cmshistorylist.java

cms是开源的框架

/*
 * File   : $Source: /usr/local/cvs/opencms/src/org/opencms/workplace/commons/CmsHistoryList.java,v $
 * Date   : $Date: 2006/03/30 09:31:45 $
 * Version: $Revision: 1.5 $
 *
 * This library is part of OpenCms -
 * the Open Source Content Mananagement System
 *
 * Copyright (c) 2005 Alkacon Software GmbH (http://www.alkacon.com)
 *
 * 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.
 *
 * For further information about Alkacon Software GmbH, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.opencms.workplace.commons;

import org.opencms.file.CmsBackupProject;
import org.opencms.file.CmsBackupResource;
import org.opencms.file.CmsBackupResourceHandler;
import org.opencms.file.CmsFile;
import org.opencms.file.CmsObject;
import org.opencms.file.CmsResource;
import org.opencms.file.CmsResourceFilter;
import org.opencms.jsp.CmsJspActionElement;
import org.opencms.main.CmsException;
import org.opencms.main.CmsLog;
import org.opencms.main.CmsRuntimeException;
import org.opencms.workplace.list.A_CmsListDialog;
import org.opencms.workplace.list.CmsListColumnAlignEnum;
import org.opencms.workplace.list.CmsListColumnDefinition;
import org.opencms.workplace.list.CmsListDirectAction;
import org.opencms.workplace.list.CmsListItem;
import org.opencms.workplace.list.CmsListItemActionIconComparator;
import org.opencms.workplace.list.CmsListItemSelectionAction;
import org.opencms.workplace.list.CmsListMetadata;
import org.opencms.workplace.list.CmsListOrderEnum;
import org.opencms.workplace.list.CmsListRadioMultiAction;
import org.opencms.workplace.list.CmsListResourceIconAction;
import org.opencms.workplace.tools.CmsToolDialog;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.PageContext;

import org.apache.commons.logging.Log;

/**
 * Displays the history of a file.<p>
 * 
 * @author Jan Baudisch  
 * @author Armen Markarian 
 * 
 * @version $Revision: 1.5 $ 
 * 
 * @since 6.0.2 
 */
public class CmsHistoryList extends A_CmsListDialog {

    /** 
     * Wrapper class for the version which is either an integer or the string "offline".<p>
     */
    public static class CmsVersionWrapper implements Comparable {
        
        private Object m_version;
        
        /** 
         * Constructs a new version wrapper.<p>
         * @param version the version of the file
         */
        public CmsVersionWrapper(Object version) {
            
            m_version = version;
        }
        
        /**
         * 
         * @see java.lang.Comparable#compareTo(java.lang.Object)
         */
        public int compareTo(Object o) {
            
            CmsVersionWrapper version = (CmsVersionWrapper)o;
            if (String.class.equals(version.getVersion().getClass()) && Integer.class.equals(getVersion().getClass())) {
                return -1;
            } else if (Integer.class.equals(version.getVersion().getClass()) && String.class.equals(getVersion().getClass())) {
                return 1;
            } else {
                return ((Comparable)m_version).compareTo(version.getVersion());   
            }
        }
        
        /**
         * Returns the version of the file.<p>
         * @return the version of the file
         */
        public Object getVersion() {
            
            return m_version;
        }
        
        /**
         * 
         * @see java.lang.Object#toString()
         */
        public String toString() {
            
            return m_version.toString();   
        }
        
    }
    
    /** List action export. */
    public static final String LIST_ACTION_RESTORE = "ar";

    /** list action id constant. */
    public static final String LIST_ACTION_VIEW = "av";

    /** list column id constant. */
    public static final String LIST_COLUMN_DATE_LAST_MODIFIED = "cm";

    /** list column id constant. */
    public static final String LIST_COLUMN_DATE_PUBLISHED = "cdp";

    /** list column id constant. */
    public static final String LIST_COLUMN_FILE_TYPE = "ct";
    
    /** list column id constant. */
    public static final String LIST_COLUMN_ICON = "ci";

    /** list column id constant. */
    public static final String LIST_COLUMN_RESOURCE_PATH = "crp";

    /** List column delete. */
    public static final String LIST_COLUMN_RESTORE = "cr";
    
    /** list column id constant. */
    public static final String LIST_COLUMN_SEL1 = "cs1";

    /** list column id constant. */
    public static final String LIST_COLUMN_SEL2 = "cs2";

    /** list column id constant. */
    public static final String LIST_COLUMN_SIZE = "cs";
    
    /** List column export. */
    public static final String LIST_COLUMN_USER = "cu";

    /** list column id constant. */
    public static final String LIST_COLUMN_VERSION = "cv";

    /** List column export. */
    public static final String LIST_COLUMN_VIEW = "cp";
    
    /** list id constant. */
    public static final String LIST_ID = "him";

    /** list independent action id constant. */
    public static final String LIST_RACTION_SEL1 = "rs1";

    /** list independent action id constant. */
    public static final String LIST_RACTION_SEL2 = "rs2";

    /** constant for the offline project.<p> */
    public static final String OFFLINE_PROJECT = "offline";

    /** parameter for the version of the first resource. */
    public static final String PARAM_TAGID_1 = "tagid1";

    /** parameter for the tag id of the second resource. */
    public static final String PARAM_TAGID_2 = "tagid2";

    /** parameter for the version of the first resource. */
    public static final String PARAM_VERSION_1 = "version1";

    /** parameter for the version of the second resource. */
    public static final String PARAM_VERSION_2 = "version2";

    /** parameter for the path of the first resource. */
    public static final String PARAM_PATH_1 = "path1";

    /** parameter for the path of the second resource. */
    public static final String PARAM_PATH_2 = "path2";
    
    /** Path to the list buttons. */
    public static final String PATH_BUTTONS = "buttons/";
    
    /** list multi action id constant. */
    private static final String LIST_MACTION_COMPARE = "mc";
    
    /** The log object for this class. */
    private static final Log LOG = CmsLog.getLog(CmsHistoryList.class);

    /**
     * Public constructor.<p>
     * 
     * @param jsp an initialized JSP action element
     */
    public CmsHistoryList(CmsJspActionElement jsp) {

        super(jsp, LIST_ID, Messages.get().container(Messages.GUI_HISTORY_0),
            LIST_COLUMN_VERSION, CmsListOrderEnum.ORDER_DESCENDING, null);
    }

    /**
     * Public constructor with JSP variables.<p>
     * 
     * @param context the JSP page context
     * @param req the JSP request
     * @param res the JSP response
     */
    public CmsHistoryList(PageContext context, HttpServletRequest req, HttpServletResponse res) {

        this(new CmsJspActionElement(context, req, res));
    }
    
    /**
     * @see org.opencms.workplace.list.A_CmsListDialog#executeListMultiActions()
     */
    public void executeListMultiActions() throws IOException, ServletException {

        if (getParamListAction().equals(LIST_MACTION_COMPARE)) {
            CmsListItem item1 = (CmsListItem)getSelectedItems().get(0);
            CmsListItem item2 = (CmsListItem)getSelectedItems().get(1);
            Map params = new HashMap();
            if (((Comparable)item2.get(LIST_COLUMN_VERSION)).compareTo(item1.get(LIST_COLUMN_VERSION)) > 0) {
                params.put(PARAM_TAGID_1, item1.getId());
                params.put(PARAM_TAGID_2, item2.getId());
                params.put(PARAM_VERSION_1, item1.get(LIST_COLUMN_VERSION));
                params.put(PARAM_VERSION_2, item2.get(LIST_COLUMN_VERSION));
                params.put(PARAM_PATH_1, item1.get(LIST_COLUMN_RESOURCE_PATH));
                params.put(PARAM_PATH_2, item2.get(LIST_COLUMN_RESOURCE_PATH));                
            } else {
                params.put(PARAM_TAGID_1, item2.getId());
                params.put(PARAM_TAGID_2, item1.getId());
                params.put(PARAM_VERSION_1, item2.get(LIST_COLUMN_VERSION));
                params.put(PARAM_VERSION_2, item1.get(LIST_COLUMN_VERSION));
                params.put(PARAM_PATH_1, item2.get(LIST_COLUMN_RESOURCE_PATH));
                params.put(PARAM_PATH_2, item1.get(LIST_COLUMN_RESOURCE_PATH));    
            }
            params.put(PARAM_ACTION, DIALOG_INITIAL);
            params.put(PARAM_STYLE, CmsToolDialog.STYLE_NEW);
            params.put(PARAM_RESOURCE, getParamResource());
            getToolManager().jspForwardTool(this, "/history/comparison", params);
        }
        refreshList();
    }
    
    /**
     * @see org.opencms.workplace.list.A_CmsListDialog#executeListSingleActions()
     */
    public void executeListSingleActions() throws IOException, ServletException {

        if (getParamListAction().equals(LIST_ACTION_RESTORE)) {
            try {
                performRestoreOperation();
                Map params = new HashMap();
                params.put(PARAM_ACTION, DIALOG_INITIAL);
                getToolManager().jspForwardPage(this, "/system/workplace/views/explorer/explorer_files.jsp", params);
            } catch (CmsException e) {
                LOG.error(e.getMessage(), e); 
                throw new CmsRuntimeException(e.getMessageContainer());
            }
        }
        refreshList();
    }

    /**
     * @see org.opencms.workplace.list.A_CmsListDialog#defaultActionHtmlStart()
     */