| /******************************************************************************* |
| * Copyright (c) 2007, 2008 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0, which accompanies this distribution |
| * and is available at http://www.eclipse.org/legal/epl-v10.html. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.ui.internal.mappings.details; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import org.eclipse.jpt.core.context.NonOwningMapping; |
| import org.eclipse.jpt.core.context.RelationshipMapping; |
| import org.eclipse.jpt.ui.WidgetFactory; |
| import org.eclipse.jpt.ui.internal.JpaHelpContextIds; |
| import org.eclipse.jpt.ui.internal.mappings.JptUiMappingsMessages; |
| import org.eclipse.jpt.ui.internal.util.SWTUtil; |
| import org.eclipse.jpt.ui.internal.widgets.FormPane; |
| import org.eclipse.jpt.utility.internal.CollectionTools; |
| import org.eclipse.jpt.utility.internal.StringTools; |
| import org.eclipse.jpt.utility.model.value.PropertyValueModel; |
| import org.eclipse.swt.custom.CCombo; |
| import org.eclipse.swt.events.ModifyEvent; |
| import org.eclipse.swt.events.ModifyListener; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.widgets.Composite; |
| |
| /** |
| * Here the layout of this pane: |
| * <pre> |
| * ----------------------------------------------------------------------------- |
| * | -------------------------------------------------------------- | |
| * | Mapped By: | |v| | |
| * | -------------------------------------------------------------- | |
| * -----------------------------------------------------------------------------</pre> |
| * |
| * @see NonOwningMapping |
| * @see ManyToManyMappingComposite - A container of this pane |
| * @see OneToManyMappingComposite - A container of this pane |
| * @see OneToOneMappingComposite - A container of this pane |
| * |
| * @version 2.0 |
| * @since 1.0 |
| */ |
| @SuppressWarnings("nls") |
| public class MappedByComposite extends FormPane<NonOwningMapping> |
| { |
| private CCombo combo; |
| |
| /** |
| * Creates a new <code>MappedByComposite</code>. |
| * |
| * @param parentPane The parent container of this one |
| * @param parent The parent container |
| */ |
| public MappedByComposite(FormPane<? extends NonOwningMapping> parentPane, |
| Composite parent) { |
| |
| super(parentPane, parent); |
| } |
| |
| /** |
| * Creates a new <code>MappedByComposite</code>. |
| * |
| * @param subjectHolder The holder of the subject <code>INonOwningMapping</code> |
| * @param parent The parent container |
| * @param widgetFactory The factory used to create various common widgets |
| */ |
| public MappedByComposite(PropertyValueModel<? extends NonOwningMapping> subjectHolder, |
| Composite parent, |
| WidgetFactory widgetFactory) { |
| |
| super(subjectHolder, parent, widgetFactory); |
| } |
| |
| /* |
| * (non-Javadoc) |
| */ |
| @Override |
| protected void addPropertyNames(Collection<String> propertyNames) { |
| super.addPropertyNames(propertyNames); |
| |
| propertyNames.add(RelationshipMapping.RESOLVED_TARGET_ENTITY_PROPERTY); |
| |
| propertyNames.add(NonOwningMapping.MAPPED_BY_PROPERTY); |
| } |
| |
| private ModifyListener buildComboModifyListener() { |
| return new ModifyListener() { |
| public void modifyText(ModifyEvent e) { |
| if (!isPopulating()) { |
| CCombo combo = (CCombo) e.widget; |
| if (combo.getData("populating") != Boolean.TRUE) {//check !TRUE because null is a possibility as well |
| valueChanged(combo.getText()); |
| } |
| } |
| } |
| }; |
| } |
| |
| /* |
| * (non-Javadoc) |
| */ |
| @Override |
| protected void doPopulate() { |
| |
| super.doPopulate(); |
| populateCombo(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| */ |
| @Override |
| protected void initializeLayout(Composite container) { |
| |
| combo = addLabeledEditableCCombo( |
| container, |
| JptUiMappingsMessages.NonOwningMapping_mappedByLabel, |
| buildComboModifyListener(), |
| JpaHelpContextIds.MAPPING_MAPPED_BY |
| ); |
| |
| SWTUtil.attachDefaultValueHandler(combo); |
| } |
| |
| private void populateCombo() { |
| |
| combo.removeAll(); |
| combo.add(JptUiMappingsMessages.NoneSelected); |
| |
| NonOwningMapping subject = getSubject(); |
| |
| if (subject != null) { |
| Iterator<String> iter = subject.candidateMappedByAttributeNames(); |
| |
| for (iter = CollectionTools.sort(iter); iter.hasNext(); ) { |
| combo.add(iter.next()); |
| } |
| } |
| |
| updateSelectedItem(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| */ |
| @Override |
| protected void propertyChanged(String propertyName) { |
| super.propertyChanged(propertyName); |
| |
| if (propertyName == NonOwningMapping.MAPPED_BY_PROPERTY || |
| propertyName == RelationshipMapping.RESOLVED_TARGET_ENTITY_PROPERTY) { |
| |
| populateCombo(); |
| } |
| } |
| |
| /** |
| * Updates the selected item by selected the current value, if not |
| * <code>null</code>, or select the default value if one is available, |
| * otherwise remove the selection. |
| * <p> |
| * <b>Note:</b> It seems the text can be shown as truncated, changing the |
| * selection to (0, 0) makes the entire text visible. |
| */ |
| private void updateSelectedItem() { |
| |
| NonOwningMapping subject = getSubject(); |
| String value = (subject != null) ? subject.getMappedBy() : null; |
| |
| if (value != null) { |
| combo.setText(value); |
| } |
| else { |
| combo.select(0); |
| } |
| |
| combo.setSelection(new Point(0, 0)); |
| } |
| |
| private void valueChanged(String value) { |
| |
| NonOwningMapping subject = getSubject(); |
| String oldValue = (subject != null) ? subject.getMappedBy() : null; |
| |
| // Check for null value |
| if (StringTools.stringIsEmpty(value)) { |
| value = null; |
| |
| if (StringTools.stringIsEmpty(oldValue)) { |
| return; |
| } |
| } |
| |
| // The default value |
| if (JptUiMappingsMessages.NoneSelected.equals(value)) { |
| value = null; |
| } |
| |
| // Nothing to change |
| if ((oldValue == value) && value == null) { |
| return; |
| } |
| |
| // Set the new value |
| if ((value != null) && (oldValue == null) || |
| ((oldValue != null) && !oldValue.equals(value))) { |
| |
| setPopulating(true); |
| |
| try { |
| subject.setMappedBy(value); |
| } |
| finally { |
| setPopulating(false); |
| } |
| } |
| } |
| } |