cmsnewresourcelink.java

内容管理

/*
* File   : $Source: /usr/local/cvs/opencms/src/com/opencms/workplace/CmsNewResourceLink.java,v $
* Date   : $Date: 2004/01/07 10:57:09 $
* Version: $Revision: 1.35.2.1 $
*
* 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.core.CmsException;
import com.opencms.core.I_CmsConstants;
import com.opencms.core.I_CmsSession;
import com.opencms.file.CmsFile;
import com.opencms.file.CmsFolder;
import com.opencms.file.CmsLinkCheck;
import com.opencms.file.CmsObject;
import com.opencms.file.CmsResource;
import com.opencms.util.Encoder;

import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Map;
import java.util.Vector;

/**
 * Template class for displaying the new resource screen for a new link
 * of the OpenCms workplace.<P>
 * Reads template files of the content type <code>CmsXmlWpTemplateFile</code>.
 *
 * @author Michael Emmerich
 * @version $Revision: 1.35.2.1 $ $Date: 2004/01/07 10:57:09 $
 */

public class CmsNewResourceLink extends CmsWorkplaceDefault implements I_CmsWpConstants,I_CmsConstants {
    
    private static final String C_PARA_KEEP_PROPERTIES = "keepproperties";
    private static final String C_PARA_ADD_TO_NAV = "addtonav";
    private static final int DEBUG = 0;

    /**
     * Overwrites the getContent method of the CmsWorkplaceDefault.<br>
     * Gets the content of the new resource othertype template and processed the data input.
     * @param cms The CmsObject.
     * @param templateFile The lock template file
     * @param elementName not used
     * @param parameters Parameters of the request and the template.
     * @param templateSelector Selector of the template tag to be displayed.
     * @return Bytearry containing the processed data of the template.
     * @throws Throws CmsException if something goes wrong.
     */

    public byte[] getContent(CmsObject cms, String templateFile, String elementName,
            Hashtable parameters, String templateSelector) throws CmsException {

        String error = "";
        boolean checkurl = true;

        String filename = null;
        String link = null;
        String foldername = null;
        String type = null;
        I_CmsSession session = cms.getRequestContext().getSession(true);

        // get the document to display
        CmsXmlWpTemplateFile xmlTemplateDocument = new CmsXmlWpTemplateFile(cms, templateFile);
        CmsXmlLanguageFile lang = xmlTemplateDocument.getLanguageFile();

        // clear session values on first load
        String initial = (String)parameters.get(C_PARA_INITIAL);
        if(initial != null){
            // remove all session values
            session.removeValue(C_PARA_FILE);
            session.removeValue(C_PARA_LINK);
            session.removeValue(C_PARA_VIEWFILE);
            session.removeValue(C_PARA_NAVPOS);
            session.removeValue(C_PARA_NAVTEXT);
            session.removeValue("lasturl");
        }
        // get the lasturl from parameters or from session
        String lastUrl = getLastUrl(cms, parameters);
        if(lastUrl != null){
            session.putValue("lasturl", lastUrl);
        }
        // get the linkname and the linkurl
        filename = cms.getRequestContext().getRequest().getParameter(C_PARA_FILE);
        if(filename != null) {
            filename = filename.trim();
            session.putValue(C_PARA_FILE, filename);
        }  else {
            // try to get the value from the session, e.g. after an error
            filename = (String)session.getValue(C_PARA_FILE)!=null?(String)session.getValue(C_PARA_FILE):"";
        }
        
        link = cms.getRequestContext().getRequest().getParameter(C_PARA_LINK);
        if(link != null) {
            link = link.trim();
            session.putValue(C_PARA_LINK, link);
        } else {
            // try to get the value from the session, e.g. after an error
            link = (String)session.getValue(C_PARA_LINK)!=null?(String)session.getValue(C_PARA_LINK):"";
        }
        
        // get the parameters
        String navtitle = (String)parameters.get(C_PARA_NAVTEXT);
        if(navtitle != null) {
            session.putValue(C_PARA_NAVTEXT, navtitle);
        } else {
            // try to get the value from the session, e.g. after an error
            navtitle = (String)session.getValue(C_PARA_NAVTEXT)!=null?(String)session.getValue(C_PARA_NAVTEXT):"";
        }
        
        String navpos = (String)parameters.get(C_PARA_NAVPOS);
        if(navpos != null) {
            session.putValue(C_PARA_NAVPOS, navpos);
        } else {
            // try to get the value from the session, e.g. after an error
            navpos = (String)session.getValue(C_PARA_NAVPOS)!=null?(String)session.getValue(C_PARA_NAVPOS):"";
        }
        
        String dummy = (String)parameters.get(CmsNewResourceLink.C_PARA_KEEP_PROPERTIES);
        if (DEBUG>0) System.out.println( "parameter " + CmsNewResourceLink.C_PARA_KEEP_PROPERTIES + ": " + dummy );
        boolean keepTargetProperties = false;
        if (dummy!=null) {
        	session.putValue(CmsNewResourceLink.C_PARA_KEEP_PROPERTIES, dummy);
        }
        else {
        	dummy = (String)session.getValue(CmsNewResourceLink.C_PARA_KEEP_PROPERTIES)!=null?(String)session.getValue(CmsNewResourceLink.C_PARA_KEEP_PROPERTIES):"true";
        }
		keepTargetProperties = dummy.trim().equalsIgnoreCase("true");
        
        dummy = (String)parameters.get(CmsNewResourceLink.C_PARA_ADD_TO_NAV);
        if (DEBUG>0) System.out.println( "parameter " + CmsNewResourceLink.C_PARA_ADD_TO_NAV + ": " + dummy );
        boolean addToNav = false;
        if (dummy!=null) {
        	session.putValue(CmsNewResourceLink.C_PARA_ADD_TO_NAV, dummy);
        }
        else {
        	dummy = (String)session.getValue(CmsNewResourceLink.C_PARA_ADD_TO_NAV)!=null?(String)session.getValue(CmsNewResourceLink.C_PARA_ADD_TO_NAV):"false";
        }
		addToNav = dummy.trim().equalsIgnoreCase("true");        
        
        String notChange = (String)parameters.get("newlink");
        
        CmsResource linkResource = null;
        String step = cms.getRequestContext().getRequest().getParameter("step");

        // set the values e.g. after an error
        xmlTemplateDocument.setData("LINKNAME", filename);
        xmlTemplateDocument.setData("LINKVALUE", link);
        xmlTemplateDocument.setData("NAVTITLE", Encoder.escapeHtml(navtitle));
        xmlTemplateDocument.setData("KEEPPROPERTIES", keepTargetProperties==true ? "true" : "false" );
        xmlTemplateDocument.setData("ADDTONAV", addToNav==true ? "true" : "false" );

        // if an existing link should be edited show the change page
        if(notChange != null && notChange.equals("false") && step == null) {
            try{
                CmsFile currentFile = cms.readFile(filename);
                String content = new String(currentFile.getContents());
                xmlTemplateDocument.setData("LINKNAME", currentFile.getName());
                xmlTemplateDocument.setData("LINK", currentFile.getAbsolutePath());
                xmlTemplateDocument.setData("LINKVALUE", content);
                templateSelector = "change";
            } catch (CmsException e){
                error = e.getShortException();
            }
        }

        // get the current phase of this wizard
        if(step != null) {
            // step 1 - show the final selection screen
            if(step.equals("1") || step.equals("2")) {
                try{
                    // step 1 - create the link with checking http-link
                    // step 2 - create the link without link check
                    // get folder- and filename
                    foldername = (String)session.getValue(C_PARA_FILELIST);
                    if(foldername == null) {
                        foldername = cms.rootFolder().getAbsolutePath();
                    }

                    String title = lang.getLanguageValue("explorer.linkto") + " " + link;
                    type = "link";
                    if(notChange != null && notChange.equals("false")) {

                        // change old file
                        CmsFile editFile = cms.readFile(filename);
                        String oldLink = new String( editFile.getContents() );
                        editFile.setContents(link.getBytes());

                        if(step.equals("1")){
                            if(!link.startsWith("/")){
                                checkurl = CmsLinkCheck.checkUrl(link);
                            }
                        }
                        if(checkurl){
                            cms.writeFile(editFile);
                            cms.writeProperty(filename, C_PROPERTY_TITLE, title);
                            
                            cms.doDecrementLinkCountForResource( oldLink );
                            cms.doIncrementLinkCountForResource( link );
                            cms.linkResourceToTarget( filename, link );
                        }
                        linkResource = (CmsResource)editFile;
                    } else {
                        // create the new file
                        Hashtable prop = new Hashtable();
                        prop.put(C_PROPERTY_TITLE, title);
                        if(step.equals("1")){
                            if(!link.startsWith("/")){
                                checkurl = CmsLinkCheck.checkUrl(link);
                            }
                        }
                        if(checkurl){
                            Map targetProperties = null;
                            
                            if (keepTargetProperties) {
                                try {
                                    targetProperties = cms.readProperties(link);
                                } 
                                catch (Exception e) {}
                            }
                            
                            linkResource = cms.createResource( foldername + filename, type, prop, link.getBytes(), targetProperties );
                        }
                    }
                    // now check if navigation informations have to be added to the new page.
                    if(addToNav && checkurl) {
                        cms.writeProperty(linkResource.getAbsolutePath(), C_PROPERTY_NAVTEXT, navtitle);
                        // update the navposition.
                        if(navpos != null) {
                            updateNavPos(cms, linkResource, navpos);
                        }
                    }

                    // remove values from session
                    session.removeValue(C_PARA_FILE);
                    session.removeValue(C_PARA_VIEWFILE);
                    session.removeValue(C_PARA_LINK);
                    session.removeValue(C_PARA_NAVTEXT);
                    session.removeValue(C_PARA_NAVPOS);

                    // now return to appropriate filelist
                } catch (CmsException e){
                    error = e.getShortException();
                }

                if(checkurl && ("".equals(error.trim()))){
                    try {
                        if(lastUrl != null) {
                            cms.getRequestContext().getResponse().sendRedirect(lastUrl);
                        } else {
                            cms.getRequestContext().getResponse().sendCmsRedirect(getConfigFile(cms).getWorkplaceActionPath()
                                    + C_WP_EXPLORER_FILELIST);
                        }
                    } catch(Exception e) {
                        throw new CmsException("Redirect fails :" + getConfigFile(cms).getWorkplaceActionPath()
                            + C_WP_EXPLORER_FILELIST, CmsException.C_UNKNOWN_EXCEPTION, e);
                    }
                    return null;
                }
            }
        } else {
            session.removeValue(C_PARA_FILE);
            session.removeValue(C_PARA_VIEWFILE);
            session.removeValue(C_PARA_LINK);
            session.removeValue(C_PARA_NAVTEXT);