com.sun.facelets.compiler.AttributeInstruction Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jsf-facelets Show documentation
Show all versions of jsf-facelets Show documentation
Facelets is an open source alternative view handler technology for JavaServer Faces (JSF).
The newest version!
/**
* 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.compiler;
import java.io.IOException;
import java.util.List;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.ExpressionFactory;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import com.sun.facelets.el.ELAdaptor;
import com.sun.facelets.el.ELText;
final class AttributeInstruction implements Instruction {
private final String alias;
private final String attr;
private final ELText txt;
public AttributeInstruction(String alias, String attr, ELText txt) {
this.alias = alias;
this.attr = attr;
this.txt = txt;
}
public void write(FacesContext context) throws IOException {
ResponseWriter out = context.getResponseWriter();
try {
ELContext elContext = ELAdaptor.getELContext(context);
String val = txt.toString(elContext);
out.writeAttribute(attr, val, null);
} catch (ELException e) {
throw new ELException(this.alias + ": " + e.getMessage(), e.getCause());
} catch (Exception e) {
throw new ELException(this.alias + ": " + e.getMessage(), e);
}
}
public Instruction apply(ExpressionFactory factory, ELContext ctx) {
ELText nt = this.txt.apply(factory, ctx);
if (nt == this.txt) {
return this;
}
return new AttributeInstruction(alias, attr, nt);
}
public boolean isLiteral() {
return txt.isLiteral();
}
}