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58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
// Copyright 2025 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_APP_LIFECYCLE_MONITOR_H_
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#define THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_APP_LIFECYCLE_MONITOR_H_
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#include <functional>
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#include <utility>
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namespace nearby {
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namespace api {
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class AppLifecycleMonitor {
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public:
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// The state of the app lifecycle. The state transition is kBackground ->
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// kInactive -> kActive. Foreground is an umbrella term that describes the app
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// when it is either Inactive or Active.
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enum class AppLifecycleState {
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// The app is active when it starts to receive events.
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kActive,
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// The app is inactive but is still not in background.
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kInactive,
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// The app is background.
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kBackground,
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};
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// Registers callbacks for connection changes. The callbacks will be called
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// when device is connected to a LAN network or when the device is connected
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// to internet.
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explicit AppLifecycleMonitor(
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std::function<void(AppLifecycleState)> state_updated_callback)
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: state_updated_callback_(std::move(state_updated_callback)) {}
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virtual ~AppLifecycleMonitor() = default;
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protected:
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// The callback to be called when the app lifecycle state is updated. In
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// order to make it possible to be called from different methods, use
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// std::function instead of absl::AnyInvocable.
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std::function<void(AppLifecycleState)> state_updated_callback_;
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};
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} // namespace api
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_APP_LIFECYCLE_MONITOR_H_
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