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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_THROTTLE_WINDOW_THROTTLE_OBSERVER_BASE_H_
#define CHROMEOS_ASH_COMPONENTS_THROTTLE_WINDOW_THROTTLE_OBSERVER_BASE_H_
#include "chromeos/ash/components/throttle/throttle_observer.h"
#include "base/component_export.h"
#include "ui/wm/public/activation_change_observer.h"
namespace content {
class BrowserContext;
}
namespace aura {
class Window;
}
namespace ash {
// Base class for locks that observe changes in window activation.
class COMPONENT_EXPORT(CHROMEOS_ASH_COMPONENTS_THROTTLE)
WindowThrottleObserverBase : public ThrottleObserver,
public wm::ActivationChangeObserver {
public:
explicit WindowThrottleObserverBase(const std::string& name);
WindowThrottleObserverBase(const WindowThrottleObserverBase&) = delete;
WindowThrottleObserverBase& operator=(const WindowThrottleObserverBase&) =
delete;
~WindowThrottleObserverBase() override = default;
// ThrottleObserver:
void StartObserving(content::BrowserContext* context,
const ObserverStateChangedCallback& callback) override;
void StopObserving() override;
// wm::ActivationChangeObserver:
void OnWindowActivated(ActivationReason reason,
aura::Window* gained_active,
aura::Window* lost_active) override;
protected:
// Returns true if the window activation should set the state to active, and
// false if the window activation should set state to inactive.
virtual bool ProcessWindowActivation(ActivationReason reason,
aura::Window* gained_active,
aura::Window* lost_active) = 0;
};
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_THROTTLE_WINDOW_THROTTLE_OBSERVER_BASE_H_
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