Allow OS X Cocoa (or any OS X port) to override GetBestSize and provide a native...

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

diff --git a/include/wx/app.h b/include/wx/app.h
index a4478b6977027e836f26acbd2fb16437540836aa..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/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 wxLog;
 class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
 
 #if wxUSE_GUI
@@ -35,6 +35,11 @@ class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
     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
 // ----------------------------------------------------------------------------
@@ -52,6 +57,15 @@ enum
     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
 // ----------------------------------------------------------------------------
@@ -127,22 +141,17 @@ public:
     //     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
         //
-        // 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; }
 
@@ -317,8 +326,27 @@ public:
     void DeletePendingEvents();
 
 
-    // wxEventLoop redirections
-    // ------------------------
+    // 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
@@ -340,6 +368,12 @@ public:
     // 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
     // -----------------
@@ -401,6 +435,11 @@ public:
 #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();
@@ -527,6 +566,9 @@ public:
         // 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
     // --------------------------
@@ -608,9 +650,6 @@ public:
 #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();
 
@@ -738,8 +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.
 
-#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