com.sun.faces.facelets.compiler.NamespaceHandler Maven / Gradle / Ivy
/*
* 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.compiler;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Map;
import com.sun.faces.el.ELContextImpl;
import com.sun.faces.facelets.el.CompositeFunctionMapper;
import com.sun.faces.facelets.tag.TagLibrary;
import jakarta.el.ELContext;
import jakarta.el.FunctionMapper;
import jakarta.faces.component.UIComponent;
import jakarta.faces.context.FacesContext;
import jakarta.faces.view.facelets.FaceletContext;
import jakarta.faces.view.facelets.FaceletHandler;
final class NamespaceHandler extends FunctionMapper implements FaceletHandler {
private final TagLibrary library;
private final Map ns;
private FaceletHandler next;
public NamespaceHandler(FaceletHandler next, TagLibrary library, Map ns) {
this.library = library;
this.ns = ns;
this.next = next;
}
@Override
public void apply(FaceletContext ctx, UIComponent parent) throws IOException {
FunctionMapper orig = ctx.getFunctionMapper();
pushMapper(ctx.getFacesContext(), this);
ctx.setFunctionMapper(new CompositeFunctionMapper(this, orig));
try {
next.apply(ctx, parent);
} finally {
ctx.setFunctionMapper(orig);
}
}
@Override
public Method resolveFunction(String prefix, String localName) {
String uri = (String) ns.get(prefix);
if (uri != null) {
return library.createFunction(uri, localName);
}
return null;
}
// --------------------------------------------------------- Private Methods
private void pushMapper(FacesContext ctx, FunctionMapper mapper) {
ELContext elContext = ctx.getELContext();
if (elContext instanceof ELContextImpl) {
((ELContextImpl) elContext).setFunctionMapper(mapper);
}
}
}