91 lines
3.3 KiB
JavaScript
91 lines
3.3 KiB
JavaScript
/*
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* Copyright (C) 2008 Apple Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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WebInspector.Object = function() {
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}
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WebInspector.Object.prototype = {
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addEventListener: function(eventType, listener, thisObject)
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{
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if (!("_listeners" in this))
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this._listeners = {};
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if (!(eventType in this._listeners))
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this._listeners[eventType] = [];
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this._listeners[eventType].push({ thisObject: thisObject, listener: listener });
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},
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removeEventListener: function(eventType, listener, thisObject)
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{
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if (!("_listeners" in this) || !(eventType in this._listeners))
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return;
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var listeners = this._listeners[eventType];
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for (var i = 0; i < listeners.length; ++i) {
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if (listener && listeners[i].listener === listener && listeners[i].thisObject === thisObject)
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listeners.splice(i, 1);
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else if (!listener && thisObject && listeners[i].thisObject === thisObject)
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listeners.splice(i, 1);
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}
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if (!listeners.length)
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delete this._listeners[eventType];
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},
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removeAllListeners: function()
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{
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delete this._listeners;
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},
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dispatchEventToListeners: function(eventType, eventData)
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{
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if (!("_listeners" in this) || !(eventType in this._listeners))
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return;
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var stoppedPropagation = false;
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function stopPropagation()
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{
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stoppedPropagation = true;
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}
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function preventDefault()
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{
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this.defaultPrevented = true;
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}
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var event = {target: this, type: eventType, data: eventData, defaultPrevented: false};
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event.stopPropagation = stopPropagation;
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event.preventDefault = preventDefault;
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var listeners = this._listeners[eventType].slice(0);
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for (var i = 0; i < listeners.length; ++i) {
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listeners[i].listener.call(listeners[i].thisObject, event);
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if (stoppedPropagation)
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break;
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}
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return event.defaultPrevented;
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}
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}
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