Start on ShowWindowModal for OS X Cocoa. Not working properly as children do not display.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63232 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/dialog.h

@@ -74,7 +74,7 @@ public:
     virtual bool IsModal() const = 0;
     // show the dialog frame-modally (needs a parent), using app-modal
     // dialogs on platforms that don't support it
-    virtual bool ShowWindowModal () ;
+    virtual void ShowWindowModal () ;
     virtual void SendWindowModalDialogEvent ( wxEventType type );
 
     // Modal dialogs have a return code - usually the id of the last

include/wx/osx/dialog.h

@@ -55,6 +55,8 @@ public:
 
     // For now, same as Show(TRUE) but returns return code
     virtual int ShowModal();
+    
+    virtual void ShowWindowModal();
 
     // may be called to terminate the dialog with the given return code
     virtual void EndModal(int retCode);
@@ -69,6 +71,9 @@ protected:
     // mac also takes command-period as cancel
     virtual bool IsEscapeKey(const wxKeyEvent& event);
 
+    // needed for cleanup on the Cocoa side.
+    void EndWindowModal();
+
 private:
     void Init();
 

src/osx/carbon/dialog.cpp

@@ -25,6 +25,20 @@
 
 extern wxList wxModalDialogs;
 
+void wxDialog::EndWindowModal()
+{
+    // Nothing to do for now.
+}
+
+void wxDialog::ShowWindowModal()
+{
+    // If someone wants to add support for this to wxOSX Carbon, here would 
+    // be the place to start: http://trac.wxwidgets.org/ticket/9459
+    // Unfortunately, supporting sheets in Carbon isn't as straightforward
+    // as with Cocoa, so it will probably take some tweaking.
+    wxDialogBase::ShowWindowModal();
+}
+
 void wxDialog::DoShowModal()
 {
     wxCHECK_RET( !IsModal(), wxT("DoShowModal() called twice") );

src/osx/cocoa/dialog.mm

@@ -24,6 +24,29 @@
 
 extern wxList wxModalDialogs;
 
+void wxDialog::ShowWindowModal()
+{   
+    wxTopLevelWindow* parent = static_cast<wxTopLevelWindow*>(wxGetTopLevelParent(GetParent()));
+    
+    wxASSERT_MSG(parent, "ShowWindowModal requires the dialog to have a parent.");
+    
+    NSWindow* parentWindow = parent->GetWXWindow();
+    NSWindow* theWindow = GetWXWindow();
+    
+    wxASSERT_MSG([theWindow styleMask] & NSDocModalWindowMask, "Window must have DocModal mask set.");
+
+    [NSApp beginSheet: theWindow
+            modalForWindow: parentWindow
+            modalDelegate: theWindow
+            didEndSelector: nil
+            contextInfo: nil];
+}
+
+void wxDialog::EndWindowModal()
+{
+    [NSApp endSheet: GetWXWindow()];
+}
+
 void wxDialog::DoShowModal()
 {
     wxCHECK_RET( !IsModal(), wxT("DoShowModal() called twice") );

src/osx/dialog_osx.cpp

@@ -145,5 +145,10 @@ void wxDialog::EndModal(int retCode)
     SetReturnCode(retCode);
     Show(false);
     SetModal(false);
+    if (GetModality() == wxDIALOG_MODALITY_WINDOW_MODAL)
+    {
+        EndWindowModal(); // OS X implementation method for cleanup
+        SendWindowModalDialogEvent ( wxEVT_WINDOW_MODAL_DIALOG_CLOSED  );
+    }
 }