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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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