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.filter;
25
26import com.sun.hotspot.igv.graph.*;
27import java.util.ArrayList;
28import java.util.List;
29
30/**
31 *
32 * @author Thomas Wuerthinger
33 */
34public class RemoveSelfLoopsFilter extends AbstractFilter {
35
36    private String name;
37
38    /** Creates a new instance of RemoveSelfLoops */
39    public RemoveSelfLoopsFilter(String name) {
40        this.name = name;
41    }
42
43    @Override
44    public String getName() {
45        return name;
46    }
47
48    @Override
49    public void apply(Diagram d) {
50
51        for (Figure f : d.getFigures()) {
52
53            for (InputSlot is : f.getInputSlots()) {
54
55                List<Connection> toRemove = new ArrayList<>();
56                for (Connection c : is.getConnections()) {
57
58                    if (c.getOutputSlot().getFigure() == f) {
59                        toRemove.add(c);
60                    }
61                }
62
63                for (Connection c : toRemove) {
64
65                    c.remove();
66
67                    OutputSlot os = c.getOutputSlot();
68                    if (os.getConnections().size() == 0) {
69                        f.removeSlot(os);
70                    }
71
72                    c.getInputSlot().setShortName("O");
73                    c.getInputSlot().setText("Self Loop");
74                }
75            }
76        }
77    }
78}
79