WindowNamedPropertiesHandler.h (2683B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 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 mozilla_dom_WindowNamedPropertiesHandler_h 8 #define mozilla_dom_WindowNamedPropertiesHandler_h 9 10 #include "mozilla/dom/DOMJSProxyHandler.h" 11 12 namespace mozilla::dom { 13 14 class WindowNamedPropertiesHandler : public BaseDOMProxyHandler { 15 public: 16 constexpr WindowNamedPropertiesHandler() 17 : BaseDOMProxyHandler(nullptr, /* hasPrototype = */ true) {} 18 virtual bool getOwnPropDescriptor( 19 JSContext* aCx, JS::Handle<JSObject*> aProxy, JS::Handle<jsid> aId, 20 bool /* unused */, 21 JS::MutableHandle<Maybe<JS::PropertyDescriptor>> aDesc) const override; 22 virtual bool defineProperty(JSContext* aCx, JS::Handle<JSObject*> aProxy, 23 JS::Handle<jsid> aId, 24 JS::Handle<JS::PropertyDescriptor> aDesc, 25 JS::ObjectOpResult& result) const override; 26 virtual bool ownPropNames( 27 JSContext* aCx, JS::Handle<JSObject*> aProxy, unsigned flags, 28 JS::MutableHandleVector<jsid> aProps) const override; 29 virtual bool delete_(JSContext* aCx, JS::Handle<JSObject*> aProxy, 30 JS::Handle<jsid> aId, 31 JS::ObjectOpResult& aResult) const override; 32 33 // No need for getPrototypeIfOrdinary here: window named-properties objects 34 // have static prototypes, so the version inherited from BaseDOMProxyHandler 35 // will do the right thing. 36 37 virtual bool preventExtensions(JSContext* aCx, JS::Handle<JSObject*> aProxy, 38 JS::ObjectOpResult& aResult) const override { 39 return aResult.failCantPreventExtensions(); 40 } 41 virtual bool isExtensible(JSContext* aCx, JS::Handle<JSObject*> aProxy, 42 bool* aIsExtensible) const override { 43 *aIsExtensible = true; 44 return true; 45 } 46 virtual const char* className(JSContext* aCx, 47 JS::Handle<JSObject*> aProxy) const override { 48 return "WindowProperties"; 49 } 50 51 static const WindowNamedPropertiesHandler* getInstance() { 52 static const WindowNamedPropertiesHandler instance; 53 return &instance; 54 } 55 56 // For Create, aProto is the parent of the interface prototype object of the 57 // Window we're associated with. 58 static JSObject* Create(JSContext* aCx, JS::Handle<JSObject*> aProto); 59 }; 60 61 } // namespace mozilla::dom 62 63 #endif /* mozilla_dom_WindowNamedPropertiesHandler_h */