/**

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* @class elFinder command "restore"

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* Restore items from the trash

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*

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* @author Naoki Sawada

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**/

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(elFinder.prototype.commands.restore = function() {

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"use strict";

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var self = this,

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fm = this.fm,

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fakeCnt = 0,

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getFilesRecursively = function(files) {

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var dfd = $.Deferred(),

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dirs = [],

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results = [],

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reqs = [],

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phashes = [],

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getFile;

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dfd._xhrReject = function() {

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$.each(reqs, function() {

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this && this.reject && this.reject();

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});

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getFile && getFile._xhrReject();

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};

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$.each(files, function(i, f) {

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f.mime === 'directory'? dirs.push(f) : results.push(f);

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});

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if (dirs.length) {

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$.each(dirs, function(i, d) {

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reqs.push(fm.request({

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data : {cmd : 'open', target : d.hash},

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preventDefault : true,

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asNotOpen : true

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}));

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phashes[i] = d.hash;

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});

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$.when.apply($, reqs).fail(function() {

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dfd.reject();

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}).done(function() {

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var items = [];

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$.each(arguments, function(i, r) {

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var files;

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if (r.files) {

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if (r.files.length) {

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items = items.concat(r.files);

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} else {

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items.push({

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hash: 'fakefile_' + (fakeCnt++),

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phash: phashes[i],

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mime: 'fakefile',

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name: 'fakefile',

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ts: 0

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});

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}

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}

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});

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fm.cache(items);

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getFile = getFilesRecursively(items).done(function(res) {

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results = results.concat(res);

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dfd.resolve(results);

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});

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});

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} else {

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dfd.resolve(results);

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}

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return dfd;

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},

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restore = function(dfrd, files, targets, ops) {

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var rHashes = {},

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others = [],

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found = false,

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dirs = [],

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opts = ops || {},

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id = +new Date(),

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tm, getFile;

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fm.lockfiles({files : targets});

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dirs = $.map(files, function(f) {

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return f.mime === 'directory'? f.hash : null;

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});

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dfrd.done(function() {

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dirs && fm.exec('rm', dirs, {forceRm : true, quiet : true});

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}).always(function() {

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fm.unlockfiles({files : targets});

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});

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tm = setTimeout(function() {

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fm.notify({type : 'search', id : id, cnt : 1, hideCnt : true, cancel : function() {

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getFile && getFile._xhrReject();

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dfrd.reject();

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}});

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}, fm.notifyDelay);

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fakeCnt = 0;

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getFile = getFilesRecursively(files).always(function() {

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tm && clearTimeout(tm);

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fm.notify({type : 'search', id: id, cnt : -1, hideCnt : true});

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}).fail(function() {

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dfrd.reject('errRestore', 'errFileNotFound');

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}).done(function(res) {

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var errFolderNotfound = ['errRestore', 'errFolderNotFound'],

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dirTop = '';

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if (res.length) {

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$.each(res, function(i, f) {

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var phash = f.phash,

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pfile,

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srcRoot, tPath;

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while(phash) {

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if (srcRoot = fm.trashes[phash]) {

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if (! rHashes[srcRoot]) {

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if (found) {

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// Keep items of other trash

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others.push(f.hash);

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return null; // continue $.each

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}

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rHashes[srcRoot] = {};

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found = true;

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}

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tPath = fm.path(f.hash).substr(fm.path(phash).length).replace(/\\/g, '/');

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tPath = tPath.replace(/\/[^\/]+?$/, '');

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if (tPath === '') {

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tPath = '/';

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}

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if (!rHashes[srcRoot][tPath]) {

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rHashes[srcRoot][tPath] = [];

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}

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if (f.mime === 'fakefile') {

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fm.updateCache({removed:[f.hash]});

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} else {

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rHashes[srcRoot][tPath].push(f.hash);

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}

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if (!dirTop || dirTop.length > tPath.length) {

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dirTop = tPath;

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}

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break;

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}

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// Go up one level for next check

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pfile = fm.file(phash);

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if (!pfile) {

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phash = false;

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// Detection method for search results

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$.each(fm.trashes, function(ph) {

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var file = fm.file(ph),

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filePath = fm.path(ph);

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if ((!file.volumeid || f.hash.indexOf(file.volumeid) === 0) && fm.path(f.hash).indexOf(filePath) === 0) {

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phash = ph;

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return false;

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}

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});

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} else {

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phash = pfile.phash;

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}

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}

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});

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if (found) {

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$.each(rHashes, function(src, dsts) {

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var dirs = Object.keys(dsts),

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cnt = dirs.length;

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fm.request({

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data : {cmd : 'mkdir', target : src, dirs : dirs},

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notify : {type : 'chkdir', cnt : cnt},

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preventFail : true

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}).fail(function(error) {

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dfrd.reject(error);

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fm.unlockfiles({files : targets});

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}).done(function(data) {

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var cmdPaste, hashes;

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if (hashes = data.hashes) {

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cmdPaste = fm.getCommand('paste');

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if (cmdPaste) {

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// wait until file cache made

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fm.one('mkdirdone', function() {

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var hasErr = false;

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$.each(dsts, function(dir, files) {

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if (hashes[dir]) {

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if (files.length) {

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if (fm.file(hashes[dir])) {

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fm.clipboard(files, true);

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fm.exec('paste', [ hashes[dir] ], {_cmd : 'restore', noToast : (opts.noToast || dir !== dirTop)})

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.done(function(data) {

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if (data && (data.error || data.warning)) {

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hasErr = true;

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}

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})

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.fail(function() {

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hasErr = true;

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})

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.always(function() {

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if (--cnt < 1) {

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dfrd[hasErr? 'reject' : 'resolve']();

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if (others.length) {

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// Restore items of other trash

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fm.exec('restore', others);

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}

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}

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});

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} else {

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dfrd.reject(errFolderNotfound);

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}

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} else {

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if (--cnt < 1) {

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dfrd.resolve();

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if (others.length) {

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// Restore items of other trash

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fm.exec('restore', others);

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}

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}

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}

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}

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});

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});

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} else {

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dfrd.reject(['errRestore', 'errCmdNoSupport', '(paste)']);

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}

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} else {

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dfrd.reject(errFolderNotfound);

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}

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});

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});

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} else {

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dfrd.reject(errFolderNotfound);

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}

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} else {

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dfrd.reject('errFileNotFound');

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dirs && fm.exec('rm', dirs, {forceRm : true, quiet : true});

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}

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});

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};

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// for to be able to overwrite

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this.restore = restore;

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this.linkedCmds = ['copy', 'paste', 'mkdir', 'rm'];

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this.updateOnSelect = false;

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this.init = function() {

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// re-assign for extended command

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self = this;

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fm = this.fm;

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};

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this.getstate = function(sel, e) {

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sel = sel || fm.selected();

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return sel.length && $.grep(sel, function(h) {var f = fm.file(h); return f && ! f.locked && ! fm.isRoot(f)? true : false; }).length == sel.length

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? 0 : -1;

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};

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this.exec = function(hashes, opts) {

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var dfrd = $.Deferred()

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.fail(function(error) {

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error && fm.error(error);

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}),

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files = self.files(hashes);

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if (! files.length) {

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return dfrd.reject();

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}

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$.each(files, function(i, file) {

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if (fm.isRoot(file)) {

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return !dfrd.reject(['errRestore', file.name]);

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}

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if (file.locked) {

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return !dfrd.reject(['errLocked', file.name]);

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}

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});

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if (dfrd.state() === 'pending') {

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this.restore(dfrd, files, hashes, opts);

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}

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return dfrd;

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};

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}).prototype = { forceLoad : true }; // this is required command

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