com.sun.faces.cdi.CdiBehavior Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jakarta.faces Show documentation
EE4J Compatible Implementation for Jakarta Faces API
The newest version!
/*
 * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.faces.cdi;

import jakarta.faces.component.StateHolder;
import jakarta.faces.component.behavior.Behavior;
import jakarta.faces.context.FacesContext;
import jakarta.faces.event.BehaviorEvent;

/**
 * A delegate to the CDI managed behavior.
 */
class CdiBehavior implements Behavior, StateHolder {

    /**
     * Stores the behavior id.
     */
    private String behaviorId;

    /**
     * Stores the transient delegate.
     */
    private transient Behavior delegate;

    /**
     * Constructor.
     *
     * @param behaviorId the behavior id.
     * @param delegate the delegate.
     */
    public CdiBehavior(String behaviorId, Behavior delegate) {
        this.behaviorId = behaviorId;
        this.delegate = delegate;
    }

    /**
     * Broadcast the event.
     *
     * @param event the event.
     */
    @Override
    public void broadcast(BehaviorEvent event) {
        getDelegate(event.getFacesContext()).broadcast(event);
    }

    /**
     * Get the delegate.
     *
     * @param facesContext the Faces context.
     * @return the delegate.
     */
    private Behavior getDelegate(FacesContext facesContext) {
        if (delegate == null) {
            delegate = facesContext.getApplication().createBehavior(behaviorId);
        }
        return delegate;
    }

    /**
     * Are we transient?
     *
     * @return false.
     */
    @Override
    public boolean isTransient() {
        return false;
    }

    /**
     * Restore the state.
     *
     * @param facesContext the Faces context.
     * @param state the state.
     */
    @Override
    public void restoreState(FacesContext facesContext, Object state) {
        Object[] stateArray = (Object[]) state;
        behaviorId = (String) stateArray[0];
    }

    /**
     * Save the state.
     *
     * @param facesContext the Faces context.
     * @return the state.
     */
    @Override
    public Object saveState(FacesContext facesContext) {
        return new Object[] { behaviorId };
    }

    /**
     * Set the transient flag.
     *
     * 
     * Since our proxy is required to be non-transient we ignore any calls here.
     * 
     *
     * @param transientValue the transient value.
     */
    @Override
    public void setTransient(boolean transientValue) {
    }
}