vcl/inc/dndeventdispatcher.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_VCL_INC_DNDEVENTDISPATCHER_HXX
  21 #define INCLUDED_VCL_INC_DNDEVENTDISPATCHER_HXX
  22
  23 #include <com/sun/star/datatransfer/dnd/XDropTargetListener.hpp>
  24 #include <com/sun/star/datatransfer/dnd/XDropTargetDragContext.hpp>
  25
  26 #include <com/sun/star/datatransfer/dnd/XDragGestureListener.hpp>
  27 #include <cppuhelper/implbase.hxx>
  28 #include <vcl/window.hxx>
  29 #include <mutex>
  30
  31 class DNDEventDispatcher final : public ::cppu::WeakImplHelper<
  32     css::datatransfer::dnd::XDropTargetListener,
  33     css::datatransfer::dnd::XDropTargetDragContext,
  34     css::datatransfer::dnd::XDragGestureListener >
  35 {
  36     VclPtr<vcl::Window> m_pTopWindow;
  37
  38     VclPtr<vcl::Window> m_pCurrentWindow;
  39     void designate_currentwindow(vcl::Window *pWindow);
  40     DECL_LINK(WindowEventListener, VclWindowEvent&, void);
  41
  42     std::recursive_mutex m_aMutex;
  43     css::uno::Sequence< css::datatransfer::DataFlavor > m_aDataFlavorList;
  44
  45     vcl::Window* findTopLevelWindow(Point location);
  46     /*
  47      * fire the events on the dnd listener container of the specified window
  48      */
  49
  50     /// @throws css::uno::RuntimeException
  51     static sal_Int32 fireDragEnterEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDropTargetDragContext >& xContext,
  52         const sal_Int8 nDropAction, const Point& rLocation, const sal_Int8 nSourceAction,
  53         const css::uno::Sequence< css::datatransfer::DataFlavor >& aFlavorList );
  54
  55     /// @throws css::uno::RuntimeException
  56     static sal_Int32 fireDragOverEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDropTargetDragContext >& xContext,
  57         const sal_Int8 nDropAction, const Point& rLocation, const sal_Int8 nSourceAction );
  58
  59     /// @throws css::uno::RuntimeException
  60     static sal_Int32 fireDragExitEvent( vcl::Window *pWindow );
  61
  62     /// @throws css::uno::RuntimeException
  63     static sal_Int32 fireDropActionChangedEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDropTargetDragContext >& xContext,
  64         const sal_Int8 nDropAction, const Point& rLocation, const sal_Int8 nSourceAction );
  65
  66     /// @throws css::uno::RuntimeException
  67     static sal_Int32 fireDropEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDropTargetDropContext >& xContext,
  68         const sal_Int8 nDropAction, const Point& rLocation, const sal_Int8 nSourceAction,
  69         const css::uno::Reference< css::datatransfer::XTransferable >& xTransferable );
  70
  71     /// @throws css::uno::RuntimeException
  72     static sal_Int32 fireDragGestureEvent( vcl::Window *pWindow, const css::uno::Reference< css::datatransfer::dnd::XDragSource >& xSource,
  73         const css::uno::Any& event, const Point& rOrigin, const sal_Int8 nDragAction );
  74
  75 public:
  76
  77     DNDEventDispatcher( vcl::Window * pTopWindow );
  78     virtual ~DNDEventDispatcher() override;
  79
  80     /*
  81      * XDropTargetDragContext
  82      */
  83
  84     virtual void SAL_CALL acceptDrag( sal_Int8 dropAction ) override;
  85     virtual void SAL_CALL rejectDrag() override;
  86
  87     /*
  88      * XDropTargetListener
  89      */
  90
  91     virtual void SAL_CALL drop( const css::datatransfer::dnd::DropTargetDropEvent& dtde ) override;
  92     virtual void SAL_CALL dragEnter( const css::datatransfer::dnd::DropTargetDragEnterEvent& dtdee ) override;
  93     virtual void SAL_CALL dragExit( const css::datatransfer::dnd::DropTargetEvent& dte ) override;
  94     virtual void SAL_CALL dragOver( const css::datatransfer::dnd::DropTargetDragEvent& dtde ) override;
  95     virtual void SAL_CALL dropActionChanged( const css::datatransfer::dnd::DropTargetDragEvent& dtde ) override;
  96
  97     /*
  98      * XDragGestureListener
  99      */
 100
 101     virtual void SAL_CALL dragGestureRecognized( const css::datatransfer::dnd::DragGestureEvent& dge ) override;
 102
 103     /*
 104      * XEventListener
 105      */
 106
 107     virtual void SAL_CALL disposing( const css::lang::EventObject& eo ) override;
 108 };
 109
 110 #endif
 111
 112 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */