/**
* Licensed under the Common Development and Distribution License,
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.sun.com/cddl/
*
* 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.jsf;
import javax.faces.component.EditableValueHolder;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.event.MethodExpressionValueChangeListener;
import javax.faces.event.ValueChangeEvent;
import javax.faces.validator.MethodExpressionValidator;
import com.sun.facelets.FaceletContext;
import com.sun.facelets.el.LegacyMethodBinding;
import com.sun.facelets.tag.TagAttribute;
import com.sun.facelets.tag.Metadata;
import com.sun.facelets.tag.MetaRule;
import com.sun.facelets.tag.MetadataTarget;
import com.sun.facelets.util.FacesAPI;
/**
*
* @author Jacob Hookom
* @version $Id: EditableValueHolderRule.java,v 1.2 2005/08/24 04:38:51 jhook Exp $
*/
public final class EditableValueHolderRule extends MetaRule {
final static class LiteralValidatorMetadata extends Metadata {
private final String validatorId;
public LiteralValidatorMetadata(String validatorId) {
this.validatorId = validatorId;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((EditableValueHolder) instance).addValidator(ctx.getFacesContext()
.getApplication().createValidator(this.validatorId));
}
}
final static class ValueChangedExpressionMetadata extends Metadata {
private final TagAttribute attr;
public ValueChangedExpressionMetadata(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((EditableValueHolder) instance)
.addValueChangeListener(new MethodExpressionValueChangeListener(
this.attr.getMethodExpression(ctx, null,
VALUECHANGE_SIG)));
}
}
final static class ValueChangedBindingMetadata extends Metadata {
private final TagAttribute attr;
public ValueChangedBindingMetadata(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((EditableValueHolder) instance)
.setValueChangeListener(new LegacyMethodBinding(this.attr
.getMethodExpression(ctx, null, VALUECHANGE_SIG)));
}
}
final static class ValidatorExpressionMetadata extends Metadata {
private final TagAttribute attr;
public ValidatorExpressionMetadata(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((EditableValueHolder) instance)
.addValidator(new MethodExpressionValidator(this.attr
.getMethodExpression(ctx, null, VALIDATOR_SIG)));
}
}
final static class ValidatorBindingMetadata extends Metadata {
private final TagAttribute attr;
public ValidatorBindingMetadata(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((EditableValueHolder) instance)
.setValidator(new LegacyMethodBinding(this.attr
.getMethodExpression(ctx, null, VALIDATOR_SIG)));
}
}
private final static Class[] VALIDATOR_SIG = new Class[] {
FacesContext.class, UIComponent.class, Object.class };
private final static Class[] VALUECHANGE_SIG = new Class[] { ValueChangeEvent.class };
public final static EditableValueHolderRule Instance = new EditableValueHolderRule();
public Metadata applyRule(String name, TagAttribute attribute,
MetadataTarget meta) {
if (meta.isTargetInstanceOf(EditableValueHolder.class)) {
boolean elSupport = FacesAPI.getComponentVersion(meta
.getTargetClass()) >= 12;
if ("validator".equals(name)) {
if (attribute.isLiteral()) {
return new LiteralValidatorMetadata(attribute.getValue());
} else if (elSupport) {
return new ValidatorExpressionMetadata(attribute);
} else {
return new ValidatorBindingMetadata(attribute);
}
}
if ("valueChangeListener".equals(name)) {
if (elSupport) {
return new ValueChangedExpressionMetadata(attribute);
} else {
return new ValueChangedBindingMetadata(attribute);
}
}
}
return null;
}
}