150 lines
4.6 KiB
C++
150 lines
4.6 KiB
C++
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/browser/api/electron_api_power_save_blocker.h"
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#include <string>
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#include "base/bind_helpers.h"
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#include "base/task/post_task.h"
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#include "base/threading/thread_task_runner_handle.h"
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#include "content/public/browser/device_service.h"
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#include "gin/dictionary.h"
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#include "gin/function_template.h"
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#include "services/device/public/mojom/wake_lock_provider.mojom.h"
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#include "services/service_manager/public/cpp/connector.h"
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#include "shell/common/node_includes.h"
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namespace gin {
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template <>
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struct Converter<device::mojom::WakeLockType> {
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static bool FromV8(v8::Isolate* isolate,
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v8::Local<v8::Value> val,
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device::mojom::WakeLockType* out) {
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std::string type;
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if (!ConvertFromV8(isolate, val, &type))
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return false;
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if (type == "prevent-app-suspension")
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*out = device::mojom::WakeLockType::kPreventAppSuspension;
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else if (type == "prevent-display-sleep")
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*out = device::mojom::WakeLockType::kPreventDisplaySleep;
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else
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return false;
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return true;
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}
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};
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} // namespace gin
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namespace electron {
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namespace api {
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gin::WrapperInfo PowerSaveBlocker::kWrapperInfo = {gin::kEmbedderNativeGin};
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PowerSaveBlocker::PowerSaveBlocker(v8::Isolate* isolate)
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: current_lock_type_(device::mojom::WakeLockType::kPreventAppSuspension),
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is_wake_lock_active_(false) {}
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PowerSaveBlocker::~PowerSaveBlocker() = default;
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void PowerSaveBlocker::UpdatePowerSaveBlocker() {
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if (wake_lock_types_.empty()) {
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if (is_wake_lock_active_) {
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GetWakeLock()->CancelWakeLock();
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is_wake_lock_active_ = false;
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}
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return;
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}
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// |WakeLockType::kPreventAppSuspension| keeps system active, but allows
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// screen to be turned off.
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// |WakeLockType::kPreventDisplaySleep| keeps system and screen active, has a
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// higher precedence level than |WakeLockType::kPreventAppSuspension|.
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//
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// Only the highest-precedence blocker type takes effect.
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device::mojom::WakeLockType new_lock_type =
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device::mojom::WakeLockType::kPreventAppSuspension;
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for (const auto& element : wake_lock_types_) {
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if (element.second == device::mojom::WakeLockType::kPreventDisplaySleep) {
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new_lock_type = device::mojom::WakeLockType::kPreventDisplaySleep;
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break;
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}
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}
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if (current_lock_type_ != new_lock_type) {
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GetWakeLock()->ChangeType(new_lock_type, base::DoNothing());
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current_lock_type_ = new_lock_type;
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}
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if (!is_wake_lock_active_) {
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GetWakeLock()->RequestWakeLock();
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is_wake_lock_active_ = true;
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}
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}
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device::mojom::WakeLock* PowerSaveBlocker::GetWakeLock() {
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if (!wake_lock_) {
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mojo::Remote<device::mojom::WakeLockProvider> wake_lock_provider;
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content::GetDeviceService().BindWakeLockProvider(
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wake_lock_provider.BindNewPipeAndPassReceiver());
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wake_lock_provider->GetWakeLockWithoutContext(
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device::mojom::WakeLockType::kPreventAppSuspension,
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device::mojom::WakeLockReason::kOther, ELECTRON_PRODUCT_NAME,
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wake_lock_.BindNewPipeAndPassReceiver());
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}
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return wake_lock_.get();
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}
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int PowerSaveBlocker::Start(device::mojom::WakeLockType type) {
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static int count = 0;
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wake_lock_types_[count] = type;
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UpdatePowerSaveBlocker();
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return count++;
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}
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bool PowerSaveBlocker::Stop(int id) {
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bool success = wake_lock_types_.erase(id) > 0;
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UpdatePowerSaveBlocker();
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return success;
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}
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bool PowerSaveBlocker::IsStarted(int id) {
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return wake_lock_types_.find(id) != wake_lock_types_.end();
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}
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// static
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gin::Handle<PowerSaveBlocker> PowerSaveBlocker::Create(v8::Isolate* isolate) {
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return gin::CreateHandle(isolate, new PowerSaveBlocker(isolate));
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}
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gin::ObjectTemplateBuilder PowerSaveBlocker::GetObjectTemplateBuilder(
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v8::Isolate* isolate) {
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return gin::Wrappable<PowerSaveBlocker>::GetObjectTemplateBuilder(isolate)
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.SetMethod("start", &PowerSaveBlocker::Start)
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.SetMethod("stop", &PowerSaveBlocker::Stop)
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.SetMethod("isStarted", &PowerSaveBlocker::IsStarted);
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}
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} // namespace api
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} // namespace electron
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namespace {
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void Initialize(v8::Local<v8::Object> exports,
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v8::Local<v8::Value> unused,
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v8::Local<v8::Context> context,
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void* priv) {
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v8::Isolate* isolate = context->GetIsolate();
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gin::Dictionary dict(isolate, exports);
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dict.Set("powerSaveBlocker",
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electron::api::PowerSaveBlocker::Create(isolate));
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}
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} // namespace
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NODE_LINKED_MODULE_CONTEXT_AWARE(electron_browser_power_save_blocker,
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Initialize)
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