com.liferay.wikinavigation.util.MenuItem.java Source code

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Here is the source code for com.liferay.wikinavigation.util.MenuItem.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.wikinavigation.util;

import com.liferay.portal.kernel.util.Http;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portlet.wiki.model.WikiNode;
import com.liferay.portlet.wiki.model.WikiPage;
import com.liferay.portlet.wiki.service.WikiPageServiceUtil;

import java.io.Serializable;

import java.util.LinkedList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.portlet.PortletURL;

/**
 * @author Thiago Moreira
 * @author Peter Shin
 */
public class MenuItem implements Serializable {

    public static List<MenuItem> fromWikiNode(long nodeId, int depth, PortletURL portletURL) {

        List<WikiPage> wikiPages = null;

        try {
            wikiPages = WikiPageServiceUtil.getNodePages(nodeId, WikiNavigationConstants.MAX_PAGES);
        } catch (Exception e) {
            return new LinkedList<MenuItem>();
        }

        return _fromWikiNode(wikiPages, 1, depth, portletURL);
    }

    public static List<MenuItem> fromWikiPage(WikiPage wikiPage, PortletURL portletURL) {

        return _fromWikiPage(wikiPage, portletURL);
    }

    public MenuItem() {
        _children = new LinkedList<MenuItem>();
    }

    public void addChild(MenuItem child) {
        _children.add(child);
    }

    public void addChildren(List<MenuItem> children) {
        _children.addAll(children);
    }

    public List<MenuItem> getChildren() {
        return _children;
    }

    public boolean getExternalURL() {
        return _externalURL;
    }

    public String getLabel() {
        return _label;
    }

    public String getURL() {
        return _url;
    }

    public void setChildren(List<MenuItem> children) {
        _children = children;
    }

    public void setExternalURL(boolean externalURL) {
        _externalURL = externalURL;
    }

    public void setLabel(String label) {
        _label = label;
    }

    public void setURL(String url) {
        _url = url;
    }

    private static List<MenuItem> _fromWikiNode(List<WikiPage> wikiPages, int curDepth, int depth,
            PortletURL portletURL) {

        List<MenuItem> menuItems = new LinkedList<MenuItem>();

        for (WikiPage wikiPage : wikiPages) {
            if ((wikiPage.fetchParentPage() != null) && (curDepth == 1)) {
                continue;
            }

            String title = wikiPage.getTitle();
            WikiNode wikiNode = wikiPage.getNode();

            portletURL.setParameter("nodeId", String.valueOf(wikiNode.getNodeId()));
            portletURL.setParameter("title", title);

            MenuItem menuItem = new MenuItem();

            menuItem.setLabel(title);
            menuItem.setURL(portletURL.toString());

            if ((depth >= curDepth) || (depth == WikiNavigationConstants.DEPTH_ALL)) {

                List<MenuItem> children = _fromWikiNode(wikiPage.getViewableChildPages(), curDepth + 1, depth,
                        portletURL);

                menuItem.addChildren(children);
            }

            menuItems.add(menuItem);
        }

        return menuItems;
    }

    private static List<MenuItem> _fromWikiPage(WikiPage wikiPage, PortletURL portletURL) {

        List<MenuItem> menuItems = new LinkedList<MenuItem>();

        Matcher matcher = _pattern.matcher(wikiPage.getContent());

        MenuItem menuItem = null;

        while (matcher.find()) {
            String title = matcher.group(3);

            if (title != null) {
                menuItem = new MenuItem();

                menuItem.setLabel(title);

                menuItems.add(menuItem);
            }

            if (menuItem == null) {
                menuItem = new MenuItem();

                menuItem.setLabel(StringPool.BLANK);

                menuItems.add(menuItem);
            }

            String s = matcher.group(6);

            if (s != null) {
                MenuItem childMenuItem = new MenuItem();

                int index = s.indexOf(StringPool.PIPE);

                String label = null;
                String url = null;

                if (index != -1) {
                    label = s.substring(index + 1);
                    url = s.substring(0, index);

                    if (!url.startsWith(Http.HTTP)) {
                        long nodeId = wikiPage.getNodeId();

                        portletURL.setParameter("title", url);
                        portletURL.setParameter("nodeId", String.valueOf(nodeId));

                        url = portletURL.toString();
                    } else {
                        childMenuItem.setExternalURL(true);
                    }
                } else {
                    label = s;
                    url = s;

                    if (!url.startsWith(Http.HTTP)) {
                        long nodeId = wikiPage.getNodeId();

                        portletURL.setParameter("title", url);
                        portletURL.setParameter("nodeId", String.valueOf(nodeId));

                        url = portletURL.toString();
                    }
                }

                childMenuItem.setLabel(label);
                childMenuItem.setURL(url);

                menuItem.addChild(childMenuItem);
            }
        }

        return menuItems;
    }

    private static Pattern _pattern = Pattern.compile("((==\\s((.)*)\\s==)*(\\Q[[\\E((.)*)\\Q]]\\E)*)*");

    private List<MenuItem> _children;
    private boolean _externalURL;
    private String _label;
    private String _url;

}