OLD | NEW |
(Empty) | |
| 1 // Copyright 2017 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 define("mojo/public/js/lib/interface_endpoint_handle", [ |
| 6 "mojo/public/js/interface_types", |
| 7 "timer", |
| 8 ], function(types, timer) { |
| 9 |
| 10 var AssociationEvent = { |
| 11 // The interface has been associated with a message pipe. |
| 12 ASSOCIATED: 'associated', |
| 13 // The peer of this object has been closed before association. |
| 14 PEER_CLOSED_BEFORE_ASSOCIATION: 'peer_closed_before_association' |
| 15 }; |
| 16 |
| 17 function State(interfaceId, associatedGroupController) { |
| 18 if (interfaceId === undefined) { |
| 19 interfaceId = types.kInvalidInterfaceId; |
| 20 } |
| 21 |
| 22 this.interfaceId = interfaceId; |
| 23 this.associatedGroupController = associatedGroupController; |
| 24 this.pendingAssociation = false; |
| 25 this.disconnectReason = null; |
| 26 this.peerState_ = null; |
| 27 this.associationEventHandler_ = null; |
| 28 } |
| 29 |
| 30 State.prototype.initPendingState = function(peer) { |
| 31 this.pendingAssociation = true; |
| 32 this.peerState_ = peer; |
| 33 }; |
| 34 |
| 35 State.prototype.isValid = function() { |
| 36 return this.pendingAssociation || |
| 37 types.isValidInterfaceId(this.interfaceId); |
| 38 }; |
| 39 |
| 40 State.prototype.close = function(disconnectReason) { |
| 41 var cachedGroupController; |
| 42 var cachedPeerState; |
| 43 var cachedId = types.kInvalidInterfaceId; |
| 44 |
| 45 if (!this.pendingAssociation) { |
| 46 if (types.isValidInterfaceId(this.interfaceId)) { |
| 47 cachedGroupController = this.associatedGroupController; |
| 48 this.associatedGroupController = null; |
| 49 cachedId = this.interfaceId; |
| 50 this.interfaceId = types.kInvalidInterfaceId; |
| 51 } |
| 52 } else { |
| 53 this.pendingAssociation = false; |
| 54 cachedPeerState = this.peerState_; |
| 55 this.peerState_ = null; |
| 56 } |
| 57 |
| 58 if (cachedGroupController) { |
| 59 cachedGroupController.closeEndpointHandle(cachedId, |
| 60 disconnectReason); |
| 61 } else if (cachedPeerState) { |
| 62 cachedPeerState.onPeerClosedBeforeAssociation(disconnectReason); |
| 63 } |
| 64 }; |
| 65 |
| 66 State.prototype.runAssociationEventHandler = function(associationEvent) { |
| 67 if (this.associationEventHandler_) { |
| 68 var handler = this.associationEventHandler_; |
| 69 this.associationEventHandler_ = null; |
| 70 handler(associationEvent); |
| 71 } |
| 72 }; |
| 73 |
| 74 State.prototype.setAssociationEventHandler = function(handler) { |
| 75 if (!this.pendingAssociation && |
| 76 !types.isValidInterfaceId(this.interfaceId)) { |
| 77 return; |
| 78 } |
| 79 |
| 80 if (!handler) { |
| 81 this.associationEventHandler_ = null; |
| 82 return; |
| 83 } |
| 84 |
| 85 this.associationEventHandler_ = handler; |
| 86 if (!this.pendingAssociation) { |
| 87 timer.createOneShot(0, this.runAssociationEventHandler.bind(this, |
| 88 AssociationEvent.ASSOCIATED)); |
| 89 } else if (!this.peerState_) { |
| 90 timer.createOneShot(0, this.runAssociationEventHandler.bind(this, |
| 91 AssociationEvent.PEER_CLOSED_BEFORE_ASSOCIATION)); |
| 92 } |
| 93 }; |
| 94 |
| 95 State.prototype.onAssociated = function(interfaceId, |
| 96 associatedGroupController) { |
| 97 if (!this.pendingAssociation) { |
| 98 return; |
| 99 } |
| 100 |
| 101 this.pendingAssociation = false; |
| 102 this.peerState_ = null; |
| 103 this.interfaceId = interfaceId; |
| 104 this.associatedGroupController = associatedGroupController; |
| 105 this.runAssociationEventHandler(AssociationEvent.ASSOCIATED); |
| 106 }; |
| 107 |
| 108 State.prototype.onPeerClosedBeforeAssociation = function(disconnectReason) { |
| 109 if (!this.pendingAssociation) { |
| 110 return; |
| 111 } |
| 112 |
| 113 this.peerState_ = null; |
| 114 this.disconnectReason = disconnectReason; |
| 115 |
| 116 this.runAssociationEventHandler( |
| 117 AssociationEvent.PEER_CLOSED_BEFORE_ASSOCIATION); |
| 118 }; |
| 119 |
| 120 function InterfaceEndpointHandle(interfaceId, associatedGroupController) { |
| 121 this.state_ = new State(interfaceId, associatedGroupController); |
| 122 } |
| 123 |
| 124 InterfaceEndpointHandle.prototype.isValid = function() { |
| 125 return this.state_.isValid(); |
| 126 }; |
| 127 |
| 128 InterfaceEndpointHandle.prototype.pendingAssociation = function() { |
| 129 return this.state_.pendingAssociation; |
| 130 }; |
| 131 |
| 132 InterfaceEndpointHandle.prototype.id = function() { |
| 133 return this.state_.interfaceId; |
| 134 }; |
| 135 |
| 136 InterfaceEndpointHandle.prototype.groupController = function() { |
| 137 return this.state_.associatedGroupController; |
| 138 }; |
| 139 |
| 140 InterfaceEndpointHandle.prototype.disconnectReason = function() { |
| 141 return this.state_.disconnectReason; |
| 142 }; |
| 143 |
| 144 InterfaceEndpointHandle.prototype.setAssociationEventHandler = function( |
| 145 handler) { |
| 146 this.state_.setAssociationEventHandler(handler); |
| 147 }; |
| 148 |
| 149 InterfaceEndpointHandle.prototype.reset = function(reason) { |
| 150 this.state_.close(reason); |
| 151 this.state_ = new State(); |
| 152 }; |
| 153 |
| 154 var exports = {}; |
| 155 exports.InterfaceEndpointHandle = InterfaceEndpointHandle; |
| 156 |
| 157 return exports; |
| 158 }); |
OLD | NEW |