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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/gamepad/ipc/GamepadEventChannelParent.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/gamepad/ipc/GamepadEventChannelParent.cpp')
-rw-r--r--dom/gamepad/ipc/GamepadEventChannelParent.cpp101
1 files changed, 101 insertions, 0 deletions
diff --git a/dom/gamepad/ipc/GamepadEventChannelParent.cpp b/dom/gamepad/ipc/GamepadEventChannelParent.cpp
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index 000000000..c3c8fd2c8
--- /dev/null
+++ b/dom/gamepad/ipc/GamepadEventChannelParent.cpp
@@ -0,0 +1,101 @@
+/* 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 "GamepadEventChannelParent.h"
+#include "GamepadPlatformService.h"
+#include "mozilla/dom/GamepadMonitoring.h"
+#include "nsThreadUtils.h"
+
+namespace mozilla {
+namespace dom {
+
+using namespace mozilla::ipc;
+
+namespace {
+
+class SendGamepadUpdateRunnable final : public Runnable
+{
+ private:
+ ~SendGamepadUpdateRunnable() {}
+ RefPtr<GamepadEventChannelParent> mParent;
+ GamepadChangeEvent mEvent;
+ public:
+ SendGamepadUpdateRunnable(GamepadEventChannelParent* aParent,
+ GamepadChangeEvent aEvent)
+ : mEvent(aEvent)
+ {
+ MOZ_ASSERT(aParent);
+ mParent = aParent;
+ }
+ NS_IMETHOD Run() override
+ {
+ AssertIsOnBackgroundThread();
+ if(mParent->HasGamepadListener()) {
+ Unused << mParent->SendGamepadUpdate(mEvent);
+ }
+ return NS_OK;
+ }
+};
+
+} // namespace
+
+GamepadEventChannelParent::GamepadEventChannelParent()
+ : mHasGamepadListener(false)
+{
+ RefPtr<GamepadPlatformService> service =
+ GamepadPlatformService::GetParentService();
+ MOZ_ASSERT(service);
+ service->AddChannelParent(this);
+ mBackgroundThread = NS_GetCurrentThread();
+}
+
+bool
+GamepadEventChannelParent::RecvGamepadListenerAdded()
+{
+ AssertIsOnBackgroundThread();
+ MOZ_ASSERT(!mHasGamepadListener);
+ mHasGamepadListener = true;
+ StartGamepadMonitoring();
+ return true;
+}
+
+bool
+GamepadEventChannelParent::RecvGamepadListenerRemoved()
+{
+ AssertIsOnBackgroundThread();
+ MOZ_ASSERT(mHasGamepadListener);
+ mHasGamepadListener = false;
+ RefPtr<GamepadPlatformService> service =
+ GamepadPlatformService::GetParentService();
+ MOZ_ASSERT(service);
+ service->RemoveChannelParent(this);
+ Unused << Send__delete__(this);
+ return true;
+}
+
+void
+GamepadEventChannelParent::ActorDestroy(ActorDestroyReason aWhy)
+{
+ AssertIsOnBackgroundThread();
+
+ // It may be called because IPDL child side crashed, we'll
+ // not receive RecvGamepadListenerRemoved in that case
+ if (mHasGamepadListener) {
+ mHasGamepadListener = false;
+ RefPtr<GamepadPlatformService> service =
+ GamepadPlatformService::GetParentService();
+ MOZ_ASSERT(service);
+ service->RemoveChannelParent(this);
+ }
+ MaybeStopGamepadMonitoring();
+}
+
+void
+GamepadEventChannelParent::DispatchUpdateEvent(const GamepadChangeEvent& aEvent)
+{
+ mBackgroundThread->Dispatch(new SendGamepadUpdateRunnable(this, aEvent),
+ NS_DISPATCH_NORMAL);
+}
+
+} // namespace dom
+} // namespace mozilla