cmschanneltree.java

内容管理

            }
            catch(CmsException e) {
                // no icon was found, so use the default
                icon = C_ICON_DEFAULT;
                m_iconCache.put(type.getResourceTypeName(), icon);
            }
        }
        return icon;
    }

    /**
     * Creates the folder tree i.
     * @throws Throws CmsException if something goes wrong.
     */

    public Object getTree(CmsObject cms, String tagcontent, A_CmsXmlContent doc, Object userObj) throws CmsException {

        StringBuffer output = new StringBuffer();
        I_CmsSession session = cms.getRequestContext().getSession(true);
        CmsXmlWpConfigFile configFile = this.getConfigFile(cms);
        String foldername = null;
        String filelist = null;
        String currentFolder;
        String currentFilelist;
        String rootFolder;
        String files = null;
        boolean displayFiles = false;
        boolean enableOnlineFiles = false;

        //check if a folder parameter was included in the request.

        // if a foldername was included, overwrite the value in the session for later use.
        foldername = cms.getRequestContext().getRequest().getParameter(C_PARA_FOLDERTREE);
        if(foldername != null) {
            session.putValue(C_PARA_FOLDERTREE, foldername);
        }

        // get the current folder to be displayed as maximum folder in the tree.
        currentFolder = (String)session.getValue(C_PARA_FOLDERTREE);
        if(currentFolder == null) {
            currentFolder = cms.rootFolder().getAbsolutePath();
        }

        // get the current folder to be displayed as maximum folder in the tree.
        currentFilelist = (String)session.getValue(C_PARA_FILELIST);
        if(currentFilelist == null) {
            currentFilelist = cms.rootFolder().getAbsolutePath();
        }

        // check if the files must be displayed as well
        files = (String)session.getValue(C_PARA_VIEWFILE);
        if(files != null) {
            displayFiles = true;
        }
        // check if the onlineresources are selectable
        String offselect = (String)session.getValue("onlineselect_in_foldertree");
        if(offselect != null){
            enableOnlineFiles = true;
        }

        // get current and root folder
        rootFolder = cms.rootFolder().getAbsolutePath();

        //get the template
        CmsXmlWpTemplateFile template = (CmsXmlWpTemplateFile)doc;
        if(filelist != null) {
            template.setData("PREVIOUS", filelist);
        }
        else {
            template.setData("PREVIOUS", currentFilelist);
        }
        String tab = template.getProcessedDataValue(C_TREEIMG_EMPTY0, this);

        showTree(cms, rootFolder, currentFolder, currentFilelist, template, output, tab,
                displayFiles, enableOnlineFiles, configFile);
        return output.toString();
    }

    /**
     * Indicates if the results of this class are cacheable.
     *
     * @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 cacheable, <EM>false</EM> otherwise.
     */

    public boolean isCacheable(CmsObject cms, String templateFile, String elementName,
            Hashtable parameters, String templateSelector) {
        return false;
    }

    /**
     * Generates a subtree of the folder tree.
     * @param cms The CmsObject.
     * @param curFolder The rootfolder of ther subtree to display
     * @param endfolder The last folder to be displayed.
     * @param filelist The folder that is displayed in the file list
     * @param template The foldertree template file.
     * @param output The output buffer where all data is written to.
     * @param tab The prefix-HTML code fo this subtree.
     * @param displayFiles Flag to signal if to display the files as well.
     */

    private void showTree(CmsObject cms, String curfolder, String endfolder, String filelist,
            CmsXmlWpTemplateFile template, StringBuffer output, String tab,
            boolean displayFiles, boolean offselect, CmsXmlWpConfigFile configFile) throws CmsException {
        String newtab = new String();
        String folderimg = new String();
        String treeswitch = new String();
        CmsResource lastFolder = null;
        Vector subfolders = new Vector();
        Vector list = new Vector();
        Vector untestedSubfolders = new Vector();
        Vector untestedSubfiles = new Vector();

        // set the channel root
        cms.setContextToCos();
        Vector untestedlist = cms.getSubFolders(curfolder);
        // remove invisible folders
        for(int i = 0;i < untestedlist.size();i++) {
            CmsFolder subfolder = (CmsFolder)untestedlist.elementAt(i);
            if(checkAccess(cms, subfolder)) {
                list.addElement(subfolder);
            }
        }

        // load the files as well if nescessary
        if(displayFiles) {
            Vector untestedfileslist = cms.getFilesInFolder(curfolder);
            for(int i = 0;i < untestedfileslist.size();i++) {
                CmsFile file = (CmsFile)untestedfileslist.elementAt(i);
                if(checkAccess(cms, file)) {
                    list.addElement(file);
                }
            }
        }
        Enumeration enum = list.elements();
        if(list.size() > 0) {
            lastFolder = (CmsResource)list.lastElement();
        }
        else {
            lastFolder = null;
        }

        //CmsFolder folder=null;
        while(enum.hasMoreElements()) {
            CmsResource res = (CmsResource)enum.nextElement();
            //CmsFolder folder=(CmsFolder)enum.nextElement();
            // check if this folder is visible
            if(checkAccess(cms, (CmsResource)res)) {
                subfolders = new Vector();
                if(res.isFolder()) {
                    untestedSubfolders = cms.getSubFolders(res.getAbsolutePath());

                    // now filter all invisible subfolders
                    for(int i = 0;i < untestedSubfolders.size();i++) {
                        CmsFolder subfolder = (CmsFolder)untestedSubfolders.elementAt(i);
                        if(checkAccess(cms, subfolder)) {
                            subfolders.addElement(subfolder);
                        }
                    }

                    // load the files as well if nescessary
                    if(displayFiles) {
                        untestedSubfiles = cms.getFilesInFolder(res.getAbsolutePath());
                        for(int i = 0;i < untestedSubfiles.size();i++) {
                            CmsFile subfile = (CmsFile)untestedSubfiles.elementAt(i);
                            if(checkAccess(cms, subfile)) {
                                subfolders.addElement(subfile);
                            }
                        }
                    }
                }

                // check if this folder must diplayes open
                if(res.isFolder()) {
                    if(res.getAbsolutePath().equals(filelist)) {
                        folderimg = template.getProcessedDataValue(C_TREEIMG_FOLDEROPEN, this);
                    }
                    else {
                        folderimg = template.getProcessedDataValue(C_TREEIMG_FOLDERCLOSE, this);
                    }
                }
                else {
                    I_CmsResourceType type = cms.getResourceType(res.getType());
                    String icon = getIcon(cms, type, configFile);
                    template.setData("icon", cms.getRequestContext().getRequest().getServletUrl() + configFile.getWpPicturePath() + icon);
                    folderimg = template.getProcessedDataValue("TREEIMG_FILE", this);
                }

                // now check if a treeswitch has to displayed

                // is this the last element of the current folder, so display the end image
                if(res.getAbsolutePath().equals(lastFolder.getAbsolutePath())) {

                    // if there are any subfolders extisintg, use the + or - box
                    if(subfolders.size() > 0) {

                        // test if the + or minus must be displayed
                        if(endfolder.startsWith(res.getAbsolutePath())) {
                            template.setData(C_TREELINK, C_WP_CHANNEL_TREE + "?" + C_PARA_FOLDERTREE
                                    + "=" + Encoder.escape(curfolder,
                                    cms.getRequestContext().getEncoding()));
                            treeswitch = template.getProcessedDataValue(C_TREEIMG_MEND, this);
                        }
                        else {
                            template.setData(C_TREELINK, C_WP_CHANNEL_TREE + "?" + C_PARA_FOLDERTREE
                                    + "=" + Encoder.escape(res.getAbsolutePath(),
                                    cms.getRequestContext().getEncoding()));
                            treeswitch = template.getProcessedDataValue(C_TREEIMG_PEND, this);
                        }
                    }
                    else {
                        treeswitch = template.getProcessedDataValue(C_TREEIMG_END, this);
                    }
                }
                else {
                    // use the cross image
                    // if there are any subfolders extisintg, use the + or - box
                    if(subfolders.size() > 0) {

                        // test if the + or minus must be displayed
                        if(endfolder.startsWith(res.getAbsolutePath())) {
                            template.setData(C_TREELINK, C_WP_CHANNEL_TREE + "?" + C_PARA_FOLDERTREE
                                    + "=" + Encoder.escape(curfolder,
                                    cms.getRequestContext().getEncoding()));
                            treeswitch = template.getProcessedDataValue(C_TREEIMG_MCROSS, this);
                        }
                        else {
                            template.setData(C_TREELINK, C_WP_CHANNEL_TREE + "?" + C_PARA_FOLDERTREE
                                    + "=" + Encoder.escape(res.getAbsolutePath(),
                                    cms.getRequestContext().getEncoding()));
                            treeswitch = template.getProcessedDataValue(C_TREEIMG_PCROSS, this);
                        }
                    }
                    else {
                        treeswitch = template.getProcessedDataValue(C_TREEIMG_CROSS, this);
                    }
                }
                if(res.getAbsolutePath().equals(lastFolder.getAbsolutePath())) {
                    newtab = tab + template.getProcessedDataValue(C_TREEIMG_EMPTY, this);
                }
                else {
                    newtab = tab + template.getProcessedDataValue(C_TREEIMG_VERT, this);
                }

                // test if the folder is in the current project
                if(res.inProject(cms.getRequestContext().currentProject())) {
                    template.setData(C_TREESTYLE, C_FILE_INPROJECT);
                }
                else {
                    template.setData(C_TREESTYLE, C_FILE_NOTINPROJECT);
                }

                // set all data for the treeline tag
                template.setData(C_FILELIST, C_WP_EXPLORER_FILELIST + "?" + C_PARA_FILELIST
                        + "=" + res.getAbsolutePath());
                template.setData(C_TREELIST, C_WP_EXPLORER_TREE + "?" + C_PARA_FILELIST
                        + "=" + res.getAbsolutePath());
                template.setData(C_TREEENTRY, res.getName());
                template.setData(C_TREEVAR, res.getAbsolutePath());
                template.setData(C_TREETAB, tab);
                template.setData(C_TREEFOLDER, folderimg);
                template.setData(C_TREESWITCH, treeswitch);

                // test if the folder is in the current project and if the user has

                // write access to this folder.
                if((res.inProject(cms.getRequestContext().currentProject()) && checkWriteable(cms,
                        (CmsResource)res)) || offselect) {
                    template.setData(C_TREESTYLE, C_FILE_INPROJECT);
                    output.append(template.getProcessedDataValue(C_TREELINE, this));
                } else {
                    template.setData(C_TREESTYLE, C_FILE_NOTINPROJECT);
                    output.append(template.getProcessedDataValue(C_TREELINEDISABLED, this));
                }

                //finally process all subfolders if nescessary
                if((endfolder.startsWith(res.getAbsolutePath())) && (endfolder.endsWith("/"))) {
                    showTree(cms, res.getAbsolutePath(), endfolder, filelist, template,
                            output, newtab, displayFiles, offselect, configFile);
                }
            }
        }
        // set the vfs root
        cms.setContextToVfs();
    }
}