70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set ts=8 sts=2 et sw=2 tw=80:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* WindowProxy and Window implementation, for the web browser embedding. */
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#include "js/friend/WindowProxy.h"
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#include "mozilla/Assertions.h" // MOZ_ASSERT
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#include "js/Context.h" // js::AssertHeapIsIdle
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#include "vm/GlobalObject.h" // js::GlobalObject
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#include "vm/JSContext.h" // JSContext, CHECK_THREAD
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#include "vm/JSObject.h" // JSObject
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#include "vm/Runtime.h" // JSRuntime
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#include "vm/JSContext-inl.h" // JSContext::check
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#include "vm/JSObject-inl.h" // JSObject::nonCCWGlobal
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using JS::Handle;
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void js::SetWindowProxyClass(JSContext* cx, const JSClass* clasp) {
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MOZ_ASSERT(!cx->runtime()->maybeWindowProxyClass());
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cx->runtime()->setWindowProxyClass(clasp);
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}
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void js::SetWindowProxy(JSContext* cx, Handle<JSObject*> global,
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Handle<JSObject*> windowProxy) {
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AssertHeapIsIdle();
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CHECK_THREAD(cx);
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cx->check(global, windowProxy);
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MOZ_ASSERT(IsWindowProxy(windowProxy));
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GlobalObject& globalObj = global->as<GlobalObject>();
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if (globalObj.maybeWindowProxy() != windowProxy) {
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globalObj.setWindowProxy(windowProxy);
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globalObj.lexicalEnvironment().setWindowProxyThisObject(windowProxy);
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}
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}
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JSObject* js::ToWindowIfWindowProxy(JSObject* obj) {
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if (IsWindowProxy(obj)) {
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return &obj->nonCCWGlobal();
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}
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return obj;
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}
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JSObject* js::detail::ToWindowProxyIfWindowSlow(JSObject* obj) {
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if (JSObject* windowProxy = obj->as<GlobalObject>().maybeWindowProxy()) {
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return windowProxy;
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}
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return obj;
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}
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bool js::IsWindowProxy(JSObject* obj) {
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// Note: simply checking `obj == obj->global().windowProxy()` is not
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// sufficient: we may have transplanted the window proxy with a CCW.
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// Check the Class to ensure we really have a window proxy.
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return obj->getClass() ==
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obj->runtimeFromAnyThread()->maybeWindowProxyClass();
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}
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bool js::detail::IsWindowSlow(JSObject* obj) {
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return obj->as<GlobalObject>().maybeWindowProxy();
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}
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