| /******************************************************************************* |
| * Copyright (c) 2000, 2011 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Patrick Chuong (Texas Instruments) - Improve usability of the breakpoint view (Bug 238956) |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.views.breakpoints; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.jface.util.LocalSelectionTransfer; |
| import org.eclipse.jface.util.TransferDragSourceListener; |
| import org.eclipse.jface.viewers.AbstractTreeViewer; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ITreeSelection; |
| import org.eclipse.jface.viewers.TreePath; |
| import org.eclipse.swt.dnd.DND; |
| import org.eclipse.swt.dnd.DragSourceAdapter; |
| import org.eclipse.swt.dnd.DragSourceEvent; |
| import org.eclipse.swt.dnd.Transfer; |
| import org.eclipse.swt.widgets.Item; |
| |
| /** |
| * A drag adapter for the breakpoints viewer |
| */ |
| public class BreakpointsDragAdapter extends DragSourceAdapter implements TransferDragSourceListener { |
| |
| /** |
| * the associated viewer for the adapter |
| */ |
| private AbstractTreeViewer fViewer; |
| private Item[] fItems = null; |
| |
| private BreakpointsView fView; |
| private TreePath[] fTreePaths = null; |
| |
| /** |
| * Constructor |
| * @param viewer the associated viewer, which acts as the selection provider and therefore <b>must</b> implement <code>ISelectionProvider</code> |
| */ |
| public BreakpointsDragAdapter(BreakpointsViewer viewer) { |
| Assert.isNotNull(viewer); |
| fViewer = viewer; |
| } |
| public BreakpointsDragAdapter(AbstractTreeViewer viewer, BreakpointsView view) { |
| Assert.isNotNull(view); |
| fViewer = viewer; |
| fView = view; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.util.TransferDragSourceListener#getTransfer() |
| */ |
| @Override |
| public Transfer getTransfer() { |
| return LocalSelectionTransfer.getTransfer(); |
| } |
| |
| /* non Java-doc |
| * @see org.eclipse.swt.dnd.DragSourceListener#dragStart |
| */ |
| @Override |
| public void dragStart(DragSourceEvent event) { |
| ISelection selection = fViewer.getSelection(); |
| LocalSelectionTransfer.getTransfer().setSelection(selection); |
| LocalSelectionTransfer.getTransfer().setSelectionSetTime(event.time & 0xFFFFFFFFL); |
| if (fViewer instanceof BreakpointsViewer) { |
| BreakpointsViewer viewer = (BreakpointsViewer)fViewer; |
| fItems = viewer.getSelectedItems(); |
| event.doit = viewer.canDrag(fItems); |
| } else { |
| if (selection instanceof ITreeSelection) { |
| fTreePaths = ((ITreeSelection) selection).getPaths(); |
| } else { |
| fTreePaths = new TreePath[0]; |
| } |
| event.doit = fView.canDrag(fTreePaths); |
| } |
| } |
| |
| /* non Java-doc |
| * @see org.eclipse.swt.dnd.DragSourceListener#dragSetData |
| */ |
| @Override |
| public void dragSetData(DragSourceEvent event) { |
| // For consistency set the data to the selection even though |
| // the selection is provided by the LocalSelectionTransfer |
| // to the drop target adapter. |
| event.data = LocalSelectionTransfer.getTransfer().getSelection(); |
| } |
| |
| /* non Java-doc |
| * @see org.eclipse.swt.dnd.DragSourceListener#dragFinished |
| */ |
| @Override |
| public void dragFinished(DragSourceEvent event) { |
| if (event.detail == DND.DROP_MOVE) { |
| // remove from source on move operation |
| if (fViewer instanceof BreakpointsViewer) { |
| BreakpointsViewer viewer = (BreakpointsViewer)fViewer; |
| viewer.performDrag(fItems); |
| } else { |
| fView.performDrag(fTreePaths); |
| } |
| } |
| fItems = null; |
| LocalSelectionTransfer.getTransfer().setSelection(null); |
| LocalSelectionTransfer.getTransfer().setSelectionSetTime(0); |
| } |
| } |