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* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.view.facelets.html;
import java.io.Serializable;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.TagConfig;
import org.richfaces.event.ItemChangeEvent;
import org.richfaces.event.ItemChangeListener;
import org.richfaces.event.ItemChangeSource;
import org.richfaces.view.facelets.EventListenerHandler;
import org.richfaces.view.facelets.TagHandlerUtils;
/**
*
* @author akolonitsky
* @version 1.0
*/
public final class ItemChangeListenerHandler extends EventListenerHandler {
private static class LazyItemChangeListener extends LazyEventListener<ItemChangeListener> implements ItemChangeListener,
Serializable {
private static final long serialVersionUID = 7715606467989165179L;
LazyItemChangeListener(String type, ValueExpression binding) {
super(type, binding);
}
public void processItemChange(ItemChangeEvent event) throws AbortProcessingException {
processEvent(event);
}
}
public ItemChangeListenerHandler(TagConfig config) {
super(config);
}
public void applyAttachedObject(FacesContext context, UIComponent parent) {
ValueExpression valueExpr = null;
if (this.binding != null) {
FaceletContext ctx = (FaceletContext) context.getAttributes().get(TagHandlerUtils.FACELET_CONTEXT_KEY);
valueExpr = this.binding.getValueExpression(ctx, ItemChangeListener.class);
}
ItemChangeSource evh = (ItemChangeSource) parent;
evh.addItemChangeListener(new LazyItemChangeListener(this.listenerType, valueExpr));
}
@Override
public boolean isEventSource(UIComponent comp) {
return comp instanceof ItemChangeSource;
}
}