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