1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.webkit; 18 19 import android.annotation.Nullable; 20 import android.webkit.CacheManager.CacheResult; 21 import android.webkit.PluginData; 22 import android.webkit.UrlInterceptHandler; 23 24 import java.util.Iterator; 25 import java.util.LinkedList; 26 import java.util.Map; 27 28 /** 29 * @hide 30 * @deprecated This class was intended to be used by Gears. Since Gears was 31 * deprecated, so is this class. 32 */ 33 @Deprecated 34 public final class UrlInterceptRegistry { 35 36 private final static String LOGTAG = "intercept"; 37 38 private static boolean mDisabled = false; 39 40 private static LinkedList mHandlerList; 41 getHandlers()42 private static synchronized LinkedList getHandlers() { 43 if(mHandlerList == null) 44 mHandlerList = new LinkedList<UrlInterceptHandler>(); 45 return mHandlerList; 46 } 47 48 /** 49 * set the flag to control whether url intercept is enabled or disabled 50 * 51 * @param disabled {@code true} to disable the cache 52 * 53 * @hide 54 * @deprecated This class was intended to be used by Gears. Since Gears was 55 * deprecated, so is this class. 56 */ 57 @Deprecated setUrlInterceptDisabled(boolean disabled)58 public static synchronized void setUrlInterceptDisabled(boolean disabled) { 59 mDisabled = disabled; 60 } 61 62 /** 63 * get the state of the url intercept, enabled or disabled 64 * 65 * @return return if it is disabled 66 * 67 * @hide 68 * @deprecated This class was intended to be used by Gears. Since Gears was 69 * deprecated, so is this class. 70 */ 71 @Deprecated urlInterceptDisabled()72 public static synchronized boolean urlInterceptDisabled() { 73 return mDisabled; 74 } 75 76 /** 77 * Register a new UrlInterceptHandler. This handler will be called 78 * before any that were previously registered. 79 * 80 * @param handler The new UrlInterceptHandler object 81 * @return {@code true} if the handler was not previously registered. 82 * 83 * @hide 84 * @deprecated This class was intended to be used by Gears. Since Gears was 85 * deprecated, so is this class. 86 */ 87 @Deprecated registerHandler( UrlInterceptHandler handler)88 public static synchronized boolean registerHandler( 89 UrlInterceptHandler handler) { 90 if (!getHandlers().contains(handler)) { 91 getHandlers().addFirst(handler); 92 return true; 93 } else { 94 return false; 95 } 96 } 97 98 /** 99 * Unregister a previously registered UrlInterceptHandler. 100 * 101 * @param handler A previously registered UrlInterceptHandler. 102 * @return {@code true} if the handler was found and removed from the list. 103 * 104 * @hide 105 * @deprecated This class was intended to be used by Gears. Since Gears was 106 * deprecated, so is this class. 107 */ 108 @Deprecated unregisterHandler( UrlInterceptHandler handler)109 public static synchronized boolean unregisterHandler( 110 UrlInterceptHandler handler) { 111 return getHandlers().remove(handler); 112 } 113 114 /** 115 * Given an url, returns the CacheResult of the first 116 * UrlInterceptHandler interested, or {@code null} if none are. 117 * 118 * @return A CacheResult containing surrogate content. 119 * 120 * @hide 121 * @deprecated This class was intended to be used by Gears. Since Gears was 122 * deprecated, so is this class. 123 */ 124 @Deprecated 125 @Nullable getSurrogate( String url, Map<String, String> headers)126 public static synchronized CacheResult getSurrogate( 127 String url, Map<String, String> headers) { 128 if (urlInterceptDisabled()) { 129 return null; 130 } 131 Iterator iter = getHandlers().listIterator(); 132 while (iter.hasNext()) { 133 UrlInterceptHandler handler = (UrlInterceptHandler) iter.next(); 134 CacheResult result = handler.service(url, headers); 135 if (result != null) { 136 return result; 137 } 138 } 139 return null; 140 } 141 142 /** 143 * Given an url, returns the PluginData of the first 144 * UrlInterceptHandler interested, or {@code null} if none are or if 145 * intercepts are disabled. 146 * 147 * @return A PluginData instance containing surrogate content. 148 * 149 * @hide 150 * @deprecated This class was intended to be used by Gears. Since Gears was 151 * deprecated, so is this class. 152 */ 153 @Deprecated 154 @Nullable getPluginData( String url, Map<String, String> headers)155 public static synchronized PluginData getPluginData( 156 String url, Map<String, String> headers) { 157 if (urlInterceptDisabled()) { 158 return null; 159 } 160 Iterator iter = getHandlers().listIterator(); 161 while (iter.hasNext()) { 162 UrlInterceptHandler handler = (UrlInterceptHandler) iter.next(); 163 PluginData data = handler.getPluginData(url, headers); 164 if (data != null) { 165 return data; 166 } 167 } 168 return null; 169 } 170 } 171