+// ----------------------------------------------------------------------------
+// headers we have to include here
+// ----------------------------------------------------------------------------
+
+#include "wx/event.h" // for the base class
+#include "wx/build.h"
+#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 wxMessageOutput;
+
+#if wxUSE_GUI
+ struct WXDLLIMPEXP_FWD_CORE wxVideoMode;
+ 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
+// ----------------------------------------------------------------------------
+
+// the type of the function used to create a wxApp object on program start up
+typedef wxAppConsole* (*wxAppInitializerFunction)();
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+enum
+{
+ wxPRINT_WINDOWS = 1,
+ 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
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxAppConsoleBase : public wxEvtHandler
+{
+public:
+ // ctor and dtor
+ wxAppConsoleBase();
+ virtual ~wxAppConsoleBase();
+
+
+ // the virtual functions which may/must be overridden in the derived class
+ // -----------------------------------------------------------------------
+
+ // This is the very first function called for a newly created wxApp object,
+ // it is used by the library to do the global initialization. If, for some
+ // reason, you must override it (instead of just overriding OnInit(), as
+ // usual, for app-specific initializations), do not forget to call the base
+ // class version!
+ virtual bool Initialize(int& argc, wxChar **argv);
+
+ // This gives wxCocoa a chance to call OnInit() with a memory pool in place
+ virtual bool CallOnInit() { return OnInit(); }
+
+ // Called before OnRun(), this is a good place to do initialization -- if
+ // anything fails, return false from here to prevent the program from
+ // continuing. The command line is normally parsed here, call the base
+ // class OnInit() to do it.
+ virtual bool OnInit();
+
+ // 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 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!
+ virtual void CleanUp();
+
+ // Called when a fatal exception occurs, this function should take care not
+ // to do anything which might provoke a nested exception! It may be
+ // overridden if you wish to react somehow in non-default way (core dump
+ // under Unix, application crash under Windows) to fatal program errors,
+ // however extreme care should be taken if you don't want this function to
+ // crash.
+ virtual void OnFatalException() { }
+
+ // Called from wxExit() function, should terminate the application a.s.a.p.
+ virtual void Exit();
+
+
+ // application info: name, description, vendor
+ // -------------------------------------------
+
+ // NB: all these should be set by the application itself, there are no
+ // reasonable default except for the application name which is taken to
+ // be argv[0]
+
+ // set/get the application name
+ 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
+ //
+ // 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; }
+
+ // set/get the app class name
+ wxString GetClassName() const { return m_className; }
+ void SetClassName(const wxString& name) { m_className = name; }
+
+ // set/get the vendor name
+ const wxString& GetVendorName() const { return m_vendorName; }
+ void SetVendorName(const wxString& name) { m_vendorName = name; }
+
+ // set/get the vendor display name: the display name is shown
+ // in titles/reports/dialogs to the user, while the vendor name
+ // is used in some areas such as wxConfig, wxStandardPaths, etc
+ const wxString& GetVendorDisplayName() const
+ {
+ return m_vendorDisplayName.empty() ? GetVendorName()
+ : m_vendorDisplayName;
+ }
+ void SetVendorDisplayName(const wxString& name)
+ {
+ m_vendorDisplayName = name;
+ }
+
+
+ // cmd line parsing stuff
+ // ----------------------
+
+ // all of these methods may be overridden in the derived class to
+ // customize the command line parsing (by default only a few standard
+ // options are handled)
+ //
+ // you also need to call wxApp::OnInit() from YourApp::OnInit() for all
+ // this to work
+
+#if wxUSE_CMDLINE_PARSER
+ // this one is called from OnInit() to add all supported options
+ // to the given parser (don't forget to call the base class version if you
+ // override it!)
+ virtual void OnInitCmdLine(wxCmdLineParser& parser);
+
+ // called after successfully parsing the command line, return true
+ // to continue and false to exit (don't forget to call the base class
+ // version if you override it!)
+ virtual bool OnCmdLineParsed(wxCmdLineParser& parser);
+
+ // called if "--help" option was specified, return true to continue
+ // and false to exit
+ virtual bool OnCmdLineHelp(wxCmdLineParser& parser);
+
+ // called if incorrect command line options were given, return
+ // false to abort and true to continue
+ virtual bool OnCmdLineError(wxCmdLineParser& parser);
+#endif // wxUSE_CMDLINE_PARSER
+
+
+ // miscellaneous customization functions
+ // -------------------------------------
+
+ // create the app traits object to which we delegate for everything which
+ // either should be configurable by the user (then he can change the
+ // default behaviour simply by overriding CreateTraits() and returning his
+ // own traits object) or which is GUI/console dependent as then wxAppTraits
+ // allows us to abstract the differences behind the common facade
+ wxAppTraits *GetTraits();
+
+ // this function provides safer access to traits object than
+ // wxTheApp->GetTraits() during startup or termination when the global
+ // application object itself may be unavailable
+ //
+ // of course, it still returns NULL in this case and the caller must check
+ // 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
+ // --------------------------
+
+ // this method allows to filter all the events processed by the program, so
+ // you should try to return quickly from it to avoid slowing down the
+ // program to the crawl
+ //
+ // return value should be -1 to continue with the normal event processing,
+ // or TRUE or FALSE to stop further processing and pretend that the event
+ // 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
+ //
+ // this is a generalization of HandleEvent() below and the base class
+ // implementation of CallEventHandler() still calls HandleEvent() for
+ // compatibility for functors which are just wxEventFunctions (i.e. methods
+ // of wxEvtHandler)
+ virtual void CallEventHandler(wxEvtHandler *handler,
+ wxEventFunctor& functor,
+ wxEvent& event) const;
+
+ // call the specified handler on the given object with the given event
+ //
+ // this method only exists to allow catching the exceptions thrown by any
+ // event handler, it would lead to an extra (useless) virtual function call
+ // if the exceptions were not used, so it doesn't even exist in that case
+ virtual void HandleEvent(wxEvtHandler *handler,
+ wxEventFunction func,
+ wxEvent& event) const;
+
+ // Called when an unhandled C++ exception occurs inside OnRun(): note that
+ // the main event loop has already terminated by now and the program will
+ // exit, if you need to really handle the exceptions you need to override
+ // OnExceptionInMainLoop()
+ virtual void OnUnhandledException();
+
+ // 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
+
+
+ // 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
+
+ // 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();
+
+ // check if there are pending events on global pending event list
+ 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 int MainLoop();
+ virtual void ExitMainLoop();
+
+ 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();
+
+ // 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
+ // -----------------
+
+ // 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)
+ //
+ // the arguments are the location of the failed assert (func may be empty
+ // if the compiler doesn't support C99 __FUNCTION__), the text of the
+ // assert itself and the user-specified message
+ virtual void OnAssertFailure(const wxChar *file,
+ int line,
+ const wxChar *func,
+ const wxChar *cond,
+ const wxChar *msg);
+
+ // old version of the function without func parameter, for compatibility
+ // only, override OnAssertFailure() in the new code
+ virtual void OnAssert(const wxChar *file,
+ int line,
+ const wxChar *cond,
+ const wxChar *msg);
+
+ // check that the wxBuildOptions object (constructed in the application
+ // itself, usually the one from IMPLEMENT_APP() macro) matches the build
+ // options of the library and abort if it doesn't
+ static bool CheckBuildOptions(const char *optionsSignature,
+ const char *componentName);
+
+ // implementation only from now on
+ // -------------------------------
+
+ // helpers for dynamic wxApp construction
+ static void SetInitializerFunction(wxAppInitializerFunction fn)
+ { ms_appInitFn = fn; }
+ static wxAppInitializerFunction GetInitializerFunction()
+ { return ms_appInitFn; }
+
+ // accessors for ms_appInstance field (external code might wish to modify
+ // it, this is why we provide a setter here as well, but you should really
+ // know what you're doing if you call it), wxTheApp is usually used instead
+ // of GetInstance()
+ static wxAppConsole *GetInstance() { return ms_appInstance; }
+ static void SetInstance(wxAppConsole *app) { ms_appInstance = app; }
+
+
+ // command line arguments (public for backwards compatibility)
+ int argc;
+
+ // this object is implicitly convertible to either "char**" (traditional
+ // type of argv parameter of main()) or to "wchar_t **" (for compatibility
+ // with Unicode build in previous wx versions and because the command line
+ // can, in pr
+#if wxUSE_UNICODE
+ wxCmdLineArgsArray argv;
+#else
+ char **argv;
projects / wxWidgets.git / blobdiff