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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 "base/android/jni_android.h"
#include "base/logging.h"
#include "base/macros.h"
#include "content/browser/android/content_view_core_impl.h"
#include "content/browser/power_save_blocker_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/android/content_view_core.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents_observer.h"
#include "jni/PowerSaveBlocker_jni.h"
#include "ui/android/view_android.h"
namespace content {
using base::android::AttachCurrentThread;
class PowerSaveBlockerImpl::Delegate
: public base::RefCountedThreadSafe<PowerSaveBlockerImpl::Delegate>,
public WebContentsObserver {
public:
explicit Delegate(WebContents* web_contents);
// Does the actual work to apply or remove the desired power save block.
void ApplyBlock();
void RemoveBlock();
private:
friend class base::RefCountedThreadSafe<Delegate>;
~Delegate() override;
base::android::ScopedJavaLocalRef<jobject> GetContentViewCore();
base::android::ScopedJavaGlobalRef<jobject> java_power_save_blocker_;
DISALLOW_COPY_AND_ASSIGN(Delegate);
};
PowerSaveBlockerImpl::Delegate::Delegate(WebContents* web_contents)
: WebContentsObserver(web_contents) {
JNIEnv* env = AttachCurrentThread();
java_power_save_blocker_.Reset(Java_PowerSaveBlocker_create(env));
}
PowerSaveBlockerImpl::Delegate::~Delegate() {
}
void PowerSaveBlockerImpl::Delegate::ApplyBlock() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
base::android::ScopedJavaLocalRef<jobject> java_content_view_core =
GetContentViewCore();
if (java_content_view_core.is_null())
return;
ScopedJavaLocalRef<jobject> obj(java_power_save_blocker_);
JNIEnv* env = AttachCurrentThread();
Java_PowerSaveBlocker_applyBlock(env, obj.obj(),
java_content_view_core.obj());
}
void PowerSaveBlockerImpl::Delegate::RemoveBlock() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
base::android::ScopedJavaLocalRef<jobject> java_content_view_core =
GetContentViewCore();
if (java_content_view_core.is_null())
return;
ScopedJavaLocalRef<jobject> obj(java_power_save_blocker_);
JNIEnv* env = AttachCurrentThread();
Java_PowerSaveBlocker_removeBlock(env, obj.obj(),
java_content_view_core.obj());
}
base::android::ScopedJavaLocalRef<jobject>
PowerSaveBlockerImpl::Delegate::GetContentViewCore() {
if (!web_contents())
return base::android::ScopedJavaLocalRef<jobject>();
ContentViewCoreImpl* content_view_core_impl =
ContentViewCoreImpl::FromWebContents(web_contents());
if (!content_view_core_impl)
return base::android::ScopedJavaLocalRef<jobject>();
return content_view_core_impl->GetJavaObject();
}
PowerSaveBlockerImpl::PowerSaveBlockerImpl(PowerSaveBlockerType type,
Reason reason,
const std::string& description) {
// Don't support kPowerSaveBlockPreventAppSuspension
}
PowerSaveBlockerImpl::~PowerSaveBlockerImpl() {
if (delegate_.get()) {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&Delegate::RemoveBlock, delegate_));
}
}
void PowerSaveBlockerImpl::InitDisplaySleepBlocker(WebContents* web_contents) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!web_contents)
return;
delegate_ = new Delegate(web_contents);
delegate_->ApplyBlock();
}
bool RegisterPowerSaveBlocker(JNIEnv* env) {
return RegisterNativesImpl(env);
}
} // namespace content
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