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Guise™ Internet application framework.

There is a newer version: 0.5.3

/*
 * Copyright © 2005-2008 GlobalMentor, Inc. 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.guise.framework.component;

import com.globalmentor.java.Objects;

import io.guise.framework.GuiseSession;
import io.guise.framework.component.layout.Layout;

/**
 * Abstract implementation of a modal navigation panel.
 * @param  The type of modal result this modal navigation panel produces.
 * @author Garret Wilson
 */
public abstract class AbstractModalNavigationPanel extends AbstractPanel implements ModalNavigationPanel {

	/** The result of this navigation panel's modal interaction, or null if no result is given. */
	private R result = null;

	@Override
	public R getResult() {
		return result;
	}

	@Override
	public void setResult(final R newResult) {
		if(!Objects.equals(result, newResult)) { //if the value is really changing (compare their values, rather than identity)
			final R oldResult = result; //get the old value
			result = newResult; //actually change the value
			firePropertyChange(RESULT_PROPERTY, oldResult, newResult); //indicate that the value changed
		}
	}

	/**
	 * Layout constructor.
	 * @param layout The layout definition for the container.
	 * @throws NullPointerException if the given layout, is null.
	 */
	public AbstractModalNavigationPanel(final Layout layout) {
		super(layout); //construct the parent class
	}

	/**
	 * Ends this navigation panel's modal interaction and navigates either to the previous modal navigation or to this navigation panel's referring URI, if any.
	 * @param result The result of this navigation panel's modal interaction, or null if no result is given.
	 * @see #setResult(Object)
	 * @see GuiseSession#endModalNavigation(ModalNavigationPanel)
	 */
	public void endModal(final R result) {
		/*TODO fix
				setResult(result);	//update the result
				getSession().endModalNavigation(this);	//end modal navigation for this modal frame
		*/
	}
}