/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package javax.faces.component;
import java.util.*;
import javax.el.*;
import javax.faces.*;
import javax.faces.context.*;
import javax.faces.convert.*;
public class UIOutput extends UIComponentBase implements ValueHolder
{
public static final String COMPONENT_FAMILY = "javax.faces.Output";
public static final String COMPONENT_TYPE = "javax.faces.Output";
private Converter _converter;
private ValueExpression _converterExpr;
private Object _value;
private ValueExpression _valueExpr;
public UIOutput()
{
setRendererType("javax.faces.Text");
}
/**
* Returns the component family, used to select the renderer.
*/
public String getFamily()
{
return COMPONENT_FAMILY;
}
//
// Properties
//
public Object getLocalValue()
{
return _value;
}
public Object getValue()
{
if (_value != null)
return _value;
else if (_valueExpr != null)
return Util.eval(_valueExpr, getFacesContext());
else
return null;
}
public void setValue(Object value)
{
_value = value;
}
//
// expression map override
//
/**
* Returns the value expression with the given name.
*/
@Override
public ValueExpression getValueExpression(String name)
{
if ("value".equals(name))
return _valueExpr;
else if ("converter".equals(name))
return _converterExpr;
else
return super.getValueExpression(name);
}
/**
* Sets the value expression with the given name.
*/
@Override
public void setValueExpression(String name, ValueExpression expr)
{
if ("value".equals(name)) {
if (expr != null && expr.isLiteralText()) {
_value = expr.getValue(null);
return;
}
else
_valueExpr = expr;
}
else if ("converter".equals(name)) {
_converterExpr = expr;
}
super.setValueExpression(name, expr);
}
//
// Rendering
//
public Converter getConverter()
{
if (_converter != null)
return _converter;
else if (_converterExpr != null) {
Object object = Util.eval(_converterExpr, getFacesContext());
if (object == null)
return null;
else if (object instanceof Converter)
return (Converter) object;
else if (object instanceof String) {
String name = (String) object;
return getFacesContext().getApplication().createConverter(name);
}
else
return (Converter) object;
}
else
return null;
}
public void setConverter(Converter converter)
{
_converter = converter;
}
//
// state
//
public Object saveState(FacesContext context)
{
Object parent = super.saveState(context);
return new Object[] {
parent,
_value,
saveAttachedState(context, _converter),
};
}
public void restoreState(FacesContext context, Object value)
{
Object []state = (Object []) value;
super.restoreState(context, state[0]);
_value = state[1];
_converter = (Converter) restoreAttachedState(context, state[2]);
}
}