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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_DISPLAY_PROJECTING_OBSERVER_CHROMEOS_H_
#define ASH_DISPLAY_PROJECTING_OBSERVER_CHROMEOS_H_
#include "ash/ash_export.h"
#include "ui/display/chromeos/display_configurator.h"
namespace ash {
class ASH_EXPORT ProjectingObserver : public ui::DisplayConfigurator::Observer {
public:
ProjectingObserver();
virtual ~ProjectingObserver();
// Called when a casting session is started or stopped.
void OnCastingSessionStartedOrStopped(bool started);
// DisplayConfigurator::Observer implementation:
virtual void OnDisplayModeChanged(
const ui::DisplayConfigurator::DisplayStateList& outputs) override;
private:
// Sends the current projecting state to power manager.
void SetIsProjecting();
// True if at least one output is internal. This value is updated when
// |OnDisplayModeChanged| is called.
bool has_internal_output_;
// Keeps track of the number of connected outputs.
int output_count_;
// Number of outstanding casting sessions.
int casting_session_count_;
DISALLOW_COPY_AND_ASSIGN(ProjectingObserver);
};
} // namespace ash
#endif // ASH_DISPLAY_PROJECTING_OBSERVER_CHROMEOS_H_
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