/* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.activiti.explorer.ui.util;
import org.activiti.explorer.ui.mainlayout.ExplorerLayout;
import com.vaadin.event.MouseEvents.ClickListener;
import com.vaadin.terminal.Resource;
import com.vaadin.terminal.ThemeResource;
import com.vaadin.ui.Component;
import com.vaadin.ui.Embedded;
import com.vaadin.ui.Table;
import com.vaadin.ui.Table.ColumnGenerator;
/**
* A {@link ColumnGenerator} that always returns the same component to render,
* which is an {@link Embeddable} containing the theme image passed in the constructor.
*
* @author Frederik Heremans
* @author Joram Barrez
*/
public class ThemeImageColumnGenerator implements ColumnGenerator {
private static final long serialVersionUID = -7742412844347541389L;
protected Resource image;
protected ClickListener clickListener;
public ThemeImageColumnGenerator(String imageName) {
image = new ThemeResource(imageName);
}
public ThemeImageColumnGenerator(Resource image) {
this.image = image;
}
public ThemeImageColumnGenerator(Resource image, ClickListener clickListener) {
this(image);
this.clickListener = clickListener;
}
public Component generateCell(Table source, Object itemId, Object columnId) {
Embedded embedded = new Embedded(null, image);
if (clickListener != null) {
embedded.addStyleName(ExplorerLayout.STYLE_CLICKABLE);
embedded.setData(itemId);
embedded.addListener(clickListener);
}
return embedded;
}
}