/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* vim: set ts=8 sts=4 et sw=4 tw=99: */ /* 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 "nsContentUtils.h" #include "BackstagePass.h" #include "nsDOMClassInfo.h" #include "nsIPrincipal.h" #include "mozilla/dom/BindingUtils.h" NS_INTERFACE_MAP_BEGIN(BackstagePass) NS_INTERFACE_MAP_ENTRY(nsIGlobalObject) NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable) NS_INTERFACE_MAP_ENTRY(nsIClassInfo) NS_INTERFACE_MAP_ENTRY(nsIScriptObjectPrincipal) NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference) NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIXPCScriptable) NS_INTERFACE_MAP_END NS_IMPL_ADDREF(BackstagePass) NS_IMPL_RELEASE(BackstagePass) // The nsIXPCScriptable map declaration that will generate stubs for us... #define XPC_MAP_CLASSNAME BackstagePass #define XPC_MAP_QUOTED_CLASSNAME "BackstagePass" #define XPC_MAP_WANT_RESOLVE #define XPC_MAP_WANT_ENUMERATE #define XPC_MAP_WANT_FINALIZE #define XPC_MAP_WANT_PRECREATE #define XPC_MAP_FLAGS nsIXPCScriptable::USE_JSSTUB_FOR_ADDPROPERTY | \ nsIXPCScriptable::USE_JSSTUB_FOR_DELPROPERTY | \ nsIXPCScriptable::USE_JSSTUB_FOR_SETPROPERTY | \ nsIXPCScriptable::DONT_ENUM_QUERY_INTERFACE | \ nsIXPCScriptable::IS_GLOBAL_OBJECT | \ nsIXPCScriptable::DONT_REFLECT_INTERFACE_NAMES #include "xpc_map_end.h" /* This will #undef the above */ JSObject* BackstagePass::GetGlobalJSObject() { if (mWrapper) return mWrapper->GetFlatJSObject(); 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 = mozilla::dom::SystemGlobalResolve(cx, obj, id, resolvedp); return *_retval ? NS_OK : NS_ERROR_FAILURE; } NS_IMETHODIMP BackstagePass::Enumerate(nsIXPConnectWrappedNative* wrapper, JSContext* cx, JSObject* objArg, bool* _retval) { JS::RootedObject obj(cx, objArg); *_retval = mozilla::dom::SystemGlobalEnumerate(cx, obj); return *_retval ? NS_OK : NS_ERROR_FAILURE; } /***************************************************************************/ NS_IMETHODIMP BackstagePass::GetInterfaces(uint32_t* aCount, nsIID * **aArray) { const uint32_t count = 2; *aCount = count; nsIID** array; *aArray = array = static_cast<nsIID**>(moz_xmalloc(count * sizeof(nsIID*))); if (!array) return NS_ERROR_OUT_OF_MEMORY; uint32_t index = 0; nsIID* clone; #define PUSH_IID(id) \ clone = static_cast<nsIID*>(nsMemory::Clone(&NS_GET_IID( id ), \ sizeof(nsIID))); \ if (!clone) \ goto oom; \ array[index++] = clone; PUSH_IID(nsIXPCScriptable) PUSH_IID(nsIScriptObjectPrincipal) #undef PUSH_IID return NS_OK; oom: while (index) free(array[--index]); free(array); *aArray = nullptr; return NS_ERROR_OUT_OF_MEMORY; } NS_IMETHODIMP BackstagePass::GetScriptableHelper(nsIXPCScriptable** retval) { nsCOMPtr<nsIXPCScriptable> scriptable = this; scriptable.forget(retval); return NS_OK; } NS_IMETHODIMP BackstagePass::GetContractID(char * *aContractID) { *aContractID = nullptr; return NS_ERROR_NOT_AVAILABLE; } NS_IMETHODIMP BackstagePass::GetClassDescription(char * *aClassDescription) { static const char classDescription[] = "BackstagePass"; *aClassDescription = (char*)nsMemory::Clone(classDescription, sizeof(classDescription)); return *aClassDescription ? NS_OK : NS_ERROR_OUT_OF_MEMORY; } 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_QueryWrappedNative(wrapper)); 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; } nsresult NS_NewBackstagePass(BackstagePass** ret) { RefPtr<BackstagePass> bsp = new BackstagePass( nsContentUtils::GetSystemPrincipal()); bsp.forget(ret); return NS_OK; }