source: trunk/themes/default/js/ui/jquery.ui.progressbar.js @ 20824

/*!
 * jQuery UI Progressbar 1.10.1
 * http://jqueryui.com
 *
 * Copyright 2013 jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * http://api.jqueryui.com/progressbar/
 *
 * Depends:
 *   jquery.ui.core.js
 *   jquery.ui.widget.js
 */
(function( $, undefined ) {

$.widget( "ui.progressbar", {
        version: "1.10.1",
        options: {
                max: 100,
                value: 0,

                change: null,
                complete: null
        },

        min: 0,

        _create: function() {
                // Constrain initial value
                this.oldValue = this.options.value = this._constrainedValue();

                this.element
                        .addClass( "ui-progressbar ui-widget ui-widget-content ui-corner-all" )
                        .attr({
                                // Only set static values, aria-valuenow and aria-valuemax are
                                // set inside _refreshValue()
                                role: "progressbar",
                                "aria-valuemin": this.min
                        });

                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" );

                this.valueDiv.remove();
        },

        value: function( newValue ) {
                if ( newValue === undefined ) {
                        return this.options.value;
                }

                this.options.value = this._constrainedValue( newValue );
                this._refreshValue();
        },

        _constrainedValue: function( newValue ) {
                if ( newValue === undefined ) {
                        newValue = this.options.value;
                }

                this.indeterminate = newValue === false;

                // sanitize value
                if ( typeof newValue !== "number" ) {
                        newValue = 0;
                }

                return this.indeterminate ? false :
                        Math.min( this.options.max, Math.max( this.min, newValue ) );
        },

        _setOptions: function( options ) {
                // Ensure "value" option is set after other values (like max)
                var value = options.value;
                delete options.value;

                this._super( options );

                this.options.value = this._constrainedValue( value );
                this._refreshValue();
        },

        _setOption: function( key, value ) {
                if ( key === "max" ) {
                        // Don't allow a max less than min
                        value = Math.max( this.min, value );
                }

                this._super( key, value );
        },

        _percentage: function() {
                return this.indeterminate ? 100 : 100 * ( this.options.value - this.min ) / ( this.options.max - this.min );
        },

        _refreshValue: function() {
                var value = this.options.value,
                        percentage = this._percentage();

                this.valueDiv
                        .toggle( this.indeterminate || value > this.min )
                        .toggleClass( "ui-corner-right", value === this.options.max )
                        .width( percentage.toFixed(0) + "%" );

                this.element.toggleClass( "ui-progressbar-indeterminate", this.indeterminate );

                if ( this.indeterminate ) {
                        this.element.removeAttr( "aria-valuenow" );
                        if ( !this.overlayDiv ) {
                                this.overlayDiv = $( "<div class='ui-progressbar-overlay'></div>" ).appendTo( this.valueDiv );
                        }
                } else {
                        this.element.attr({
                                "aria-valuemax": this.options.max,
                                "aria-valuenow": value
                        });
                        if ( this.overlayDiv ) {
                                this.overlayDiv.remove();
                                this.overlayDiv = null;
                        }
                }

                if ( this.oldValue !== value ) {
                        this.oldValue = value;
                        this._trigger( "change" );
                }
                if ( value === this.options.max ) {
                        this._trigger( "complete" );
                }
        }
});

})( jQuery );