controllers/C_Document.class.php

   1 <?php
   2
   3 require_once(dirname(__FILE__) . "/../library/classes/Controller.class.php");
   4 require_once(dirname(__FILE__) . "/../library/classes/Document.class.php");
   5 require_once(dirname(__FILE__) . "/../library/classes/CategoryTree.class.php");
   6 require_once(dirname(__FILE__) . "/../library/classes/TreeMenu.php");
   7 require_once(dirname(__FILE__) . "/../library/classes/Note.class.php");
   8
   9 class C_Document extends Controller {
  10
  11         var $template_mod;
  12         var $documents;
  13         var $document_categories;
  14         var $tree;
  15         var $_config;
  16         var $file_path;
  17
  18
  19         function C_Document($template_mod = "general") {
  20                 parent::Controller();
  21                 $this->documents = array();
  22                 $this->template_mod = $template_mod;
  23                 $this->assign("FORM_ACTION", $GLOBALS['webroot']."/controller.php?" . $_SERVER['QUERY_STRING']);
  24                 $this->assign("CURRENT_ACTION", $GLOBALS['webroot']."/controller.php?" . "document&");
  25
  26                 //get global config options for this namespace
  27                 $this->_config = $GLOBALS['oer_config']['documents'];
  28
  29                 $this->file_path = $this->_config['repository'] . preg_replace("/[^A-Za-z0-9]/","_",$_GET['patient_id']) . "/";
  30
  31                 $this->_args = array("patient_id" => $_GET['patient_id']);
  32
  33                 $this->assign("STYLE", $GLOBALS['style']);
  34                 $t = new CategoryTree(1);
  35                 //print_r($t->tree);
  36                 $this->tree = $t;
  37         }
  38
  39         function upload_action($patient_id,$category_id) {
  40                 $category_name = $this->tree->get_node_name($category_id);
  41                 $this->assign("category_id", $category_id);
  42                 $this->assign("category_name", $category_name);
  43                 $this->assign("patient_id", $patient_id);
  44                 $activity = $this->fetch($GLOBALS['template_dir'] . "documents/" . $this->template_mod . "_upload.html");
  45                 $this->assign("activity", $activity);
  46                 return $this->list_action($patient_id);
  47         }
  48
  49         function upload_action_process() {
  50
  51                 if ($_POST['process'] != "true")
  52                         return;
  53
  54                 if (is_numeric($_POST['category_id'])) {
  55                         $category_id = $_POST['category_id'];
  56                 }
  57                 if (is_numeric($_POST['patient_id'])) {
  58                         $patient_id = $_POST['patient_id'];
  59                 }
  60
  61                 foreach ($_FILES as $file) {
  62                   $fname = $file['name'];
  63                   $err = "";
  64                   if ($file['error'] > 0 || empty($file['name']) || $file['size'] == 0) {
  65                         $fname = $file['name'];
  66                         if (empty($fname)) {
  67                                 $fname = htmlentities("<empty>");
  68                         }
  69                         $error = "Error number: " . $file['error'] . " occured while uploading file named: " . $fname . "\n";
  70                         if ($file['size'] == 0) {
  71                                 $error .= "The system does not permit uploading files of with size 0.\n";
  72                         }
  73
  74                   }
  75                   else {
  76
  77                         if (!file_exists($this->file_path)) {
  78                                 if (!mkdir($this->file_path,0700)) {
  79                                         $error .= "The system was unable to create the directory for this upload, '" . $this->file_path . "'.\n";
  80                                 }
  81                         }
  82
  83                         $fname = preg_replace("/[^a-zA-Z0-9_.]/","_",$fname);
  84                         if (file_exists($this->file_path.$file['name'])) {
  85                                 $error .= "File with same name already exists at location: " . $this->file_path . "\n";
  86                                 $fname = basename($this->_rename_file($this->file_path.$file['name']));
  87                                 $file['name'] = $fname;
  88                                 $error .= "Current file name was changed to " . $fname ."\n";
  89                         }
  90                         if (move_uploaded_file($file['tmp_name'],$this->file_path.$file['name'])) {
  91                                 $error .= "File " . $file['name'] . " successfully stored.\n";
  92                                 $d = new Document();
  93                                 $d->url = "file://" .$this->file_path.$file['name'];
  94                                 $d->mimetype = $file['type'];
  95                                 $d->size = $file['size'];
  96                                 $d->type = $d->type_array['file_url'];
  97                                 $d->set_foreign_id($patient_id);
  98                                 $d->persist();
  99                                 $d->populate();
 100                                 $this->assign("file",$d);
 101
 102                                 if (is_numeric($d->get_id()) && is_numeric($category_id)) {
 103                                   $sql = "REPLACE INTO categories_to_documents set category_id = '" . $category_id . "', document_id = '" . $d->get_id() . "'";
 104                                   $d->_db->Execute($sql);
 105                                 }
 106                         }
 107                         else {
 108                                 $error .= "The file could not be succesfully stored, this error is usually related to permissions problems on the storage system.\n";
 109                         }
 110                   }
 111                 }
 112                 $this->assign("error", nl2br($error));
 113                 //$this->_state = false;
 114                 $_POST['process'] = "";
 115                 //return $this->fetch($GLOBALS['template_dir'] . "documents/" . $this->template_mod . "_upload.html");
 116         }
 117
 118         function note_action_process($patient_id) {
 119
 120                 if ($_POST['process'] != "true")
 121                         return;
 122
 123                 $n = new Note();
 124                 parent::populate_object($n);
 125                 $n->persist();
 126
 127                 $this->_state = false;
 128                 $_POST['process'] = "";
 129                 return $this->view_action($patient_id,$n->get_foreign_id());
 130         }
 131
 132         function default_action() {
 133                 return $this->list_action();
 134         }
 135
 136         function view_action($patient_id="",$doc_id) {
 137                 // Added by Rod to support document delete:
 138                 global $gacl_object, $phpgacl_location;
 139                 global $ISSUE_TYPES;
 140
 141                 require_once(dirname(__FILE__) . "/../library/acl.inc");
 142                 require_once(dirname(__FILE__) . "/../library/lists.inc");
 143
 144                 $d = new Document($doc_id);
 145                 $n = new Note();
 146
 147                 $notes = $n->notes_factory($doc_id);
 148
 149                 $this->assign("file", $d);
 150                 $this->assign("web_path", $this->_link("retrieve") . "document_id=" . $d->get_id() . "&");
 151                 $this->assign("NOTE_ACTION",$this->_link("note"));
 152                 $this->assign("MOVE_ACTION",$this->_link("move") . "document_id=" . $d->get_id() . "&process=true");
 153
 154                 // Added by Rod to support document delete:
 155                 $delete_string = '';
 156                 if (acl_check('admin', 'super')) {
 157                         $delete_string = "<a href='' onclick='return deleteme(" . $d->get_id() .
 158                                 ")'><font color='red'>(Delete this document)</font></a>";
 159                 }
 160                 $this->assign("delete_string", $delete_string);
 161                 $this->assign("REFRESH_ACTION",$this->_link("list"));
 162
 163                 // Added by Rod to support document date update:
 164                 $this->assign("DOCDATE", $d->get_docdate());
 165                 $this->assign("UPDATE_ACTION",$this->_link("update") .
 166                         "document_id=" . $d->get_id() . "&process=true");
 167
 168                 // Added by Rod to support document issue update:
 169                 $issues_options = "<option value='0'>-- Select Issue --</option>";
 170                 $ires = sqlStatement("SELECT id, type, title, begdate FROM lists WHERE " .
 171                         "pid = $patient_id " . // AND enddate IS NULL " .
 172                         "ORDER BY type, begdate");
 173                 while ($irow = sqlFetchArray($ires)) {
 174                         $desc = $irow['type'];
 175                         if ($ISSUE_TYPES[$desc]) $desc = $ISSUE_TYPES[$desc][2];
 176                         $desc .= ": " . $irow['begdate'] . " " . htmlspecialchars(substr($irow['title'], 0, 40));
 177                         $sel = ($irow['id'] == $d->get_list_id()) ? ' selected' : '';
 178                         $issues_options .= "<option value='" . $irow['id'] . "'$sel>$desc</option>";
 179                 }
 180                 $this->assign("ISSUES_LIST", $issues_options);
 181
 182                 $this->assign("notes",$notes);
 183
 184                 $this->_last_node = null;
 185
 186                 $menu  = new HTML_TreeMenu();
 187
 188                 //pass an empty array because we don't want the documents for each category showing up in this list box
 189                 $rnode = $this->_array_recurse($this->tree->tree,array());
 190                 $menu->addItem($rnode);
 191                 $treeMenu_listbox  = &new HTML_TreeMenu_Listbox($menu, array("promoText" => "Move Document to Category:"));
 192
 193                 $this->assign("tree_html_listbox",$treeMenu_listbox->toHTML());
 194
 195                 $activity = $this->fetch($GLOBALS['template_dir'] . "documents/" . $this->template_mod . "_view.html");
 196                 $this->assign("activity", $activity);
 197
 198                 return $this->list_action($patient_id);
 199         }
 200
 201         function retrieve_action($patient_id="",$document_id,$as_file=true) {
 202                 $d = new Document($document_id);
 203                 $url =  $d->get_url();
 204
 205                 //strip url of protocol handler
 206                 $url = preg_replace("|^(.*)://|","",$url);
 207
 208                 //change full path to current webroot.  this is for documents that may have
 209                 //been moved from a different filesystem and the full path in the database
 210                 //is not current.
 211                 $temp_url = $GLOBALS["fileroot"].'/documents/'.$_SESSION["pid"].'/'.basename($url);
 212                 if (file_exists($temp_url)) {
 213                         $url = $temp_url;
 214                 }
 215                 if (!file_exists($url)) {
 216                         echo "The requested document is not present at the expected location on the filesystem or there are not sufficient permissions to access it. $url";
 217                 }
 218                 else {
 219                         header("Pragma: public");
 220                 header("Expires: 0");
 221                 header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
 222                 header("Content-Disposition: " . ($as_file ? "attachment" : "inline") . "; filename=\"" . basename($d->get_url()) . "\"");
 223                         header("Content-Type: " . $d->get_mimetype());
 224                         header("Content-Length: " . $d->get_size());
 225                         $f = fopen($url,"r");
 226                         fpassthru($f);
 227                         exit;
 228                 }
 229         }
 230
 231         function queue_action($patient_id="") {
 232                 $messages = $this->_tpl_vars['messages'];
 233                 $queue_files = array();
 234
 235                 //see if the repository exists and it is a directory else error
 236                 if (file_exists($this->_config['repository']) && is_dir($this->_config['repository'])) {
 237                         $dir = opendir($this->_config['repository']);
 238                         //read each entry in the directory
 239                         while (($file = readdir($dir)) !== false) {
 240                                 //concat the filename and path
 241                                 $file = $this->_config['repository'] .$file;
 242                                 $file_info = array();
 243                                 //if the filename is a file get its info and put into a tmp array
 244                                 if (is_file($file) && strpos(basename($file),".") !== 0) {
 245                                         $file_info['filename'] = basename($file);
 246                                         $file_info['mtime'] = date("m/d/Y H:i:s",filemtime($file));
 247                                         $d = Document::document_factory_url("file://" . $file);
 248                                         preg_match("/^([0-9]+)_/",basename($file),$patient_match);
 249                                         $file_info['patient_id'] = $patient_match[1];
 250                                         $file_info['document_id'] = $d->get_id();
 251                                         $file_info['web_path'] = $this->_link("retrieve",true) . "document_id=" . $d->get_id() . "&";
 252
 253                                         //merge the tmp array into the larger array
 254                                         $queue_files[] = $file_info;
 255                                 }
 256                 }
 257                 closedir($dir);
 258                 }
 259                 else {
 260                         $messages .= "The repository directory does not exist, it is not a directory or there are not sufficient permissions to access it. '" . $this->config['repository'] . "'\n";
 261                 }
 262
 263
 264                 $this->assign("queue_files",$queue_files);
 265                 $this->_last_node = null;
 266
 267                 $menu  = new HTML_TreeMenu();
 268
 269                 //pass an empty array because we don't want the documents for each category showing up in this list box
 270                 $rnode = $this->_array_recurse($this->tree->tree,array());
 271                 $menu->addItem($rnode);
 272                 $treeMenu_listbox  = &new HTML_TreeMenu_Listbox($menu, array());
 273
 274                 $this->assign("tree_html_listbox",$treeMenu_listbox->toHTML());
 275
 276                 $this->assign("messages",nl2br($messages));
 277                 return $this->fetch($GLOBALS['template_dir'] . "documents/" . $this->template_mod . "_queue.html");
 278         }
 279
 280         function queue_action_process() {
 281                 if ($_POST['process'] != "true")
 282                         return;
 283
 284                 $messages = $this->_tpl_vars['messages'];
 285
 286                 //build a category tree so we can have a list of category ids that are valid
 287                 $ct = new CategoryTree(1);
 288                 $categories = $ct->_id_name;
 289
 290                 //see if there were and posted files and assign them
 291                 $files = null;
 292                 is_array($_POST['files']) ? $files = $_POST['files']: $files = array();
 293
 294                 //loop through posted files
 295                 foreach($files as $doc_id=> $file) {
 296                         //only operate on files checked as active
 297                         if (!$file['active']) continue;
 298
 299                         //run basic validation checks
 300                         if (!is_numeric($file['patient_id']) || !is_numeric($file['category_id']) || !is_numeric($doc_id)) {
 301                                 $messages .= "Error processing file '" . $file['name'] ."' the patient id must be a number and the category must exist.\n";
 302                                 continue;
 303                         }
 304
 305                         //validate that the pod exists
 306                         $d = new Document($doc_id);
 307                         $sql = "SELECT pid from patient_data where pubpid = '" . $file['patient_id'] . "'";
 308                         $result = $d->_db->Execute($sql);
 309
 310                         if (!$result || $result->EOF) {
 311                                 //patient id does not exist
 312                                 $messages .= "Error processing file '" . $file['name'] ." the specified patient id '" . $file['patient_id'] . "' could not be found.\n";
 313                                 continue;
 314                         }
 315
 316                         //validate that the category id exists
 317                         if (!isset($categories[$file['category_id']])) {
 318                                 $messages .= "Error processing file '" . $file['name'] . " the specified category with id '" . $file['category_id'] . "' could not be found.\n";
 319                                 continue;
 320                         }
 321
 322                         //now do the work of moving the file
 323                         $new_path = $this->_config['repository'] . $file['patient_id'] ."/";
 324
 325                         //see if the patient dir exists in the repository and create if not
 326                         if (!file_exists($new_path)) {
 327                                 if (!mkdir($new_path,0700)) {
 328                                         $messages .= "The system was unable to create the directory for this upload, '" . $this->file_path . "'.\n";
 329                                         continue;
 330                                 }
 331                         }
 332
 333                         //fname is the name of the file after it is moved
 334                         $fname = $file['name'];
 335
 336                         //see if patient autonumbering is used in this filename, if so strip out the autonumber part
 337                         preg_match("/^([0-9]+)_/",basename($fname),$patient_match);
 338                         if ($patient_match[1] == $file['patient_id']) {
 339                                 $fname = preg_replace("/^([0-9]+)_/","",$fname);
 340                         }
 341
 342                         //filenames should not have funny chars
 343                         $fname = preg_replace("/[^a-zA-Z0-9_.]/","_",$fname);
 344
 345                         //see if there is an existing file with the same name and rename as necessary
 346                         if (file_exists($new_path.$file['name'])) {
 347                                 $messages .= "File with same name already exists at location: " . $new_path . "\n";
 348                                 $fname = basename($this->_rename_file($new_path.$file['name']));
 349                                 $messages .= "Current file name was changed to " . $fname ."\n";
 350                         }
 351
 352                         //now move the file
 353                         if (rename($this->_config['repository'].$file['name'],$new_path.$fname)) {
 354                                 $messages .= "File " . $fname . " moved to patient id '" . $file['patient_id'] ."' and category '" . $categories[$file['category_id']]['name'] . "' successfully.\n";
 355                                 $d->url = "file://" .$new_path.$fname;
 356                                 $d->set_foreign_id($file['patient_id']);
 357                                 $d->set_mimetype($mimetype);
 358                                 $d->persist();
 359                                 $d->populate();
 360
 361                                 if (is_numeric($d->get_id()) && is_numeric($file['category_id'])) {
 362                                   $sql = "REPLACE INTO categories_to_documents set category_id = '" . $file['category_id'] . "', document_id = '" . $d->get_id() . "'";
 363                                   $d->_db->Execute($sql);
 364                                 }
 365                         }
 366                         else {
 367                                 $error .= "The file could not be succesfully stored, this error is usually related to permissions problems on the storage system.\n";
 368                         }
 369                 }
 370                         $this->assign("messages",$messages);
 371                         $_POST['process'] = "";
 372         }
 373
 374         function move_action_process($patient_id="",$document_id) {
 375                 if ($_POST['process'] != "true")
 376                         return;
 377
 378                 $new_category_id = $_POST['new_category_id'];
 379                 $new_patient_id = $_POST['new_patient_id'];
 380
 381                 //move to new category
 382                 if (is_numeric($new_category_id) && is_numeric($document_id)) {
 383                         $sql = "UPDATE categories_to_documents set category_id = '" . $new_category_id . "' where document_id = '" . $document_id ."'";
 384                         $messages .= "Document moved to new category '" . $this->tree->_id_name[$new_category_id]['name']  . "' successfully.\n";
 385                         //echo $sql;
 386                         $this->tree->_db->Execute($sql);
 387                 }
 388
 389                 //move to new patient
 390                 if (is_numeric($new_patient_id) && is_numeric($document_id)) {
 391                         $d = new Document($document_id);
 392                         // $sql = "SELECT pid from patient_data where pubpid = '" . $new_patient_id . "'";
 393                         $sql = "SELECT pid from patient_data where pid = '" . $new_patient_id . "'";
 394                         $result = $d->_db->Execute($sql);
 395
 396                         if (!$result || $result->EOF) {
 397                                 //patient id does not exist
 398                                 $messages .= "Document could not be moved to patient id '" . $new_patient_id  . "' because that id does not exist.\n";
 399                         }
 400                         else {
 401                                 //set the new patient
 402                                 $d->set_foreign_id($new_patient_id);
 403                                 $d->persist();
 404                                 $this->_state = false;
 405                                 $messages .= "Document moved to patient id '" . $new_patient_id  . "' successfully.\n";
 406                                 $this->assign("messages",$messages);
 407                                 return $this->list_action($patient_id);
 408                         }
 409                 }
 410                 //in this case return the document to the queue instead of moving it
 411                 elseif (strtolower($new_patient_id) == "q" && is_numeric($document_id)) {
 412                         $d = new Document($document_id);
 413                         $new_path = $this->_config['repository'];
 414                         $fname = $d->get_url_file();
 415
 416                         //see if there is an existing file with the same name and rename as necessary
 417                         if (file_exists($new_path.$d->get_url_file())) {
 418                                 $messages .= "File with same name already exists in the queue.\n";
 419                                 $fname = basename($this->_rename_file($new_path.$d->get_url_file()));
 420                                 $messages .= "Current file name was changed to " . $fname ."\n";
 421                         }
 422
 423                         //now move the file
 424                         if (rename($d->get_url_filepath(),$new_path.$fname)) {
 425                                 $d->url = "file://" .$new_path.$fname;
 426                                 $d->set_foreign_id("");
 427                                 $d->persist();
 428                                 $d->persist();
 429                                 $d->populate();
 430
 431                                 $sql = "DELETE FROM categories_to_documents where document_id =" . $d->_db->qstr($document_id);
 432                                 $d->_db->Execute($sql);
 433                                 $messages .= "Document returned to queue successfully.\n";
 434
 435                         }
 436                         else {
 437                                 $messages .= "The file could not be succesfully stored, this error is usually related to permissions problems on the storage system.\n";
 438                         }
 439
 440                         $this->_state = false;
 441                         $this->assign("messages",$messages);
 442                         return $this->list_action($patient_id);
 443                 }
 444
 445                 $this->_state = false;
 446                 $this->assign("messages",$messages);
 447                 return $this->view_action($patient_id,$document_id);
 448         }
 449
 450         // Added by Rod for metadata update.
 451         //
 452         function update_action_process($patient_id="", $document_id) {
 453                 if ($_POST['process'] != "true") {
 454                         die("process is '" . $_POST['process'] . "', expected 'true'");
 455                         return;
 456                 }
 457
 458                 $docdate = $_POST['docdate'];
 459                 $issue_id = $_POST['issue_id'];
 460
 461                 if (is_numeric($document_id)) {
 462                         if (preg_match('/^\d\d\d\d-\d+-\d+$/', $docdate)) {
 463                                 $docdate = "'$docdate'";
 464                         } else {
 465                                 $docdate = "NULL";
 466                         }
 467                         if (!is_numeric($issue_id)) {
 468                                 $issue_id = 0;
 469                         }
 470                         $sql = "UPDATE documents SET docdate = $docdate, " .
 471                                 "list_id = '$issue_id' " .
 472                                 "WHERE id = '$document_id'";
 473                         $this->tree->_db->Execute($sql);
 474                         $messages .= "Document date and issue updated successfully\n";
 475                 }
 476
 477                 $this->_state = false;
 478                 $this->assign("messages", $messages);
 479                 return $this->view_action($patient_id, $document_id);
 480         }
 481
 482         function list_action($patient_id = "") {
 483                 $this->_last_node = null;
 484                 $categories_list = $this->tree->_get_categories_array($patient_id);
 485                 //print_r($categories_list);
 486
 487                 $menu  = new HTML_TreeMenu();
 488                 $rnode = $this->_array_recurse($this->tree->tree,$categories_list);
 489                 $menu->addItem($rnode);
 490                 $treeMenu = &new HTML_TreeMenu_DHTML($menu, array('images' => 'images', 'defaultClass' => 'treeMenuDefault'));
 491                 $treeMenu_listbox  = &new HTML_TreeMenu_Listbox($menu, array('linkTarget' => '_self'));
 492
 493                 $this->assign("tree_html",$treeMenu->toHTML());
 494
 495                 return $this->fetch($GLOBALS['template_dir'] . "documents/" . $this->template_mod . "_list.html");
 496         }
 497
 498         /*
 499         *       This is a recursive function to rename a file to something that doesn't already exist. It appends a numeric to the end of the file, if
 500         *       the file already has a numeric it increments that.
 501         *       It supports numeric endings upto 1000, after which it uses an md5sum on now() instead. This is because some files end in
 502         *       dates and we don't want to increment those.
 503         */
 504         function _rename_file($fname) {
 505                 $file = basename($fname);
 506                 $fparts = split("\.",$fname);
 507                 $path = dirname($fname);
 508                 if (is_numeric($fparts[count($fparts) -1]) && $fparts[count($fparts) -1] < 1000) {
 509                         $new_name = "";
 510                         for($i=0;$i<count($fparts);$i++) {
 511                                 if ($i == (count($fparts) -1)) {
 512                                   $new_name .= ($fparts[$i] +1);
 513                                 }
 514                                 else {
 515                                   $new_name .= $fparts[$i] . ".";
 516                                 }
 517                         }
 518                         $fname = $new_name;
 519                 }
 520                 elseif (is_numeric($fparts[count($fparts)])) {
 521                         $fname = $fname . "." . md5sum(now());
 522                 }
 523                 else {
 524                         $fname = $fname . ".1";
 525                 }
 526                 if (file_exists($fname)) {
 527                         return $this->_rename_file($fname);
 528                 }
 529                 else {
 530                         return($fname);
 531                 }
 532         }
 533
 534         function &_array_recurse($array,$categories = array()) {
 535                 if (!is_array($array)) {
 536                         $array = array();
 537                 }
 538                 $node = &$this->_last_node;
 539                 $current_node = &$node;
 540                 $expandedIcon = 'folder-expanded.gif';
 541                 foreach($array as $id => $ar) {
 542                         $icon = 'folder.gif';
 543                         if (is_array($ar)  || !empty($id)) {
 544                           if ($node == null) {
 545                                 //echo "r:" . $this->tree->get_node_name($id) . "<br>";
 546                             $rnode = new HTML_TreeNode(array("id" => $id, 'text' => $this->tree->get_node_name($id), 'link' => $this->_link("upload") . "parent_id=" . $id . "&", 'icon' => $icon, 'expandedIcon' => $expandedIcon, 'expanded' => false));
 547                             $this->_last_node = &$rnode;
 548                                 $node = &$rnode;
 549                                 $current_node =&$rnode;
 550                           }
 551                           else {
 552                                 //echo "p:" . $this->tree->get_node_name($id) . "<br>";
 553                             $this->_last_node = &$node->addItem(new HTML_TreeNode(array("id" => $id, 'text' => $this->tree->get_node_name($id), 'link' => $this->_link("upload") . "parent_id=" . $id . "&", 'icon' => $icon, 'expandedIcon' => $expandedIcon)));
 554                             $current_node =&$this->_last_node;
 555                           }
 556
 557                           $this->_array_recurse($ar,$categories);
 558                         }
 559                         else {
 560                                 if ($id === 0 && !empty($ar)) {
 561                                   $info = $this->tree->get_node_info($id);
 562                                   //echo "b:" . $this->tree->get_node_name($id) . "<br>";
 563                                   $current_node = &$node->addItem(new HTML_TreeNode(array("id" => $id, 'text' => $info['value'], 'link' => $this->_link("upload") . "parent_id=" . $id . "&", 'icon' => $icon, 'expandedIcon' => $expandedIcon)));
 564                                 }
 565                                 else {
 566                                         //there is a third case that is implicit here when title === 0 and $ar is empty, in that case we do not want to do anything
 567                                         //this conditional tree could be more efficient but working with recursive trees makes my head hurt, TODO
 568                                         if ($id !== 0 && is_object($node)) {
 569                                           //echo "n:" . $this->tree->get_node_name($id) . "<br>";
 570                                           $current_node = &$node->addItem(new HTML_TreeNode(array("id" => $id, 'text' => $this->tree->get_node_name($id), 'link' => $this->_link("upload") . "parent_id=" . $id . "&", 'icon' => $icon, 'expandedIcon' => $expandedIcon)));
 571
 572                                         }
 573                                 }
 574                         }
 575
 576                         // If there are documents in this document category, then add their
 577                         // attributes to the current node.
 578                         $icon = "file3.png";
 579                         if (is_array($categories[$id])) {
 580                                 foreach ($categories[$id] as $doc) {
 581                                         $current_node->addItem(new HTML_TreeNode(array(
 582                                                 'text' => $doc['docdate'] . ' ' . basename($doc['url']),
 583                                                 'link' => $this->_link("view") . "doc_id=" . $doc['document_id'] . "&",
 584                                                 'icon' => $icon,
 585                                                 'expandedIcon' => $expandedIcon
 586                                         )));
 587                                 }
 588                         }
 589
 590                 }
 591                 return $node;
 592         }
 593
 594 }
 595 //place to hold optional code
 596 //$first_node = array_keys($t->tree);
 597                 //$first_node = $first_node[0];
 598                 //$node1 = new HTML_TreeNode(array('text' => $t->get_node_name($first_node), 'link' => "test.php", 'icon' => $icon, 'expandedIcon' => $expandedIcon, 'expanded' => true), array('onclick' => "alert('foo'); return false", 'onexpand' => "alert('Expanded')"));
 599
 600                 //$this->_last_node = &$node1;
 601
 602 ?>