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The private implementation classes of the Apache MyFaces Core JSF-2.3-next Implementation
/*
* 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.jsf.core;
import java.io.IOException;
import java.util.Arrays;
import javax.el.ELException;
import javax.el.MethodExpression;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;
import javax.faces.event.PhaseEvent;
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.lang.StringUtils;
import org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage;
import org.apache.myfaces.view.facelets.tag.jsf.ComponentSupport;
/**
* Container for all JavaServer Faces core and custom component actions used on a page.
*
* @author Jacob Hookom
* @version $Id$
*/
@JSFFaceletTag(
name = "f:view",
bodyContent = "empty",
componentClass="javax.faces.component.UIViewRoot")
public final class ViewHandler extends TagHandler
{
private final static Class[] LISTENER_SIG = new Class[] { PhaseEvent.class };
@JSFFaceletAttribute
private final TagAttribute locale;
@JSFFaceletAttribute
private final TagAttribute renderKitId;
@JSFFaceletAttribute
private final TagAttribute contentType;
@JSFFaceletAttribute
private final TagAttribute encoding;
@JSFFaceletAttribute
private final TagAttribute beforePhase;
@JSFFaceletAttribute
private final TagAttribute afterPhase;
@JSFFaceletAttribute(name="transient")
private final TagAttribute transientAttribute;
private final TagAttribute contracts;
private final TagAttribute oamEnableViewPool;
/**
* @param config
*/
public ViewHandler(TagConfig config)
{
super(config);
this.locale = this.getAttribute("locale");
this.renderKitId = this.getAttribute("renderKitId");
this.contentType = this.getAttribute("contentType");
this.encoding = this.getAttribute("encoding");
this.beforePhase = this.getAttribute("beforePhase");
this.afterPhase = this.getAttribute("afterPhase");
this.transientAttribute = this.getAttribute("transient");
this.contracts = this.getAttribute("contracts");
this.oamEnableViewPool = this.getAttribute("oamEnableViewPool");
}
/**
* See taglib documentation.
*
* @see javax.faces.view.facelets.FaceletHandler#apply(javax.faces.view.facelets.FaceletContext, javax.faces.component.UIComponent)
*/
@Override
public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException, FaceletException,
ELException
{
UIViewRoot root = ComponentSupport.getViewRoot(ctx, parent);
if (root != null)
{
if (this.locale != null)
{
root.setLocale(ComponentSupport.getLocale(ctx, this.locale));
}
if (this.renderKitId != null)
{
String v = this.renderKitId.getValue(ctx);
root.setRenderKitId(v);
}
String encodingValue = null;
if (this.contentType != null)
{
// This value is read as rfc2616 section 3.7 Media Types.
// We should check and extract the param "charset" and assing
// it as encoding for this page.
String v = this.contentType.getValue(ctx);
if (v != null)
{
int j = v.indexOf(';');
if (j >= 0)
{
int i = v.indexOf("charset",j);
if (i >= 0)
{
i = v.indexOf('=',i)+1;
if (v.length() > i)
{
encodingValue = v.substring(i);
}
// Substract charset from encoding, it will be added
// later on FaceletViewDeclarationLanguage.createResponseWriter
// by calling response.setContentType
v = v.substring(0 , j);
}
}
}
ctx.getFacesContext().getAttributes().put("facelets.ContentType", v);
}
if (this.encoding != null)
{
String v = this.encoding.getValue(ctx);
ctx.getFacesContext().getAttributes().put(FaceletViewDeclarationLanguage.PARAM_ENCODING, v);
}
else if (encodingValue != null)
{
ctx.getFacesContext().getAttributes().put(FaceletViewDeclarationLanguage.PARAM_ENCODING,
encodingValue);
}
if (this.beforePhase != null)
{
MethodExpression m = this.beforePhase.getMethodExpression(ctx, null, LISTENER_SIG);
root.setBeforePhaseListener(m);
}
if (this.afterPhase != null)
{
MethodExpression m = this.afterPhase.getMethodExpression(ctx, null, LISTENER_SIG);
root.setAfterPhaseListener(m);
}
if (this.transientAttribute != null)
{
root.setTransient(this.transientAttribute.getBoolean(ctx));
}
if (this.contracts != null)
{
String contractsValue = this.contracts.getValue(ctx);
if (contractsValue != null)
{
String[] values = StringUtils.trim(StringUtils.splitShortString(contractsValue, ','));
if (values != null)
{
ctx.getFacesContext().setResourceLibraryContracts(Arrays.asList(values));
}
}
}
if (this.oamEnableViewPool != null)
{
root.getAttributes().put("oamEnableViewPool", this.oamEnableViewPool.getBoolean(ctx));
}
}
this.nextHandler.apply(ctx, parent);
}
}