// SpryNotifier.js - version 0.1 - Spry Pre-Release 1.6
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//
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// Copyright (c) 2007. Adobe Systems Incorporated.
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// 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 are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Adobe Systems Incorporated nor the names of its
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// contributors may be used to endorse or promote products derived from this
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// software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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var Spry; if (!Spry) Spry = {}; if (!Spry.Utils) Spry.Utils = {};
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Spry.Utils.Notifier = function()
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{
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this.observers = [];
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this.suppressNotifications = 0;
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};
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Spry.Utils.Notifier.prototype.addObserver = function(observer)
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{
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if (!observer)
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return;
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// Make sure the observer isn't already on the list.
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var len = this.observers.length;
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for (var i = 0; i < len; i++)
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{
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if (this.observers[i] == observer)
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return;
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}
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this.observers[len] = observer;
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};
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Spry.Utils.Notifier.prototype.removeObserver = function(observer)
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{
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if (!observer)
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return;
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for (var i = 0; i < this.observers.length; i++)
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{
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if (this.observers[i] == observer)
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{
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this.observers.splice(i, 1);
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break;
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}
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}
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};
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Spry.Utils.Notifier.prototype.notifyObservers = function(methodName, data)
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{
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if (!methodName)
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return;
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if (!this.suppressNotifications)
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{
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var len = this.observers.length;
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for (var i = 0; i < len; i++)
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{
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var obs = this.observers[i];
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if (obs)
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{
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if (typeof obs == "function")
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obs(methodName, this, data);
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else if (obs[methodName])
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obs[methodName](this, data);
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}
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}
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}
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};
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Spry.Utils.Notifier.prototype.enableNotifications = function()
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{
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if (--this.suppressNotifications < 0)
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{
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this.suppressNotifications = 0;
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Spry.Debug.reportError("Unbalanced enableNotifications() call!\n");
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}
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};
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Spry.Utils.Notifier.prototype.disableNotifications = function()
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{
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++this.suppressNotifications;
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};
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