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// Copyright (c) 2012 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 REMOTING_HOST_CURTAIN_MODE_H_
#define REMOTING_HOST_CURTAIN_MODE_H_
#include <string>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/compiler_specific.h"
namespace remoting {
class ChromotingHost;
class CurtainMode {
public:
virtual ~CurtainMode() {}
// Creates a CurtainMode object, with callbacks to be invoked when the
// switched-out session is switched back to the console, or in case of errors
// activating the curtain. Typically, remote clients should be disconnected in
// both cases: for errors, because the privacy guarantee of curtain-mode
// cannot be honoured; for switch-in, to ensure that only one connection
// (console or remote) exists to a session.
static scoped_ptr<CurtainMode> Create(
const base::Closure& on_session_activate,
const base::Closure& on_error);
// Activate or deactivate curtain mode.
// If activated is true (meaning a remote client has just logged in), the
// implementation must immediately activate the curtain, or call on_error if
// it cannot do so. If a console user logs in while the curtain is activated,
// the implementation must call on_session_activate (from any thread).
// If activated is false (meaning the remote client has disconnected), the
// implementation must not remove the curtain (since at this point we can make
// no guarantees about whether the user intended to leave the console locked),
// and must not call on_session_activate when the console user logs in.
virtual void SetActivated(bool activated) = 0;
protected:
CurtainMode() {}
private:
DISALLOW_COPY_AND_ASSIGN(CurtainMode);
};
} // namespace remoting
#endif
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