ViewOptionsPanelController.java revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 2008, 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.settings;
25
26import java.beans.PropertyChangeListener;
27import java.beans.PropertyChangeSupport;
28import javax.swing.JComponent;
29import org.netbeans.spi.options.OptionsPanelController;
30import org.openide.util.HelpCtx;
31import org.openide.util.Lookup;
32
33/**
34 *
35 * @author Thomas Wuerthinger
36 */
37final class ViewOptionsPanelController extends OptionsPanelController {
38
39    private ViewPanel panel;
40    private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);
41    private boolean changed;
42
43    public void update() {
44        getPanel().load();
45        changed = false;
46    }
47
48    public void applyChanges() {
49        getPanel().store();
50        changed = false;
51    }
52
53    public void cancel() {
54    // need not do anything special, if no changes have been persisted yet
55    }
56
57    public boolean isValid() {
58        return getPanel().valid();
59    }
60
61    public boolean isChanged() {
62        return changed;
63    }
64
65    public HelpCtx getHelpCtx() {
66        return null; // new HelpCtx("...ID") if you have a help set
67    }
68
69    public JComponent getComponent(Lookup masterLookup) {
70        return getPanel();
71    }
72
73    public void addPropertyChangeListener(PropertyChangeListener l) {
74        pcs.addPropertyChangeListener(l);
75    }
76
77    public void removePropertyChangeListener(PropertyChangeListener l) {
78        pcs.removePropertyChangeListener(l);
79    }
80
81    private ViewPanel getPanel() {
82        if (panel == null) {
83            panel = new ViewPanel(this);
84        }
85        return panel;
86    }
87
88    void changed() {
89        if (!changed) {
90            changed = true;
91            pcs.firePropertyChange(OptionsPanelController.PROP_CHANGED, false, true);
92        }
93        pcs.firePropertyChange(OptionsPanelController.PROP_VALID, null, null);
94    }
95}
96