svx/source/accessibility/AccessibleEmptyEditSource.hxx

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  30
  31 #ifndef _SVX_ACCESSIBLEEMPTYEDITSOURCE_HXX
  32 #define _SVX_ACCESSIBLEEMPTYEDITSOURCE_HXX
  33
  34 #include <svtools/brdcst.hxx>
  35 #include <svtools/lstner.hxx>
  36
  37 #include <memory>
  38 #include <svx/unoedsrc.hxx>
  39
  40 class SdrObject;
  41 class SdrView;
  42 class Window;
  43
  44 namespace accessibility
  45 {
  46     /** Proxy edit source for shapes without text
  47
  48         Extracted from old SvxDummyEditSource
  49      */
  50     class AccessibleEmptyEditSource : public SvxEditSource, public SfxListener, public SfxBroadcaster
  51     {
  52     public:
  53         /** Create proxy edit source for shapes without text
  54
  55             Since the views don't broadcast their dying, make sure that
  56             this object gets destroyed if the view becomes invalid
  57
  58             The window is necessary, since our views can display on multiple windows
  59
  60             Make sure you only create such an object if the shape _really_
  61             does not contain text.
  62         */
  63         AccessibleEmptyEditSource(      SdrObject& rObj, SdrView& rView, const Window& rViewWindow );
  64         ~AccessibleEmptyEditSource();
  65
  66         // from the SvxEditSource interface
  67         SvxTextForwarder*               GetTextForwarder();
  68         SvxViewForwarder*               GetViewForwarder();
  69
  70         SvxEditSource*                  Clone() const;
  71
  72         // this method internally switches from empty to proxy mode,
  73         // creating an SvxTextEditSource for the functionality.
  74         SvxEditViewForwarder*   GetEditViewForwarder( sal_Bool bCreate = sal_False );
  75
  76         void                                    UpdateData();
  77         SfxBroadcaster&                 GetBroadcaster() const;
  78
  79         // from the SfxListener interface
  80         void                                    Notify( SfxBroadcaster& rBC, const SfxHint& rHint );
  81
  82     private:
  83         void Switch2ProxyEditSource();
  84
  85         /** Pointer to edit source implementation. This is switched on
  86             a GetEditViewForwarder( true ) call, to actually create a
  87             SvxTextEditSource.
  88
  89             @dyn
  90          */
  91         std::auto_ptr< SvxEditSource >  mpEditSource;
  92
  93         SdrObject&                                              mrObj;
  94         SdrView&                                                mrView;
  95         const Window&                                   mrViewWindow;
  96
  97         bool                                                    mbEditSourceEmpty;
  98     };
  99
 100 } // namespace accessibility
 101
 102 #endif
 103