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/*!
* LABELAUTY jQuery Plugin
*
* @file: jquery-labelauty.js
* @author: Francisco Neves (@fntneves)
* @site: www.francisconeves.com
* @license: MIT License
*/
(function( $ ){
$.fn.labelauty = function( options )
{
/*
* Our default settings
* Hope you don't need to change anything, with these settings
*/
var settings = $.extend(
{
// Development Mode
// This will activate console debug messages
development: false,
// Trigger Class
// This class will be used to apply styles
class: "labelauty",
// Use text label ?
// If false, then only an icon represents the input
label: true,
// Separator between labels' messages
// If you use this separator for anything, choose a new one
separator: "|",
// Default Checked Message
// This message will be visible when input is checked
checked_label: "Checked",
// Default UnChecked Message
// This message will be visible when input is unchecked
unchecked_label: "Unchecked",
// Force random ID's
// Replace original ID's with random ID's,
force_random_id: false,
// Minimum Label Width
// This value will be used to apply a minimum width to the text labels
minimum_width: false,
// Use the greatest width between two text labels ?
// If this has a true value, then label width will be the greatest between labels
same_width: true
}, options);
/*
* Let's create the core function
* It will try to cover all settings and mistakes of using
*/
return this.each(function()
{
var migrateDeduplicateWarnings = jQuery.migrateDeduplicateWarnings || false;
if (settings.development) jQuery.migrateDeduplicateWarnings = false;
var $object = $( this );
var selected = $object.is(':checked');
var type = $object.attr('type');
var use_labels = true;
var labels;
var labels_object;
var input_id;
//Get the aria label from the input element
var aria_label = $object.attr( "aria-label" );
// Hide the object form screen readers
$object.attr( "aria-hidden", true );
// Test if object is a check input
// Don't mess me up, come on
if( $object.is( ":checkbox" ) === false && $object.is( ":radio" ) === false )
return this;
// Add "labelauty" class to all checkboxes
// So you can apply some custom styles
$object.addClass( settings.class );
// Get the value of "data-labelauty" attribute
// Then, we have the labels for each case (or not, as we will see)
labels = $object.attr( "data-labelauty" );
use_labels = settings.label;
// It's time to check if it's going to the right way
// Null values, more labels than expected or no labels will be handled here
if( use_labels === true )
{
if( labels == null || labels.length === 0 )
{
// If attribute has no label and we want to use, then use the default labels
labels_object = new Array();
labels_object[0] = settings.unchecked_label;
labels_object[1] = settings.checked_label;
}
else
{
// Ok, ok, it's time to split Checked and Unchecked labels
// We split, by the "settings.separator" option
labels_object = labels.split( settings.separator );
// Now, let's check if exist _only_ two labels
// If there's more than two, then we do not use labels :(
// Else, do some additional tests
if( labels_object.length > 2 )
{
use_labels = false;
debug( settings.development, "There's more than two labels. LABELAUTY will not use labels." );
}
else
{
// If there's just one label (no split by "settings.separator"), it will be used for both cases
// Here, we have the possibility of use the same label for both cases
if( labels_object.length === 1 )
debug( settings.development, "There's just one label. LABELAUTY will use this one for both cases." );
}
}
}
/*
* Let's begin the beauty
*/
// Start hiding ugly checkboxes
// Obviously, we don't need native checkboxes :O
$object.css({ display : "none" });
// We don't need more data-labelauty attributes!
// Ok, ok, it's just for beauty improvement
$object.removeAttr( "data-labelauty" );
// Now, grab checkbox ID Attribute for "label" tag use
// If there's no ID Attribute, then generate a new one
input_id = $object.attr( "id" );
if( settings.force_random_id || input_id == null || input_id.trim() === "")
{
var input_id_number = 1 + Math.floor( Math.random() * 1024000 );
input_id = "labelauty-" + input_id_number;
// Is there any element with this random ID ?
// If exists, then increment until get an unused ID
while( $( input_id ).length !== 0 )
{
input_id_number++;
input_id = "labelauty-" + input_id_number;
debug( settings.development, "Holy crap, between 1024 thousand numbers, one raised a conflict. Trying again." );
}
$object.attr( "id", input_id );
}
// Now, add necessary tags to make this work
// Here, we're going to test some control variables and act properly
var element = jQuery(create( input_id, aria_label, selected, type, labels_object, use_labels ))
element.on('click', function(){
if($object.is(':checked')){
$(element).attr('aria-checked', false);
}else{
$(element).attr('aria-checked', true);
}
});
element.on('keypress', function(event){
event.preventDefault();
if(event.keyCode === 32 || event.keyCode === 13){
if($object.is(':checked')){
$object.prop('checked', false);
$(element).attr('aria-checked',false);
}else{
$object.prop('checked', true);
$(element).attr('aria-checked', true);
}
}
})
$object.after(element);
// Now, add "min-width" to label
// Let's say the truth, a fixed width is more beautiful than a variable width
if( settings.minimum_width !== false )
$object.next( "label[for=" + input_id + "]" ).css({ "min-width": settings.minimum_width });
// Now, add "min-width" to label
// Let's say the truth, a fixed width is more beautiful than a variable width
if( settings.same_width != false && settings.label == true )
{
var label_object = $object.next( "label[for=" + input_id + "]" );
var unchecked_width = getRealWidth(label_object.find( "span.labelauty-unchecked" ));
var checked_width = getRealWidth(label_object.find( "span.labelauty-checked" ));
if( unchecked_width > checked_width )
label_object.find( "span.labelauty-checked" ).width( unchecked_width );
else
label_object.find( "span.labelauty-unchecked" ).width( checked_width );
}
if (settings.development) jQuery.migrateDeduplicateWarnings = migrateDeduplicateWarnings;
});
};
/*
* Tricky code to work with hidden elements, like tabs.
* Note: This code is based on jquery.actual plugin.
* https://github.com/dreamerslab/jquery.actual
*/
function getRealWidth( element )
{
var width = 0;
var $target = element;
var style = 'position: absolute !important; top: -1000 !important; ';
$target = $target.clone().attr('style', style).appendTo('body');
width = $target.width(true);
$target.remove();
return width;
}
function debug( debug, message )
{
if( debug && window.console && window.console.log )
window.console.log( "jQuery-LABELAUTY: " + message );
};
function create( input_id, aria_label, selected, type, messages_object, label )
{
var block;
var unchecked_message;
var checked_message;
var aria = "";
if( messages_object == null )
unchecked_message = checked_message = "";
else
{
unchecked_message = messages_object[0];
// If checked message is null, then put the same text of unchecked message
if( messages_object[1] == null )
checked_message = unchecked_message;
else
checked_message = messages_object[1];
}
if(aria_label == null)
aria = "";
else
aria = 'tabindex="0" role="' + type + '" aria-checked="' + selected + '" aria-label="' + aria_label + '"';
if( label == true )
{
block = '<label for="' + input_id + '" ' + aria + '>' +
'<span class="labelauty-unchecked-image"></span>' +
'<span class="labelauty-unchecked">' + unchecked_message + '</span>' +
'<span class="labelauty-checked-image"></span>' +
'<span class="labelauty-checked">' + checked_message + '</span>' +
'</label>';
}
else
{
block = '<label for="' + input_id + '" ' + aria + '>' +
'<span class="labelauty-unchecked-image"></span>' +
'<span class="labelauty-checked-image"></span>' +
'</label>';
}
return block;
};
}( jQuery ));