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jQuery.fn.elfinderoverlay = function(opts) {

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"use strict";

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var fm = this.parent().elfinder('instance'),

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o, cnt, show, hide;

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this.filter(':not(.elfinder-overlay)').each(function() {

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opts = Object.assign({}, opts);

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jQuery(this).addClass('ui-front ui-widget-overlay elfinder-overlay')

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.hide()

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.on('mousedown', function(e) {

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e.preventDefault();

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e.stopPropagation();

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})

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.data({

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cnt : 0,

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show : typeof(opts.show) == 'function' ? opts.show : function() { },

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hide : typeof(opts.hide) == 'function' ? opts.hide : function() { }

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});

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});

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if (opts == 'show') {

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o = this.eq(0);

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cnt = o.data('cnt') + 1;

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show = o.data('show');

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fm.toFront(o);

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o.data('cnt', cnt);

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if (o.is(':hidden')) {

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o.show();

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show();

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}

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}

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if (opts == 'hide') {

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o = this.eq(0);

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cnt = o.data('cnt') - 1;

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hide = o.data('hide');

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o.data('cnt', cnt);

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if (cnt <= 0) {

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o.hide();

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hide();

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}

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}

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return this;

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};

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