| /******************************************************************************* |
| * Copyright (c) 2008, 2009 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.db; |
| |
| import java.util.Iterator; |
| import org.eclipse.jpt.core.JpaNode; |
| import org.eclipse.jpt.db.Table; |
| import org.eclipse.jpt.ui.WidgetFactory; |
| import org.eclipse.jpt.ui.internal.widgets.Pane; |
| import org.eclipse.jpt.utility.internal.iterators.EmptyIterator; |
| import org.eclipse.jpt.utility.model.value.PropertyValueModel; |
| import org.eclipse.swt.widgets.Composite; |
| |
| /** |
| * This combo-box displays a table's columns. |
| */ |
| public abstract class ColumnCombo<T extends JpaNode> |
| extends DatabaseObjectCombo<T> |
| { |
| public ColumnCombo(Pane<? extends T> parentPane, Composite parent) { |
| super(parentPane, parent); |
| } |
| |
| public ColumnCombo( |
| Pane<?> parentPane, |
| PropertyValueModel<? extends T> subjectHolder, |
| Composite parent |
| ) { |
| super(parentPane, subjectHolder, parent); |
| } |
| |
| public ColumnCombo( |
| PropertyValueModel<? extends T> subjectHolder, |
| Composite parent, |
| WidgetFactory widgetFactory |
| ) { |
| super(subjectHolder, parent, widgetFactory); |
| } |
| |
| @Override |
| protected Iterator<String> values() { |
| Table dbTable = this.getDbTable(); |
| return (dbTable != null) ? dbTable.sortedColumnIdentifiers() : EmptyIterator.<String>instance(); |
| } |
| |
| protected Table getDbTable() { |
| return (this.getSubject() == null) ? null : this.getDbTable_(); |
| } |
| |
| /** |
| * Assume the subject is not null. |
| */ |
| protected abstract Table getDbTable_(); |
| |
| @Override |
| protected void tableChanged_(Table table) { |
| super.tableChanged_(table); |
| if (this.getDbTable() == table) { |
| this.doPopulate(); |
| } |
| } |
| |
| } |