use Cocoa fix for nested modal loops for system dialogs also

src/osx/carbon/colordlgosx.mm

@@ -140,7 +140,7 @@ int wxColourDialog::ShowModal()
             //
             //	Start the color panel modal loop
             //
-            wxDialog::OSXBeginModalDialog();
+            OSXBeginModalDialog();
             NSModalSession session = [NSApp beginModalSessionForWindow:theColorPanel];
             for (;;)
             {
@@ -151,7 +151,7 @@ int wxColourDialog::ShowModal()
                     break;
             }
             [NSApp endModalSession:session];
-            wxDialog::OSXEndModalDialog();
+            OSXEndModalDialog();
 
     //free up the memory for the delegates - we don't need them anymore
     [theColorPanel setDelegate:nil];

src/osx/carbon/fontdlg.cpp

@@ -86,9 +86,9 @@ int wxFontDialog::ShowModal()
 {
     WX_HOOK_MODAL_DIALOG();
 
-    wxDialog::OSXBeginModalDialog();
+    OSXBeginModalDialog();
     int retval = RunMixedFontDialog(this);
-    wxDialog::OSXEndModalDialog();
+    OSXEndModalDialog();
 
     return retval ;
 }

src/osx/carbon/fontdlgosx.mm

@@ -532,7 +532,7 @@ int wxFontDialog::ShowModal()
     //  the color panel until the color panel closes, switching
     //  back to the font panel modal loop once it does close.
     //
-    wxDialog::OSXBeginModalDialog();
+    OSXBeginModalDialog();
     do
     {
         //
@@ -571,7 +571,7 @@ int wxFontDialog::ShowModal()
         //out of its modal loop because the color panel was
         //opened) return the font panel modal loop
     }while([theFPDelegate isClosed] == NO);
-    wxDialog::OSXEndModalDialog();
+    OSXEndModalDialog();
     
     //free up the memory for the delegates - we don't need them anymore
     [theFPDelegate release];

src/osx/cocoa/dialog.mm

@@ -44,3 +44,29 @@ void wxDialog::EndWindowModal()
     [NSApp endSheet: GetWXWindow()];
     [GetWXWindow() orderOut:GetWXWindow()];
 }
+
+bool wxDialog::OSXGetWorksWhenModal()
+{
+    bool worksWhenModal = false;
+
+    NSWindow* nswindow = IsModal() ? GetWXWindow() : nil;
+    if ( nswindow != nil )
+    {
+        if ( [nswindow isKindOfClass:[NSPanel class]] &&  [(NSPanel*)nswindow worksWhenModal] == YES )
+        {
+            [(NSPanel*)nswindow setWorksWhenModal:NO];
+            worksWhenModal = true;
+        }
+    }
+    return worksWhenModal;
+}
+
+void wxDialog::OSXSetWorksWhenModal(bool worksWhenModal)
+{
+    NSWindow* nswindow = IsModal() ? GetWXWindow() : nil;
+    if ( nswindow != nil )
+    {
+        if ( [nswindow isKindOfClass:[NSPanel class]] &&  [(NSPanel*)nswindow worksWhenModal] == YES )
+            [(NSPanel*)nswindow setWorksWhenModal:worksWhenModal];
+    }
+}

src/osx/cocoa/dirdlg.mm

@@ -116,9 +116,14 @@ int wxDirDialog::ShowModal()
     m_path.clear();
 
     int returnCode = -1;
+    
+    OSXBeginModalDialog();
 
     returnCode = (NSInteger)[oPanel runModalForDirectory:dir.AsNSString() file:nil types:nil];
     ModalFinishedCallback(oPanel, returnCode);
+    
+    OSXEndModalDialog();
+
 
     return GetReturnCode();
 }

src/osx/cocoa/evtloop.mm

@@ -436,26 +436,9 @@ void wxModalEventLoop::OSXDoRun()
 #if OSX_USE_MODAL_SESSION
     if ( m_modalWindow )
     {
-        bool restoreWorksWhenModal = false;
-        wxDialog* const parentDialog = wxDynamicCast(wxGetTopLevelParent(m_modalWindow->GetParent()), wxDialog);
-        NSWindow* parentWindow = parentDialog && parentDialog->IsModal() ? parentDialog->GetWXWindow() : nil;
-        if ( parentWindow != nil )
-        {
-            if ( [parentWindow isKindOfClass:[NSPanel class]] &&  [(NSPanel*)parentWindow worksWhenModal] == YES )
-            {
-                [(NSPanel*)parentWindow setWorksWhenModal:NO];
-                restoreWorksWhenModal = true;
-            }
-        }
- 
         BeginModalSession(m_modalWindow);
         wxCFEventLoop::OSXDoRun();
         EndModalSession();
-        
-        if ( restoreWorksWhenModal )
-        {
-            [(NSPanel*)parentWindow setWorksWhenModal:YES];
-        }
     }
     else
 #endif

src/osx/cocoa/filedlg.mm

@@ -559,6 +559,8 @@ int wxFileDialog::ShowModal()
 
     wxGCC_WARNING_SUPPRESS(deprecated-declarations)
 
+    OSXBeginModalDialog();
+
     if ( HasFlag(wxFD_SAVE) )
     {
         NSSavePanel* sPanel = [NSSavePanel savePanel];
@@ -627,6 +629,9 @@ int wxFileDialog::ShowModal()
             
         ModalFinishedCallback(oPanel, returnCode);
     }
+    
+    OSXEndModalDialog();
+
 
     wxGCC_WARNING_RESTORE(deprecated-declarations)
 

src/osx/cocoa/msgdlg.mm

@@ -168,8 +168,13 @@ int wxMessageDialog::ShowModal()
     {
         NSAlert* alert = (NSAlert*)ConstructNSAlert();
 
+        OSXBeginModalDialog();
+
         int button = -1;
         button = [alert runModal];
+        
+        OSXEndModalDialog();
+
         ModalFinishedCallback(alert, button);
         [alert release];
     }

src/osx/cocoa/printdlg.mm

@@ -72,12 +72,16 @@ int wxMacPrintDialog::ShowModal()
     [dict setValue:[NSNumber numberWithInt:m_printDialogData.GetMinPage()] forKey:@"com_apple_print_PrintSettings_PMFirstPage"];
     [dict setValue:[NSNumber numberWithInt:m_printDialogData.GetMaxPage()] forKey:@"com_apple_print_PrintSettings_PMLastPage"];
 
+    OSXBeginModalDialog();
+
     if ( (NSInteger)[panel runModalWithPrintInfo:printInfo] == NSOKButton )
     {
         result = wxID_OK;
         m_printDialogData.GetPrintData().ConvertFromNative();
         ((wxOSXPrintData*)m_printDialogData.GetPrintData().GetNativeData())->TransferTo( &m_printDialogData );
     }
+    
+    OSXEndModalDialog();
 
     return result;
 }
@@ -93,6 +97,9 @@ int wxMacPageSetupDialog::ShowModal()
 
     NSPageLayout *pageLayout = [NSPageLayout pageLayout];
     NSPrintInfo* printInfo = ((wxOSXCocoaPrintData*)m_pageSetupData.GetPrintData().GetNativeData())->GetNSPrintInfo();
+    
+    OSXBeginModalDialog();
+
     if ( [pageLayout runModalWithPrintInfo:printInfo] == NSOKButton )
     {
         result = wxID_OK;
@@ -100,6 +107,8 @@ int wxMacPageSetupDialog::ShowModal()
         m_pageSetupData.SetPaperSize( m_pageSetupData.GetPrintData().GetPaperSize() );
     }
 
+    OSXEndModalDialog();
+    
     return result;
 }
 

src/osx/dialog_osx.cpp

@@ -23,21 +23,39 @@
 
 #include "wx/osx/private.h"
 
-static int s_openDialogs = 0;
+wxVector<wxDialog*> wxDialog::s_modalStack;
+#if wxOSX_USE_COCOA
+wxVector<bool> wxDialog::s_modalWorksStack;
+#endif
+
 bool wxDialog::OSXHasModalDialogsOpen()
 {
-    return s_openDialogs > 0;
+    return s_modalStack.size() > 0;
 }
 
 void wxDialog::OSXBeginModalDialog()
 {
-    s_openDialogs++;
+#if wxOSX_USE_COCOA
+    // turning off worksWhenModal on 'parent'
+    if ( s_modalStack.size() > 0 )
+        s_modalStack.back()->OSXSetWorksWhenModal(false);
+    s_modalWorksStack.push_back(OSXGetWorksWhenModal());
+#endif
+    
+    s_modalStack.push_back(this);
 }
 
 void wxDialog::OSXEndModalDialog()
 {
-    wxASSERT_MSG( s_openDialogs > 0, "incorrect internal modal dialog count");
-    s_openDialogs--;
+    wxASSERT_MSG( s_modalStack.back() == this, "incorrect internal modal dialog stack");
+    s_modalStack.pop_back();
+#if wxOSX_USE_COCOA
+    s_modalWorksStack.pop_back();
+    
+    // restore worksWhenModal
+    if ( s_modalStack.size() > 0 )
+        s_modalStack.back()->OSXSetWorksWhenModal(s_modalWorksStack.back());
+#endif
 }
 
 void wxDialog::Init()
@@ -146,9 +164,9 @@ int wxDialog::ShowModal()
     wxModalEventLoop modalLoop(this);
     m_eventLoop = &modalLoop;
 
-    wxDialog::OSXBeginModalDialog();
+    OSXBeginModalDialog();
     modalLoop.Run();
-    wxDialog::OSXEndModalDialog();
+    OSXEndModalDialog();
 
     m_eventLoop = NULL;