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| 1 /* |
| 2 * Copyright (C) 2008 Apple 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 |
| 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the |
| 11 * documentation and/or other materials provided with the distribution. |
| 12 * |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 */ |
| 25 |
| 26 WebInspector.Object = function() { |
| 27 } |
| 28 |
| 29 WebInspector.Object.prototype = { |
| 30 addEventListener: function(eventType, listener, thisObject) { |
| 31 if (!("_listeners" in this)) |
| 32 this._listeners = {}; |
| 33 if (!(eventType in this._listeners)) |
| 34 this._listeners[eventType] = []; |
| 35 this._listeners[eventType].push({ thisObject: thisObject, listener: list
ener }); |
| 36 }, |
| 37 |
| 38 removeEventListener: function(eventType, listener, thisObject) { |
| 39 if (!("_listeners" in this) || !(eventType in this._listeners)) |
| 40 return; |
| 41 var listeners = this._listeners[eventType]; |
| 42 for (var i = 0; i < listeners.length; ++i) { |
| 43 if (listener && listeners[i].listener === listener && listeners[i].t
hisObject === thisObject) |
| 44 listeners.splice(i, 1); |
| 45 else if (!listener && thisObject && listeners[i].thisObject === this
Object) |
| 46 listeners.splice(i, 1); |
| 47 } |
| 48 |
| 49 if (!listeners.length) |
| 50 delete this._listeners[eventType]; |
| 51 }, |
| 52 |
| 53 dispatchEventToListeners: function(eventType) { |
| 54 if (!("_listeners" in this) || !(eventType in this._listeners)) |
| 55 return; |
| 56 |
| 57 var stoppedPropagation = false; |
| 58 |
| 59 function stopPropagation() |
| 60 { |
| 61 stoppedPropagation = true; |
| 62 } |
| 63 |
| 64 function preventDefault() |
| 65 { |
| 66 this.defaultPrevented = true; |
| 67 } |
| 68 |
| 69 var event = {target: this, type: eventType, defaultPrevented: false}; |
| 70 event.stopPropagation = stopPropagation.bind(event); |
| 71 event.preventDefault = preventDefault.bind(event); |
| 72 |
| 73 var listeners = this._listeners[eventType]; |
| 74 for (var i = 0; i < listeners.length; ++i) { |
| 75 listeners[i].listener.call(listeners[i].thisObject, event); |
| 76 if (stoppedPropagation) |
| 77 break; |
| 78 } |
| 79 |
| 80 return event.defaultPrevented; |
| 81 } |
| 82 } |
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