com.sun.faces.facelets.tag.faces.core.PassThroughAttributeHandler Maven / Gradle / Ivy
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/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.faces.facelets.tag.faces.core;
import java.io.IOException;
import java.util.Map;
import com.sun.faces.facelets.tag.TagHandlerImpl;
import jakarta.faces.component.UIComponent;
import jakarta.faces.view.facelets.FaceletContext;
import jakarta.faces.view.facelets.TagAttribute;
import jakarta.faces.view.facelets.TagConfig;
import jakarta.faces.view.facelets.TagException;
/**
* Sets the specified name and attribute on the parent UIComponent. If the "value" specified is not a literal, it will
* instead set the ValueExpression on the UIComponent.
*
*
* See tag
* documentation.
*
* @see jakarta.faces.component.UIComponent#getAttributes()
* @see jakarta.faces.component.UIComponent#setValueExpression(java.lang.String, jakarta.el.ValueExpression)
* @author Jacob Hookom
*/
public final class PassThroughAttributeHandler extends TagHandlerImpl implements jakarta.faces.view.facelets.AttributeHandler {
private final TagAttribute name;
private final TagAttribute value;
/**
* @param config
*/
public PassThroughAttributeHandler(TagConfig config) {
super(config);
name = getRequiredAttribute("name");
value = getRequiredAttribute("value");
}
/*
* (non-Javadoc)
*
* @see com.sun.facelets.FaceletHandler#apply(com.sun.facelets.FaceletContext, jakarta.faces.component.UIComponent)
*/
@Override
public void apply(FaceletContext ctx, UIComponent parent) throws IOException {
if (parent == null) {
throw new TagException(tag, "Parent UIComponent was null");
}
// only process if the parent is new to the tree
if (parent.getParent() == null) {
Map passThroughAttrs = parent.getPassThroughAttributes(true);
String attrName;
Object attrValue;
attrName = name.getValue(ctx);
attrValue = value.isLiteral() ? value.getValue(ctx) : value.getValueExpression(ctx, Object.class);
passThroughAttrs.put(attrName, attrValue);
}
}
// jakarta.faces.view.facelets.tag.AttributeHandler.getAttributeName()
// implementation.
@Override
public String getAttributeName(FaceletContext ctxt) {
return name.getValue(ctxt);
}
}