| /******************************************************************************* |
| * Copyright (c) 2000, 2013 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * 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 java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jface.util.LocalSelectionTransfer; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.ITreeSelection; |
| import org.eclipse.jface.viewers.TreePath; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.jface.viewers.ViewerDropAdapter; |
| import org.eclipse.swt.dnd.DropTargetEvent; |
| import org.eclipse.swt.dnd.TransferData; |
| import org.eclipse.swt.widgets.Item; |
| import org.eclipse.swt.widgets.TreeItem; |
| |
| /** |
| * BreakpointsDropAdapter |
| */ |
| public class BreakpointsDropAdapter extends ViewerDropAdapter { |
| |
| private Item fTarget = null; |
| private TreePath fPath = null; |
| private BreakpointsView fView; |
| |
| /** |
| * Constructor |
| * @param viewer the backing viewer |
| */ |
| protected BreakpointsDropAdapter(TreeViewer viewer) { |
| super(viewer); |
| setFeedbackEnabled(false); |
| } |
| |
| protected BreakpointsDropAdapter(TreeViewer viewer, BreakpointsView view) { |
| this(viewer); |
| fView = view; |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang.Object) |
| */ |
| @Override |
| public boolean performDrop(Object data) { |
| // This is temporary |
| if (getViewer() instanceof BreakpointsViewer) { |
| return ((BreakpointsViewer)getViewer()).performDrop(fTarget, (IStructuredSelection) LocalSelectionTransfer.getTransfer().getSelection()); |
| } else if (fView != null) { |
| ISelection selection = LocalSelectionTransfer.getTransfer().getSelection(); |
| if (fPath != null && selection instanceof ITreeSelection) { |
| if (selection instanceof ITreeSelection) { |
| return fView.performDrop(fPath, (ITreeSelection) LocalSelectionTransfer.getTransfer().getSelection()); |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.ViewerDropAdapter#determineTarget(org.eclipse.swt.dnd.DropTargetEvent) |
| */ |
| @Override |
| protected Object determineTarget(DropTargetEvent event) { |
| fTarget = (Item) event.item; |
| if (fTarget instanceof TreeItem) { |
| List<Object> list = new ArrayList<>(); |
| TreeItem item = (TreeItem)fTarget; |
| while (item != null) { |
| list.add(item.getData()); |
| item = item.getParentItem(); |
| } |
| fPath = new TreePath(list.toArray()); |
| } else { |
| fPath = null; |
| } |
| return fTarget; |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData) |
| */ |
| @Override |
| public boolean validateDrop(Object target, int operation, TransferData transferType) { |
| // This is temporary |
| if (getViewer() instanceof BreakpointsViewer) { |
| return ((BreakpointsViewer)getViewer()).canDrop(fTarget, (IStructuredSelection) LocalSelectionTransfer.getTransfer().getSelection()); |
| } else { |
| ISelection selection = LocalSelectionTransfer.getTransfer().getSelection(); |
| if (fPath != null && selection instanceof ITreeSelection) { |
| if (selection instanceof ITreeSelection) { |
| return fView.canDrop(fPath, (ITreeSelection) LocalSelectionTransfer.getTransfer().getSelection()); |
| } |
| } |
| } |
| return false; |
| } |
| } |