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