offapi/com/sun/star/datatransfer/dnd/XDragSource.idl

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  19
  20 #ifndef __com_sun_star_datatransfer_dnd_XDragSource_idl__
  21 #define __com_sun_star_datatransfer_dnd_XDragSource_idl__
  22
  23 #include <com/sun/star/datatransfer/dnd/InvalidDNDOperationException.idl>
  24 #include <com/sun/star/datatransfer/dnd/DragGestureEvent.idl>
  25 #include <com/sun/star/datatransfer/XTransferable.idl>
  26 #include <com/sun/star/lang/IllegalArgumentException.idl>
  27
  28
  29 module com { module sun { module star { module datatransfer { module dnd {
  30
  31  published interface XDragSourceListener;
  32
  33 /** This interface is implemented by a view or window that supports drag
  34     operations and will be received as part of a DragGestureEvent
  35     through a com::sun::star::datatransfer::dnd::XDragGestureListener::dragGestureRecognized()
  36     callback.
  37
  38     <p>Differently to Java, the association between view and interface is fixed
  39     and can not be changed. Otherwise, the AWT messaging would have to be
  40     implemented for any window supporting Drag and Drop operations, which would
  41     be a real performance issue.</p>
  42 */
  43
  44 published interface XDragSource: com::sun::star::uno::XInterface
  45 {
  46
  47     /** In order to query if drag image support is available.
  48
  49         @returns
  50         A boolean indicating whether or not drag image support is
  51         available on the underlying platform.
  52     */
  53
  54     boolean isDragImageSupported();
  55
  56     /** To get the default cursor for a specified drag action.
  57
  58         @param dragAction
  59         A drag action as specified in DNDConstants.
  60
  61         @returns
  62         The default drag cursor for the specified drag action.
  63         <p>The returned value may be used as parameter for the method
  64         com::sun::star::datatransfer::dnd::XDragSourceContext::setCursor().</p>
  65     */
  66
  67     long getDefaultCursor( [in] byte dragAction )
  68         raises( com::sun::star::lang::IllegalArgumentException );
  69
  70     /** Starts the drag operation.
  71
  72         <p>Note: this call does <em>not</em> block until the drag and drop
  73         operation ends. If the Drag and Drop system is unable to initiate
  74         a drag operation or if the user attempts to start a drag while an
  75         existing drag operation is still executing, the action fails immediately.
  76         This is indicated by calling
  77         com::sun::star::datatransfer::dnd::XDragSourceListener::dragDropEnd()
  78         on the parameter listener with a DragSourceDragEvent showing a failure.</p>
  79
  80         @param trigger
  81         The DragGestureEvent that initiated the drag.
  82
  83         @param sourceActions
  84         The action or actions supported for this transferable as defined
  85         in DNDConstants.
  86
  87         @param cursor
  88         The initial drag cursor id or 0 as default.
  89
  90         @param image
  91         The initial drag image id or 0 as default.
  92
  93         @param trans
  94         The transferable object dragged.
  95
  96         @param listener
  97         The XDragSourceListener.
  98
  99         @see com::sun::star::datatransfer::XTransferable
 100     */
 101
 102     void startDrag(
 103         [in] DragGestureEvent trigger,
 104         [in] byte sourceActions,
 105         [in] long cursor,
 106         [in] long image,
 107         [in] com::sun::star::datatransfer::XTransferable trans,
 108         [in] XDragSourceListener listener );
 109 };
 110
 111
 112 }; }; }; }; };
 113
 114 #endif
 115
 116 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */