/**
* 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 com.sun.facelets.tag.jstl.core;
import com.sun.facelets.tag.TagConfig;
import com.sun.facelets.tag.TagException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.el.ELException;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import com.sun.facelets.FaceletContext;
import com.sun.facelets.FaceletException;
import com.sun.facelets.tag.TagHandler;
/**
* @author Jacob Hookom
* @version $Id: ChooseHandler.java,v 1.3 2008/07/13 19:01:43 rlubke Exp $
*/
public final class ChooseHandler extends TagHandler {
private final ChooseOtherwiseHandler otherwise;
private final ChooseWhenHandler[] when;
public ChooseHandler(TagConfig config) {
super(config);
List whenList = new ArrayList();
Iterator itr = this.findNextByType(ChooseWhenHandler.class);
while (itr.hasNext()) {
whenList.add(itr.next());
}
if (whenList.isEmpty()) {
throw new TagException(this.tag, "Choose Tag must have one or more When Tags");
}
this.when = (ChooseWhenHandler[]) whenList.toArray(new ChooseWhenHandler[whenList.size()]);
itr = this.findNextByType(ChooseOtherwiseHandler.class);
if (itr.hasNext()) {
this.otherwise = (ChooseOtherwiseHandler) itr.next();
} else {
this.otherwise = null;
}
}
public void apply(FaceletContext ctx, UIComponent parent)
throws IOException, FacesException, FaceletException, ELException {
for (int i = 0; i < this.when.length; i++) {
if (this.when[i].isTestTrue(ctx)) {
this.when[i].apply(ctx, parent);
return;
}
}
if (this.otherwise != null) {
this.otherwise.apply(ctx, parent);
}
}
}