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// Copyright (c) 2012 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 "content/browser/power_save_blocker_android.h"
#include "base/android/jni_android.h"
#include "base/android/jni_weak_ref.h"
#include "base/logging.h"
#include "content/browser/power_save_blocker_impl.h"
#include "content/public/browser/android/content_view_core.h"
#include "content/public/browser/browser_thread.h"
#include "jni/PowerSaveBlocker_jni.h"
#include "ui/base/android/view_android.h"
using base::android::AttachCurrentThread;
using base::android::ScopedJavaLocalRef;
using gfx::NativeView;
namespace content {
class PowerSaveBlockerImpl::Delegate
: public base::RefCountedThreadSafe<PowerSaveBlockerImpl::Delegate> {
public:
explicit Delegate(NativeView view_android) {
j_view_android_ = JavaObjectWeakGlobalRef(
AttachCurrentThread(), view_android->GetJavaObject().obj());
}
// Does the actual work to apply or remove the desired power save block.
void ApplyBlock();
void RemoveBlock();
private:
friend class base::RefCountedThreadSafe<Delegate>;
~Delegate() {}
JavaObjectWeakGlobalRef j_view_android_;
DISALLOW_COPY_AND_ASSIGN(Delegate);
};
void PowerSaveBlockerImpl::Delegate::ApplyBlock() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> j_object = j_view_android_.get(env);
if (j_object.obj())
Java_PowerSaveBlocker_applyBlock(env, j_object.obj());
}
void PowerSaveBlockerImpl::Delegate::RemoveBlock() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> j_object = j_view_android_.get(env);
if (j_object.obj())
Java_PowerSaveBlocker_removeBlock(env, j_object.obj());
}
PowerSaveBlockerImpl::PowerSaveBlockerImpl(PowerSaveBlockerType type,
const std::string& reason) {
// Don't support kPowerSaveBlockPreventAppSuspension
}
PowerSaveBlockerImpl::~PowerSaveBlockerImpl() {
if (delegate_.get()) {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&Delegate::RemoveBlock, delegate_));
}
}
void PowerSaveBlockerImpl::InitDisplaySleepBlocker(NativeView view_android) {
if (!view_android)
return;
delegate_ = new Delegate(view_android);
// This may be called on any thread.
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&Delegate::ApplyBlock, delegate_));
}
bool RegisterPowerSaveBlocker(JNIEnv* env) {
return RegisterNativesImpl(env);
}
} // namespace content
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