/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.myfaces.view.facelets.tag.ui;
import java.io.IOException;
import javax.el.ELException;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.FaceletException;
import javax.faces.view.facelets.TagAttribute;
import javax.faces.view.facelets.TagConfig;
import javax.faces.view.facelets.TagHandler;
import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFFaceletAttribute;
import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFFaceletTag;
import org.apache.myfaces.util.ExternalSpecifications;
import org.apache.myfaces.view.facelets.AbstractFaceletContext;
import org.apache.myfaces.view.facelets.ELExpressionCacheMode;
import org.apache.myfaces.view.facelets.el.FaceletStateValueExpression;
import org.apache.myfaces.view.facelets.el.FaceletStateValueExpressionUEL;
import org.apache.myfaces.view.facelets.tag.jsf.ComponentSupport;
import org.apache.myfaces.view.facelets.tag.jsf.FaceletState;
/**
* @author Jacob Hookom
* @version $Id: ParamHandler.java 1544852 2013-11-23 18:09:50Z lu4242 $
*/
@JSFFaceletTag(name="ui:param")
public class ParamHandler extends TagHandler
{
/**
* The name of the variable to pass to the included Facelet.
*/
@JSFFaceletAttribute(
className="javax.el.ValueExpression",
deferredValueType="java.lang.String",
required=true)
private final TagAttribute name;
/**
* The literal or EL expression value to assign to the named variable.
*/
@JSFFaceletAttribute(
className="javax.el.ValueExpression",
deferredValueType="java.lang.String",
required=true)
private final TagAttribute value;
/**
* @param config
*/
public ParamHandler(TagConfig config)
{
super(config);
this.name = this.getRequiredAttribute("name");
this.value = this.getRequiredAttribute("value");
}
/*
* (non-Javadoc)
*
* @see javax.faces.view.facelets.FaceletHandler#apply(javax.faces.view.facelets.FaceletContext,
* javax.faces.component.UIComponent)
*/
public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException, FaceletException,
ELException
{
String nameStr = getName(ctx);
ValueExpression valueVE = getValue(ctx);
//ctx.getVariableMapper().setVariable(nameStr, valueVE);
apply(ctx, parent, nameStr, valueVE);
}
public void apply(FaceletContext ctx, UIComponent parent, String nameStr, ValueExpression valueVE)
throws IOException, FacesException, FaceletException, ELException
{
AbstractFaceletContext actx = ((AbstractFaceletContext) ctx);
actx.getTemplateContext().setParameter(nameStr, valueVE);
if (actx.getTemplateContext().isAllowCacheELExpressions())
{
if (ELExpressionCacheMode.strict.equals(actx.getELExpressionCacheMode()) ||
ELExpressionCacheMode.allowCset.equals(actx.getELExpressionCacheMode()))
{
actx.getTemplateContext().setAllowCacheELExpressions(false);
}
}
}
public void apply(FaceletContext ctx, UIComponent parent, String nameStr, ValueExpression valueVE,
String uniqueId)
throws IOException, FacesException, FaceletException, ELException
{
AbstractFaceletContext actx = ((AbstractFaceletContext) ctx);
if (ELExpressionCacheMode.alwaysRecompile.equals(actx.getELExpressionCacheMode()))
{
FaceletState faceletState = ComponentSupport.getFaceletState(ctx, parent, true);
faceletState.putBinding(uniqueId, nameStr, valueVE);
ValueExpression ve;
if (ExternalSpecifications.isUnifiedELAvailable())
{
ve = new FaceletStateValueExpressionUEL(uniqueId, nameStr);
}
else
{
ve = new FaceletStateValueExpression(uniqueId, nameStr);
}
actx.getTemplateContext().setParameter(nameStr, ve);
}
else
{
actx.getTemplateContext().setParameter(nameStr, valueVE);
}
if (actx.getTemplateContext().isAllowCacheELExpressions())
{
if (ELExpressionCacheMode.strict.equals(actx.getELExpressionCacheMode()) ||
ELExpressionCacheMode.allowCset.equals(actx.getELExpressionCacheMode()))
{
actx.getTemplateContext().setAllowCacheELExpressions(false);
}
}
}
public String getName(FaceletContext ctx)
{
return this.name.getValue(ctx);
}
public ValueExpression getValue(FaceletContext ctx)
{
return this.value.getValueExpression(ctx, Object.class);
}
}