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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 MOJO_SERVICES_VIEW_MANAGER_IDS_H_ | 5 #ifndef MOJO_SERVICES_VIEW_MANAGER_IDS_H_ |
6 #define MOJO_SERVICES_VIEW_MANAGER_IDS_H_ | 6 #define MOJO_SERVICES_VIEW_MANAGER_IDS_H_ |
7 | 7 |
8 #include "mojo/services/public/cpp/view_manager/types.h" | 8 #include "mojo/services/public/cpp/view_manager/types.h" |
9 #include "mojo/services/public/cpp/view_manager/util.h" | 9 #include "mojo/services/public/cpp/view_manager/util.h" |
10 #include "mojo/services/view_manager/view_manager_export.h" | 10 #include "mojo/services/view_manager/view_manager_export.h" |
11 | 11 |
12 namespace mojo { | 12 namespace mojo { |
13 namespace service { | 13 namespace service { |
14 | 14 |
15 // Connection id is used to indicate no connection. That is, no | 15 // Connection id is used to indicate no connection. That is, no |
16 // ViewManagerServiceImpl ever gets this id. | 16 // ViewManagerServiceImpl ever gets this id. |
17 const ConnectionSpecificId kInvalidConnectionId = 0; | 17 const ConnectionSpecificId kInvalidConnectionId = 0; |
18 | 18 |
19 // TODO(sky): remove this, temporary while window manager API is in existing | 19 // TODO(sky): remove this, temporary while window manager API is in existing |
20 // api. | 20 // api. |
21 const ConnectionSpecificId kWindowManagerConnection = 1; | 21 const ConnectionSpecificId kWindowManagerConnection = 1; |
22 | 22 |
23 // Adds a bit of type safety to node ids. | |
24 struct MOJO_VIEW_MANAGER_EXPORT NodeId { | |
25 NodeId(ConnectionSpecificId connection_id, ConnectionSpecificId node_id) | |
26 : connection_id(connection_id), | |
27 node_id(node_id) {} | |
28 NodeId() : connection_id(0), node_id(0) {} | |
29 | |
30 bool operator==(const NodeId& other) const { | |
31 return other.connection_id == connection_id && | |
32 other.node_id == node_id; | |
33 } | |
34 | |
35 bool operator!=(const NodeId& other) const { | |
36 return !(*this == other); | |
37 } | |
38 | |
39 ConnectionSpecificId connection_id; | |
40 ConnectionSpecificId node_id; | |
41 }; | |
42 | |
43 // Adds a bit of type safety to view ids. | 23 // Adds a bit of type safety to view ids. |
44 struct MOJO_VIEW_MANAGER_EXPORT ViewId { | 24 struct MOJO_VIEW_MANAGER_EXPORT ViewId { |
45 ViewId(ConnectionSpecificId connection_id, ConnectionSpecificId view_id) | 25 ViewId(ConnectionSpecificId connection_id, ConnectionSpecificId view_id) |
46 : connection_id(connection_id), | 26 : connection_id(connection_id), |
47 view_id(view_id) {} | 27 view_id(view_id) {} |
48 ViewId() : connection_id(0), view_id(0) {} | 28 ViewId() : connection_id(0), view_id(0) {} |
49 | 29 |
50 bool operator==(const ViewId& other) const { | 30 bool operator==(const ViewId& other) const { |
51 return other.connection_id == connection_id && | 31 return other.connection_id == connection_id && |
52 other.view_id == view_id; | 32 other.view_id == view_id; |
53 } | 33 } |
54 | 34 |
55 bool operator!=(const ViewId& other) const { | 35 bool operator!=(const ViewId& other) const { |
56 return !(*this == other); | 36 return !(*this == other); |
57 } | 37 } |
58 | 38 |
59 ConnectionSpecificId connection_id; | 39 ConnectionSpecificId connection_id; |
60 ConnectionSpecificId view_id; | 40 ConnectionSpecificId view_id; |
61 }; | 41 }; |
62 | 42 |
63 // Functions for converting to/from structs and transport values. | |
64 inline NodeId NodeIdFromTransportId(Id id) { | |
65 return NodeId(HiWord(id), LoWord(id)); | |
66 } | |
67 | |
68 inline Id NodeIdToTransportId(const NodeId& id) { | |
69 return (id.connection_id << 16) | id.node_id; | |
70 } | |
71 | |
72 inline ViewId ViewIdFromTransportId(Id id) { | 43 inline ViewId ViewIdFromTransportId(Id id) { |
73 return ViewId(HiWord(id), LoWord(id)); | 44 return ViewId(HiWord(id), LoWord(id)); |
74 } | 45 } |
75 | 46 |
76 inline Id ViewIdToTransportId(const ViewId& id) { | 47 inline Id ViewIdToTransportId(const ViewId& id) { |
77 return (id.connection_id << 16) | id.view_id; | 48 return (id.connection_id << 16) | id.view_id; |
78 } | 49 } |
79 | 50 |
80 inline NodeId RootNodeId() { | 51 inline ViewId RootViewId() { |
81 return NodeId(kInvalidConnectionId, 1); | 52 return ViewId(kInvalidConnectionId, 1); |
82 } | 53 } |
83 | 54 |
84 // Returns a NodeId that is reserved to indicate no node. That is, no node will | 55 // Returns a ViewId that is reserved to indicate no view. That is, no view will |
85 // ever be created with this id. | 56 // ever be created with this id. |
86 inline NodeId InvalidNodeId() { | 57 inline ViewId InvalidViewId() { |
87 return NodeId(kInvalidConnectionId, 0); | 58 return ViewId(kInvalidConnectionId, 0); |
88 } | 59 } |
89 | 60 |
90 } // namespace service | 61 } // namespace service |
91 } // namespace mojo | 62 } // namespace mojo |
92 | 63 |
93 #endif // MOJO_SERVICES_VIEW_MANAGER_IDS_H_ | 64 #endif // MOJO_SERVICES_VIEW_MANAGER_IDS_H_ |
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