| // Copyright 2015 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| var SelectionBroker = function() { |
| this.brokers = []; |
| this.dispatching = false; |
| this.lastDispatchingHandler = null; |
| }; |
| |
| SelectionBroker.prototype.addSelectionHandler = function(handler) { |
| this.brokers.push(handler); |
| } |
| |
| SelectionBroker.prototype.select = function(from, ranges, selected) { |
| if (!this.dispatching) { |
| this.lastDispatchingHandler = from; |
| try { |
| this.dispatching = true; |
| for (var b of this.brokers) { |
| if (b != from) { |
| b.brokeredSelect(ranges, selected); |
| } |
| } |
| } |
| finally { |
| this.dispatching = false; |
| } |
| } |
| } |
| |
| SelectionBroker.prototype.clear = function(from) { |
| this.lastDispatchingHandler = null; |
| if (!this.dispatching) { |
| try { |
| this.dispatching = true; |
| this.brokers.forEach(function(b) { |
| if (b != from) { |
| b.brokeredClear(); |
| } |
| }); |
| } finally { |
| this.dispatching = false; |
| } |
| } |
| } |