1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef ASH_DISPLAY_PROJECTING_OBSERVER_CHROMEOS_H_ 6 #define ASH_DISPLAY_PROJECTING_OBSERVER_CHROMEOS_H_ 7 8 #include "ash/ash_export.h" 9 #include "ui/display/chromeos/display_configurator.h" 10 11 namespace ash { 12 13 class ASH_EXPORT ProjectingObserver : public ui::DisplayConfigurator::Observer { 14 public: 15 ProjectingObserver(); 16 virtual ~ProjectingObserver(); 17 18 // Called when a casting session is started or stopped. 19 void OnCastingSessionStartedOrStopped(bool started); 20 21 // DisplayConfigurator::Observer implementation: 22 virtual void OnDisplayModeChanged( 23 const ui::DisplayConfigurator::DisplayStateList& outputs) OVERRIDE; 24 25 private: 26 // Sends the current projecting state to power manager. 27 void SetIsProjecting(); 28 29 // True if at least one output is internal. This value is updated when 30 // |OnDisplayModeChanged| is called. 31 bool has_internal_output_; 32 33 // Keeps track of the number of connected outputs. 34 int output_count_; 35 36 // Number of outstanding casting sessions. 37 int casting_session_count_; 38 39 DISALLOW_COPY_AND_ASSIGN(ProjectingObserver); 40 }; 41 42 } // namespace ash 43 44 #endif // ASH_DISPLAY_PROJECTING_OBSERVER_CHROMEOS_H_ 45
