cmsxmltemplatefile.java

内容管理

/*
* File   : $Source: /usr/local/cvs/opencms/src/com/opencms/template/CmsXmlTemplateFile.java,v $
* Date   : $Date: 2003/04/09 14:04:04 $
* Version: $Revision: 1.69 $
*
* 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.template;

import com.opencms.boot.I_CmsLogChannels;
import com.opencms.core.A_OpenCms;
import com.opencms.core.CmsException;
import com.opencms.core.I_CmsRequest;
import com.opencms.core.OpenCms;
import com.opencms.file.CmsFile;
import com.opencms.file.CmsObject;
import com.opencms.flex.util.CmsStringSubstitution;
import com.opencms.template.cache.CmsElementLink;
import com.opencms.template.cache.CmsElementVariant;
import com.opencms.template.cache.CmsMethodLink;
import com.opencms.util.LinkSubstitution;
import com.opencms.workplace.I_CmsWpConstants;

import java.io.OutputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Hashtable;
import java.util.Vector;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 * Content definition for XML template files.
 *
 * @author Alexander Lucas
 * @version $Revision: 1.69 $ $Date: 2003/04/09 14:04:04 $
 */
public class CmsXmlTemplateFile extends A_CmsXmlContent implements I_CmsWpConstants {

    /** Name of the tag for the editable templates */
    public static final String C_EDIT_TEMPLATE = "edittemplate";

    /** Name of the tag for the templates */
    public static final String C_TEMPLATE = "template";

    /**
     * Default constructor.
     */
    public CmsXmlTemplateFile() throws CmsException {
        if(OpenCms.getOnlineElementCache() == null){
            registerTag("ELEMENT", CmsXmlTemplateFile.class, "handleElementTag", C_REGISTER_MAIN_RUN);
        }
    }

    /**
     * Constructor for creating a new object containing the content
     * of the given filename.
     *
     * @param cms CmsObject object for accessing system resources.
     * @param filename Name of the body file that shoul be read.
     */
    public CmsXmlTemplateFile(CmsObject cms, CmsFile file) throws CmsException {
        super();
        if(!cms.getRequestContext().isElementCacheEnabled()) {
            registerMyTags();
        }
        init(cms, file);
    }

    /**
     * Constructor for creating a new object containing the content
     * of the given filename.
     *
     * @param cms CmsObject object for accessing system resources.
     * @param filename Name of the body file that shoul be read.
     */
    public CmsXmlTemplateFile(CmsObject cms, String filename) throws CmsException {
        super();
        if(!cms.getRequestContext().isElementCacheEnabled()) {
            registerMyTags();
        }
        init(cms, filename);
    }
    public int createNewSection(String sectionName) {
        int loop = 2;
        String tempName = sectionName + loop;
        while(hasData("template." + tempName)) {
            tempName = sectionName + (++loop);
        }
        Element newData = getXmlDocument().createElement("template");
        newData.setAttribute("name", tempName);
        setData("template." + tempName, newData);
        // and now create the section for the editor
        Element newEditData = getXmlDocument().createElement(C_EDIT_TEMPLATE);
        newEditData.setAttribute("name", tempName);
        setData(C_EDIT_TEMPLATE + "."+ tempName, newEditData);
        return loop;
    }
    public Vector getAllSections() throws CmsException {
        NodeList nl = ((Element)getXmlDocument().getDocumentElement()).getChildNodes();
        return getNamesFromNodeList(nl, "TEMPLATE", true);
    }

    /**
     * This method is used by the linkmanagement. It returns a Vector with all
     * link tag values in all TEMPLATE sections of the document.
     */
    public Vector getAllLinkTagValues()throws CmsException{
        Vector retValue = new Vector();
        NodeList list = ((Element)getXmlDocument().getDocumentElement()).getChildNodes();
        int numElements = list.getLength();
        for(int i=0; i < numElements; i++){
            Node n = (Node)list.item(i);
            // we only search in the template tags
            if(n.getNodeType() == Node.ELEMENT_NODE && n.getNodeName().toLowerCase().equals(C_TEMPLATE)){
                NodeList subList = n.getChildNodes();
                for(int j=0; j<subList.getLength(); j++){
                    Node subNode = (Node)subList.item(j);
                    if(subNode.getNodeType()==Node.ELEMENT_NODE && subNode.getNodeName().equalsIgnoreCase("link")){
                        // TODO: check firstChild null?
                        String value = subNode.getFirstChild().getNodeValue();
                        if(!retValue.contains(value)){
                            retValue.add(value);
                        }
                    }
                }
            }
        }

        return retValue;
    }

    /**
     * Gets an enumeration of all used subelements in all sections of
     * of this template file.
     * @return Vector of all subtemplate names.
     * @throws CmsException
     */
    public Vector getAllSubElements() throws CmsException {
        NodeList nl = getXmlDocument().getDocumentElement().getElementsByTagName("*");
        return getNamesFromNodeList(nl, "ELEMENT", false);
    }

    /**
     * Gets an enumeration of all subelements defined in all sections of
     * of this template file.
     * @return Vector of all subtemplate names.
     * @throws CmsException
     */
    public Vector getAllSubElementDefinitions() throws CmsException {
        NodeList nl = getXmlDocument().getDocumentElement().getElementsByTagName("*");
        return getNamesFromNodeList(nl, "ELEMENTDEF", false);
    }

    /**
     * Gets an enumeration of all used subelements in the given section
     * of a template file.
     * @param selector Section to be scanned for subelements
     * @return Vector of all subtemplate names.
     * @throws CmsException
     */
    public Vector getAllSubElements(String selector) throws CmsException {
        String templateDatablockName = getTemplateDatablockName(selector);
        Element templateElement = getData(templateDatablockName);
        NodeList nl = templateElement.getChildNodes();
        return getNamesFromNodeList(nl, "ELEMENT", false);
    }
    public Element getBodyTag() throws CmsException {
        Element result = null;
        if(hasData("bodyTag")) {
            result = getData("bodytag");
        }
        else {
            if(I_CmsLogChannels.C_LOGGING && A_OpenCms.isLogging(I_CmsLogChannels.C_OPENCMS_DEBUG) ) {
                A_OpenCms.log(C_OPENCMS_DEBUG, getClassName() + "Cannot find \"bodytag\" tag in XML template file " + getFilename() + ".");
            }
        }
        return result;
    }

    /**
     * Gets a description of this content type.
     * @return Content type description.
     */
    public String getContentDescription() {
        return "OpenCms XML template file";
    }

    /**
     * Gets a complete datablock from the datablock hashtable.
     *
     * @param tag Key for the datablocks hashtable.
     * @return Complete DOM element of the datablock for the given key
     * or null if no datablock is found for this key.
     */
    public Element getData(String tag) throws CmsException {
        return super.getData(tag);
    }

    /**
     * Gets the text and CDATA content of a datablock from the
     * datablock hashtable.
     *
     * @param tag Key for the datablocks hashtable.
     * @return Datablock content for the given key or null if no datablock
     * is found for this key.
     */
    public String getDataValue(String tag) throws CmsException {
        return super.getDataValue(tag);
    }

    public String getEditableTemplateContent(Object callingObject, Hashtable parameters, String templateSelector, boolean html, String style) throws CmsException {
        Vector cdatas = new Vector();
        String editDatablockName = this.getEditTemplateDatablockName(templateSelector);
        String datablockName = null;
        String testValue = getDataValue(editDatablockName);
        // if the editDatablock is empty (or not there) this seems to be an old template,
        // so we use the original file
        if(testValue == null || "".equals(testValue)){
            datablockName = this.getTemplateDatablockName(templateSelector);
        }else{
            datablockName = editDatablockName;
        }
        Element data = getData(datablockName);
        StringBuffer result = new StringBuffer();
        if(style == null) {
            style = "";
        }
        Document tempDoc = (Document)getXmlDocument().cloneNode(true);
        Element rootElem = tempDoc.getDocumentElement();
        while(rootElem.hasChildNodes()) {
            rootElem.removeChild(rootElem.getFirstChild());
        }
        data = (Element)getXmlParser().importNode(tempDoc, data);
        rootElem.appendChild(data);
        if(html) {
            // Scan for cdatas
            Node n = data;
            while(n != null) {
                if(n.getNodeType() == Node.CDATA_SECTION_NODE) {
                    cdatas.addElement(n.getNodeValue());
                    n.setNodeValue("");
                }
                n = treeWalker(rootElem, n);
            }
        }
        StringWriter out = new StringWriter();
        getXmlParser().getXmlText(tempDoc, out);
        String xmlString = out.toString();
        int endOpeningXmlTag = xmlString.indexOf(">");
        int endOpeningDocTag = xmlString.indexOf(">", endOpeningXmlTag + 1);