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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/. */
#include "xpcprivate.h"
#include "xpc_make_class.h"
#include "nsContentUtils.h"
#include "BackstagePass.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/WebIDLGlobalNameHash.h"
using namespace mozilla::dom;
NS_IMPL_ISUPPORTS(BackstagePass, nsIXPCScriptable, nsIGlobalObject,
nsIClassInfo, nsIScriptObjectPrincipal,
nsISupportsWeakReference)
BackstagePass::BackstagePass()
: mPrincipal(nsContentUtils::GetSystemPrincipal()), mWrapper(nullptr) {}
// XXX(nika): It appears we don't have support for mayresolve hooks in
// nsIXPCScriptable, and I don't really want to add it because I'd rather just
// kill nsIXPCScriptable alltogether, so we don't use it here.
// The nsIXPCScriptable map declaration that will generate stubs for us...
#define XPC_MAP_CLASSNAME BackstagePass
#define XPC_MAP_QUOTED_CLASSNAME "BackstagePass"
#define XPC_MAP_FLAGS \
(XPC_SCRIPTABLE_WANT_RESOLVE | XPC_SCRIPTABLE_WANT_NEWENUMERATE | \
XPC_SCRIPTABLE_WANT_FINALIZE | XPC_SCRIPTABLE_WANT_PRECREATE | \
XPC_SCRIPTABLE_USE_JSSTUB_FOR_ADDPROPERTY | \
XPC_SCRIPTABLE_USE_JSSTUB_FOR_DELPROPERTY | \
XPC_SCRIPTABLE_DONT_ENUM_QUERY_INTERFACE | \
XPC_SCRIPTABLE_IS_GLOBAL_OBJECT | \
XPC_SCRIPTABLE_DONT_REFLECT_INTERFACE_NAMES)
#include "xpc_map_end.h" /* This will #undef the above */
JSObject* BackstagePass::GetGlobalJSObject() {
if (mWrapper) {
return mWrapper->GetFlatJSObject();
}
return nullptr;
}
JSObject* BackstagePass::GetGlobalJSObjectPreserveColor() const {
if (mWrapper) {
return mWrapper->GetFlatJSObjectPreserveColor();
}
return nullptr;
}
void BackstagePass::SetGlobalObject(JSObject* global) {
nsISupports* p = XPCWrappedNative::Get(global);
MOZ_ASSERT(p);
mWrapper = static_cast<XPCWrappedNative*>(p);
}
NS_IMETHODIMP
BackstagePass::Resolve(nsIXPConnectWrappedNative* wrapper, JSContext* cx,
JSObject* objArg, jsid idArg, bool* resolvedp,
bool* _retval) {
JS::RootedObject obj(cx, objArg);
JS::RootedId id(cx, idArg);
*_retval =
WebIDLGlobalNameHash::ResolveForSystemGlobal(cx, obj, id, resolvedp);
return *_retval ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
BackstagePass::NewEnumerate(nsIXPConnectWrappedNative* wrapper, JSContext* cx,
JSObject* objArg,
JS::MutableHandleIdVector properties,
bool enumerableOnly, bool* _retval) {
JS::RootedObject obj(cx, objArg);
*_retval = WebIDLGlobalNameHash::NewEnumerateSystemGlobal(cx, obj, properties,
enumerableOnly);
return *_retval ? NS_OK : NS_ERROR_FAILURE;
}
/***************************************************************************/
NS_IMETHODIMP
BackstagePass::GetInterfaces(nsTArray<nsIID>& aArray) {
aArray = nsTArray<nsIID>{NS_GET_IID(nsIXPCScriptable),
NS_GET_IID(nsIScriptObjectPrincipal)};
return NS_OK;
}
NS_IMETHODIMP
BackstagePass::GetScriptableHelper(nsIXPCScriptable** retval) {
nsCOMPtr<nsIXPCScriptable> scriptable = this;
scriptable.forget(retval);
return NS_OK;
}
NS_IMETHODIMP
BackstagePass::GetContractID(nsACString& aContractID) {
aContractID.SetIsVoid(true);
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
BackstagePass::GetClassDescription(nsACString& aClassDescription) {
aClassDescription.AssignLiteral("BackstagePass");
return NS_OK;
}
NS_IMETHODIMP
BackstagePass::GetClassID(nsCID** aClassID) {
*aClassID = nullptr;
return NS_OK;
}
NS_IMETHODIMP
BackstagePass::GetFlags(uint32_t* aFlags) {
*aFlags = nsIClassInfo::MAIN_THREAD_ONLY;
return NS_OK;
}
NS_IMETHODIMP
BackstagePass::GetClassIDNoAlloc(nsCID* aClassIDNoAlloc) {
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
BackstagePass::Finalize(nsIXPConnectWrappedNative* wrapper, JSFreeOp* fop,
JSObject* obj) {
nsCOMPtr<nsIGlobalObject> bsp(do_QueryInterface(wrapper->Native()));
MOZ_ASSERT(bsp);
static_cast<BackstagePass*>(bsp.get())->ForgetGlobalObject();
return NS_OK;
}
NS_IMETHODIMP
BackstagePass::PreCreate(nsISupports* nativeObj, JSContext* cx,
JSObject* globalObj, JSObject** parentObj) {
// We do the same trick here as for WindowSH. Return the js global
// as parent, so XPConenct can find the right scope and the wrapper
// that already exists.
nsCOMPtr<nsIGlobalObject> global(do_QueryInterface(nativeObj));
MOZ_ASSERT(global, "nativeObj not a global object!");
JSObject* jsglobal = global->GetGlobalJSObject();
if (jsglobal) {
*parentObj = jsglobal;
}
return NS_OK;
}