/*******************************************************************************
* Copyright (c) 2006, 2008 Soyatec (http://www.soyatec.com) and others.
* 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:
* Soyatec - initial API and implementation
*******************************************************************************/
package org.eclipse.e4.xwt.jface;
import org.eclipse.core.databinding.conversion.IConverter;
import org.eclipse.e4.xwt.IIndexedElement;
import org.eclipse.e4.xwt.XWT;
import org.eclipse.e4.xwt.XWTException;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.widgets.Composite;
public class ComboBoxCellEditor extends org.eclipse.jface.viewers.ComboBoxCellEditor implements IIndexedElement {
protected CellEditorHelper cellEditorHelper;
public ComboBoxCellEditor() {
super();
}
public ComboBoxCellEditor(Composite parent, String[] items, int style) {
super(parent, items, style);
}
public ComboBoxCellEditor(Composite parent, String[] items) {
super(parent, items);
}
@Override
protected void doSetValue(Object value) {
if (value != null) {
Class<?> targetType = getTargetType();
if (targetType != String.class) {
IConverter converter = XWT.findConvertor(targetType, String.class);
if (converter != null) {
value = converter.convert(value);
}
}
String[] items = getItems();
for (int i = 0; i < items.length; i++) {
if (items[i].equals(value)) {
super.doSetValue(i);
return;
}
}
}
super.doSetValue(-1);
}
@Override
protected Object doGetValue() {
Object value = super.doGetValue();
String[] items = getItems();
int selected = (Integer) value;
if (selected < 0) {
return null;
}
String selectedString = items[selected];
Class<?> targetType = getTargetType();
if (targetType != String.class) {
IConverter converter = XWT.findConvertor(String.class, targetType);
if (converter != null) {
return converter.convert(value);
}
}
return selectedString;
}
protected Class<?> getTargetType() {
if (cellEditorHelper != null) {
return cellEditorHelper.getTargetType();
}
return Object.class;
}
public void setIndex(Object parent, int index) {
if (!(parent instanceof TableViewer)) {
throw new XWTException("TableView is expected, not \"" + parent.getClass().getName() + "\"");
}
cellEditorHelper = new CellEditorHelper((TableViewer) parent, index);
}
}