components/mus/access_policy_delegate.h

   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 COMPONENTS_MUS_ACCESS_POLICY_DELEGATE_H_
   6 #define COMPONENTS_MUS_ACCESS_POLICY_DELEGATE_H_
   7
   8 #include <vector>
   9
  10 #include "base/containers/hash_tables.h"
  11 #include "components/mus/ids.h"
  12
  13 namespace mus {
  14
  15 class ServerView;
  16
  17 // Delegate used by the AccessPolicy implementations to get state.
  18 class AccessPolicyDelegate {
  19  public:
  20   // Returns true if |id| is the root of the connection.
  21   virtual bool IsRootForAccessPolicy(const ViewId& id) const = 0;
  22
  23   // Returns true if |view| has been exposed to the client.
  24   virtual bool IsViewKnownForAccessPolicy(const ServerView* view) const = 0;
  25
  26   // Returns true if Embed(view) has been invoked on |view|.
  27   virtual bool IsViewRootOfAnotherConnectionForAccessPolicy(
  28       const ServerView* view) const = 0;
  29
  30   // Returns true if SetEmbedRoot() was invoked and |view| is a descendant of
  31   // the root of the connection.
  32   virtual bool IsDescendantOfEmbedRoot(const ServerView* view) = 0;
  33
  34  protected:
  35   virtual ~AccessPolicyDelegate() {}
  36 };
  37
  38 }  // namespace mus
  39
  40 #endif  // COMPONENTS_MUS_ACCESS_POLICY_DELEGATE_H_