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Side by Side Diff: components/mus/ws/ids.h

Issue 1406153004: components/mus/public/interfaces View => Window (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Yet another rebase Created 5 years, 2 months ago
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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 COMPONENTS_MUS_WS_IDS_H_ 5 #ifndef COMPONENTS_MUS_WS_IDS_H_
6 #define COMPONENTS_MUS_WS_IDS_H_ 6 #define COMPONENTS_MUS_WS_IDS_H_
7 7
8 #include "components/mus/public/cpp/types.h" 8 #include "components/mus/public/cpp/types.h"
9 #include "components/mus/public/cpp/util.h" 9 #include "components/mus/public/cpp/util.h"
10 10
11 namespace mus { 11 namespace mus {
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 ConnectionSpecificId kInvalidConnectionId = 0; 15 const 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(ConnectionSpecificId connection_id, ConnectionSpecificId view_id) 19 ViewId(ConnectionSpecificId connection_id, ConnectionSpecificId window_id)
20 : connection_id(connection_id), view_id(view_id) {} 20 : connection_id(connection_id), window_id(window_id) {}
21 ViewId() : connection_id(0), view_id(0) {} 21 ViewId() : connection_id(0), window_id(0) {}
22 22
23 bool operator==(const ViewId& other) const { 23 bool operator==(const ViewId& other) const {
24 return other.connection_id == connection_id && other.view_id == view_id; 24 return other.connection_id == connection_id && other.window_id == window_id;
25 } 25 }
26 26
27 bool operator!=(const ViewId& other) const { return !(*this == other); } 27 bool operator!=(const ViewId& other) const { return !(*this == other); }
28 28
29 bool operator<(const ViewId& other) const { 29 bool operator<(const ViewId& other) const {
30 if (connection_id == other.connection_id) 30 if (connection_id == other.connection_id)
31 return view_id < other.view_id; 31 return window_id < other.window_id;
32 32
33 return connection_id < other.connection_id; 33 return connection_id < other.connection_id;
34 } 34 }
35 35
36 ConnectionSpecificId connection_id; 36 ConnectionSpecificId connection_id;
37 ConnectionSpecificId view_id; 37 ConnectionSpecificId window_id;
38 }; 38 };
39 39
40 inline ViewId ViewIdFromTransportId(Id id) { 40 inline ViewId ViewIdFromTransportId(Id id) {
41 return ViewId(HiWord(id), LoWord(id)); 41 return ViewId(HiWord(id), LoWord(id));
42 } 42 }
43 43
44 inline Id ViewIdToTransportId(const ViewId& id) { 44 inline Id ViewIdToTransportId(const ViewId& id) {
45 return (id.connection_id << 16) | id.view_id; 45 return (id.connection_id << 16) | id.window_id;
46 } 46 }
47 47
48 // Returns a ViewId that is reserved to indicate no view. That is, no view will 48 // Returns a ViewId that is reserved to indicate no view. That is, no view will
49 // ever be created with this id. 49 // ever be created with this id.
50 inline ViewId InvalidViewId() { 50 inline ViewId InvalidViewId() {
51 return ViewId(kInvalidConnectionId, 0); 51 return ViewId(kInvalidConnectionId, 0);
52 } 52 }
53 53
54 // Returns a root view id with a given index offset. 54 // Returns a root view id with a given index offset.
55 inline ViewId RootViewId(uint16_t index) { 55 inline ViewId RootViewId(uint16_t index) {
56 return ViewId(kInvalidConnectionId, 2 + index); 56 return ViewId(kInvalidConnectionId, 2 + index);
57 } 57 }
58 58
59 } // namespace mus 59 } // namespace mus
60 60
61 #endif // COMPONENTS_MUS_WS_IDS_H_ 61 #endif // COMPONENTS_MUS_WS_IDS_H_
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