001/* 002 * (C) Copyright 2014 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Anahide Tchertchian 018 */ 019package org.nuxeo.ecm.platform.ui.web.application; 020 021import java.io.ByteArrayInputStream; 022import java.io.IOException; 023import java.io.InputStream; 024import java.net.MalformedURLException; 025import java.net.URL; 026import java.net.URLConnection; 027import java.net.URLStreamHandler; 028 029import javax.faces.application.ViewResource; 030 031import org.apache.commons.text.StringEscapeUtils; 032import org.nuxeo.runtime.api.Framework; 033import org.apache.commons.logging.Log; 034import org.apache.commons.logging.LogFactory; 035 036/** 037 * Resource representing a facelet that is not found in this application. 038 * <p> 039 * This is used to avoid crashing triggering an exception when a facelet resource is missing. 040 * <p> 041 * Instead, a message referencing the missing resource is displayed in red and in bold where the facelet would have been 042 * included. 043 * 044 * @since 6.0 045 */ 046public class NuxeoUnknownResource extends ViewResource { 047 048 public static final String MARKER = NuxeoUnknownResource.class.getName(); 049 050 public static final String PLACEHOLDER = "/facelet_not_found.xhtml"; 051 052 private static final Log log = LogFactory.getLog(NuxeoUnknownResource.class); 053 054 protected final String path; 055 056 public NuxeoUnknownResource(String path) { 057 super(); 058 this.path = path; 059 } 060 061 @Override 062 public URL getURL() { 063 try { 064 String urlPath = MARKER + path; 065 return new URL("", "", -1, urlPath, new NuxeoNotFoundResourceHandler()); 066 } catch (MalformedURLException e) { 067 return null; 068 } 069 } 070 071 class NuxeoNotFoundResourceHandler extends URLStreamHandler { 072 073 public NuxeoNotFoundResourceHandler() { 074 super(); 075 } 076 077 @Override 078 protected URLConnection openConnection(URL url) throws IOException { 079 log.error("facelet not found: " + path); 080 return new Connection(url); 081 } 082 083 class Connection extends URLConnection { 084 085 public Connection(URL url) { 086 super(url); 087 } 088 089 @Override 090 public void connect() throws IOException { 091 } 092 093 @Override 094 public InputStream getInputStream() throws IOException { 095 String message = "ERROR: facelet not found"; 096 // NXP-25746 097 if (Framework.isDevModeSet() && !path.contains("$") && !path.contains("#")) { 098 message += " at '" + path + "'"; 099 } 100 String msg = "<span><span style=\"color:red;font-weight:bold;\">" 101 + StringEscapeUtils.escapeHtml4(message) + "</span><br/></span>"; 102 return new ByteArrayInputStream(msg.getBytes()); 103 } 104 } 105 } 106}