blob: 776a0652f7dd11122bd9a15df42f162c1602009d [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "services/device/screen_orientation/screen_orientation_listener_android.h"
#include "base/android/jni_android.h"
#include "base/message_loop/message_loop.h"
#include "jni/ScreenOrientationListener_jni.h"
#include "mojo/public/cpp/bindings/strong_binding.h"
namespace device {
// static
void ScreenOrientationListenerAndroid::Create(
mojom::ScreenOrientationListenerRequest request) {
mojo::MakeStrongBinding(
base::WrapUnique(new ScreenOrientationListenerAndroid()),
std::move(request));
}
ScreenOrientationListenerAndroid::ScreenOrientationListenerAndroid()
: listeners_count_(0) {}
ScreenOrientationListenerAndroid::~ScreenOrientationListenerAndroid() {
DCHECK(base::MessageLoopForIO::IsCurrent());
if (listeners_count_ > 0) {
Java_ScreenOrientationListener_startAccurateListening(
base::android::AttachCurrentThread());
}
}
void ScreenOrientationListenerAndroid::Start() {
DCHECK(base::MessageLoopForIO::IsCurrent());
++listeners_count_;
if (listeners_count_ == 1) {
// Ask the ScreenOrientationListener (Java) to start accurately listening to
// the screen orientation. It keep track of the number of start request if
// it is already running an accurate listening.
Java_ScreenOrientationListener_startAccurateListening(
base::android::AttachCurrentThread());
}
}
void ScreenOrientationListenerAndroid::Stop() {
DCHECK(base::MessageLoopForIO::IsCurrent());
DCHECK(listeners_count_ > 0);
--listeners_count_;
if (listeners_count_ == 0) {
// Ask the ScreenOrientationListener (Java) to stop accurately listening to
// the screen orientation. It will actually stop only if the number of stop
// requests matches the number of start requests.
Java_ScreenOrientationListener_stopAccurateListening(
base::android::AttachCurrentThread());
}
}
void ScreenOrientationListenerAndroid::IsAutoRotateEnabledByUser(
IsAutoRotateEnabledByUserCallback callback) {
std::move(callback).Run(
Java_ScreenOrientationListener_isAutoRotateEnabledByUser(
base::android::AttachCurrentThread()));
}
} // namespace device