class.ilFileUploadGUI.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */
 
require_once("./Services/FileUpload/classes/class.ilFileUploadUtil.php");
require_once("./Services/FileUpload/classes/class.ilFileUploadSettings.php");
 
class ilFileUploadGUI
{
    const FILE_OBJ_GUI_CLASS = "ilObjFileGUI";
    private static $shared_code_loaded = false;
    
    private $drop_zone_id = null;
    private $ref_id = null;
    private $current_obj = false;
    private $max_file_size = null;
    private $suffixes = array();
    private $archive_suffixes = array();
    private $input_field_name = "upload_files";
    private $input_field_id = null;
    private $use_form = false;
    private $drop_area_id = null;
    private $submit_button_name = null;
    private $cancel_button_name = null;
    private $file_list_id = null;
    private $file_select_button_id = null;
    
    public function __construct($a_drop_zone_id, $a_ref_id = null, $current_obj = false)
    {
        global $DIC;
        $ilCtrl = $DIC['ilCtrl'];
        
        $this->drop_zone_id = $a_drop_zone_id;
        $this->ref_id = $a_ref_id;
        $this->current_obj = $current_obj;
    }
 
    public static function initFileUpload()
    {
        global $DIC;
        $tpl = $DIC['tpl'];
        
        // needed scripts
        $tpl->addJavaScript("./Services/FileUpload/js/tmpl.js");
        $tpl->addJavaScript("./Services/FileUpload/js/jquery.ui.widget.js");
        $tpl->addJavaScript("./Services/FileUpload/js/jquery.iframe-transport.js");
        $tpl->addJavaScript("./Services/FileUpload/js/jquery.fileupload.js");
        $tpl->addJavaScript("./Services/FileUpload/js/jquery.ba-dotimeout.min.js");
        $tpl->addJavaScript("./Services/FileUpload/js/ilFileUpload.js", true, 3);
        // needed styles
        $tpl->addCss(ilUtil::getStyleSheetLocation("filesystem", "fileupload.css", "Services/FileUpload"));
    }
    
    public function getHTML()
    {
        global $DIC;
        $lng = $DIC['lng'];
        $ilCtrl = $DIC['ilCtrl'];
        $tpl = $DIC['tpl'];
        
        // get values
        $id = $this->ref_id;
        
        // build options
        $options = new stdClass();
        $options->dropZone = $this->makeJqueryId($this->drop_zone_id);
        
        // set url
        $url = $this->getUploadUrl();
        if ($url === false) {
            return "";
        }
            
        if ($url != null) {
            $options->url = $this->getUploadUrl();
        }
        
        // get title and replace quotes with HTML entities
        if ($this->ref_id != null && !$this->use_form) {
            $title = ilObject::_lookupTitle(ilObject::_lookupObjId($this->ref_id));
            $title = str_replace("\"", "&quot;", $title);
            $title = str_replace("'", "&#039;", $title);
            $options->listTitle = $title;
        }
        
        // input field (use id if specified)
        if ($this->input_field_id != null) {
            $options->fileInput = $this->makeJqueryId($this->input_field_id);
        } elseif ($this->input_field_name != null) {
            $options->fileInput = $this->input_field_name;
        }
        
        // buttons
        if ($this->submit_button_name != null) {
            $options->submitButton = $this->submit_button_name;
        }
        if ($this->cancel_button_name != null) {
            $options->cancelButton = $this->cancel_button_name;
        }
        
        // drop area
        if ($this->drop_area_id != null) {
            $options->dropArea = $this->makeJqueryId($this->drop_area_id);
        }
        
        // file list
        if ($this->file_list_id != null) {
            $options->fileList = $this->makeJqueryId($this->file_list_id);
        }
        
        // file list
        if ($this->file_select_button_id != null) {
            $options->fileSelectButton = $this->makeJqueryId($this->file_select_button_id);
        }
        
        // max size
        $max_size = $this->getMaxFileSize();
        if ($max_size != null) {
            $options->maxFileSize = $max_size;
        }
        
        // allowed extensions
        $allowed_suffixes = $this->buildSuffixList($this->getSuffixes());
        if ($allowed_suffixes != "") {
            $options->allowedExtensions = "[" . $allowed_suffixes . "]";
        }
        
        // supported archive extensions
        $supported_archives = $this->buildSuffixList($this->getArchiveSuffixes());
        if ($supported_archives != "") {
            $options->supportedArchives = "[" . $supported_archives . "]";
        }
        
        // inject load script
        include_once("./Services/JSON/classes/class.ilJsonUtil.php");
        
        $onLoadCode = "";
        if ($this->use_form) {
            $onLoadCode = "var fileUpload$id = new ilFileUpload($id, " . ilJsonUtil::encode($options) . ");";
        } else {
            $onLoadCode = "il.FileUpload.add(\"$id\", " . ilJsonUtil::encode($options) . ", " . ($this->current_obj ? "true" : "false") . ");";
        }
        
        $tpl->addOnLoadCode($onLoadCode);
        
        // return shared code
        return $this->getSharedHtml();
    }
    
    protected function getSharedHtml()
    {
        global $DIC;
        $lng = $DIC['lng'];
        
        // already loaded?
        if (self::$shared_code_loaded) {
            return "";
        }
 
        // make sure required scripts are loaded
        self::initFileUpload();
        
        // load script template
        $tpl_shared = new ilTemplate("tpl.fileupload_shared.html", true, true, "Services/FileUpload");
        
        // initialize localized texts
        $lng->loadLanguageModule("form");
        $tpl_shared->setCurrentBlock("fileupload_texts");
        $tpl_shared->setVariable("ERROR_MSG_FILE_TOO_LARGE", $lng->txt("form_msg_file_size_exceeds"));
        $tpl_shared->setVariable("ERROR_MSG_WRONG_FILE_TYPE", $lng->txt("form_msg_file_wrong_file_type"));
        $tpl_shared->setVariable("ERROR_MSG_EMPTY_FILE_OR_FOLDER", $lng->txt("error_empty_file_or_folder"));
        $tpl_shared->setVariable("ERROR_MSG_UPLOAD_ZERO_BYTES", $lng->txt("error_upload_was_zero_bytes"));
        $tpl_shared->setVariable("QUESTION_CANCEL_ALL", $lng->txt("cancel_file_upload"));
        $tpl_shared->setVariable("ERROR_MSG_EXTRACT_FAILED", $lng->txt("error_extraction_failed"));
        $tpl_shared->setVariable("PROGRESS_UPLOADING", $lng->txt("uploading"));
        $tpl_shared->setVariable("PROGRESS_EXTRACTING", $lng->txt("extracting"));
        $tpl_shared->setVariable("DROP_FILES_HERE", $lng->txt("drop_files_on_repo_obj_info"));
        $tpl_shared->parseCurrentBlock();
            
        // initialize default values
        $tpl_shared->setCurrentBlock("fileupload_defaults");
        $tpl_shared->setVariable("CONCURRENT_UPLOADS", ilFileUploadSettings::getConcurrentUploads());
        $tpl_shared->setVariable("MAX_FILE_SIZE", ilFileUploadUtil::getMaxFileSize());
        $tpl_shared->setVariable("ALLOWED_SUFFIXES", "");
        $tpl_shared->setVariable("SUPPORTED_ARCHIVES", "\"zip\"");
        $tpl_shared->parseCurrentBlock();
            
        // load panel template
        $tpl_panel = new ilTemplate("tpl.fileupload_panel_template.html", true, true, "Services/FileUpload");
        $tpl_panel->setVariable("TXT_HEADER", $lng->txt("upload_files_title"));
        $tpl_panel->setVariable("TXT_SHOW_ALL_DETAILS", $lng->txt('show_all_details'));
        $tpl_panel->setVariable("TXT_HIDE_ALL_DETAILS", $lng->txt('hide_all_details'));
        $tpl_panel->setVariable("TXT_SUBMIT", $lng->txt('upload_files'));
        $tpl_panel->setVariable("TXT_CANCEL", $lng->txt('cancel'));
            
        $tpl_shared->setCurrentBlock("fileupload_panel_tmpl");
        $tpl_shared->setVariable("PANEL_TEMPLATE_HTML", $tpl_panel->get());
        $tpl_shared->parseCurrentBlock();
            
        // load row template
        $tpl_row = new ilTemplate("tpl.fileupload_row_template.html", true, true, "Services/FileUpload");
        $tpl_row->setVariable("IMG_ALERT", ilUtil::getImagePath("icon_alert.svg"));
        $tpl_row->setVariable("ALT_ALERT", $lng->txt("alert"));
        $tpl_row->setVariable("TXT_CANCEL", $lng->txt("cancel"));
        $tpl_row->setVariable("TXT_REMOVE", $lng->txt("remove"));
        $tpl_row->setVariable("TXT_TITLE", $lng->txt("title"));
        $tpl_row->setVariable("TXT_DESCRIPTION", $lng->txt("description"));
        $tpl_row->setVariable("TXT_EXTRACT", $lng->txt("unzip"));
        $tpl_row->setVariable("TXT_KEEP_STRUCTURE", $lng->txt("take_over_structure"));
        $tpl_row->setVariable("TXT_KEEP_STRUCTURE_INFO", $lng->txt("take_over_structure_info"));
        $tpl_row->setVariable("TXT_PENDING", $lng->txt("upload_pending"));
            
        $tpl_shared->setCurrentBlock("fileupload_row_tmpl");
        $tpl_shared->setVariable("ROW_TEMPLATE_HTML", $tpl_row->get());
        $tpl_shared->parseCurrentBlock();
            
        // shared code now loaded
        self::$shared_code_loaded = true;
        
        // create HTML
        return $tpl_shared->get();
    }
    
    protected function buildSuffixList($suffixes)
    {
        $list = $delim = "";
        
        if (is_array($suffixes) && count($suffixes) > 0) {
            foreach ($suffixes as $suffix) {
                $list .= $delim . "\"" . $suffix . "\"";
                $delim = ", ";
            }
        }
        
        return $list;
    }
    
    public function enableFormSubmit($input_field_id, $a_submit_name, $a_cancel_name)
    {
        $this->use_form = true;
        $this->input_field_id = $input_field_id;
        $this->submit_button_name = $a_submit_name;
        $this->cancel_button_name = $a_cancel_name;
    }
    
    public function setMaxFileSize($a_max)
    {
        $this->max_file_size = $a_max;
    }
    
    public function getMaxFileSize()
    {
        return $this->max_file_size;
    }
    
    public function setArchiveSuffixes($a_suffixes)
    {
        $this->archive_suffixes = $a_suffixes;
    }
 
    public function getArchiveSuffixes()
    {
        return $this->archive_suffixes;
    }
    
    public function setSuffixes($a_suffixes)
    {
        $this->suffixes = $a_suffixes;
    }
 
    public function getSuffixes()
    {
        return $this->suffixes;
    }
    
    public function setInputFieldName($a_name)
    {
        $this->input_field_name = $a_name;
    }
 
    public function getInputFieldName()
    {
        return $this->input_field_name;
    }
 
    public function setDropAreaId($a_id)
    {
        $this->drop_area_id = $a_id;
    }
 
    public function getDropAreaId()
    {
        return $this->drop_area_id;
    }
 
    public function setFileListId($a_id)
    {
        $this->file_list_id = $a_id;
    }
 
    public function getFileListId()
    {
        return $this->file_list_id;
    }
    
    public function setFileSelectButtonId($a_id)
    {
        $this->file_select_button_id = $a_id;
    }
 
    public function getFileSelectButtonId()
    {
        return $this->file_select_button_id;
    }
    
    private function getUploadUrl()
    {
        global $DIC;
        $ilCtrl = $DIC['ilCtrl'];
        
        // return null when the form is used
        if ($this->use_form) {
            return null;
        }
        
        // check if supported
        if (!ilFileUploadUtil::isUploadSupported()) {
            return false;
        }
            
        // build upload URL
        include_once("Modules/File/classes/class.ilObjFileGUI.php");
        $ilCtrl->setParameterByClass(self::FILE_OBJ_GUI_CLASS, "ref_id", $this->ref_id);
        $ilCtrl->setParameterByClass(self::FILE_OBJ_GUI_CLASS, "new_type", "file");
    
        return $ilCtrl->getFormActionByClass(self::FILE_OBJ_GUI_CLASS, "uploadFiles", "", true, false);
    }
 
    private function makeJqueryId($a_id)
    {
        if (is_string($a_id) && strlen($a_id) > 0 && $a_id[0] !== '#') {
            return '#' . $a_id;
        }
 
        return $a_id;
    }
}