tree.java

jsp + xmｌ实现ｔｒｅｅｖｉｅｗ

/*
 * ====================================================================
 * The JSP Tree Software License, Version 1.1
 *
 * (this license is derived and fully compatible with the Apache Software
 * License - see http://www.apache.org/LICENSE.txt)
 *
 * Copyright (c) 2002-2005 jsptree.sourceforge.net . All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by
 *        jsptree.sourceforge.net (http://jsptree.sourceforge.net/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The name "JSP Tree" must not be used to endorse or promote
 *    products derived from this software without prior written permission.
 *    For written permission, please contact [e-mail] .
 *
 * 5. Products derived from this software may not be called "JSP Tree",
 *    nor may "JSP Tree" appear in their name, without prior written
 *    permission of jsptree.sourceforge.net.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 */

package net.sf.jsptree.tree;

/**
 * Defines a suitable data model interface for a <code>Tree</code>.
 *
 * @author Vladislav Kamensky
 */
public interface Tree extends TreeStructureModel {

    /**
     * Opens specified node if it exists.
     *
     * @param node to be opened.
     * @return <code>true</code> if node has been opened;
     *         <code>false</code> otherwise.
     */
    boolean openNode(Object node);

    /**
     * Closes specified node if it exists.
     *
     * @param node to be closed.
     * @return <code>true</code> if node has been closed;
     *         <code>false</code> otherwise.
     */
    boolean closeNode(Object node);

    /**
     * Closes all tree's nodes.
     */
    void closeAllNodes();

    /**
     * Tests whether specified node is opened or not.
     *
     * @param node node to be tested
     * @return <code>true</code> if node is opened;
     *         <code>false</code> otherwise.
     */
    boolean isNodeOpened(Object node);

    /**
     * Selects specified node if it exists.
     *
     * @param node to be selected.
     * @return <code>true</code> if node has been selected;
     *         <code>false</code> otherwise.
     */
    boolean selectNode(Object node);

    /**
     * Unselects specified node if it exists.
     *
     * @param node to be unselected.
     * @return <code>true</code> if node has been unselected;
     *         <code>false</code> otherwise.
     */
    boolean unselectNode(Object node);

    /**
     * Tests whether specified node is selected or not.
     *
     * @param node node to be tested
     * @return <code>true</code> if node is selected;
     *         <code>false</code> otherwise.
     */
    boolean isNodeSelected(Object node);

    /**
     * Unselects all tree's nodes.
     */
    void unselectAllNodes();
}