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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.tag;
import javax.el.MethodExpression;
import javax.faces.event.AjaxBehaviorEvent;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.Metadata;
import javax.faces.view.facelets.MetadataTarget;
import javax.faces.view.facelets.TagAttribute;
import org.ajax4jsf.component.AjaxClientBehavior;
import org.ajax4jsf.component.behavior.AjaxBehavior;
import org.ajax4jsf.component.behavior.MethodExpressionAjaxBehaviorListener;
/**
* @author Anton Belevich
*
*/
public class AjaxBehaviorRule extends BehaviorRule {
public static final Class<?>[] AJAX_BEHAVIOR_LISTENER_SIG = new Class[] { AjaxBehaviorEvent.class };
private static final Class<?>[] AJAX_BEHAVIOR_ZEROARG_SIG = new Class[] {};
public static final AjaxBehaviorRule INSTANCE = new AjaxBehaviorRule();
public static final String EXECUTE = "execute";
public static final String RENDER = "render";
public static final String LISTENER = "listener";
@Override
public Metadata applyRule(String name, TagAttribute attribute, MetadataTarget meta) {
if (meta.isTargetInstanceOf(AjaxBehavior.class)) {
if (!attribute.isLiteral()) {
if (LISTENER.equals(name)) {
return new AjaxBehaviorListenerMapper(attribute);
}
Class<?> type = meta.getPropertyType(name);
if (EXECUTE.equals(name) || RENDER.equals(name)) {
type = Object.class;
}
if (type == null) {
type = Object.class;
}
return new ValueExpressionMetadata(name, type, attribute);
} else if (meta != null && meta.getWriteMethod(name) != null) {
return new LiteralAttributeMetadata(name, attribute.getValue());
}
}
return null;
}
public static final class AjaxBehaviorListenerMapper extends Metadata {
private final TagAttribute attr;
public AjaxBehaviorListenerMapper(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
MethodExpression methodExpressionOneArg = this.attr
.getMethodExpression(ctx, null, AjaxBehaviorRule.AJAX_BEHAVIOR_LISTENER_SIG);
MethodExpression methodExpressionZeroArg = this.attr
.getMethodExpression(ctx, null, AjaxBehaviorRule.AJAX_BEHAVIOR_ZEROARG_SIG);
((AjaxClientBehavior) instance).addAjaxBehaviorListener(new MethodExpressionAjaxBehaviorListener(methodExpressionOneArg, methodExpressionZeroArg));
}
}
}