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package com.sun.faces.facelets.tag.jsf.core;
import com.sun.faces.RIConstants;
import com.sun.faces.facelets.tag.TagHandlerImpl;
import com.sun.faces.facelets.tag.jsf.ComponentSupport;
import com.sun.faces.util.FacesLogger;
import javax.el.MethodExpression;
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.TagAttribute;
import javax.faces.view.facelets.TagConfig;
import java.io.IOException;
import java.util.Locale;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.view.facelets.TagAttributeException;
/**
* Container for all JavaServer Faces core and custom component actions used on
* a page. <p/> See <a target="_new"
* href="http://java.sun.com/j2ee/javaserverfaces/1.1_01/docs/tlddocs/f/view.html">tag
* documentation</a>.
*
* @author Jacob Hookom
* @version $Id$
*/
public final class ViewHandler extends TagHandlerImpl {
private static final Logger LOGGER = FacesLogger.TAGLIB.getLogger();
private final static Class[] LISTENER_SIG = new Class[] { PhaseEvent.class };
private final TagAttribute locale;
private final TagAttribute renderKitId;
private final TagAttribute contentType;
private final TagAttribute encoding;
private final TagAttribute beforePhase;
private final TagAttribute afterPhase;
/**
* @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");
TagAttribute testForNull = this.getAttribute("beforePhase");
this.beforePhase = (null == testForNull) ?
this.getAttribute("beforePhaseListener") : testForNull;
testForNull = this.getAttribute("afterPhase");
this.afterPhase = (null == testForNull) ?
this.getAttribute("afterPhaseListener") : testForNull;
}
/**
* See taglib documentation.
*/
public void apply(FaceletContext ctx, UIComponent parent)
throws IOException {
UIViewRoot root = ComponentSupport.getViewRoot(ctx, parent);
Object partialStateSavingVal = null;
if (root != null) {
if (this.locale != null) {
try {
root.setLocale(ComponentSupport.getLocale(ctx,
this.locale));
} catch (TagAttributeException tae) {
Object result = this.locale.getObject(ctx);
if (null == result) {
Locale l = Locale.getDefault();
// Special case for bugdb 13582626
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING, "Using {0} for locale because expression {1} returned null.", new Object[]{l, this.locale.toString()});
}
root.setLocale(l);
}
}
}
if (this.renderKitId != null) {
String v = this.renderKitId.getValue(ctx);
root.setRenderKitId(v);
}
if (this.contentType != null) {
String v = this.contentType.getValue(ctx);
ctx.getFacesContext().getAttributes().put("facelets.ContentType", v);
}
if (this.encoding != null) {
String v = this.encoding.getValue(ctx);
ctx.getFacesContext().getAttributes().put(RIConstants.FACELETS_ENCODING_KEY, v);
}
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);
}
String viewId = root.getViewId();
// At this point in the lifecycle we should have a non-null/empty
// view id. The partial state saving check below requires this.
assert(null != viewId);
assert(0 < viewId.length());
}
this.nextHandler.apply(ctx, parent);
}
}