support for file-type popup, compatible for 10.4+, solves #12429

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66952 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/filedlg.h

@@ -16,6 +16,11 @@
 // wxFileDialog
 //-------------------------------------------------------------------------
 
+// set this system option to 1 in order to always show the filetypes popup in 
+// file open dialogs if possible
+
+#define wxOSX_FILEDIALOG_ALWAYS_SHOW_TYPES wxT("osx.filedlg.always-show-types")
+
 class WXDLLIMPEXP_CORE wxFileDialog: public wxFileDialogBase
 {
 DECLARE_DYNAMIC_CLASS(wxFileDialog)
@@ -45,6 +50,13 @@ public:
 #endif
 
     virtual bool SupportsExtraControl() const;
+    
+    // implementation only
+    
+#if wxOSX_USE_COCOA
+    // returns true if the file can be shown as active
+    bool CheckFile( const wxString& filename );
+#endif
 
 protected:
     // not supported for file dialog, RR
@@ -53,6 +65,20 @@ protected:
                            int WXUNUSED(sizeFlags) = wxSIZE_AUTO) {}
 
     void SetupExtraControls(WXWindow nativeWindow);
+    
+#if wxOSX_USE_COCOA
+    virtual wxWindow* CreateFilterPanel(wxWindow *extracontrol);
+    virtual void OnFilterSelected(wxCommandEvent &event);
+
+    wxArrayString m_filterExtensions;
+    wxArrayString m_filterNames;
+    wxChoice* m_filterChoice;
+    wxWindow* m_filterPanel;
+    bool m_useFileTypeFilter;
+    int m_firstFileTypeFilter;
+    wxArrayString m_currentExtensions;
+    WX_NSObject m_delegate;
+#endif
 };
 
 #endif // _WX_FILEDLG_H_