jquery-ui/ui/jquery.ui.progressbar.js

/*
 * jQuery UI Progressbar @VERSION
 *
 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Progressbar
 *
 * Depends:
 *   jquery.ui.core.js
 *   jquery.ui.widget.js
 */
(function($) {

$.widget("ui.progressbar", {
	options: {
		value: 0
	},
	_init: function() {

		this.element
			.addClass("ui-progressbar"
				+ " ui-widget"
				+ " ui-widget-content"
				+ " ui-corner-all")
			.attr({
				role: "progressbar",
				"aria-valuemin": this._valueMin(),
				"aria-valuemax": this._valueMax(),
				"aria-valuenow": this._value()
			});

		this.valueDiv = $('<div class="ui-progressbar-value ui-widget-header ui-corner-left"></div>').appendTo(this.element);

		this._refreshValue();

	},

	destroy: function() {

		this.element
			.removeClass("ui-progressbar"
				+ " ui-widget"
				+ " ui-widget-content"
				+ " ui-corner-all")
			.removeAttr("role")
			.removeAttr("aria-valuemin")
			.removeAttr("aria-valuemax")
			.removeAttr("aria-valuenow")
			.removeData("progressbar")
			.unbind(".progressbar");

		this.valueDiv.remove();

		$.Widget.prototype.destroy.apply(this, arguments);

		return this;
	},

	value: function(newValue) {
		if (newValue === undefined) {
			return this._value();
		}
		
		this._setOption('value', newValue);
		return this;
	},

	_setOption: function(key, value) {

		switch (key) {
			case 'value':
				this.options.value = value;
				this._refreshValue();
				this._trigger('change', null, {});
				break;
		}

		$.Widget.prototype._setOption.apply(this, arguments);

	},

	_value: function() {
		var val = this.options.value;
		// normalize invalid value
		if (typeof val != "number")
			val = 0;
		if (val < this._valueMin()) val = this._valueMin();
		if (val > this._valueMax()) val = this._valueMax();

		return val;

	},

	_valueMin: function() {
		var valueMin = 0;
		return valueMin;
	},

	_valueMax: function() {
		var valueMax = 100;
		return valueMax;
	},

	_refreshValue: function() {
		var value = this.value();
		this.valueDiv[value == this._valueMax() ? 'addClass' : 'removeClass']("ui-corner-right");
		this.valueDiv.width(value + '%');
		this.element.attr("aria-valuenow", value);
	}

});

$.extend($.ui.progressbar, {
	version: "@VERSION"
});

})(jQuery);