1/*
2 * Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24package com.sun.hotspot.igv.coordinator.actions;
25
26import com.sun.hotspot.igv.data.InputGraph;
27import com.sun.hotspot.igv.data.services.GraphViewer;
28import com.sun.hotspot.igv.data.services.InputGraphProvider;
29import com.sun.hotspot.igv.difference.Difference;
30import com.sun.hotspot.igv.util.LookupHistory;
31import org.openide.nodes.Node;
32import org.openide.util.Lookup;
33
34/**
35 *
36 * @author Thomas Wuerthinger
37 */
38public class DiffGraphCookie implements Node.Cookie {
39
40    private InputGraph graph;
41
42    public DiffGraphCookie(InputGraph graph) {
43        this.graph = graph;
44    }
45
46    private InputGraph getCurrentGraph() {
47        InputGraphProvider graphProvider = LookupHistory.getLast(InputGraphProvider.class);
48        if (graphProvider != null) {
49            return graphProvider.getGraph();
50        }
51        return null;
52    }
53
54    public boolean isPossible() {
55        return getCurrentGraph() != null;
56    }
57
58    public void openDiff() {
59        InputGraph other = getCurrentGraph();
60        final GraphViewer viewer = Lookup.getDefault().lookup(GraphViewer.class);
61        if (viewer != null) {
62            InputGraph diffGraph = Difference.createDiffGraph(other, graph);
63            viewer.view(diffGraph, true);
64        }
65    }
66}
67