Work around "possibly uninitialized variable" warning in wxFileName.

[wxWidgets.git] / src / gtk / dialog.cpp

diff --git a/src/gtk/dialog.cpp b/src/gtk/dialog.cpp
index 7a4f9e300917bb366ccd89d5e8bf495456d54c8e..bb3fbd15861debc507680e88d388b7060126c23c 100644 (file)
--- a/src/gtk/dialog.cpp
+++ b/src/gtk/dialog.cpp
@@ -18,11 +18,16 @@
 
 #include "wx/evtloop.h"
 
+#include "wx/scopedptr.h"
+
 #include <gtk/gtk.h>
 
 // this is defined in src/gtk/toplevel.cpp
 extern int wxOpenModalDialogsCount;
 
+wxDEFINE_TIED_SCOPED_PTR_TYPE(wxGUIEventLoop)
+
+
 //-----------------------------------------------------------------------------
 // wxDialog
 //-----------------------------------------------------------------------------
@@ -31,6 +36,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
 
 void wxDialog::Init()
 {
+    m_modalLoop = NULL;
     m_returnCode = 0;
     m_modalShowing = false;
     m_themeEnabled = true;
@@ -69,13 +75,21 @@ bool wxDialog::Show( bool show )
     if (show && CanDoLayoutAdaptation())
         DoLayoutAdaptation();
 
-    bool ret = wxWindow::Show( show );
+    bool ret = wxDialogBase::Show(show);
 
-    if (show) InitDialog();
+    if (show)
+        InitDialog();
 
     return ret;
 }
 
+wxDialog::~wxDialog()
+{
+    // if the dialog is modal, this will end its event loop
+    if ( IsModal() )
+        EndModal(wxID_CANCEL);
+}
+
 bool wxDialog::IsModal() const
 {
     return m_modalShowing;
@@ -88,11 +102,7 @@ void wxDialog::SetModal( bool WXUNUSED(flag) )
 
 int wxDialog::ShowModal()
 {
-    if (IsModal())
-    {
-       wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
-       return GetReturnCode();
-    }
+    wxASSERT_MSG( !IsModal(), "ShowModal() can't be called twice" );
 
     // release the mouse if it's currently captured as the window having it
     // will be disabled when this dialog is shown -- but will still keep the
@@ -101,16 +111,11 @@ int wxDialog::ShowModal()
     if ( win )
         win->GTKReleaseMouseAndNotify();
 
-    // use the apps top level window as parent if none given unless explicitly
-    // forbidden
-    if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
+    wxWindow * const parent = GetParentForModalDialog(GetParent());
+    if ( parent )
     {
-        wxWindow * const parent = GetParentForModalDialog();
-        if ( parent && parent != this )
-        {
-            gtk_window_set_transient_for( GTK_WINDOW(m_widget),
-                                          GTK_WINDOW(parent->m_widget) );
-        }
+        gtk_window_set_transient_for( GTK_WINDOW(m_widget),
+                                      GTK_WINDOW(parent->m_widget) );
     }
 
     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
@@ -124,7 +129,11 @@ int wxDialog::ShowModal()
     // NOTE: gtk_window_set_modal internally calls gtk_grab_add() !
     gtk_window_set_modal(GTK_WINDOW(m_widget), TRUE);
 
-    wxGUIEventLoop().Run();
+    // Run modal dialog event loop.
+    {
+        wxGUIEventLoopTiedPtr modal(&m_modalLoop, new wxGUIEventLoop());
+        m_modalLoop->Run();
+    }
 
     gtk_window_set_modal(GTK_WINDOW(m_widget), FALSE);
 
@@ -139,13 +148,16 @@ void wxDialog::EndModal( int retCode )
 
     if (!IsModal())
     {
-        wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
+        wxFAIL_MSG( "either wxDialog:EndModal called twice or ShowModal wasn't called" );
         return;
     }
 
     m_modalShowing = false;
 
-    gtk_main_quit();
+    // Ensure Exit() is only called once. The dialog's event loop may be terminated
+    // externally due to an uncaught exception.
+    if (m_modalLoop && m_modalLoop->IsRunning())
+        m_modalLoop->Exit();
 
     Show( false );
 }