cmsnewexplorerfilelist.java

内容管理

/*
* File   : $Source: /usr/local/cvs/opencms/src/com/opencms/workplace/Attic/CmsNewExplorerFileList.java,v $
* Date   : $Date: 2003/03/04 17:30:10 $
* Version: $Revision: 1.61 $
*
* This library is part of OpenCms -
* the Open Source Content Mananagement System
*
* Copyright (C) 2001  The OpenCms Group
*
* 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 OpenCms, please see the
* OpenCms 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 com.opencms.workplace;

import com.opencms.boot.I_CmsLogChannels;
import com.opencms.core.A_OpenCms;
import com.opencms.core.CmsException;
import com.opencms.core.I_CmsConstants;
import com.opencms.core.I_CmsSession;
import com.opencms.file.CmsFolder;
import com.opencms.file.CmsObject;
import com.opencms.file.CmsRequestContext;
import com.opencms.file.CmsResource;
import com.opencms.file.I_CmsRegistry;
import com.opencms.flex.util.CmsMessages;
import com.opencms.launcher.I_CmsTemplateCache;
import com.opencms.template.CmsCacheDirectives;
import com.opencms.template.I_CmsDumpTemplate;
import com.opencms.template.cache.A_CmsElement;
import com.opencms.template.cache.CmsElementDump;
import com.opencms.util.Encoder;
import com.opencms.util.Utils;

import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Vector;

/**
 * Template class for dumping files to the output without further
 * interpreting or processing.
 * This can be used for plain text files or files containing graphics.
 *
 * @author Alexander Lucas
 * @version $Revision: 1.61 $ $Date: 2003/03/04 17:30:10 $
 */
public class CmsNewExplorerFileList implements I_CmsDumpTemplate,I_CmsLogChannels,I_CmsConstants,I_CmsWpConstants {

    /**
     * This is the number of resources that are shown on one page.
     * If a folder contains more than this we have to split the entrys
     * to more than one page.
     * TODO: set this in the user preferences, so that each user can select how many resources he wants to see at once
     */
    private final static int C_ENTRYS_PER_PAGE = 50;

    // the session key for the current page
    private final static String C_SESSION_CURRENT_PAGE = "explorerFilelistCurrentPage";

    /** Internal debugging flag */
    public static final int DEBUG = 0;

    public CmsNewExplorerFileList() {
    }

    /**
     * gets the caching information from the current template class.
     *
     * @param cms CmsObject Object for accessing system resources
     * @param templateFile Filename of the template file
     * @param elementName Element name of this template in our parent template.
     * @param parameters Hashtable with all template class parameters.
     * @param templateSelector template section that should be processed.
     * @return <EM>true</EM> if this class may stream it's results, <EM>false</EM> otherwise.
     */
    public CmsCacheDirectives getCacheDirectives(CmsObject cms, String templateFile, String elementName, Hashtable parameters, String templateSelector) {
        // First build our own cache directives.
        return new CmsCacheDirectives(false);
    }

    /**
     * Insert the method's description here.
     * Creation date: (29.11.00 14:05:21)
     * @return boolean
     * @param cms com.opencms.file.CmsObject
     * @param path java.lang.String
     */

    private boolean folderExists(CmsObject cms, String path) {
        try {
            CmsFolder test = cms.readFolder(path);
            if (test.isFile()){
                return false;
            }
        }
        catch(Exception e) {
            return false;
        }
        return true;
    }

    /**
     * Gets the content of a given template file.
     *
     * @param cms CmsObject Object for accessing system resources
     * @param templateFile Filename of the template file
     * @param elementName <em>not used here</em>.
     * @param parameters <em>not used here</em>.
     * @return Unprocessed content of the given template file.
     * @throws CmsException
     */

    public byte[] getContent(CmsObject cms, String templateFile, String elementName,
            Hashtable parameters) throws CmsException {
        if(A_OpenCms.isLogging(I_CmsLogChannels.C_OPENCMS_DEBUG) && I_CmsLogChannels.C_LOGGING && (DEBUG > 0)) {
            A_OpenCms.log(C_OPENCMS_DEBUG, "[CmsDumpTemplate] Now dumping contents of file "
                    + templateFile);
        }
        I_CmsSession session = cms.getRequestContext().getSession(true);
        String lang = CmsXmlLanguageFile.getCurrentUserLanguage(cms);
        CmsMessages messages = new CmsMessages("com.opencms.workplace.workplace", new Locale(lang, "", ""));        

        // get the right folder
        String currentFolder = (String)parameters.get("folder");
        if ((currentFolder != null) && (currentFolder.startsWith("vfslink:"))) {
            // this is a link chck, remove the prefix
            parameters.put("mode", "vfslink");
            parameters.put("file", currentFolder.substring(8));  
        } else {
            if((currentFolder != null) && (!"".equals(currentFolder)) && 
                    folderExists(cms, currentFolder)) {
            session.putValue(C_PARA_FILELIST, currentFolder);
        }else {
            currentFolder = (String)session.getValue(C_PARA_FILELIST);
            if((currentFolder == null) || (!folderExists(cms, currentFolder))) {
                currentFolder = cms.rootFolder().getAbsolutePath();
                session.putValue(C_PARA_FILELIST, currentFolder);
            }
        }
        }

        String mode = (String)parameters.get("mode");
        // if the parameter mode=listonly is set, only the list will be shown
        boolean listonly = "listonly".equals(mode); 
        // if the parameter mode=projectview is set, all changed files in that project will be shown
        boolean projectView = "projectview".equals(mode);
        // if the parameter mode=vfslinks is set, the links to a target file will be shown
        boolean vfslinkView = "vfslink".equals(mode);
        if (vfslinkView) {
            String file = (String)parameters.get("file");
            boolean found = true;
            try {
                cms.readFileHeader(file);
            } catch (CmsException e) {
                // file was not readable
                found = false;
            }
            if (found) {
                // file / folder exists and is readable
                currentFolder = "vfslink:" + file;
            } else {
                // show the root folder in case of an error and reset the state
                currentFolder = cms.rootFolder().getAbsolutePath();
                vfslinkView = false;
                parameters.remove("mode");
            }
            session.putValue(C_PARA_FILELIST, currentFolder);            
        }
        
        if (DEBUG > 2) {
            // output parameters
            System.err.println("[" + System.currentTimeMillis() + "] CmsNewExplorerFileList.getContent() called");
            System.err.println("templateFile=" + templateFile);
            System.err.println("elementName=" + elementName);
            Iterator i = parameters.keySet().iterator();
            while (i.hasNext()){
                String key = (String)i.next();
                System.err.println("parameters:  key=" + key + " value=" + parameters.get(key));
            }
            System.err.println();
        }

        boolean noKontext = "false".equals(parameters.get("kontext"));

        // the flaturl to use for changing folders
        String flaturl = (String) parameters.get("flaturl");

        // get the checksum
        String checksum = (String)parameters.get("check");
        boolean newTreePlease = true;
        long check = -1;
        try {
            check = Long.parseLong(checksum);
            if(check == cms.getFileSystemFolderChanges()) {
                newTreePlease = false;
            }
        }catch(Exception e) {
        }
        check = cms.getFileSystemFolderChanges();

        // get the currentFolder Id
        int currentFolderId;
        if (! vfslinkView) {
            currentFolderId = (cms.readFolder(currentFolder)).getResourceId();
        } else {
            currentFolderId = -1;            
        }
        // start creating content
        StringBuffer content = new StringBuffer(2048);
        content.append("<html> \n<head> \n");
        content.append("<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=");
        content.append(cms.getRequestContext().getEncoding());
        content.append("\">\n");
        content.append("<script language=JavaScript>\n");
        content.append("function initialize() {\n");

        if(listonly) {
            content.append("top.openfolderMethod='openthisfolderflat';\n");
        } else {
            content.append("top.openfolderMethod='openthisfolder';\n");
        }
        if(projectView || vfslinkView) {
            content.append("top.projectView=true;\n");
        } else {
            content.append("top.projectView=false;\n");
        }

        // show kontext
        if(noKontext) {
            content.append("top.showKon=false;\n");
        } else {
            content.append("top.showKon=true;\n");
        }