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/**

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* @class elFinder toolbar's button tor upload file

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* @author Dmitry (dio) Levashov

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**/

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jQuery.fn.elfinderuploadbutton = function(cmd) {

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"use strict";

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return this.each(function() {

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var fm = cmd.fm,

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button = jQuery(this).elfinderbutton(cmd)

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.off('click'),

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form = jQuery('<form></form>').appendTo(button),

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input = jQuery('<input type="file" multiple="true" title="'+cmd.fm.i18n('selectForUpload')+'"/>')

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.on('change', function() {

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var _input = jQuery(this);

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if (_input.val()) {

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fm.exec('upload', {input : _input.remove()[0]}, void(0), fm.cwd().hash);

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input.clone(true).appendTo(form);

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}

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})

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

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e.originalEvent.dataTransfer.dropEffect = 'copy';

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}),

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tm;

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form.append(input.clone(true));

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cmd.change(function() {

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tm && cancelAnimationFrame(tm);

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tm = requestAnimationFrame(function() {

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var toShow = cmd.disabled();

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if (form.is('visible')) {

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!toShow && form.hide();

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} else {

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toShow && form.show();

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}

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});

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})

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.change();

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});

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};

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