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/*!
* @author Santhosh Thottingal
* jQuery autocomplete based multiple selector for input box.
* Autocompleted values will be available in input filed as comma separated values.
* The values for autocompletion is from the language selector in this case.
* The input field is created in PHP code.
* Credits: https://jqueryui.com/autocomplete/#multiple
*/
$( function () {
'use strict';
/* eslint-disable no-underscore-dangle */
$.widget( 'ui.multiselectautocomplete', {
options: {
inputbox: null // a jQuery selector for the input box where selections are written.
// TODO can have more options.
},
_create: function () {
var self, select, options, input;
self = this;
select = this.element.hide();
options = this.options;
function split( val ) {
return val.split( /,\s*/ );
}
input = this.input = $( options.inputbox ).autocomplete( {
delay: 0,
minLength: 0,
source: function ( request, response ) {
var term, matcher;
term = split( request.term ).pop();
matcher = new RegExp( $.ui.autocomplete.escapeRegex( term ), 'i' );
response( select.children( 'option' ).map( function () {
var text = $( this ).html(),
value = $( this ).val(),
term = split( request.term ).pop();
if ( this.value && ( !request.term || matcher.test( text ) ) ) {
if ( term.trim() !== '' ) {
text = text.replace(
new RegExp(
'(?![^&;]+;)(?!<[^<>]*)(' +
$.ui.autocomplete.escapeRegex( term ) +
')(?![^<>]*>)(?![^&;]+;)', 'gi'
), '<strong>$1</strong>' );
}
return {
label: text,
value: value,
option: this
};
}
return undefined;
} ) );
},
select: function ( event, ui ) {
var terms;
ui.item.option.selected = true;
self._trigger( 'selected', event, {
item: ui.item.option
} );
terms = split( $( this ).val() );
// remove the current input
terms.pop();
// add the selected item
terms.push( ui.item.value );
// add placeholder to get the comma-and-space at the end
terms.push( '' );
$( this ).val( terms.join( ', ' ) );
return false;
}
} );
input.data( 'autocomplete' )._renderItem = function ( ul, item ) {
return $( '<li>' )
.data( 'item.autocomplete', item )
.append( '<a>' + item.label + '</a>' )
.appendTo( ul );
};
}, // End of _create
destroy: function () {
this.input.remove();
this.element.show();
$.Widget.prototype.destroy.call( this );
}
} );
} );
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