Lines Matching full:observer
25 // up/down the NFC adapter and its Observer interface allows users to get
38 class Observer {
40 virtual ~Observer() {}
61 // The observer can use this method to take further action on the tag object
75 // available for peer-to-peer communication over NFC. The observer can use
98 // multiple adapters, check the |adapter| parameter of observer methods to
100 virtual void AddObserver(Observer* observer) = 0;
101 virtual void RemoveObserver(Observer* observer) = 0;
