com.cyclopsgroup.waterview.navigator.impl.DefaultNavigatorNode.java Source code

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Here is the source code for com.cyclopsgroup.waterview.navigator.impl.DefaultNavigatorNode.java

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/* ==========================================================================
 * Copyright 2002-2004 Cyclops Group Community
 * 
 * Licensed under the Open Software License, Version 2.1 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://opensource.org/licenses/osl-2.1.php
 *
 *  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 com.cyclopsgroup.waterview.navigator.impl;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang.StringUtils;

import com.cyclopsgroup.waterview.MapAttributes;
import com.cyclopsgroup.waterview.Attributes;
import com.cyclopsgroup.waterview.navigator.BaseNavigatorNode;
import com.cyclopsgroup.waterview.navigator.NavigatorNode;
import com.cyclopsgroup.waterview.web.Node;

/**
 * @author <a href="mailto:jiaqi.guo@gmail.com">Jiaqi Guo</a>
 *
 * Default implementation of navigator node
 */
class DefaultNavigatorNode extends BaseNavigatorNode {
    static final String DESCRIPTION_NAME = "description";

    static final String HIDDEN_NAME = "hidden";

    static final String NAME_NAME = "name";

    static final String PAGE_NAME = "page";

    static final String TITLE_NAME = "title";

    private Attributes attributes = new MapAttributes(new HashMap());

    private DefaultNavigatorService navigatorHome;

    private NavigatorNode[] parentNodes;

    private String parentPath;

    private String path;

    DefaultNavigatorNode(DefaultNavigatorService nav, String name, String parentPath) {
        if (StringUtils.isNotEmpty(name)) {
            if (parentPath != null) {
                if (parentPath.equals("/")) {
                    this.path = "/" + name;
                } else {
                    this.path = parentPath + '/' + name;
                }
            } else {
                this.path = name;
            }
        }
        this.parentPath = parentPath;
        this.navigatorHome = nav;
    }

    /**
     * Overwrite or implement method in DefaultNavigatorNode
     *
     * @see com.cyclopsgroup.waterview.web.StaticNode#getAttributes()
     */
    public Attributes getAttributes() {
        return attributes;
    }

    /**
     * Overwrite or implement method in DefaultNavigatorNode
     *
     * @see com.cyclopsgroup.waterview.web.StaticNode#getChildrenNodes()
     */
    public Node[] getChildrenNodes() {
        Collection nodes = navigatorHome.getChildren(path);
        return (Node[]) nodes.toArray(Node.EMPTY_ARRAY);
    }

    /**
     * Overwrite or implement method in DefaultNavigatorNode
     *
     * @see com.cyclopsgroup.waterview.navigator.NavigatorNode#getDescription()
     */
    public String getDescription() {
        return getAttributes().getString(DESCRIPTION_NAME);
    }

    /**
     * Overwrite or implement method in DefaultNavigatorNode
     *
     * @see com.cyclopsgroup.waterview.web.StaticNode#getNodeId()
     */
    public String getNodeId() {
        if (StringUtils.isEmpty(path)) {
            return parentPath + getPage();
        }
        return path;
    }

    /**
     * Overwrite or implement method in DefaultNavigatorNode
     *
     * @see com.cyclopsgroup.waterview.navigator.NavigatorNode#getPage()
     */
    public String getPage() {
        return getAttributes().getString(PAGE_NAME);
    }

    /**
     * Overwrite or implement method getParentNode()
     *
     * @see com.cyclopsgroup.waterview.web.Node#getParentNode()
     */
    public Node getParentNode() {
        return navigatorHome.getNodeByPath(parentPath);
    }

    /**
     * Overwrite or implement method getParentNodes()
     *
     * @see com.cyclopsgroup.waterview.navigator.NavigatorNode#getParentNodes()
     */
    public synchronized NavigatorNode[] getParentNodes() {
        if (parentNodes == null) {
            List parents = new ArrayList();
            NavigatorNode parent = (NavigatorNode) getParentNode();
            if (parent != null) {
                CollectionUtils.addAll(parents, parent.getParentNodes());
                parents.add(parent);
            }
            parentNodes = (NavigatorNode[]) parents.toArray(NavigatorNode.EMPTY_ARRAY);
        }
        return parentNodes;
    }

    /**
     * Get parent path
     *
     * @return Parent path
     */
    public String getParentPath() {
        return parentPath;
    }

    /**
     * Get current path
     *
     * @return Current path
     */
    public String getPath() {
        return path;
    }

    /**
     * Overwrite or implement method getTitle()
     *
     * @see com.cyclopsgroup.waterview.navigator.NavigatorNode#getTitle()
     */
    public String getTitle() {
        return getAttributes().getString(TITLE_NAME);
    }

    /**
     * Overwrite or implement method isHidden()
     *
     * @see com.cyclopsgroup.waterview.navigator.NavigatorNode#isHidden()
     */
    public boolean isHidden() {
        return getAttributes().getBoolean(HIDDEN_NAME);
    }
}