services/view_manager/access_policy_delegate.h

// 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 SERVICES_VIEW_MANAGER_ACCESS_POLICY_DELEGATE_H_
#define SERVICES_VIEW_MANAGER_ACCESS_POLICY_DELEGATE_H_

#include <vector>

#include "base/containers/hash_tables.h"
#include "services/view_manager/ids.h"

namespace view_manager {

class ServerView;

// Delegate used by the AccessPolicy implementations to get state.
class AccessPolicyDelegate {
 public:
  // Returns true if |id| is the root of the connection.
  virtual bool IsRootForAccessPolicy(const ViewId& id) const = 0;

  // Returns true if |view| has been exposed to the client.
  virtual bool IsViewKnownForAccessPolicy(const ServerView* view) const = 0;

  // Returns true if Embed(view) has been invoked on |view|.
  virtual bool IsViewRootOfAnotherConnectionForAccessPolicy(
      const ServerView* view) const = 0;

 protected:
  virtual ~AccessPolicyDelegate() {}
};

}  // namespace view_manager

#endif  // SERVICES_VIEW_MANAGER_ACCESS_POLICY_DELEGATE_H_