1 /* 2 * Copyright (C) 2009 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 WebInspector.Callback = function() 32 { 33 this._lastCallbackId = 1; 34 this._callbacks = {}; 35 } 36 37 WebInspector.Callback.prototype = { 38 wrap: function(callback) 39 { 40 var callbackId = this._lastCallbackId++; 41 this._callbacks[callbackId] = callback || function() {}; 42 return callbackId; 43 }, 44 45 processCallback: function(callbackId, opt_vararg) 46 { 47 var args = Array.prototype.slice.call(arguments, 1); 48 var callback = this._callbacks[callbackId]; 49 callback.apply(null, args); 50 delete this._callbacks[callbackId]; 51 } 52 } 53 54 WebInspector.Callback._INSTANCE = new WebInspector.Callback(); 55 WebInspector.Callback.wrap = WebInspector.Callback._INSTANCE.wrap.bind(WebInspector.Callback._INSTANCE); 56 WebInspector.Callback.processCallback = WebInspector.Callback._INSTANCE.processCallback.bind(WebInspector.Callback._INSTANCE); 57
