javax.faces.component.ValueHolder Maven / Gradle / Ivy
Show all versions of jsf-api Show documentation
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.faces.component;
import javax.faces.convert.Converter;
import javax.el.ValueExpression;
/**
* ValueHolder is an
* interface that may be implemented by any concrete {@link UIComponent}
* that wishes to support a local value, as well as access data in the
* model tier via a value expression, and support conversion
* between String and the model tier data's native data type.
*/
public interface ValueHolder {
// -------------------------------------------------------------- Properties
/**
*
Return the local value of this {@link UIComponent} (if any),
* without evaluating any associated {@link ValueExpression}.
*/
public Object getLocalValue();
/**
* Gets the value of this {@link UIComponent}. If validation
* failed, as indicated by
* {@link javax.faces.context.FacesContext#isValidationFailed}
* returning true, always return the local value.
* Otherwise, first, consult the local value property of this
* component. If non-null return it. If
* null, see if we have a {@link ValueExpression} for
* the value property. If so, return the result of
* evaluating the property, otherwise return null.
* Note that because the specification for {@link
* UIComponent#setValueBinding} requires a call through to {@link
* UIComponent#setValueExpression}, legacy tags will continue to
* work.
*/
public Object getValue();
/**
* Set the value of this {@link UIComponent} (if any).
*
* @param value The new local value
*/
public void setValue(Object value);
/**
* Return the {@link Converter} (if any)
* that is registered for this {@link UIComponent}.
*/
public Converter getConverter();
/**
* Set the {@link Converter} (if any) that is registered for this
* {@link UIComponent}.
*
* @param converter New {@link Converter} (or null)
*/
public void setConverter(Converter converter);
}