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package com.sun.faces.facelets.tag.jsf;
import com.sun.faces.facelets.el.LegacyMethodBinding;
import javax.el.ExpressionFactory;
import javax.el.MethodExpression;
import javax.faces.component.ActionSource;
import javax.faces.component.ActionSource2;
import javax.faces.event.ActionEvent;
import javax.faces.event.MethodExpressionActionListener;
import javax.faces.view.facelets.*;
/**
*
* @author Jacob Hookom
* @version $Id$
*/
final class ActionSourceRule extends MetaRule {
public final static Class[] ACTION_SIG = new Class[0];
public final static Class[] ACTION_LISTENER_SIG = new Class[] { ActionEvent.class };
public final static Class[] ACTION_LISTENER_ZEROARG_SIG = new Class[] { };
final static class ActionMapper extends Metadata {
private final TagAttribute attr;
public ActionMapper(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((ActionSource) instance).setAction(new LegacyMethodBinding(
this.attr.getMethodExpression(ctx, Object.class,
ActionSourceRule.ACTION_SIG)));
}
}
final static class ActionMapper2 extends Metadata {
private final TagAttribute attr;
public ActionMapper2(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((ActionSource2) instance).setActionExpression(this.attr
.getMethodExpression(ctx, Object.class,
ActionSourceRule.ACTION_SIG));
}
}
final static class ActionListenerMapper extends Metadata {
private final TagAttribute attr;
public ActionListenerMapper(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((ActionSource) instance)
.setActionListener(new LegacyMethodBinding(this.attr
.getMethodExpression(ctx, null,
ActionSourceRule.ACTION_LISTENER_SIG)));
}
}
final static class ActionListenerMapper2 extends Metadata {
private final TagAttribute attr;
public ActionListenerMapper2(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
ExpressionFactory expressionFactory = ctx.getExpressionFactory();
MethodExpression methodExpressionOneArg = attr.getMethodExpression(
ctx, null, ActionSourceRule.ACTION_LISTENER_SIG);
MethodExpression methodExpressionZeroArg =
expressionFactory.createMethodExpression(
ctx, methodExpressionOneArg.getExpressionString(),
Void.class, ActionSourceRule.ACTION_LISTENER_ZEROARG_SIG);
((ActionSource2) instance)
.addActionListener(new MethodExpressionActionListener(
methodExpressionOneArg, methodExpressionZeroArg));
}
}
public final static ActionSourceRule Instance = new ActionSourceRule();
public ActionSourceRule() {
super();
}
public Metadata applyRule(String name, TagAttribute attribute,
MetadataTarget meta) {
if (meta.isTargetInstanceOf(ActionSource.class)) {
if ("action".equals(name)) {
if (meta.isTargetInstanceOf(ActionSource2.class)) {
return new ActionMapper2(attribute);
} else {
return new ActionMapper(attribute);
}
}
if ("actionListener".equals(name)) {
if (meta.isTargetInstanceOf(ActionSource2.class)) {
return new ActionListenerMapper2(attribute);
} else {
return new ActionListenerMapper(attribute);
}
}
}
return null;
}
}