org.eclipse.tracecompass.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/filter/FilterDragSourceAdapter.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013 Kalray
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Xavier Raynaud - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.ui.views.filter;
  14
  15 import org.eclipse.jface.util.LocalSelectionTransfer;
  16 import org.eclipse.jface.viewers.ISelection;
  17 import org.eclipse.jface.viewers.IStructuredSelection;
  18 import org.eclipse.linuxtools.tmf.core.filter.model.ITmfFilterTreeNode;
  19 import org.eclipse.swt.dnd.DND;
  20 import org.eclipse.swt.dnd.DragSourceAdapter;
  21 import org.eclipse.swt.dnd.DragSourceEvent;
  22
  23 /**
  24  * DragSourceListener for filter view
  25  * @author Xavier Raynaud <xavier.raynaud@kalray.eu>
  26  */
  27 class FilterDragSourceAdapter extends DragSourceAdapter {
  28
  29     private FilterViewer fViewer;
  30
  31     /**
  32      * Constructor
  33      *
  34      * @param viewer
  35      *            the content of the FilterView
  36      */
  37     public FilterDragSourceAdapter(FilterViewer viewer) {
  38         super();
  39         this.fViewer = viewer;
  40     }
  41
  42     @Override
  43     public void dragStart(DragSourceEvent event) {
  44         ISelection s = fViewer.getTreeViewer().getSelection();
  45         LocalSelectionTransfer.getTransfer().setSelection(s);
  46         LocalSelectionTransfer.getTransfer().setSelectionSetTime(event.time & 0xFFFFFFFFL);
  47     }
  48
  49     @Override
  50     public void dragSetData(DragSourceEvent event) {
  51         event.data = LocalSelectionTransfer.getTransfer().getSelection();
  52     }
  53
  54     @Override
  55     public void dragFinished(DragSourceEvent event) {
  56         if (event.detail == DND.DROP_MOVE) {
  57             IStructuredSelection selection = (IStructuredSelection) LocalSelectionTransfer.getTransfer().getSelection();
  58             for (Object data : selection.toList()) {
  59                 if (data instanceof ITmfFilterTreeNode) {
  60                     ITmfFilterTreeNode e = (ITmfFilterTreeNode) data;
  61                     e.remove();
  62                     fViewer.refresh();
  63                 }
  64             }
  65         }
  66         LocalSelectionTransfer.getTransfer().setSelection(null);
  67         LocalSelectionTransfer.getTransfer().setSelectionSetTime(0);
  68     }
  69
  70 }