The Tor Browser / file comparison
comparison: js/xpconnect/wrappers/ChromeObjectWrapper.h
js/xpconnect/wrappers/ChromeObjectWrapper.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:0f7e8114715c |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* vim: set ts=8 sts=4 et sw=4 tw=99: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef __ChromeObjectWrapper_h__ | |
| 8 #define __ChromeObjectWrapper_h__ | |
| 9 | |
| 10 #include "mozilla/Attributes.h" | |
| 11 | |
| 12 #include "FilteringWrapper.h" | |
| 13 | |
| 14 namespace xpc { | |
| 15 | |
| 16 struct ExposedPropertiesOnly; | |
| 17 | |
| 18 // When chrome JS objects are exposed to content, they get a ChromeObjectWrapper. | |
| 19 // | |
| 20 // The base filtering wrapper here does most of the work for us. We define a | |
| 21 // custom class here to introduce custom behavior with respect to the prototype | |
| 22 // chain. | |
| 23 #define ChromeObjectWrapperBase \ | |
| 24 FilteringWrapper<js::CrossCompartmentSecurityWrapper, ExposedPropertiesOnly> | |
| 25 | |
| 26 class ChromeObjectWrapper : public ChromeObjectWrapperBase | |
| 27 { | |
| 28 public: | |
| 29 ChromeObjectWrapper() : ChromeObjectWrapperBase(0) {} | |
| 30 | |
| 31 /* Custom traps. */ | |
| 32 virtual bool getPropertyDescriptor(JSContext *cx, JS::Handle<JSObject*> wrapper, | |
| 33 JS::Handle<jsid> id, | |
| 34 JS::MutableHandle<JSPropertyDescriptor> desc) MOZ_OVERRIDE; | |
| 35 virtual bool has(JSContext *cx, JS::Handle<JSObject*> wrapper, | |
| 36 JS::Handle<jsid> id, bool *bp) MOZ_OVERRIDE; | |
| 37 virtual bool get(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> receiver, | |
| 38 JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp) MOZ_OVERRIDE; | |
| 39 | |
| 40 virtual bool objectClassIs(JS::Handle<JSObject*> obj, js::ESClassValue classValue, | |
| 41 JSContext *cx) MOZ_OVERRIDE; | |
| 42 | |
| 43 virtual bool enter(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<jsid> id, | |
| 44 js::Wrapper::Action act, bool *bp) MOZ_OVERRIDE; | |
| 45 | |
| 46 // NB: One might think we'd need to implement enumerate(), keys(), iterate(), | |
| 47 // and getPropertyNames() here. However, ES5 built-in properties aren't | |
| 48 // enumerable (and SpiderMonkey's implementation seems to match the spec | |
| 49 // modulo Error.prototype.fileName and Error.prototype.lineNumber). Since | |
| 50 // we're only remapping the prototypes of standard objects, there would | |
| 51 // never be anything more to enumerate up the prototype chain. So we can | |
| 52 // atually skip these. | |
| 53 | |
| 54 static ChromeObjectWrapper singleton; | |
| 55 }; | |
| 56 | |
| 57 } /* namespace xpc */ | |
| 58 | |
| 59 #endif /* __ChromeObjectWrapper_h__ */ |
