cmsxmltemplate.java

java 编写的程序

        else {
            if(templateFile.hasData("stylesheet")) {
                styleNS = templateFile.getDataValue("stylesheet");
            }
            else {
                styleNS = "";
            }
        }
        HttpServletRequest orgReq = (HttpServletRequest)cms.getRequestContext().getRequest().getOriginalRequest();
        String servletPath = cms.getRequestContext().getRequest().getServletUrl() + "/";

        // Get the user's browser
        String browser = orgReq.getHeader("user-agent");
        if(browser == null) {

            // the browser is unknown - return the ns-style
            return styleNS;
        }
        if(browser.indexOf("MSIE") > -1) {
            return servletPath + styleIE;
        }
        else {
            return servletPath + styleNS;
        }
    }

    /**
     * Find the corresponding template class to be loaded.
     * this should be defined in the template file of the parent
     * template and can be overwritten in the body file.
     *
     * @param elementName Element name of this template in our parent template.
     * @param doc CmsXmlTemplateFile object of our template file including a subtemplate.
     * @param parameters Hashtable with all template class parameters.
     * @return Name of the class that should generate the output for the included template file.
     */
    protected String getTemplateClassName(String elementName, CmsXmlTemplateFile doc, Hashtable parameters) throws CmsException {
        String result = null;
        if(parameters.containsKey(elementName + "._CLASS_")) {
            result = (String)parameters.get(elementName + "._CLASS_");
        }else {
            if(doc.hasSubtemplateClass(elementName)) {
                result = doc.getSubtemplateClass(elementName);
            }else {

                // Fallback to "body" element
                if(parameters.containsKey("body._CLASS_")) {
                    result = (String)parameters.get("body._CLASS_");
                }
            }
        }
        if(result == null){
            CmsElementDefinitionCollection elDefs = (CmsElementDefinitionCollection)parameters.get("_ELDEFS_");
            if(elDefs != null){
                CmsElementDefinition elDef = elDefs.get(elementName);
                if(elDef != null){
                    result = elDef.getClassName();
                }
            }
        }
        return result;
    }

    /**
     * Find the corresponding template file to be loaded by the template class.
     * this should be defined in the template file of the parent
     * template and can be overwritten in the body file.
     *
     * @param elementName Element name of this template in our parent template.
     * @param doc CmsXmlTemplateFile object of our template file including a subtemplate.
     * @param parameters Hashtable with all template class parameters.
     * @return Name of the template file that should be included.
     */
    protected String getTemplateFileName(String elementName, CmsXmlTemplateFile doc, Hashtable parameters) throws CmsException {
        String result = null;
        if(parameters.containsKey(elementName + "._TEMPLATE_")) {
            result = (String)parameters.get(elementName + "._TEMPLATE_");
        }else {
            if(doc.hasSubtemplateFilename(elementName)) {
                result = doc.getSubtemplateFilename(elementName);
            }else {
                // Fallback to "body" element
                if(parameters.containsKey("body._TEMPLATE_")) {
                    result = (String)parameters.get("body._TEMPLATE_");
                }
            }
        }
        if(result == null){
            CmsElementDefinitionCollection elDefs = (CmsElementDefinitionCollection)parameters.get("_ELDEFS_");
            if(elDefs != null){
                CmsElementDefinition elDef = elDefs.get(elementName);
                if(elDef != null){
                    result = elDef.getTemplateName();
                }
            }
        }
        return result;
    }

    /**
     * Find the corresponding template selector to be activated.
     * This may be defined in the template file of the parent
     * template and can be overwritten in the body file.
     *
     * @param elementName Element name of this template in our parent template.
     * @param doc CmsXmlTemplateFile object of our template file including a subtemplate.
     * @param parameters Hashtable with all template class parameters.
     * @return Name of the class that should generate the output for the included template file.
     */
    protected String getTemplateSelector(String elementName, CmsXmlTemplateFile doc, Hashtable parameters) throws CmsException {
        if(parameters.containsKey(elementName + "._TEMPLATESELECTOR_")) {
            return (String)parameters.get(elementName + "._TEMPLATESELECTOR_");
        }
        else {
            if(doc.hasSubtemplateSelector(elementName)) {
                return doc.getSubtemplateSelector(elementName);
            }
            else {
                CmsElementDefinitionCollection elDefs = (CmsElementDefinitionCollection)parameters.get("_ELDEFS_");
                if(elDefs != null){
                    CmsElementDefinition elDef = elDefs.get(elementName);
                    if(elDef != null){
                        return elDef.getTemplateSelector();
                    }
                }
                return null;
            }
        }
    }

    /**
     * Inserts the correct document title into the template.
     * <P>
     * This method can be called using <code>&lt;METHOD name="getTitle"&gt;</code>
     * in the template file.
     *
     * @param cms CmsObject Object for accessing system resources.
     * @param tagcontent Unused in this special case of a user method. Can be ignored.
     * @param doc Reference to the A_CmsXmlContent object of the initiating XLM document.
     * @param userObj Hashtable with parameters.
     * @return String or byte[] with the content of this subelement.
     * @exception CmsException
     */
    public Object getTitle(CmsObject cms, String tagcontent, A_CmsXmlContent doc, Object userObject) throws CmsException {
        String requestedUri = cms.getRequestContext().getUri();
        String title = cms.readProperty(requestedUri, C_PROPERTY_TITLE);
        if(title == null) {
            title = "";
        }
        return title;
    }

    /**
     * Inserts the correct document description into the template.
     * <P>
     * This method can be called using <code>&lt;METHOD name="getDescription"&gt;</code>
     * in the template file.
     *
     * @param cms CmsObject Object for accessing system resources.
     * @param tagcontent Unused in this special case of a user method. Can be ignored.
     * @param doc Reference to the A_CmsXmlContent object of the initiating XLM document.
     * @param userObj Hashtable with parameters.
     * @return String or byte[] with the content of this subelement.
     * @exception CmsException
     */
    public Object getDescription(CmsObject cms, String tagcontent, A_CmsXmlContent doc, Object userObject) throws CmsException {
        String requestedUri = cms.getRequestContext().getUri();
        String description = cms.readProperty(requestedUri, C_PROPERTY_DESCRIPTION);
        if(description == null) {
            description = "";
        }
        return description;
    }

    /**
     * Inserts the value of the given property in the template.
     * <P>
     * This method can be called using <code>&lt;METHOD name="getProperty"&gt;</code>
     * in the template file.
     *
     * @param cms CmsObject Object for accessing system resources.
     * @param tagcontent The name of the property.
     * @param doc Reference to the A_CmsXmlContent object of the initiating XLM document.
     * @param userObj Hashtable with parameters.
     * @return String or byte[] with the content of this subelement.
     * @exception CmsException
     */
    public Object getProperty(CmsObject cms, String tagcontent, A_CmsXmlContent doc, Object userObject) throws CmsException {
        String requestedUri = cms.getRequestContext().getUri();
        String value = "";
        try{
            value = cms.readProperty(requestedUri, tagcontent);
        }catch(Exception e){
            if(I_CmsLogChannels.C_PREPROCESSOR_IS_LOGGING && A_OpenCms.isLogging()) {
                A_OpenCms.log(C_OPENCMS_INFO, "[CmsXmlTemplate] usermethod getProperty throwed an Exception getting "+
                        tagcontent+": "+e.toString());
            }
        }
        if(value == null) {
            value = "";
        }
        return value;
    }

    /**
     * Inserts the correct document keyword into the template.
     * <P>
     * This method can be called using <code>&lt;METHOD name="getKeywords"&gt;</code>
     * in the template file.
     *
     * @param cms CmsObject Object for accessing system resources.
     * @param tagcontent Unused in this special case of a user method. Can be ignored.
     * @param doc Reference to the A_CmsXmlContent object of the initiating XLM document.
     * @param userObj Hashtable with parameters.
     * @return String or byte[] with the content of this subelement.
     * @exception CmsException
     */
    public Object getKeywords(CmsObject cms, String tagcontent, A_CmsXmlContent doc, Object userObject) throws CmsException {
        String requestedUri = cms.getRequestContext().getUri();
        String keywords = cms.readProperty(requestedUri, C_PROPERTY_KEYWORDS);
        if(keywords == null) {
            keywords = "";
        }
        return keywords;
    }

    /**
     * @param cms CmsObject Object for accessing system resources.
     * @param tagcontent May contain the parameter for framesets to work in the static export.
     * @param doc Reference to the A_CmsXmlContent object of the initiating XLM document.
     * @param userObj Hashtable with parameters.
     * @return String or byte[] with the content of this subelement.
     * @exception CmsException
     */
    public Object getUri(CmsObject cms, String tagcontent, A_CmsXmlContent doc, Object userObject) throws CmsException {
        String res = cms.getRequestContext().getUri();
        if(tagcontent == null || "".equals(tagcontent)){
            return (cms.getLinkSubstitution(res)).getBytes();
        }else{
            return (cms.getLinkSubstitution(res+"?"+tagcontent)).getBytes();
        }
    }

    /**
     * @param cms CmsObject Object for accessing system resources.
     * @param tagcontent Contains the parameter for framesets.
     * @param doc Reference to the A_CmsXmlContent object of the initiating XLM document.
     * @param userObj Hashtable with parameters.
     * @return String or byte[] with the content of this subelement.
     * @exception CmsException
     */
    public Object getUriWithParameter(CmsObject cms, String tagcontent, A_CmsXmlContent doc, Object userObject) throws CmsException{

        String query = new String();
        // get the parameternames of the original request and get the values from the userObject
        try{
            Enumeration parameters = null;
            if(cms.getMode() == cms.C_MODUS_EXPORT){
                parameters = cms.getRequestContext().getRequest().getParameterNames();
            }else{
                parameters = ((HttpServletRequest)cms.getRequestContext().getRequest().getOriginalRequest()).getParameterNames();
            }
            StringBuffer paramQuery = new StringBuffer();
            while(parameters.hasMoreElements()){
                String name = (String)parameters.nextElement();
                String value = (String)((Hashtable)userObject).get(name);
                if(value != null && !"".equals(value)){
                    paramQuery.append(name+"="+value+"&");
                }
            }
            if(paramQuery.length() > 0){
                // add the parameters to the query string