bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/dnd/DNDListener.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 IBM Corporation and others.
   3  *
   4  * This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License 2.0
   6  * which accompanies this distribution, and is available at
   7  * https://www.eclipse.org/legal/epl-2.0/
   8  *
   9  * SPDX-License-Identifier: EPL-2.0
  10  *
  11  * Contributors:
  12  *     IBM Corporation - initial API and implementation
  13  *******************************************************************************/
  14 package org.eclipse.swt.dnd;
  15
  16 import org.eclipse.swt.internal.*;
  17 import org.eclipse.swt.widgets.*;
  18
  19
  20 class DNDListener extends TypedListener {
  21         Widget dndWidget;
  22 /**
  23  * DNDListener constructor comment.
  24  * @param listener org.eclipse.swt.internal.SWTEventListener
  25  */
  26 DNDListener(SWTEventListener listener) {
  27         super(listener);
  28 }
  29 @Override
  30 public void handleEvent (Event e) {
  31         switch (e.type) {
  32                 case DND.DragStart: {
  33                         DragSourceEvent event = new DragSourceEvent((DNDEvent)e);
  34                         DragSourceEffect sourceEffect = ((DragSource) dndWidget).getDragSourceEffect();
  35                         if (sourceEffect != null) {
  36                                 sourceEffect.dragStart (event);
  37                         }
  38                         ((DragSourceListener) eventListener).dragStart (event);
  39                         event.updateEvent((DNDEvent)e);
  40                         break;
  41                 }
  42                 case DND.DragEnd: {
  43                         DragSourceEvent event = new DragSourceEvent((DNDEvent)e);
  44                         DragSourceEffect sourceEffect = ((DragSource) dndWidget).getDragSourceEffect();
  45                         if (sourceEffect != null) {
  46                                 sourceEffect.dragFinished (event);
  47                         }
  48                         ((DragSourceListener) eventListener).dragFinished (event);
  49                         event.updateEvent((DNDEvent)e);
  50                         break;
  51                 }
  52                 case DND.DragSetData: {
  53                         DragSourceEvent event = new DragSourceEvent((DNDEvent)e);
  54                         DragSourceEffect sourceEffect = ((DragSource) dndWidget).getDragSourceEffect();
  55                         if (sourceEffect != null) {
  56                                 sourceEffect.dragSetData (event);
  57                         }
  58                         ((DragSourceListener) eventListener).dragSetData (event);
  59                         event.updateEvent((DNDEvent)e);
  60                         break;
  61                 }
  62                 case DND.DragEnter: {
  63                         DropTargetEvent event = new DropTargetEvent((DNDEvent)e);
  64                         ((DropTargetListener) eventListener).dragEnter (event);
  65                         DropTargetEffect dropEffect = ((DropTarget) dndWidget).getDropTargetEffect();
  66                         if (dropEffect != null) {
  67                                 dropEffect.dragEnter (event);
  68                         }
  69                         event.updateEvent((DNDEvent)e);
  70                         break;
  71                 }
  72                 case DND.DragLeave: {
  73                         DropTargetEvent event = new DropTargetEvent((DNDEvent)e);
  74                         ((DropTargetListener) eventListener).dragLeave (event);
  75                         DropTargetEffect dropEffect = ((DropTarget) dndWidget).getDropTargetEffect();
  76                         if (dropEffect != null) {
  77                                 dropEffect.dragLeave (event);
  78                         }
  79                         event.updateEvent((DNDEvent)e);
  80                         break;
  81                 }
  82                 case DND.DragOver: {
  83                         DropTargetEvent event = new DropTargetEvent((DNDEvent)e);
  84                         ((DropTargetListener) eventListener).dragOver (event);
  85                         DropTargetEffect dropEffect = ((DropTarget) dndWidget).getDropTargetEffect();
  86                         if (dropEffect != null) {
  87                                 dropEffect.dragOver (event);
  88                         }
  89                         event.updateEvent((DNDEvent)e);
  90                         break;
  91                 }
  92                 case DND.Drop: {
  93                         DropTargetEvent event = new DropTargetEvent((DNDEvent)e);
  94                         ((DropTargetListener) eventListener).drop (event);
  95                         DropTargetEffect dropEffect = ((DropTarget) dndWidget).getDropTargetEffect();
  96                         if (dropEffect != null) {
  97                                 dropEffect.drop (event);
  98                         }
  99                         event.updateEvent((DNDEvent)e);
 100                         break;
 101                 }
 102                 case DND.DropAccept: {
 103                         DropTargetEvent event = new DropTargetEvent((DNDEvent)e);
 104                         ((DropTargetListener) eventListener).dropAccept (event);
 105                         DropTargetEffect dropEffect = ((DropTarget) dndWidget).getDropTargetEffect();
 106                         if (dropEffect != null) {
 107                                 dropEffect.dropAccept (event);
 108                         }
 109                         event.updateEvent((DNDEvent)e);
 110                         break;
 111                 }
 112                 case DND.DragOperationChanged: {
 113                         DropTargetEvent event = new DropTargetEvent((DNDEvent)e);
 114                         ((DropTargetListener) eventListener).dragOperationChanged (event);
 115                         DropTargetEffect dropEffect = ((DropTarget) dndWidget).getDropTargetEffect();
 116                         if (dropEffect != null) {
 117                                 dropEffect.dragOperationChanged (event);
 118                         }
 119                         event.updateEvent((DNDEvent)e);
 120                         break;
 121                 }
 122
 123         }
 124 }
 125 }