File "progressmeter.js"
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(function($){
"use strict";
// Creating a number of jQuery plugins that you can use to
// initialize and control the progress meters.
$.fn.progressInitialize = function(){
// This function creates the necessary markup for the progress meter
// and sets up a few event listeners.
// Loop through all the buttons:
return this.each(function(){
var button = $(this),
progress = 0;
// Extract the data attributes into the options object.
// If they are missing, they will receive default values.
var options = $.extend({
type:'background-horizontal',
loading: 'Loading..',
finished: 'Done!'
}, button.data());
// Add the data attributes if they are missing from the element.
// They are used by our CSS code to show the messages
button.attr({'data-loading': options.loading, 'data-finished': options.finished});
// Add the needed markup for the progress bar to the button
var bar = $('<span class="tz-bar ' + options.type + '">').appendTo(button);
// The progress event tells the button to update the progress bar
button.on('progress', function(e, val, absolute, finish){
if(!button.hasClass('in-progress')){
// This is the first progress event for the button (or the
// first after it has finished in a previous run). Re-initialize
// the progress and remove some classes that may be left.
bar.show();
progress = 0;
button.removeClass('finished').addClass('in-progress')
}
// val, absolute and finish are event data passed by the progressIncrement
// and progressSet methods that you can see near the end of this file.
if(absolute){
progress = val;
}
else{
progress += val;
}
if(progress >= 100){
progress = 100;
}
if(finish){
button.removeClass('in-progress').addClass('finished');
bar.delay(500).fadeOut(function(){
// Trigger the custom progress-finish event
button.trigger('progress-finish');
setProgress(0);
});
}
setProgress(progress);
});
function setProgress(percentage){
bar.filter('.background-horizontal,.background-bar').width(percentage+'%');
bar.filter('.background-vertical').height(percentage+'%');
}
});
};
// progressStart simulates activity on the progress meter. Call it first,
// if the progress is going to take a long time to finish.
$.fn.progressStart = function(){
var button = this.first(),
last_progress = new Date().getTime();
if(button.hasClass('in-progress')){
// Don't start it a second time!
return this;
}
button.on('progress', function(){
last_progress = new Date().getTime();
});
// Every half a second check whether the progress
// has been incremented in the last two seconds
var interval = window.setInterval(function(){
if( new Date().getTime() > 2000+last_progress){
// There has been no activity for two seconds. Increment the progress
// bar a little bit to show that something is happening
button.progressIncrement(5);
}
}, 500);
button.on('progress-finish',function(){
window.clearInterval(interval);
});
return button.progressIncrement(10);
};
$.fn.progressFinish = function(){
return this.first().progressSet(100);
};
$.fn.progressIncrement = function(val){
val = val || 10;
var button = this.first();
button.trigger('progress',[val])
return this;
};
$.fn.progressSet = function(val){
val = val || 10;
var finish = false;
if(val >= 100){
finish = true;
}
return this.first().trigger('progress',[val, true, finish]);
};
// This function creates a progress meter that
// finishes in a specified amount of time.
$.fn.progressTimed = function(seconds, cb){
var button = this.first(),
bar = button.find('.tz-bar');
if(button.is('.in-progress')){
return this;
}
// Set a transition declaration for the duration of the meter.
// CSS will do the job of animating the progress bar for us.
bar.css('transition', seconds+'s linear');
button.progressSet(99);
window.setTimeout(function(){
bar.css('transition','');
button.progressFinish();
if($.isFunction(cb)){
cb();
}
}, seconds*1000);
};
})(jQuery);