:
 // your compiler really, really wants main() to be in your main program (e.g.
 // hello.cpp). Now IMPLEMENT_APP should add this code if required.
 
 // your compiler really, really wants main() to be in your main program (e.g.
 // hello.cpp). Now IMPLEMENT_APP should add this code if required.
 

-#define IMPLEMENT_WXWIN_MAIN_CONSOLE \
-        int main(int argc, char **argv) { return wxEntry(argc, argv); }
+#define IMPLEMENT_WXWIN_MAIN_CONSOLE                                          \
+    int main(int argc, char **argv)                                           \
+    {                                                                         \
+        wxDISABLE_DEBUG_SUPPORT();                                            \
+                                                                              \
+        return wxEntry(argc, argv);                                           \
+    }

 
 // port-specific header could have defined it already in some special way
 #ifndef IMPLEMENT_WXWIN_MAIN
 
 // port-specific header could have defined it already in some special way
 #ifndef IMPLEMENT_WXWIN_MAIN