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package com.sun.faces.el;
import java.beans.FeatureDescriptor;
import java.util.ArrayList;
import java.util.Iterator;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.PropertyNotFoundException;
import javax.el.PropertyNotWritableException;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import com.sun.faces.util.Util;
import com.sun.faces.util.MessageUtils;
public class ImplicitObjectELResolverForJsp extends ImplicitObjectELResolver {
public ImplicitObjectELResolverForJsp() {
}
public Object getValue(ELContext context,Object base, Object property)
throws ELException {
// variable resolution is a special case of property resolution
// where the base is null.
if (base != null) {
return null;
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "property");
throw new PropertyNotFoundException(message);
}
Integer index = IMPLICIT_OBJECTS.get(property.toString());
if (index == null)
{
return null;
}
FacesContext facesContext =
(FacesContext)context.getContext(FacesContext.class);
switch (index.intValue()) {
case FACES_CONTEXT:
context.setPropertyResolved(true);
return facesContext;
case VIEW:
context.setPropertyResolved(true);
return facesContext.getViewRoot();
case VIEW_SCOPE:
context.setPropertyResolved(true);
return facesContext.getViewRoot().getViewMap();
case RESOURCE:
context.setPropertyResolved(true);
return facesContext.getApplication().getResourceHandler();
default:
return null;
}
}
public Class getType(ELContext context, Object base, Object property)
throws ELException {
if (base != null) {
return null;
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "property");
throw new PropertyNotFoundException(message);
}
Integer index = IMPLICIT_OBJECTS.get(property.toString());
if (index == null) {
return null;
}
switch (index) {
case FACES_CONTEXT:
case VIEW:
context.setPropertyResolved(true);
return null;
default:
return null;
}
}
public void setValue(ELContext context, Object base, Object property,
Object val) throws ELException {
if (base != null) {
return;
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "property");
throw new PropertyNotFoundException(message);
}
Integer index = IMPLICIT_OBJECTS.get(property.toString());
if (index == null) {
return;
}
switch (index) {
case FACES_CONTEXT:
throw new PropertyNotWritableException(MessageUtils.getExceptionMessageString
(MessageUtils.OBJECT_IS_READONLY, "facesContext"));
case VIEW:
throw new PropertyNotWritableException(MessageUtils.getExceptionMessageString
(MessageUtils.OBJECT_IS_READONLY, "view"));
default:
}
}
public boolean isReadOnly(ELContext context, Object base, Object property)
throws ELException {
if (base != null) {
return false;
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "property");
throw new PropertyNotFoundException(message);
}
// return value will be ignored unless context.propertyResolved is
// set to true.
Integer index = IMPLICIT_OBJECTS.get(property.toString());
if (index == null) {
return false;
}
switch (index) {
case FACES_CONTEXT:
context.setPropertyResolved(true);
return true;
case VIEW:
context.setPropertyResolved(true);
return true;
default:
return false;
}
}
public Iterator getFeatureDescriptors(ELContext context, Object base) {
if (base != null) {
return null;
}
ArrayList list = new ArrayList(2);
list.add(Util.getFeatureDescriptor("facesContext", "facesContext",
"facesContext",false, false, true, FacesContext.class, Boolean.TRUE));
list.add(Util.getFeatureDescriptor("view", "view",
"root",false, false, true, UIViewRoot.class, Boolean.TRUE));
return list.iterator();
}
public Class getCommonPropertyType(ELContext context, Object base) {
if (base != null) {
return null;
}
return String.class;
}
}
