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Issue 4920541991403520: Create a minimal settings UI (Closed)
Patch Set: Removed default case Created March 22, 2015, 9:23 p.m.
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1 /*
2 * This file is part of Adblock Plus <https://adblockplus.org/>,
3 * Copyright (C) 2006-2015 Eyeo GmbH
4 *
5 * Adblock Plus is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 3 as
7 * published by the Free Software Foundation.
8 *
9 * Adblock Plus is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 package org.adblockplus.browser;
19
20 import android.annotation.SuppressLint;
21 import android.os.Handler;
22 import android.os.HandlerThread;
23 import android.util.Log;
24
25 import org.json.JSONException;
26 import org.json.JSONObject;
27 import org.mozilla.gecko.GeckoAppShell;
28 import org.mozilla.gecko.util.GeckoRequest;
29 import org.mozilla.gecko.util.NativeJSObject;
30
31 @SuppressLint("DefaultLocale")
32 public class AddOnBridge
33 {
34 private static final String TAG = "AdblockBrowser.AddOnBridge";
35 private static final String REQUEST_NAME = "AdblockPlus:Api";
36 // Timeout for checking filter loading (in seconds)
37 private static final int QUERY_GET_FILTERS_LOADED_TIMEOUT = 30;
38 // How long to wait between retries (in milliseconds)
39 private static final int QUERY_GET_FILTERS_LOADED_DELAY = 500;
40 // Handler+HandlerThread for posting delayed re-tries without interfering with
41 // other threads (e.g. the UI or Gecko thread)
42 private static final HandlerThread HANDLER_THREAD;
43 private static final Handler HANDLER;
44
45 static
46 {
47 HANDLER_THREAD = new HandlerThread("abp-bridge");
48 HANDLER_THREAD.setDaemon(true);
49 HANDLER_THREAD.start();
50 HANDLER = new Handler(HANDLER_THREAD.getLooper());
51 }
52
53 public static boolean getBooleanFromJsObject(final NativeJSObject obj, final S tring name,
54 final boolean defaultValue)
55 {
56 try
57 {
58 return obj.getBoolean(name);
59 }
60 catch (final Exception e)
61 {
62 return defaultValue;
63 }
64 }
65
66 public static String getStringFromJsObject(final NativeJSObject obj, final Str ing name,
67 final String defaultValue)
68 {
69 try
70 {
71 return obj.getString(name);
72 }
73 catch (final Exception e)
74 {
75 return defaultValue;
76 }
77 }
78
79 private static JSONObject createRequestData(final String action)
80 {
81 final JSONObject obj = new JSONObject();
82 try
83 {
84 obj.put("action", action);
85 }
86 catch (JSONException e)
87 {
88 // we're only adding sane objects
89 Log.e(TAG, "Creating request data failed with: " + e.getMessage(), e);
90 }
91 return obj;
92 }
93
94 private static JSONObject createRequestData(final String action, final boolean enable)
95 {
96 final JSONObject obj = createRequestData(action);
97 try
98 {
99 obj.put("enable", enable);
100 }
101 catch (JSONException e)
102 {
103 // we're only adding sane objects
104 Log.e(TAG, "Creating request data failed with: " + e.getMessage(), e);
105 }
106 return obj;
107 }
108
109 public static String makeFirstCharacterUppercase(String str)
110 {
111 if (Character.isUpperCase(str.charAt(0)))
112 {
113 return str;
114 }
115 return Character.toString(Character.toUpperCase(str.charAt(0))) + str.substr ing(1);
116 }
117
118 public static void queryBoolean(final AdblockPlusApiCallback callback, final S tring name)
119 {
120 Log.d(TAG, "queryBoolean for " + name);
121 GeckoAppShell.sendRequestToGecko(
122 new ChainedRequest(
123 createRequestData("get" + makeFirstCharacterUppercase(name)),
124 callback));
125 }
126
127 public static void setBoolean(final AdblockPlusApiCallback callback, final Str ing name,
128 final boolean enable)
129 {
130 Log.d(TAG, "setBoolean " + enable + " for " + name);
131 GeckoAppShell.sendRequestToGecko(
132 new ChainedRequest(
133 createRequestData("set" + makeFirstCharacterUppercase(name), enable) ,
134 callback));
135 }
136
137 private static class ChainedRequest extends GeckoRequest
138 {
139 private final JSONObject value;
140 private final AdblockPlusApiCallback apiCallback;
141 private final boolean checkForFiltersLoaded;
142 private final long creationTime;
143
144 public ChainedRequest(final JSONObject value, final AdblockPlusApiCallback c allback,
145 final boolean checkForFiltersLoaded, final long creationTime)
146 {
147 super(AddOnBridge.REQUEST_NAME,
148 checkForFiltersLoaded ? createRequestData("getFiltersLoaded") : value) ;
149 this.value = value;
150 this.apiCallback = callback;
151 this.checkForFiltersLoaded = checkForFiltersLoaded;
152 this.creationTime = creationTime;
153 }
154
155 public ChainedRequest(final JSONObject value, final AdblockPlusApiCallback c allback)
156 {
157 this(value, callback, true, System.currentTimeMillis());
158 }
159
160 public ChainedRequest cloneForRetry()
161 {
162 return new ChainedRequest(this.value, this.apiCallback, true, this.creatio nTime);
163 }
164
165 public ChainedRequest cloneForRequest()
166 {
167 return new ChainedRequest(this.value, this.apiCallback, false, this.creati onTime);
168 }
169
170 private void invokeSuccessCallback(final NativeJSObject jsObject)
171 {
172 try
173 {
174 if (this.apiCallback != null)
175 {
176 this.apiCallback.onApiRequestSucceeded(jsObject);
177 }
178 }
179 catch (final Exception e)
180 {
181 Log.e(TAG, "onApiRequestSucceeded threw exception: " + e.getMessage(), e );
182 }
183 }
184
185 private void invokeFailureCallback(final String msg)
186 {
187 if (this.apiCallback != null)
188 {
189 this.apiCallback.onApiRequestFailed(msg);
190 }
191 }
192
193 private void invokeFailureCallback(final NativeJSObject jsObject)
194 {
195 invokeFailureCallback(getStringFromJsObject(jsObject, "error", "unknown er ror"));
196 }
197
198 private void attemptRetry()
199 {
200 if (System.currentTimeMillis() - this.creationTime > (QUERY_GET_FILTERS_LO ADED_TIMEOUT * 1000))
201 {
202 this.invokeFailureCallback("getFiltersLoaded timeout");
203 }
204 else
205 {
206 final ChainedRequest next = this.cloneForRetry();
207 HANDLER.postDelayed(new Runnable()
208 {
209 @Override
210 public void run()
211 {
212 GeckoAppShell.sendRequestToGecko(next);
213 }
214 }, QUERY_GET_FILTERS_LOADED_DELAY);
215 }
216 }
217
218 @Override
219 public void onError()
220 {
221 if (this.checkForFiltersLoaded)
222 {
223 this.attemptRetry();
224 }
225 else
226 {
227 this.invokeFailureCallback("GeckoRequest error");
228 }
229 }
230
231 @Override
232 public void onResponse(final NativeJSObject jsObject)
233 {
234 if (this.checkForFiltersLoaded)
235 {
236 if (getBooleanFromJsObject(jsObject, "success", false)
237 && getBooleanFromJsObject(jsObject, "value", false))
238 {
239 GeckoAppShell.sendRequestToGecko(this.cloneForRequest());
240 }
241 else
242 {
243 this.attemptRetry();
244 }
245 }
246 else
247 {
248 if (getBooleanFromJsObject(jsObject, "success", false))
249 {
250 this.invokeSuccessCallback(jsObject);
251 }
252 else
253 {
254 this.invokeFailureCallback(jsObject);
255 }
256 }
257 }
258 }
259 }
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