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Issue 16067002: Added Safari Support (Closed)
Patch Set: Converted new calls to chrome.* to ext.* and fixed issue with background page proxy about added/rem… Created Nov. 9, 2013, 6:38 p.m.
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1 /*
2 * This file is part of Adblock Plus <http://adblockplus.org/>,
3 * Copyright (C) 2006-2013 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 (function()
19 {
20 /* Background page proxy */
21 var proxy = {
22 objects: [],
23 callbacks: [],
24
25 send: function(message)
26 {
27 var evt = document.createEvent("Event");
28 evt.initEvent("beforeload");
29 return safari.self.tab.canLoad(evt, {type: "proxy", payload: message});
30 },
31 checkResult: function(result)
32 {
33 if (!result.succeed)
34 throw result.error;
35 },
36 deserializeResult: function(result)
37 {
38 this.checkResult(result);
39 return this.deserialize(result.result);
40 },
41 serialize: function(obj, memo)
42 {
43 var objectId = this.objects.indexOf(obj);
44 if (objectId != -1)
45 return {type: "hosted", objectId: objectId};
46
47 if (typeof obj == "function")
48 {
49 var callbackId = this.callbacks.indexOf(obj);
50
51 if (callbackId == -1)
52 {
53 callbackId = this.callbacks.push(obj) - 1;
54
55 safari.self.addEventListener("message", function(event)
56 {
57 if (event.name == "proxyCallback")
58 if (event.message.callbackId == callbackId)
59 obj.apply(
60 this.getObject(event.message.contextId),
61 this.deserializeSequence(event.message.args)
62 );
63 }.bind(this));
64 }
65
66 return {type: "callback", callbackId: callbackId};
67 }
68
69 if (typeof obj == "object")
70 if (obj != null)
71 if (obj.constructor != Date)
72 if (obj.constructor != RegExp)
73 {
74 if (!memo)
75 memo = {specs: [], objects: []};
76
77 var idx = memo.objects.indexOf(obj);
78 if (idx != -1)
79 return memo.specs[idx];
80
81 var spec = {};
82 memo.specs.push(spec);
83 memo.objects.push(obj);
84
85 if (obj.constructor == Array)
86 {
87 spec.type = "array";
88 spec.items = [];
89
90 for (var i = 0; i < obj.length; i++)
91 spec.items.push(this.serialize(obj[i], memo));
92 }
93 else
94 {
95 spec.type = "object";
96 spec.properties = {};
97
98 for (var k in obj)
99 spec.properties[k] = this.serialize(obj[k], memo);
100 }
101
102 return spec;
103 }
104
105 return {type: "value", value: obj};
106 },
107 deserializeSequence: function(specs, array, memo)
108 {
109 if (!array)
110 array = [];
111
112 if (!memo)
113 memo = {specs: [], arrays: []};
114
115 for (var i = 0; i < specs.length; i++)
116 array.push(this.deserialize(specs[i], memo));
117
118 return array;
119 },
120 deserialize: function(spec, memo)
121 {
122 switch (spec.type)
123 {
124 case "value":
125 return spec.value;
126 case "object":
127 return this.getObject(spec.objectId);
128 case "array":
129 if (!memo)
130 memo = {specs: [], arrays: []};
131
132 var idx = memo.specs.indexOf(spec);
133 if (idx != -1)
134 return memo.arrays[idx];
135
136 var array = [];
137 memo.specs.push(spec);
138 memo.arrays.push(array);
139
140 return this.deserializeSequence(spec.items, array, memo);
141 }
142 },
143 getProperty: function(objectId, property)
144 {
145 return this.deserializeResult(
146 this.send({
147 type: "getProperty",
148 objectId: objectId,
149 property: property
150 })
151 );
152 },
153 createProperty: function(objectId, property, enumerable)
154 {
155 return {
156 get: function()
157 {
158 return this.getProperty(objectId, property);
159 }.bind(this),
160 set: function(value)
161 {
162 this.checkResult(
163 this.send({
164 type: "setProperty",
165 objectId: objectId,
166 property: property,
167 value: this.serialize(value)
168 })
169 )
170 }.bind(this),
171 enumerable: enumerable,
172 configurable: true
173 };
174 },
175 createFunction: function(objectId)
176 {
177 var proxy = this;
178 return function()
179 {
180 return proxy.deserializeResult(
181 proxy.send({
182 type: "callFunction",
183 functionId: objectId,
184 contextId: proxy.objects.indexOf(this),
185 args: Array.prototype.map.call(
186 arguments,
187 proxy.serialize.bind(proxy)
188 )
189 })
190 );
191 };
192 },
193 getObject: function(objectId) {
194 var objectInfo = this.send({
195 type: "inspectObject",
196 objectId: objectId
197 });
198
199 var obj = this.objects[objectId];
200 if (obj)
201 Object.getOwnPropertyNames(obj).forEach(function(prop) { delete obj[prop ]; });
202 else
203 {
204 if (objectInfo.isFunction)
205 obj = this.createFunction(objectId);
206 else
207 obj = {};
208
209 this.objects[objectId] = obj;
210 }
211
212 var ignored = [];
213 if ("prototypeOf" in objectInfo)
214 {
215 var prototype = window[objectInfo.prototypeOf].prototype;
216
217 ignored = Object.getOwnPropertyNames(prototype);
218 ignored.splice(ignored.indexOf("constructor"), 1);
219
220 obj.__proto__ = prototype;
221 }
222 else
223 {
224 if (objectInfo.isFunction)
225 ignored = Object.getOwnPropertyNames(function() {});
226 else
227 ignored = [];
228
229 if ("prototypeId" in objectInfo)
230 obj.__proto__ = this.getObject(objectInfo.prototypeId);
231 else
232 obj.__proto__ = null;
233 }
234
235 for (var property in objectInfo.properties)
236 if (ignored.indexOf(property) == -1)
237 Object.defineProperty(obj, property, this.createProperty(
238 objectId, property,
239 objectInfo.properties[property].enumerable
240 ));
241
242 if (objectInfo.isFunction)
243 obj.prototype = this.getProperty(objectId, "prototype");
244
245 return obj;
246 }
247 };
248
249
250 /* Web request blocking */
251
252 document.addEventListener("beforeload", function(event)
253 {
254 var type;
255
256 switch(event.target.nodeName)
257 {
258 case "FRAME":
259 case "IFRAME":
260 type = "frame";
261 break;
262 case "IMG":
263 type = "image";
264 break;
265 case "OBJECT":
266 case "EMBED":
267 type = "object";
268 break;
269 case "SCRIPT":
270 type = "script";
271 break;
272 case "LINK":
273 if (/(^|\s)stylesheet($|\s)/i.test(event.target.rel))
274 {
275 type = "stylesheet";
276 break;
277 }
278 default:
279 type = "other";
280 }
281
282 if (!safari.self.tab.canLoad(event, {type: "webRequest", payload: {url: even t.url, type: type}}))
283 event.preventDefault();
284 }, true);
285
286
287 /* API */
288
289 ext.backgroundPage = {
290 _eventTarget: safari.self,
291 _messageDispatcher: safari.self.tab,
292
293 sendMessage: sendMessage,
294 getWindow: function() { return proxy.getObject(0); }
295 };
296
297 ext.onMessage = new MessageEventTarget(safari.self);
298 })();
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