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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_VIEW_MANAGER_ACCESS_POLICY_H_ | |
6 #define COMPONENTS_VIEW_MANAGER_ACCESS_POLICY_H_ | |
7 | |
8 #include "components/view_manager/ids.h" | |
9 #include "components/view_manager/public/interfaces/view_manager_constants.mojom
.h" | |
10 | |
11 namespace view_manager { | |
12 | |
13 class ServerView; | |
14 | |
15 // AccessPolicy is used by ViewTreeImpl to determine what a connection is | |
16 // allowed to do. | |
17 class AccessPolicy { | |
18 public: | |
19 virtual ~AccessPolicy() {} | |
20 | |
21 // Unless otherwise mentioned all arguments have been validated. That is the | |
22 // |view| arguments are non-null unless otherwise stated (eg CanSetView() is | |
23 // allowed to take a NULL view). | |
24 virtual bool CanRemoveViewFromParent(const ServerView* view) const = 0; | |
25 virtual bool CanAddView(const ServerView* parent, | |
26 const ServerView* child) const = 0; | |
27 virtual bool CanReorderView(const ServerView* view, | |
28 const ServerView* relative_view, | |
29 mojo::OrderDirection direction) const = 0; | |
30 virtual bool CanDeleteView(const ServerView* view) const = 0; | |
31 virtual bool CanGetViewTree(const ServerView* view) const = 0; | |
32 // Used when building a view tree (GetViewTree()) to decide if we should | |
33 // descend into |view|. | |
34 virtual bool CanDescendIntoViewForViewTree(const ServerView* view) const = 0; | |
35 virtual bool CanEmbed(const ServerView* view) const = 0; | |
36 virtual bool CanChangeViewVisibility(const ServerView* view) const = 0; | |
37 virtual bool CanSetViewSurfaceId(const ServerView* view) const = 0; | |
38 virtual bool CanSetViewBounds(const ServerView* view) const = 0; | |
39 virtual bool CanSetViewProperties(const ServerView* view) const = 0; | |
40 virtual bool CanSetViewTextInputState(const ServerView* view) const = 0; | |
41 virtual bool CanSetFocus(const ServerView* view) const = 0; | |
42 virtual bool CanSetAccessPolicy(const ServerView* view) const = 0; | |
43 | |
44 // Returns whether the connection should notify on a hierarchy change. | |
45 // |new_parent| and |old_parent| are initially set to the new and old parents | |
46 // but may be altered so that the client only sees a certain set of views. | |
47 virtual bool ShouldNotifyOnHierarchyChange( | |
48 const ServerView* view, | |
49 const ServerView** new_parent, | |
50 const ServerView** old_parent) const = 0; | |
51 | |
52 // Returns the view to supply to the client when focus changes to |focused|. | |
53 virtual const ServerView* GetViewForFocusChange( | |
54 const ServerView* focused) = 0; | |
55 }; | |
56 | |
57 } // namespace view_manager | |
58 | |
59 #endif // COMPONENTS_VIEW_MANAGER_ACCESS_POLICY_H_ | |
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