| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| *******************************************************************************/ |
| package org.apache.ofbiz.widget.renderer.macro; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.util.Map; |
| |
| import javax.servlet.ServletContext; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import javax.xml.parsers.ParserConfigurationException; |
| |
| import org.apache.ofbiz.base.util.Debug; |
| import org.apache.ofbiz.base.util.GeneralException; |
| import org.apache.ofbiz.base.util.UtilCodec; |
| import org.apache.ofbiz.base.util.UtilHttp; |
| import org.apache.ofbiz.base.util.UtilValidate; |
| import org.apache.ofbiz.base.util.collections.MapStack; |
| import org.apache.ofbiz.webapp.view.AbstractViewHandler; |
| import org.apache.ofbiz.webapp.view.ViewHandlerException; |
| import org.apache.ofbiz.widget.model.ModelTheme; |
| import org.apache.ofbiz.widget.renderer.FormStringRenderer; |
| import org.apache.ofbiz.widget.renderer.MenuStringRenderer; |
| import org.apache.ofbiz.widget.renderer.ScreenRenderer; |
| import org.apache.ofbiz.widget.renderer.ScreenStringRenderer; |
| import org.apache.ofbiz.widget.renderer.TreeStringRenderer; |
| import org.apache.ofbiz.widget.renderer.VisualTheme; |
| import org.xml.sax.SAXException; |
| |
| import freemarker.template.TemplateException; |
| import freemarker.template.utility.StandardCompress; |
| |
| public class MacroScreenViewHandler extends AbstractViewHandler { |
| |
| private static final String MODULE = MacroScreenViewHandler.class.getName(); |
| |
| private ServletContext servletContext = null; |
| |
| @Override |
| public void init(ServletContext context) throws ViewHandlerException { |
| this.servletContext = context; |
| } |
| |
| private ScreenStringRenderer loadRenderers(HttpServletRequest request, HttpServletResponse response, |
| Map<String, Object> context, Writer writer) throws TemplateException, IOException { |
| VisualTheme visualTheme = UtilHttp.getVisualTheme(request); |
| ModelTheme modelTheme = visualTheme.getModelTheme(); |
| |
| String screenMacroLibraryPath = modelTheme.getScreenRendererLocation(getName()); |
| String formMacroLibraryPath = modelTheme.getFormRendererLocation(getName()); |
| String treeMacroLibraryPath = modelTheme.getTreeRendererLocation(getName()); |
| String menuMacroLibraryPath = modelTheme.getMenuRendererLocation(getName()); |
| ScreenStringRenderer screenStringRenderer = new MacroScreenRenderer(modelTheme.getType(getName()), screenMacroLibraryPath); |
| if (UtilValidate.isNotEmpty(formMacroLibraryPath)) { |
| FormStringRenderer formStringRenderer = new MacroFormRenderer(formMacroLibraryPath, request, response); |
| context.put("formStringRenderer", formStringRenderer); |
| } |
| if (UtilValidate.isNotEmpty(treeMacroLibraryPath)) { |
| TreeStringRenderer treeStringRenderer = new MacroTreeRenderer(treeMacroLibraryPath, writer); |
| context.put("treeStringRenderer", treeStringRenderer); |
| } |
| if (UtilValidate.isNotEmpty(menuMacroLibraryPath)) { |
| MenuStringRenderer menuStringRenderer = new MacroMenuRenderer(menuMacroLibraryPath, request, response); |
| context.put("menuStringRenderer", menuStringRenderer); |
| } |
| return screenStringRenderer; |
| } |
| |
| @Override |
| public void render(String name, String page, String info, String contentType, String encoding, HttpServletRequest request, |
| HttpServletResponse response) throws ViewHandlerException { |
| try { |
| Writer writer = response.getWriter(); |
| VisualTheme visualTheme = UtilHttp.getVisualTheme(request); |
| ModelTheme modelTheme = visualTheme.getModelTheme(); |
| // compress output if configured to do so |
| if (UtilValidate.isEmpty(encoding)) { |
| encoding = modelTheme.getEncoding(getName()); |
| } |
| boolean compressOutput = "compressed".equals(encoding); |
| if (!compressOutput) { |
| compressOutput = "true".equals(modelTheme.getCompress(getName())); |
| } |
| if (!compressOutput && this.servletContext != null) { |
| compressOutput = "true".equals(this.servletContext.getAttribute("compressHTML")); |
| } |
| if (compressOutput) { |
| // StandardCompress defaults to a 2k buffer. That could be increased |
| // to speed up output. |
| writer = new StandardCompress().getWriter(writer, null); |
| } |
| MapStack<String> context = MapStack.create(); |
| ScreenRenderer.populateContextForRequest(context, null, request, response, servletContext); |
| ScreenStringRenderer screenStringRenderer = loadRenderers(request, response, context, writer); |
| ScreenRenderer screens = new ScreenRenderer(writer, context, screenStringRenderer); |
| context.put("screens", screens); |
| context.put("simpleEncoder", UtilCodec.getEncoder(visualTheme.getModelTheme().getEncoder(getName()))); |
| screenStringRenderer.renderBegin(writer, context); |
| screens.render(page); |
| screenStringRenderer.renderEnd(writer, context); |
| writer.flush(); |
| } catch (TemplateException e) { |
| Debug.logError(e, "Error initializing screen renderer", MODULE); |
| throw new ViewHandlerException(e.getMessage()); |
| } catch (IOException e) { |
| throw new ViewHandlerException("Error in the response writer/output stream: " + e.toString(), e); |
| } catch (SAXException | ParserConfigurationException e) { |
| throw new ViewHandlerException("XML Error rendering page: " + e.toString(), e); |
| } catch (GeneralException e) { |
| throw new ViewHandlerException("Lower level error rendering page: " + e.toString(), e); |
| } |
| } |
| } |