forked from mirrors/gecko-dev
42b7f1a58c
This prevents copies and avoids the hack we have to avoid this, which
right now is using nsDependent{C,}String.
Non-virtual actors can still use `nsString` if they need to on the
receiving end.
Differential Revision: https://phabricator.services.mozilla.com/D152519
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/* 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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#include "TestShellParent.h"
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/* This must occur *after* TestShellParent.h to avoid typedefs conflicts. */
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#include "jsfriendapi.h"
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#include "js/CallAndConstruct.h" // JS_CallFunctionValue
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#include "mozilla/dom/AutoEntryScript.h"
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using namespace mozilla;
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using mozilla::ipc::PTestShellCommandParent;
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using mozilla::ipc::TestShellCommandParent;
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using mozilla::ipc::TestShellParent;
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void TestShellParent::ActorDestroy(ActorDestroyReason aWhy) {
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// Implement me! Bug 1005177
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}
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PTestShellCommandParent* TestShellParent::AllocPTestShellCommandParent(
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const nsAString& aCommand) {
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return new TestShellCommandParent();
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}
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bool TestShellParent::DeallocPTestShellCommandParent(
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PTestShellCommandParent* aActor) {
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delete aActor;
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return true;
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}
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bool TestShellParent::CommandDone(TestShellCommandParent* command,
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const nsAString& aResponse) {
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// XXX what should happen if the callback fails?
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/*bool ok = */ command->RunCallback(aResponse);
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command->ReleaseCallback();
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return true;
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}
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bool TestShellCommandParent::SetCallback(JSContext* aCx,
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const JS::Value& aCallback) {
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if (!mCallback.initialized()) {
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mCallback.init(aCx, aCallback);
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return true;
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}
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mCallback = aCallback;
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return true;
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}
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bool TestShellCommandParent::RunCallback(const nsAString& aResponse) {
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NS_ENSURE_TRUE(mCallback.isObject(), false);
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MOZ_RELEASE_ASSERT(js::IsFunctionObject(&mCallback.toObject()));
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// We're about to run script via JS_CallFunctionValue, so we need an
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// AutoEntryScript. This is just for testing and not in any spec.
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dom::AutoEntryScript aes(&mCallback.toObject(), "TestShellCommand");
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JSContext* cx = aes.cx();
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JS::Rooted<JSObject*> global(cx, JS::CurrentGlobalOrNull(cx));
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JSString* str =
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JS_NewUCStringCopyN(cx, aResponse.BeginReading(), aResponse.Length());
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NS_ENSURE_TRUE(str, false);
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JS::Rooted<JS::Value> strVal(cx, JS::StringValue(str));
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JS::Rooted<JS::Value> rval(cx);
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JS::Rooted<JS::Value> callback(cx, mCallback);
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bool ok = JS_CallFunctionValue(cx, global, callback,
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JS::HandleValueArray(strVal), &rval);
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NS_ENSURE_TRUE(ok, false);
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return true;
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}
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void TestShellCommandParent::ReleaseCallback() { mCallback.reset(); }
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bool TestShellCommandParent::ExecuteCallback(const nsAString& aResponse) {
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return static_cast<TestShellParent*>(Manager())->CommandDone(this, aResponse);
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}
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void TestShellCommandParent::ActorDestroy(ActorDestroyReason why) {
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if (why == AbnormalShutdown) {
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ExecuteCallback(u""_ns);
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}
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}
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