dndeventdispatcher.hxx

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#ifndef INCLUDED_VCL_INC_DNDEVENTDISPATCHER_HXX
#define INCLUDED_VCL_INC_DNDEVENTDISPATCHER_HXX
 
#include <com/sun/star/datatransfer/dnd/XDropTargetListener.hpp>
#include <com/sun/star/datatransfer/dnd/XDropTargetDragContext.hpp>
 
#include <com/sun/star/datatransfer/dnd/XDragGestureListener.hpp>
#include <cppuhelper/implbase.hxx>
#include <vcl/window.hxx>
#include <mutex>
 
class DNDEventDispatcher final : public ::cppu::WeakImplHelper<
    css::datatransfer::dnd::XDropTargetListener,
    css::datatransfer::dnd::XDropTargetDragContext,
    css::datatransfer::dnd::XDragGestureListener >
{
    VclPtr<vcl::Window> m_pTopWindow;
 
    VclPtr<vcl::Window> m_pCurrentWindow;
    void designate_currentwindow(vcl::Window *pWindow);
    DECL_LINK(WindowEventListener, VclWindowEvent&, void);
 
    std::recursive_mutex m_aMutex;
    css::uno::Sequence< css::datatransfer::DataFlavor > m_aDataFlavorList;
 
    vcl::Window* findTopLevelWindow(Point& location);
    /*
     * fire the events on the dnd listener container of the specified window
     */
 
    static sal_Int32 fireDragEnterEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDropTargetDragContext >& xContext,
        const sal_Int8 nDropAction, const Point& rLocation, const sal_Int8 nSourceAction,
        const css::uno::Sequence< css::datatransfer::DataFlavor >& aFlavorList );
 
    static sal_Int32 fireDragOverEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDropTargetDragContext >& xContext,
        const sal_Int8 nDropAction, const Point& rLocation, const sal_Int8 nSourceAction );
 
    static sal_Int32 fireDragExitEvent( vcl::Window *pWindow );
 
    static sal_Int32 fireDropActionChangedEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDropTargetDragContext >& xContext,
        const sal_Int8 nDropAction, const Point& rLocation, const sal_Int8 nSourceAction );
 
    static sal_Int32 fireDropEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDropTargetDropContext >& xContext,
        const sal_Int8 nDropAction, const Point& rLocation, const sal_Int8 nSourceAction,
        const css::uno::Reference< css::datatransfer::XTransferable >& xTransferable );
 
    static sal_Int32 fireDragGestureEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDragSource >& xSource,
        const css::uno::Any& event, const Point& rOrigin, const sal_Int8 nDragAction );
 
public:
 
    DNDEventDispatcher( vcl::Window * pTopWindow );
    virtual ~DNDEventDispatcher() override;
 
    /*
     * XDropTargetDragContext
     */
 
    virtual void SAL_CALL acceptDrag( sal_Int8 dropAction ) override;
    virtual void SAL_CALL rejectDrag() override;
 
    /*
     * XDropTargetListener
     */
 
    virtual void SAL_CALL drop( const css::datatransfer::dnd::DropTargetDropEvent& dtde ) override;
    virtual void SAL_CALL dragEnter( const css::datatransfer::dnd::DropTargetDragEnterEvent& dtdee ) override;
    virtual void SAL_CALL dragExit( const css::datatransfer::dnd::DropTargetEvent& dte ) override;
    virtual void SAL_CALL dragOver( const css::datatransfer::dnd::DropTargetDragEvent& dtde ) override;
    virtual void SAL_CALL dropActionChanged( const css::datatransfer::dnd::DropTargetDragEvent& dtde ) override;
 
    /*
     * XDragGestureListener
     */
 
    virtual void SAL_CALL dragGestureRecognized( const css::datatransfer::dnd::DragGestureEvent& dge ) override;
 
    /*
     * XEventListener
     */
 
    virtual void SAL_CALL disposing( const css::lang::EventObject& eo ) override;
};
 
#endif
 
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