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/*
* jQuery Progress Bar plugin
* Version 2.0 (06/22/2009)
* @requires jQuery v1.2.1 or later
*
* Copyright (c) 2008 Gary Teo
* http://t.wits.sg
USAGE:
$(".someclass").progressBar();
$("#progressbar").progressBar();
$("#progressbar").progressBar(45); // percentage
$("#progressbar").progressBar({showText: false }); // percentage with config
$("#progressbar").progressBar(45, {showText: false }); // percentage with config
*/
(function($) {
$.extend({
progressBar: new function() {
this.defaults = {
steps : 20, // steps taken to reach target
stepDuration : 20,
max : 100, // Upon 100% i'd assume, but configurable
showText : true, // show text with percentage in next to the progressbar? - default : true
textFormat : 'percentage', // Or otherwise, set to 'fraction'
width : 120, // Width of the progressbar - don't forget to adjust your image too!!! // Image to use in the progressbar. Can be a single image too: 'images/progressbg_green.gif'
height : 12, // Height of the progressbar - don't forget to adjust your image too!!!
callback : null, // Calls back with the config object that has the current percentage, target percentage, current image, etc
boxImage : 'images/progressbar.gif', // boxImage : image around the progress bar
barImage : {
0: 'images/progressbg_red.gif',
30: 'images/progressbg_orange.gif',
70: 'images/progressbg_green.gif'
},
// Internal use
running_value : 0,
value : 0,
image : null
};
/* public methods */
this.construct = function(arg1, arg2) {
var argvalue = null;
var argconfig = null;
if (arg1 != null) {
if (!isNaN(arg1)) {
argvalue = arg1;
if (arg2 != null) {
argconfig = arg2;
}
} else {
argconfig = arg1;
}
}
return this.each(function(child) {
var pb = this;
var config = this.config;
if (argvalue != null && this.bar != null && this.config != null) {
this.config.value = parseInt(argvalue)
if (argconfig != null)
pb.config = $.extend(this.config, argconfig);
config = pb.config;
} else {
var $this = $(this);
var config = $.extend({}, $.progressBar.defaults, argconfig);
config.id = $this.attr('id') ? $this.attr('id') : Math.ceil(Math.random() * 100000); // random id, if none provided
if (argvalue == null)
argvalue = $this.html().replace("%","") // parse percentage
config.value = parseInt(argvalue);
config.running_value = 0;
config.image = getBarImage(config);
var numeric = ['steps', 'stepDuration', 'max', 'width', 'height', 'running_value', 'value'];
for (var i=0; i<numeric.length; i++)
config[numeric[i]] = parseInt(config[numeric[i]]);
$this.html("");
var bar = document.createElement('img');
var text = document.createElement('span');
var $bar = $(bar);
var $text = $(text);
pb.bar = $bar;
$bar.attr('id', config.id + "_pbImage");
$text.attr('id', config.id + "_pbText");
$text.html(getText(config));
$bar.attr('title', getText(config));
$bar.attr('alt', getText(config));
$bar.attr('src', config.boxImage);
$bar.attr('width', config.width);
$bar.css("width", config.width + "px");
$bar.css("height", config.height + "px");
$bar.css("background-image", "url(" + config.image + ")");
$bar.css("background-position", ((config.width * -1)) + 'px 50%');
$bar.css("padding", "0");
$bar.css("margin", "0");
$this.append($bar);
$this.append($text);
}
function getPercentage(config) {
return config.running_value * 100 / config.max;
}
function getBarImage(config) {
var image = config.barImage;
if (typeof(config.barImage) == 'object') {
for (var i in config.barImage) {
if (config.running_value >= parseInt(i)) {
image = config.barImage[i];
} else { break; }
}
}
return image;
}
function getText(config) {
if (config.showText) {
if (config.textFormat == 'percentage') {
return " " + Math.round(config.running_value) + "%";
} else if (config.textFormat == 'fraction') {
return " " + config.running_value + '/' + config.max;
}
}
}
config.increment = Math.round((config.value - config.running_value)/config.steps);
if (config.increment < 0)
config.increment *= -1;
if (config.increment < 1)
config.increment = 1;
var t = setInterval(function() {
var pixels = config.width / 100; // Define how many pixels go into 1%
if (config.running_value > config.value) {
if (config.running_value - config.increment < config.value) {
config.running_value = config.value;
} else {
config.running_value -= config.increment;
}
}
else if (config.running_value < config.value) {
if (config.running_value + config.increment > config.value) {
config.running_value = config.value;
} else {
config.running_value += config.increment;
}
}
if (config.running_value == config.value)
clearInterval(t);
var $bar = $("#" + config.id + "_pbImage");
var $text = $("#" + config.id + "_pbText");
var image = getBarImage(config);
if (image != config.image) {
$bar.css("background-image", "url(" + image + ")");
config.image = image;
}
$bar.css("background-position", (((config.width * -1)) + (getPercentage(config) * pixels)) + 'px 50%');
$bar.attr('title', getText(config));
$text.html(getText(config));
if (config.callback != null && typeof(config.callback) == 'function')
config.callback(config);
pb.config = config;
}, config.stepDuration);
});
};
}
});
$.fn.extend({
progressBar: $.progressBar.construct
});
})(jQuery);
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