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 javax.swing.JComponent;
019    
020    import org.springframework.richclient.form.Form;
021    import org.springframework.util.Assert;
022    
023    public abstract class FormBackedPreferencePage extends PreferencePage {
024    
025            private Form form;
026    
027            public FormBackedPreferencePage(String id) {
028                    super(id);
029            }
030    
031        public FormBackedPreferencePage(String id, boolean autoconfigure) {
032            super(id, autoconfigure);
033        }
034    
035        protected final JComponent createContents() {
036                    form = createForm();
037                    Assert.notNull(form,
038                                    "You must set the form before contents are created.");
039    
040                    initPageValidationReporter();
041    
042                    return form.getControl();
043            }
044    
045            protected abstract Form createForm();
046    
047            public Form getForm() {
048                    return form;
049            }
050    
051            protected void initPageValidationReporter() {
052                    form.newSingleLineResultsReporter(this);
053            form.addGuarded(this);
054            }
055    
056            public void onAboutToShow() {
057                    setEnabled(!form.hasErrors());
058            }
059    
060            public void setEnabled(boolean enabled) {
061                    setPageComplete(enabled);
062            }
063    }