OLD | NEW |
1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COMPONENTS_VIEW_MANAGER_IDS_H_ | 5 #ifndef COMPONENTS_MUS_IDS_H_ |
6 #define COMPONENTS_VIEW_MANAGER_IDS_H_ | 6 #define COMPONENTS_MUS_IDS_H_ |
7 | 7 |
8 #include "components/view_manager/public/cpp/types.h" | 8 #include "components/mus/public/cpp/types.h" |
9 #include "components/view_manager/public/cpp/util.h" | 9 #include "components/mus/public/cpp/util.h" |
10 | 10 |
11 namespace view_manager { | 11 namespace view_manager { |
12 | 12 |
13 // Connection id is used to indicate no connection. That is, no ViewTreeImpl | 13 // Connection id is used to indicate no connection. That is, no ViewTreeImpl |
14 // ever gets this id. | 14 // ever gets this id. |
15 const mojo::ConnectionSpecificId kInvalidConnectionId = 0; | 15 const mojo::ConnectionSpecificId kInvalidConnectionId = 0; |
16 | 16 |
17 // Adds a bit of type safety to view ids. | 17 // Adds a bit of type safety to view ids. |
18 struct ViewId { | 18 struct ViewId { |
19 ViewId(mojo::ConnectionSpecificId connection_id, | 19 ViewId(mojo::ConnectionSpecificId connection_id, |
20 mojo::ConnectionSpecificId view_id) | 20 mojo::ConnectionSpecificId view_id) |
21 : connection_id(connection_id), view_id(view_id) {} | 21 : connection_id(connection_id), view_id(view_id) {} |
22 ViewId() : connection_id(0), view_id(0) {} | 22 ViewId() : connection_id(0), view_id(0) {} |
23 | 23 |
24 bool operator==(const ViewId& other) const { | 24 bool operator==(const ViewId& other) const { |
25 return other.connection_id == connection_id && | 25 return other.connection_id == connection_id && other.view_id == view_id; |
26 other.view_id == view_id; | |
27 } | 26 } |
28 | 27 |
29 bool operator!=(const ViewId& other) const { | 28 bool operator!=(const ViewId& other) const { return !(*this == other); } |
30 return !(*this == other); | |
31 } | |
32 | 29 |
33 mojo::ConnectionSpecificId connection_id; | 30 mojo::ConnectionSpecificId connection_id; |
34 mojo::ConnectionSpecificId view_id; | 31 mojo::ConnectionSpecificId view_id; |
35 }; | 32 }; |
36 | 33 |
37 inline ViewId ViewIdFromTransportId(mojo::Id id) { | 34 inline ViewId ViewIdFromTransportId(mojo::Id id) { |
38 return ViewId(mojo::HiWord(id), mojo::LoWord(id)); | 35 return ViewId(mojo::HiWord(id), mojo::LoWord(id)); |
39 } | 36 } |
40 | 37 |
41 inline mojo::Id ViewIdToTransportId(const ViewId& id) { | 38 inline mojo::Id ViewIdToTransportId(const ViewId& id) { |
42 return (id.connection_id << 16) | id.view_id; | 39 return (id.connection_id << 16) | id.view_id; |
43 } | 40 } |
44 | 41 |
45 // Returns a ViewId that is reserved to indicate no view. That is, no view will | 42 // Returns a ViewId that is reserved to indicate no view. That is, no view will |
46 // ever be created with this id. | 43 // ever be created with this id. |
47 inline ViewId InvalidViewId() { | 44 inline ViewId InvalidViewId() { |
48 return ViewId(kInvalidConnectionId, 0); | 45 return ViewId(kInvalidConnectionId, 0); |
49 } | 46 } |
50 | 47 |
51 // Returns a root view id with a given index offset. | 48 // Returns a root view id with a given index offset. |
52 inline ViewId RootViewId(uint16_t index) { | 49 inline ViewId RootViewId(uint16_t index) { |
53 return ViewId(kInvalidConnectionId, 2 + index); | 50 return ViewId(kInvalidConnectionId, 2 + index); |
54 } | 51 } |
55 | 52 |
56 } // namespace view_manager | 53 } // namespace view_manager |
57 | 54 |
58 #endif // COMPONENTS_VIEW_MANAGER_IDS_H_ | 55 #endif // COMPONENTS_MUS_IDS_H_ |
OLD | NEW |