001    /*
002     * Copyright 2002-2004 the original author or authors.
003     * 
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not
005     * use this file except in compliance with the License. You may obtain a copy of
006     * the License at
007     * 
008     * http://www.apache.org/licenses/LICENSE-2.0
009     * 
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
012     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
013     * License for the specific language governing permissions and limitations under
014     * the License.
015     */
016    package org.springframework.richclient.preference;
017    
018    import java.io.IOException;
019    import java.util.ArrayList;
020    import java.util.Iterator;
021    import java.util.List;
022    
023    import org.springframework.richclient.dialog.TitledPageApplicationDialog;
024    import org.springframework.richclient.dialog.TreeCompositeDialogPage;
025    import org.springframework.richclient.settings.Settings;
026    import org.springframework.util.Assert;
027    
028    public class PreferenceDialog extends TitledPageApplicationDialog {
029    
030            private List preferencePages = new ArrayList();
031    
032            private Settings settings;
033    
034        public PreferenceDialog() {
035            this("preferenceDialog");
036        }
037    
038        public PreferenceDialog(String dialogId) {
039                    super(new TreeCompositeDialogPage(dialogId));
040            }
041    
042            private void addPage(PreferencePage page) {
043                    Assert.isTrue(!isControlCreated(), "Add pages before control is created.");
044                    preferencePages.add(page);
045                    page.setPreferenceDialog(this);
046            }
047    
048            public void addPreferencePage(PreferencePage page) {
049                    addPage(page);
050                    getPageContainer().addPage(page);
051            }
052    
053            public void addPreferencePage(PreferencePage parent, PreferencePage page) {
054                    addPage(page);
055                    getPageContainer().addPage(parent, page);
056            }
057    
058            private TreeCompositeDialogPage getPageContainer() {
059                    return (TreeCompositeDialogPage) getDialogPage();
060            }
061    
062            public Settings getSettings() {
063                    return settings;
064            }
065    
066            public boolean onFinish() {
067                    for (Iterator iter = preferencePages.iterator(); iter.hasNext();) {
068                            PreferencePage page = (PreferencePage) iter.next();
069                            // give page the chance to veto
070                            if (!page.onFinish()) {
071                                    return false;
072                            }
073                    }
074                    if (settings != null) {
075                            try {
076                                    settings.save();
077                            } catch (IOException e) {
078                                    // TODO handle exception
079                                    e.printStackTrace();
080                                    return false;
081                            }
082                    }
083    
084                    return true;
085            }
086    
087            public void setSettings(Settings settings) {
088                    Assert.notNull(settings, "Settings cannot be null.");
089                    this.settings = settings;
090            }
091    }