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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/api/power/power_api.h"
#include "base/functional/bind.h"
#include "base/lazy_instance.h"
#include "content/public/browser/device_service.h"
#include "extensions/browser/api/power/activity_reporter_delegate.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/common/api/power.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_id.h"
#include "services/device/public/mojom/wake_lock_provider.mojom.h"
namespace extensions {
namespace {
const char kWakeLockDescription[] = "extension";
device::mojom::WakeLockType LevelToWakeLockType(api::power::Level level) {
switch (level) {
case api::power::Level::kSystem:
return device::mojom::WakeLockType::kPreventAppSuspension;
case api::power::Level::kDisplay: // fallthrough
case api::power::Level::kNone:
return device::mojom::WakeLockType::kPreventDisplaySleep;
}
NOTREACHED() << "Unhandled power level: " << api::power::ToString(level);
}
base::LazyInstance<BrowserContextKeyedAPIFactory<PowerAPI>>::DestructorAtExit
g_factory = LAZY_INSTANCE_INITIALIZER;
} // namespace
ExtensionFunction::ResponseAction PowerRequestKeepAwakeFunction::Run() {
std::optional<api::power::RequestKeepAwake::Params> params =
api::power::RequestKeepAwake::Params::Create(args());
EXTENSION_FUNCTION_VALIDATE(params);
PowerAPI::Get(browser_context())->AddRequest(extension_id(), params->level);
return RespondNow(NoArguments());
}
ExtensionFunction::ResponseAction PowerReleaseKeepAwakeFunction::Run() {
PowerAPI::Get(browser_context())->RemoveRequest(extension_id());
return RespondNow(NoArguments());
}
#if BUILDFLAG(IS_CHROMEOS)
ExtensionFunction::ResponseAction PowerReportActivityFunction::Run() {
std::optional<std::string> error =
extensions::ActivityReporterDelegate::GetDelegate()->ReportActivity();
if (error.has_value()) {
return RespondNow(Error(error.value()));
}
return RespondNow(NoArguments());
}
#endif // BUILDFLAG(IS_CHROMEOS)
// static
PowerAPI* PowerAPI::Get(content::BrowserContext* context) {
return BrowserContextKeyedAPIFactory<PowerAPI>::Get(context);
}
// static
BrowserContextKeyedAPIFactory<PowerAPI>* PowerAPI::GetFactoryInstance() {
return g_factory.Pointer();
}
void PowerAPI::AddRequest(const ExtensionId& extension_id,
api::power::Level level) {
extension_levels_[extension_id] = level;
UpdateWakeLock();
}
void PowerAPI::RemoveRequest(const ExtensionId& extension_id) {
extension_levels_.erase(extension_id);
UpdateWakeLock();
}
void PowerAPI::SetWakeLockFunctionsForTesting(
ActivateWakeLockFunction activate_function,
CancelWakeLockFunction cancel_function) {
activate_wake_lock_function_ =
!activate_function.is_null()
? std::move(activate_function)
: base::BindRepeating(&PowerAPI::ActivateWakeLock,
base::Unretained(this));
cancel_wake_lock_function_ =
!cancel_function.is_null()
? std::move(cancel_function)
: base::BindRepeating(&PowerAPI::CancelWakeLock,
base::Unretained(this));
}
void PowerAPI::OnExtensionUnloaded(content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionReason reason) {
RemoveRequest(extension->id());
UpdateWakeLock();
}
PowerAPI::PowerAPI(content::BrowserContext* context)
: browser_context_(context),
activate_wake_lock_function_(
base::BindRepeating(&PowerAPI::ActivateWakeLock,
base::Unretained(this))),
cancel_wake_lock_function_(base::BindRepeating(&PowerAPI::CancelWakeLock,
base::Unretained(this))),
is_wake_lock_active_(false),
current_level_(api::power::Level::kSystem) {
ExtensionRegistry::Get(browser_context_)->AddObserver(this);
}
PowerAPI::~PowerAPI() = default;
void PowerAPI::UpdateWakeLock() {
if (extension_levels_.empty()) {
cancel_wake_lock_function_.Run();
return;
}
api::power::Level new_level = api::power::Level::kSystem;
for (ExtensionLevelMap::const_iterator it = extension_levels_.begin();
it != extension_levels_.end(); ++it) {
if (it->second == api::power::Level::kDisplay) {
new_level = it->second;
}
}
if (!is_wake_lock_active_ || new_level != current_level_) {
device::mojom::WakeLockType type = LevelToWakeLockType(new_level);
activate_wake_lock_function_.Run(type);
current_level_ = new_level;
}
}
void PowerAPI::Shutdown() {
// Unregister here rather than in the d'tor; otherwise this call will recreate
// the already-deleted ExtensionRegistry.
ExtensionRegistry::Get(browser_context_)->RemoveObserver(this);
cancel_wake_lock_function_.Run();
}
void PowerAPI::ActivateWakeLock(device::mojom::WakeLockType type) {
GetWakeLock()->ChangeType(type, base::DoNothing());
if (!is_wake_lock_active_) {
GetWakeLock()->RequestWakeLock();
is_wake_lock_active_ = true;
}
}
void PowerAPI::CancelWakeLock() {
if (is_wake_lock_active_) {
GetWakeLock()->CancelWakeLock();
is_wake_lock_active_ = false;
}
}
device::mojom::WakeLock* PowerAPI::GetWakeLock() {
// Here is a lazy binding, and will not reconnect after connection error.
if (wake_lock_) {
return wake_lock_.get();
}
mojo::Remote<device::mojom::WakeLockProvider> wake_lock_provider;
content::GetDeviceService().BindWakeLockProvider(
wake_lock_provider.BindNewPipeAndPassReceiver());
wake_lock_provider->GetWakeLockWithoutContext(
LevelToWakeLockType(current_level_),
device::mojom::WakeLockReason::kOther, kWakeLockDescription,
wake_lock_.BindNewPipeAndPassReceiver());
return wake_lock_.get();
}
} // namespace extensions
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