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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "InputListener.h"
namespace android {
/**
* Base interface for an InputListener stage.
* Blocks unintentional input events. Not thread safe. Must be called from the same
* thread. All work is performed on the calling threads.
*/
class UnwantedInteractionBlockerInterface : public InputListenerInterface {
public:
/* Notifies the input reader policy that some input devices have changed
* and provides information about all current input devices.
* Important! This call should happen on the same thread as the calls to the
* InputListenerInterface methods.
* That is, same thread should call 'notifyMotion' and 'notifyInputDevicesChanged' and
* 'notifyDeviceReset'. If this architecture changes, we will need to make the implementation
* of this interface thread-safe.
*/
virtual void notifyInputDevicesChanged(const std::vector<InputDeviceInfo>& inputDevices) = 0;
/**
* Dump the state of the interaction blocker.
* This method may be called on any thread (usually by the input manager on a binder thread).
*/
virtual void dump(std::string& dump) = 0;
/* Called by the heatbeat to ensures that the blocker has not deadlocked. */
virtual void monitor() = 0;
UnwantedInteractionBlockerInterface() {}
~UnwantedInteractionBlockerInterface() override {}
};
} // namespace android
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