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/**
 * @class elFinder command "copy".
 * Put files in filemanager clipboard.
 *
 * @type  elFinder.command
 * @author  Dmitry (dio) Levashov
 */
 elFinder.prototype.commands.copy = function() {
	"use strict";
	this.shortcuts = [{
		pattern     : 'ctrl+c ctrl+insert'
	}];
	
	this.getstate = function(select) {
		var sel = this.files(select),
			cnt = sel.length,
			filter = function(files) {
				var fres = true;
				return jQuery.grep(files, function(f) {
					fres = fres && f.read ? true : false;
					return fres;
				});
			};

		return cnt && filter(sel).length == cnt ? 0 : -1;
	};
	
	this.exec = function(hashes) {
		var fm   = this.fm,
			dfrd = jQuery.Deferred()
				.fail(function(error) {
					fm.error(error);
				});

		jQuery.each(this.files(hashes), function(i, file) {
			if (! file.read) {
				return !dfrd.reject(['errCopy', file.name, 'errPerm']);
			}
		});
		
		return dfrd.state() == 'rejected' ? dfrd : dfrd.resolve(fm.clipboard(this.hashes(hashes)));
	};

};