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 } 47
