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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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209 throw MakeTypeError("observe_accept_invalid"); | 209 throw MakeTypeError("observe_accept_invalid"); |
210 | 210 |
211 if (!observerInfoMap.has(callback)) { | 211 if (!observerInfoMap.has(callback)) { |
212 observerInfoMap.set(callback, { | 212 observerInfoMap.set(callback, { |
213 pendingChangeRecords: null, | 213 pendingChangeRecords: null, |
214 priority: observationState.observerPriority++, | 214 priority: observationState.observerPriority++, |
215 }); | 215 }); |
216 } | 216 } |
217 | 217 |
218 var objectInfo = objectInfoMap.get(object); | 218 var objectInfo = objectInfoMap.get(object); |
219 if (IS_UNDEFINED(objectInfo)) objectInfo = CreateObjectInfo(object); | 219 if (IS_UNDEFINED(objectInfo)) { |
220 %SetIsObserved(object, true); | 220 objectInfo = CreateObjectInfo(object); |
| 221 %SetIsObserved(object); |
| 222 } |
221 | 223 |
222 EnsureObserverRemoved(objectInfo, callback); | 224 EnsureObserverRemoved(objectInfo, callback); |
223 | 225 |
224 var observer = CreateObserver(callback, accept); | 226 var observer = CreateObserver(callback, accept); |
225 if (ObserverIsActive(observer, objectInfo)) | 227 if (ObserverIsActive(observer, objectInfo)) |
226 objectInfo.changeObservers.push(observer); | 228 objectInfo.changeObservers.push(observer); |
227 else | 229 else |
228 objectInfo.inactiveObservers.push(observer); | 230 objectInfo.inactiveObservers.push(observer); |
229 | 231 |
230 return object; | 232 return object; |
231 } | 233 } |
232 | 234 |
233 function ObjectUnobserve(object, callback) { | 235 function ObjectUnobserve(object, callback) { |
234 if (!IS_SPEC_OBJECT(object)) | 236 if (!IS_SPEC_OBJECT(object)) |
235 throw MakeTypeError("observe_non_object", ["unobserve"]); | 237 throw MakeTypeError("observe_non_object", ["unobserve"]); |
236 if (!IS_SPEC_FUNCTION(callback)) | 238 if (!IS_SPEC_FUNCTION(callback)) |
237 throw MakeTypeError("observe_non_function", ["unobserve"]); | 239 throw MakeTypeError("observe_non_function", ["unobserve"]); |
238 | 240 |
239 var objectInfo = objectInfoMap.get(object); | 241 var objectInfo = objectInfoMap.get(object); |
240 if (IS_UNDEFINED(objectInfo)) | 242 if (IS_UNDEFINED(objectInfo)) |
241 return object; | 243 return object; |
242 | 244 |
243 EnsureObserverRemoved(objectInfo, callback); | 245 EnsureObserverRemoved(objectInfo, callback); |
244 | |
245 if (objectInfo.changeObservers.length === 0 && | |
246 objectInfo.inactiveObservers.length === 0) { | |
247 %SetIsObserved(object, false); | |
248 } | |
249 | |
250 return object; | 246 return object; |
251 } | 247 } |
252 | 248 |
253 function ArrayObserve(object, callback) { | 249 function ArrayObserve(object, callback) { |
254 return ObjectObserve(object, callback, ['new', | 250 return ObjectObserve(object, callback, ['new', |
255 'updated', | 251 'updated', |
256 'deleted', | 252 'deleted', |
257 'splice']); | 253 'splice']); |
258 } | 254 } |
259 | 255 |
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446 "observe", ArrayObserve, | 442 "observe", ArrayObserve, |
447 "unobserve", ArrayUnobserve | 443 "unobserve", ArrayUnobserve |
448 )); | 444 )); |
449 InstallFunctions(notifierPrototype, DONT_ENUM, $Array( | 445 InstallFunctions(notifierPrototype, DONT_ENUM, $Array( |
450 "notify", ObjectNotifierNotify, | 446 "notify", ObjectNotifierNotify, |
451 "performChange", ObjectNotifierPerformChange | 447 "performChange", ObjectNotifierPerformChange |
452 )); | 448 )); |
453 } | 449 } |
454 | 450 |
455 SetupObjectObserve(); | 451 SetupObjectObserve(); |
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