initial

wp-content/plugins/file-manager-advanced/application/library/js/ui/overlay.js

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+
+$.fn.elfinderoverlay = function(opts) {
+	"use strict";
+	var fm = this.parent().elfinder('instance'),
+		o, cnt, show, hide;
+	
+	this.filter(':not(.elfinder-overlay)').each(function() {
+		opts = Object.assign({}, opts);
+		$(this).addClass('ui-front ui-widget-overlay elfinder-overlay')
+			.hide()
+			.on('mousedown', function(e) {
+				e.preventDefault();
+				e.stopPropagation();
+			})
+			.data({
+				cnt  : 0,
+				show : typeof(opts.show) == 'function' ? opts.show : function() { },
+				hide : typeof(opts.hide) == 'function' ? opts.hide : function() { }
+			});
+	});
+	
+	if (opts == 'show') {
+		o    = this.eq(0);
+		cnt  = o.data('cnt') + 1;
+		show = o.data('show');
+
+		fm.toFront(o);
+		o.data('cnt', cnt);
+
+		if (o.is(':hidden')) {
+			o.show();
+			show();
+		}
+	} 
+	
+	if (opts == 'hide') {
+		o    = this.eq(0);
+		cnt  = o.data('cnt') - 1;
+		hide = o.data('hide');
+		
+		o.data('cnt', cnt);
+			
+		if (cnt <= 0) {
+			o.hide();
+			hide();
+		}
+	}
+	
+	return this;
+};