class.ilDragDropFileInputGUI.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once("./Services/Form/classes/class.ilFileInputGUI.php");

class ilDragDropFileInputGUI extends ilFileInputGUI
{
        private $uniqueId = 0;
        private $archive_suffixes = array();
        private $submit_button_name = null;
        private $cancel_button_name = null;
        
        private static $uniqueInc = 1;
        
        static private function getNextUniqueId()
        {
                return self::$uniqueInc++;
        }
        
        function __construct($a_title = "", $a_postvar = "")
        {
                parent::__construct($a_title, $a_postvar);
                $this->uniqueId = self::getNextUniqueId();
        }
        
        function setArchiveSuffixes($a_suffixes)
        {
                $this->archive_suffixes = $a_suffixes;
        }

        function getArchiveSuffixes()
        {
                return $this->archive_suffixes;
        }
        
        function setCommandButtonNames($a_submit_name, $a_cancel_name)
        {
                $this->submit_button_name = $a_submit_name;
                $this->cancel_button_name = $a_cancel_name;
        }
        
        function render($a_mode = "")
        {
                global $lng, $tpl, $ilUser;
                                        
                $quota_exceeded = $quota_legend = false;
                if(self::$check_wsp_quota)
                {
                        include_once "Services/DiskQuota/classes/class.ilDiskQuotaHandler.php";
                        if(!ilDiskQuotaHandler::isUploadPossible())
                        {
                                $lng->loadLanguageModule("file");
                                return $lng->txt("personal_workspace_quota_exceeded_warning");                  
                        }
                        else
                        {                                                       
                                $quota_legend = ilDiskQuotaHandler::getStatusLegend();
                        }
                }

                // make sure jQuery is loaded
                iljQueryUtil::initjQuery();
                
                // add file upload scripts
                include_once("./Services/FileUpload/classes/class.ilFileUploadGUI.php");
                ilFileUploadGUI::initFileUpload();
                
                // load template
                $this->tpl = new ilTemplate("tpl.prop_dndfiles.html", true, true, "Services/Form");
                
                // general variables
                $this->tpl->setVariable("UPLOAD_ID", $this->uniqueId);
                
                // input
                $this->tpl->setVariable("FILE_SELECT_ICON", ilObject::_getIcon("", "", "fold"));
                $this->tpl->setVariable("TXT_SHOW_ALL_DETAILS", $lng->txt('show_all_details')); 
                $this->tpl->setVariable("TXT_HIDE_ALL_DETAILS", $lng->txt('hide_all_details'));
                $this->tpl->setVariable("TXT_SELECTED_FILES", $lng->txt('selected_files'));
                $this->tpl->setVariable("TXT_DRAG_FILES_HERE", $lng->txt('drag_files_here'));
                $this->tpl->setVariable("TXT_NUM_OF_SELECTED_FILES", $lng->txt('num_of_selected_files'));
                $this->tpl->setVariable("TXT_SELECT_FILES_FROM_COMPUTER", $lng->txt('select_files_from_computer'));
                $this->tpl->setVariable("TXT_OR", $lng->txt('logic_or'));
                $this->tpl->setVariable("INPUT_ACCEPT_SUFFIXES", $this->getInputAcceptSuffixes($this->getSuffixes()));

                // info
                $this->tpl->setCurrentBlock("max_size");
                $this->tpl->setVariable("TXT_MAX_SIZE", $lng->txt("file_notice")." ".$this->getMaxFileSizeString());
                $this->tpl->parseCurrentBlock();
                
                if($quota_legend)
                {
                        $this->tpl->setVariable("TXT_MAX_SIZE", $quota_legend);                                                                         
                        $this->tpl->parseCurrentBlock();
                }
                
                $this->outputSuffixes($this->tpl);
                
                // create file upload object
                $upload = new ilFileUploadGUI("ilFileUploadDropZone_" . $this->uniqueId, $this->uniqueId, false);
                $upload->enableFormSubmit("ilFileUploadInput_" . $this->uniqueId, $this->submit_button_name, $this->cancel_button_name);
                $upload->setDropAreaId("ilFileUploadDropArea_" . $this->uniqueId);
                $upload->setFileListId("ilFileUploadList_" . $this->uniqueId);
                $upload->setFileSelectButtonId("ilFileUploadFileSelect_" . $this->uniqueId);
                
                $this->tpl->setVariable("FILE_UPLOAD", $upload->getHTML());
                
                return $this->tpl->get();
        }
        
        function checkInput()
        {
                global $lng;
                
                // if no information is received, something went wrong
                // this is e.g. the case, if the post_max_size has been exceeded
                if (!is_array($_FILES[$this->getPostVar()]))
                {
                        $this->setAlert($lng->txt("form_msg_file_size_exceeds"));
                        return false;
                }
                
                // empty file, could be a folder
                if ($_FILES[$this->getPostVar()]["size"] < 1)
                {
                        $this->setAlert($lng->txt("error_upload_was_zero_bytes"));
                        return false;
                }       

                // call base
                $inputValid = parent::checkInput();
                
                // set additionally sent input on post array
                if ($inputValid)
                {
                        $_POST[$this->getPostVar()]["extract"] = isset($_POST["extract"]) ? (bool)$_POST["extract"] : false;
                        $_POST[$this->getPostVar()]["title"] = isset($_POST["title"]) ? $_POST["title"] : "";
                        $_POST[$this->getPostVar()]["description"] = isset($_POST["description"]) ? $_POST["description"] : "";
                        $_POST[$this->getPostVar()]["keep_structure"] = isset($_POST["keep_structure"]) ? (bool)$_POST["keep_structure"] : true;
                }
                
                return $inputValid;
        }
        
        protected function getInputAcceptSuffixes($suffixes)
        {
                $list = $delim = "";
                
                if (is_array($suffixes) && count($suffixes) > 0)
                {
                        foreach($suffixes as $suffix)
                        {
                                $list .= $delim . "." . $suffix;
                                $delim = ",";
                        }
                }
                
                return $list;           
        }
        
        protected function buildSuffixList($suffixes)
        {
                $list = $delim = "";
                
                if (is_array($suffixes) && count($suffixes) > 0)
                {
                        foreach($suffixes as $suffix)
                        {
                                $list .= $delim . "\"" . $suffix . "\"";
                                $delim = ", ";
                        }
                }
                
                return $list;
        }
        
        protected function getMaxFileSize()
        {
                // get the value for the maximal uploadable filesize from the php.ini (if available)
                $umf = ini_get("upload_max_filesize");
                // get the value for the maximal post data from the php.ini (if available)
                $pms = ini_get("post_max_size");
        
                //convert from short-string representation to "real" bytes
                $multiplier_a=array("K"=>1024, "M"=>1024*1024, "G"=>1024*1024*1024);
        
                $umf_parts=preg_split("/(\d+)([K|G|M])/", $umf, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
                $pms_parts=preg_split("/(\d+)([K|G|M])/", $pms, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
        
                if (count($umf_parts) == 2) {
                        $umf = $umf_parts[0]*$multiplier_a[$umf_parts[1]];
                }
                if (count($pms_parts) == 2) {
                        $pms = $pms_parts[0]*$multiplier_a[$pms_parts[1]];
                }
        
                // use the smaller one as limit
                $max_filesize = min($umf, $pms);
        
                if (!$max_filesize) 
                        $max_filesize=max($umf, $pms);
                
                return $max_filesize;
        }
}
?>