https://school.irinamaslova.com/nassets/21b14ffb/file.js?v=1774347238

1jQuery.widget( 'gc.fileField', $.gc.abstractField, {
2
3	build: function() {
4		$input = $('<input type="hidden"/>');
5        if ( this.field.id ) {
6            $input.attr('id', 'field-input-' + this.field.id);
7        }
8		$input.appendTo( this.labelEl );
9
10        $input.fileWidget({showButtonOnStart:true});
11
12
13		this.input = $input;
14	},
15	afterInit: function() {
16	    this.input.fileWidget( 'showUploader' );
17	},
18
19
20	initEditor: function( settingsEl ) {
21		$.gc.abstractField.prototype.initEditor.call(this, settingsEl );
22	},
23
24	getValue: function() {
25		return this.input.val();
26	},
27    valueChanged: function( showFileWidgetIfNull ) {
28        this.input.fileWidget( 'showPreview', showFileWidgetIfNull )
29
30    }
31} );