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/*
* 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;
/**
* <p class="changed_added_2_0">Components that want to leverage the
* partial state saving feature must implement this interface instead of
* implementing {@link StateHolder}, from which this interface
* inherits.</p>
* @since 2.0
*/
public interface PartialStateHolder extends StateHolder {
/**
* <p class="changed_added_2_0">The runtime must ensure that the
* {@link #markInitialState} method is called on each instance of
* this interface in the view at the appropriate time to indicate
* the component is in its initial state. The implementor of the
* interface must ensure that {@link #initialStateMarked} returns
* <code>true</code> from the time <code>markInitialState()</code>
* is called until {@link #clearInitialState} is called, after which
* time <code>initialStateMarked()</code> must return
* <code>false</code>. Also, during the time that the instance
* returns <code>true</code> from <code>initialStateMarked()</code>,
* the implementation must return only the state that has changed in
* its implementation of {@link StateHolder#saveState}.</p>
* @since 2.0
*/
void markInitialState();
/**
* <p class="changed_added_2_0">Return <code>true</code> if delta
* state changes are being tracked, otherwise <code>false</code></p>
* @since 2.0
*/
boolean initialStateMarked();
/**
* <p class="changed_added_2_0">Reset the PartialStateHolder to a
* non-delta tracking state.</p>
* @since 2.0
*/
void clearInitialState();
}
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