106 lines
2.6 KiB
C++
106 lines
2.6 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GamepadEventChannelParent.h"
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#include "GamepadPlatformService.h"
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#include "mozilla/Unused.h"
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#include "mozilla/dom/GamepadMonitoring.h"
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#include "mozilla/ipc/BackgroundParent.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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namespace dom {
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using namespace mozilla::ipc;
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namespace {
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class SendGamepadUpdateRunnable final : public Runnable
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{
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private:
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~SendGamepadUpdateRunnable() {}
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RefPtr<GamepadEventChannelParent> mParent;
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GamepadChangeEvent mEvent;
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public:
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SendGamepadUpdateRunnable(GamepadEventChannelParent* aParent,
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GamepadChangeEvent aEvent)
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: mEvent(aEvent)
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{
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MOZ_ASSERT(aParent);
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mParent = aParent;
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}
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NS_IMETHOD Run() override
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{
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AssertIsOnBackgroundThread();
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if(mParent->HasGamepadListener()) {
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Unused << mParent->SendGamepadUpdate(mEvent);
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}
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return NS_OK;
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}
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};
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} // namespace
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GamepadEventChannelParent::GamepadEventChannelParent()
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: mHasGamepadListener(false)
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{
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RefPtr<GamepadPlatformService> service =
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GamepadPlatformService::GetParentService();
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MOZ_ASSERT(service);
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service->AddChannelParent(this);
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mBackgroundThread = NS_GetCurrentThread();
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}
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bool
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GamepadEventChannelParent::RecvGamepadListenerAdded()
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{
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AssertIsOnBackgroundThread();
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MOZ_ASSERT(!mHasGamepadListener);
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mHasGamepadListener = true;
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StartGamepadMonitoring();
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return true;
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}
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bool
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GamepadEventChannelParent::RecvGamepadListenerRemoved()
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{
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AssertIsOnBackgroundThread();
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MOZ_ASSERT(mHasGamepadListener);
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mHasGamepadListener = false;
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RefPtr<GamepadPlatformService> service =
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GamepadPlatformService::GetParentService();
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MOZ_ASSERT(service);
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service->RemoveChannelParent(this);
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Unused << Send__delete__(this);
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return true;
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}
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void
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GamepadEventChannelParent::ActorDestroy(ActorDestroyReason aWhy)
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{
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AssertIsOnBackgroundThread();
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// It may be called because IPDL child side crashed, we'll
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// not receive RecvGamepadListenerRemoved in that case
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if (mHasGamepadListener) {
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mHasGamepadListener = false;
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RefPtr<GamepadPlatformService> service =
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GamepadPlatformService::GetParentService();
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MOZ_ASSERT(service);
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service->RemoveChannelParent(this);
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}
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MaybeStopGamepadMonitoring();
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}
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void
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GamepadEventChannelParent::DispatchUpdateEvent(const GamepadChangeEvent& aEvent)
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{
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mBackgroundThread->Dispatch(new SendGamepadUpdateRunnable(this, aEvent),
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NS_DISPATCH_NORMAL);
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}
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} // namespace dom
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} // namespace mozilla
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