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 MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_H_ 6 #define MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_H_ 7 8 #include "mojo/services/public/interfaces/view_manager/view_manager_constants.mojom.h" 9 #include "mojo/services/view_manager/ids.h" 10 11 namespace mojo { 12 namespace service { 13 14 class ServerView; 15 16 // AccessPolicy is used by ViewManagerServiceImpl to determine what a connection 17 // is allowed to do. 18 class AccessPolicy { 19 public: 20 virtual ~AccessPolicy() {} 21 22 // Unless otherwise mentioned all arguments have been validated. That is the 23 // |view| arguments are non-null unless otherwise stated (eg CanSetView() is 24 // allowed to take a NULL view). 25 virtual bool CanRemoveViewFromParent(const ServerView* view) const = 0; 26 virtual bool CanAddView(const ServerView* parent, 27 const ServerView* child) const = 0; 28 virtual bool CanReorderView(const ServerView* view, 29 const ServerView* relative_view, 30 OrderDirection direction) const = 0; 31 virtual bool CanDeleteView(const ServerView* view) const = 0; 32 virtual bool CanGetViewTree(const ServerView* view) const = 0; 33 // Used when building a view tree (GetViewTree()) to decide if we should 34 // descend into |view|. 35 virtual bool CanDescendIntoViewForViewTree(const ServerView* view) const = 0; 36 virtual bool CanEmbed(const ServerView* view) const = 0; 37 virtual bool CanChangeViewVisibility(const ServerView* view) const = 0; 38 virtual bool CanSetViewSurfaceId(const ServerView* view) const = 0; 39 virtual bool CanSetViewBounds(const ServerView* view) const = 0; 40 41 // Returns whether the connection should notify on a hierarchy change. 42 // |new_parent| and |old_parent| are initially set to the new and old parents 43 // but may be altered so that the client only sees a certain set of views. 44 virtual bool ShouldNotifyOnHierarchyChange( 45 const ServerView* view, 46 const ServerView** new_parent, 47 const ServerView** old_parent) const = 0; 48 }; 49 50 } // namespace service 51 } // namespace mojo 52 53 #endif // MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_H_ 54
