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| 1 // Copyright 2015 the V8 project 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 var SelectionBroker = function() { |
| 6 this.brokers = []; |
| 7 this.dispatching = false; |
| 8 this.lastDispatchingHandler = null; |
| 9 }; |
| 10 |
| 11 SelectionBroker.prototype.addSelectionHandler = function(handler) { |
| 12 this.brokers.push(handler); |
| 13 } |
| 14 |
| 15 SelectionBroker.prototype.select = function(from, ranges, selected) { |
| 16 if (!this.dispatching) { |
| 17 this.lastDispatchingHandler = from; |
| 18 try { |
| 19 this.dispatching = true; |
| 20 for (var b of this.brokers) { |
| 21 if (b != from) { |
| 22 b.brokeredSelect(ranges, selected); |
| 23 } |
| 24 } |
| 25 } |
| 26 finally { |
| 27 this.dispatching = false; |
| 28 } |
| 29 } |
| 30 } |
| 31 |
| 32 SelectionBroker.prototype.clear = function(from) { |
| 33 this.lastDispatchingHandler = null; |
| 34 if (!this.dispatching) { |
| 35 try { |
| 36 this.dispatching = true; |
| 37 this.brokers.forEach(function(b) { |
| 38 if (b != from) { |
| 39 b.brokeredClear(); |
| 40 } |
| 41 }); |
| 42 } finally { |
| 43 this.dispatching = false; |
| 44 } |
| 45 } |
| 46 } |
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