mirror of
https://github.com/kidfromjupiter/nearby.git
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88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
// Copyright 2020 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_PRESENCE_SCAN_CALLBACK_H_
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#define THIRD_PARTY_NEARBY_PRESENCE_SCAN_CALLBACK_H_
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#include <functional>
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#include "presence/presence_device.h"
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#include "presence/status.h"
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namespace nearby {
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namespace presence {
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// Holds the callback of stop scan for client to invoke later.
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// TODO(b/254895067) Rework status for absl::Status
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class ScanSession {
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public:
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ScanSession()
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: stop_scan_callback_(
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[]() { return Status{Status::Value::kNotImplemented}; }) {}
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explicit ScanSession(std::function<Status(void)> stop_scan_callback)
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: stop_scan_callback_(stop_scan_callback) {}
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Status StopScan() {
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return stop_scan_callback_();
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}
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private:
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// Nearby library would provide the implementation of this callback in
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// runtime. Assigning with a default value NotImplemented to surface potential
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// issue where library failed to provide the implementation.
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std::function<Status(void)> stop_scan_callback_;
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};
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// Callers would provide the implementation of these callbacks. If callers
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// don't need these signal updates, they can skip with the provided default
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// empty functions.
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struct ScanCallback {
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// Updates client with the result of start scanning.
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std::function<void(Status)> start_scan_cb = [](Status) {};
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// Reports a {@link PresenceDevice} being discovered.
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std::function<void(PresenceDevice)> on_discovered_cb = [](PresenceDevice) {};
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// Reports a {@link PresenceDevice} information(distance, and etc)
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// changed.
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std::function<void(PresenceDevice)> on_updated_cb = [](PresenceDevice) {};
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// Reports a {@link PresenceDevice} is no longer within range.
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std::function<void(PresenceDevice)> on_lost_cb = [](PresenceDevice) {};
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};
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/**
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* Holds the callback of stop broadcast for client to invoke later.
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*/
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struct BroadcastSession {
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// Nearby library would provide the implementation of this callback in
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// runtime. Assiging with a default value NotImplemented to surface potential
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// issue where library failed to provide the implementation.
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std::function<Status(void)> stop_broadcast_callback = []() {
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return Status{Status::Value::kNotImplemented};
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};
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};
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// Callers would provide the implementation of these callbacks. If callers
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// don't need these signal updates, they can skip with the provided default
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// empty functions.
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struct BroadcastCallback {
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std::function<void(Status)> start_broadcast_cb = [](Status) {};
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};
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} // namespace presence
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_PRESENCE_SCAN_CALLBACK_H_
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