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// An interface of session manager of Mozc server.

#ifndef MOZC_SESSION_SESSION_HANDLER_INTERFACE_H_
#define MOZC_SESSION_SESSION_HANDLER_INTERFACE_H_

#include "base/port.h"

namespace mozc {

namespace commands {
class Command;
}  // namespace commands

namespace session {
class SessionObserverInterface;
}  // namespace session

class SessionHandlerInterface {
 public:
  SessionHandlerInterface() {}
  virtual ~SessionHandlerInterface() {}

  // Returns true if SessionHandle is available.
  virtual bool IsAvailable() const = 0;

  virtual bool EvalCommand(commands::Command *command) = 0;

  // Starts watch dog timer to cleanup sessions.
  virtual bool StartWatchDog() = 0;

  virtual void AddObserver(
      session::SessionObserverInterface *observer) = 0;

 private:
  DISALLOW_COPY_AND_ASSIGN(SessionHandlerInterface);
};

}  // namespace mozc
#endif  // MOZC_SESSION_SESSION_HANDLER_INTERFACE_H_