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mojo/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 "mojo/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_