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Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  
  18  /**
  19   * FileManager form element
  20   *
  21   * Contains HTML class for a filemanager form element
  22   *
  23   * @package   core_form
  24   * @copyright 2009 Dongsheng Cai <dongsheng@moodle.com>
  25   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  26   */
  27  
  28  global $CFG;
  29  
  30  require_once('HTML/QuickForm/element.php');
  31  require_once($CFG->dirroot.'/lib/filelib.php');
  32  require_once($CFG->dirroot.'/repository/lib.php');
  33  require_once ('templatable_form_element.php');
  34  
  35  /**
  36   * Filemanager form element
  37   *
  38   * FilemaneManager lets user to upload/manage multiple files
  39   * @package   core_form
  40   * @category  form
  41   * @copyright 2009 Dongsheng Cai <dongsheng@moodle.com>
  42   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  43   */
  44  class MoodleQuickForm_filemanager extends HTML_QuickForm_element implements templatable {
  45      use templatable_form_element {
  46          export_for_template as export_for_template_base;
  47      }
  48  
  49      /** @var string html for help button, if empty then no help will icon will be dispalyed. */
  50      public $_helpbutton = '';
  51  
  52      /** @var array options provided to initalize filemanager */
  53      // PHP doesn't support 'key' => $value1 | $value2 in class definition
  54      // We cannot do $_options = array('return_types'=> FILE_INTERNAL | FILE_REFERENCE);
  55      // So I have to set null here, and do it in constructor
  56      protected $_options = array('mainfile' => '', 'subdirs' => 1, 'maxbytes' => -1, 'maxfiles' => -1,
  57              'accepted_types' => '*', 'return_types' =>  null, 'areamaxbytes' => FILE_AREA_MAX_BYTES_UNLIMITED);
  58  
  59      /**
  60       * Constructor
  61       *
  62       * @param string $elementName (optional) name of the filemanager
  63       * @param string $elementLabel (optional) filemanager label
  64       * @param array $attributes (optional) Either a typical HTML attribute string
  65       *              or an associative array
  66       * @param array $options set of options to initalize filemanager
  67       */
  68      public function __construct($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
  69          global $CFG, $PAGE;
  70  
  71          $options = (array)$options;
  72          foreach ($options as $name=>$value) {
  73              if (array_key_exists($name, $this->_options)) {
  74                  $this->_options[$name] = $value;
  75              }
  76          }
  77          if (!empty($options['maxbytes'])) {
  78              $this->_options['maxbytes'] = get_user_max_upload_file_size($PAGE->context, $CFG->maxbytes, $options['maxbytes']);
  79          }
  80          if (empty($options['return_types'])) {
  81              $this->_options['return_types'] = (FILE_INTERNAL | FILE_REFERENCE | FILE_CONTROLLED_LINK);
  82          }
  83          $this->_type = 'filemanager';
  84          parent::__construct($elementName, $elementLabel, $attributes);
  85      }
  86  
  87      /**
  88       * Old syntax of class constructor. Deprecated in PHP7.
  89       *
  90       * @deprecated since Moodle 3.1
  91       */
  92      public function MoodleQuickForm_filemanager($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
  93          debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
  94          self::__construct($elementName, $elementLabel, $attributes, $options);
  95      }
  96  
  97      /**
  98       * Called by HTML_QuickForm whenever form event is made on this element
  99       *
 100       * @param string $event Name of event
 101       * @param mixed $arg event arguments
 102       * @param object $caller calling object
 103       * @return bool
 104       */
 105      function onQuickFormEvent($event, $arg, &$caller)
 106      {
 107          switch ($event) {
 108              case 'createElement':
 109                  $caller->setType($arg[0], PARAM_INT);
 110                  break;
 111          }
 112          return parent::onQuickFormEvent($event, $arg, $caller);
 113      }
 114  
 115      /**
 116       * Sets name of filemanager
 117       *
 118       * @param string $name name of the filemanager
 119       */
 120      function setName($name) {
 121          $this->updateAttributes(array('name'=>$name));
 122      }
 123  
 124      /**
 125       * Returns name of filemanager
 126       *
 127       * @return string
 128       */
 129      function getName() {
 130          return $this->getAttribute('name');
 131      }
 132  
 133      /**
 134       * Updates filemanager attribute value
 135       *
 136       * @param string $value value to set
 137       */
 138      function setValue($value) {
 139          $this->updateAttributes(array('value'=>$value));
 140      }
 141  
 142      /**
 143       * Returns filemanager attribute value
 144       *
 145       * @return string
 146       */
 147      function getValue() {
 148          return $this->getAttribute('value');
 149      }
 150  
 151      /**
 152       * Returns maximum file size which can be uploaded
 153       *
 154       * @return int
 155       */
 156      function getMaxbytes() {
 157          return $this->_options['maxbytes'];
 158      }
 159  
 160      /**
 161       * Sets maximum file size which can be uploaded
 162       *
 163       * @param int $maxbytes file size
 164       */
 165      function setMaxbytes($maxbytes) {
 166          global $CFG, $PAGE;
 167          $this->_options['maxbytes'] = get_user_max_upload_file_size($PAGE->context, $CFG->maxbytes, $maxbytes);
 168      }
 169  
 170      /**
 171       * Returns the maximum size of the area.
 172       *
 173       * @return int
 174       */
 175      function getAreamaxbytes() {
 176          return $this->_options['areamaxbytes'];
 177      }
 178  
 179      /**
 180       * Sets the maximum size of the area.
 181       *
 182       * @param int $areamaxbytes size limit
 183       */
 184      function setAreamaxbytes($areamaxbytes) {
 185          $this->_options['areamaxbytes'] = $areamaxbytes;
 186      }
 187  
 188      /**
 189       * Returns true if subdirectoy can be created, else false
 190       *
 191       * @return bool
 192       */
 193      function getSubdirs() {
 194          return $this->_options['subdirs'];
 195      }
 196  
 197      /**
 198       * Set option to create sub directory, while uploading  file
 199       *
 200       * @param bool $allow true if sub directory can be created.
 201       */
 202      function setSubdirs($allow) {
 203          $this->_options['subdirs'] = $allow;
 204      }
 205  
 206      /**
 207       * Returns maximum number of files which can be uploaded
 208       *
 209       * @return int
 210       */
 211      function getMaxfiles() {
 212          return $this->_options['maxfiles'];
 213      }
 214  
 215      /**
 216       * Sets maximum number of files which can be uploaded.
 217       *
 218       * @param int $num number of files
 219       */
 220      function setMaxfiles($num) {
 221          $this->_options['maxfiles'] = $num;
 222      }
 223  
 224      /**
 225       * Returns html for help button.
 226       *
 227       * @return string html for help button
 228       */
 229      function getHelpButton() {
 230          return $this->_helpbutton;
 231      }
 232  
 233      /**
 234       * Returns type of filemanager element
 235       *
 236       * @return string
 237       */
 238      function getElementTemplateType() {
 239          if ($this->_flagFrozen){
 240              return 'nodisplay';
 241          } else {
 242              return 'default';
 243          }
 244      }
 245  
 246      /**
 247       * Returns HTML for filemanager form element.
 248       *
 249       * @return string
 250       */
 251      function toHtml() {
 252          global $CFG, $USER, $COURSE, $PAGE, $OUTPUT;
 253          require_once("$CFG->dirroot/repository/lib.php");
 254  
 255          // security - never ever allow guest/not logged in user to upload anything or use this element!
 256          if (isguestuser() or !isloggedin()) {
 257              print_error('noguest');
 258          }
 259  
 260          if ($this->_flagFrozen) {
 261              return $this->getFrozenHtml();
 262          }
 263  
 264          $id          = $this->_attributes['id'];
 265          $elname      = $this->_attributes['name'];
 266          $subdirs     = $this->_options['subdirs'];
 267          $maxbytes    = $this->_options['maxbytes'];
 268          $draftitemid = $this->getValue();
 269          $accepted_types = $this->_options['accepted_types'];
 270  
 271          if (empty($draftitemid)) {
 272              // no existing area info provided - let's use fresh new draft area
 273              require_once("$CFG->libdir/filelib.php");
 274              $this->setValue(file_get_unused_draft_itemid());
 275              $draftitemid = $this->getValue();
 276          }
 277  
 278          $client_id = uniqid();
 279  
 280          // filemanager options
 281          $options = new stdClass();
 282          $options->mainfile  = $this->_options['mainfile'];
 283          $options->maxbytes  = $this->_options['maxbytes'];
 284          $options->maxfiles  = $this->getMaxfiles();
 285          $options->client_id = $client_id;
 286          $options->itemid    = $draftitemid;
 287          $options->subdirs   = $this->_options['subdirs'];
 288          $options->target    = $id;
 289          $options->accepted_types = $accepted_types;
 290          $options->return_types = $this->_options['return_types'];
 291          $options->context = $PAGE->context;
 292          $options->areamaxbytes = $this->_options['areamaxbytes'];
 293  
 294          $html = $this->_getTabs();
 295          $fm = new form_filemanager($options);
 296          $output = $PAGE->get_renderer('core', 'files');
 297          $html .= $output->render($fm);
 298  
 299          $html .= html_writer::empty_tag('input', array('value' => $draftitemid, 'name' => $elname, 'type' => 'hidden', 'id' => $id));
 300  
 301          if (!empty($options->accepted_types) && $options->accepted_types != '*') {
 302              $html .= html_writer::tag('p', get_string('filesofthesetypes', 'form'));
 303              $util = new \core_form\filetypes_util();
 304              $filetypes = $options->accepted_types;
 305              $filetypedescriptions = $util->describe_file_types($filetypes);
 306              $html .= $OUTPUT->render_from_template('core_form/filetypes-descriptions', $filetypedescriptions);
 307          }
 308  
 309          return $html;
 310      }
 311  
 312      public function export_for_template(renderer_base $output) {
 313          $context = $this->export_for_template_base($output);
 314          $context['html'] = $this->toHtml();
 315          return $context;
 316      }
 317  
 318      /**
 319       * Check that all files have the allowed type.
 320       *
 321       * @param int $value Draft item id with the uploaded files.
 322       * @return string|null Validation error message or null.
 323       */
 324      public function validateSubmitValue($value) {
 325  
 326          if (empty($value)) {
 327              return;
 328          }
 329  
 330          $filetypesutil = new \core_form\filetypes_util();
 331          $whitelist = $filetypesutil->normalize_file_types($this->_options['accepted_types']);
 332  
 333          if (empty($whitelist) || $whitelist === ['*']) {
 334              // Any file type is allowed, nothing to check here.
 335              return;
 336          }
 337  
 338          $draftfiles = file_get_all_files_in_draftarea($value);
 339          $wrongfiles = array();
 340  
 341          if (empty($draftfiles)) {
 342              // No file uploaded, nothing to check here.
 343              return;
 344          }
 345  
 346          foreach ($draftfiles as $file) {
 347              if (!$filetypesutil->is_allowed_file_type($file->filename, $whitelist)) {
 348                  $wrongfiles[] = $file->filename;
 349              }
 350          }
 351  
 352          if ($wrongfiles) {
 353              $a = array(
 354                  'whitelist' => implode(', ', $whitelist),
 355                  'wrongfiles' => implode(', ', $wrongfiles),
 356              );
 357              return get_string('err_wrongfileextension', 'core_form', $a);
 358          }
 359  
 360          return;
 361      }
 362  }
 363  
 364  /**
 365   * Data structure representing a file manager.
 366   *
 367   * This class defines the data structure for file mnager
 368   *
 369   * @package   core_form
 370   * @copyright 2010 Dongsheng Cai
 371   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 372   * @todo      do not use this abstraction (skodak)
 373   */
 374  class form_filemanager implements renderable {
 375      /** @var stdClass $options options for filemanager */
 376      public $options;
 377  
 378      /**
 379       * Constructor
 380       *
 381       * @param stdClass $options options for filemanager
 382       *   default options are:
 383       *       maxbytes=>-1,
 384       *       areamaxbytes => FILE_AREA_MAX_BYTES_UNLIMITED,
 385       *       maxfiles=>-1,
 386       *       itemid=>0,
 387       *       subdirs=>false,
 388       *       client_id=>uniqid(),
 389       *       acepted_types=>'*',
 390       *       return_types=>FILE_INTERNAL,
 391       *       context=>$PAGE->context,
 392       *       author=>fullname($USER),
 393       *       licenses=>array build from $CFG->licenses,
 394       *       defaultlicense=>$CFG->sitedefaultlicense
 395       */
 396      public function __construct(stdClass $options) {
 397          global $CFG, $USER, $PAGE;
 398          require_once($CFG->dirroot. '/repository/lib.php');
 399          require_once($CFG->libdir . '/licenselib.php');
 400          $defaults = array(
 401              'maxbytes'=>-1,
 402              'areamaxbytes' => FILE_AREA_MAX_BYTES_UNLIMITED,
 403              'maxfiles'=>-1,
 404              'itemid'=>0,
 405              'subdirs'=>0,
 406              'client_id'=>uniqid(),
 407              'accepted_types'=>'*',
 408              'return_types'=>FILE_INTERNAL,
 409              'context'=>$PAGE->context,
 410              'author'=>fullname($USER),
 411              'licenses'=>array()
 412              );
 413  
 414          $defaults['licenses'] = license_manager::get_licenses();
 415  
 416          if (!empty($CFG->sitedefaultlicense)) {
 417              $defaults['defaultlicense'] = $CFG->sitedefaultlicense;
 418          }
 419          foreach ($defaults as $key=>$value) {
 420              // Using !isset() prevents us from overwriting falsey values with defaults (as empty() did).
 421              if (!isset($options->$key)) {
 422                  $options->$key = $value;
 423              }
 424          }
 425  
 426          $fs = get_file_storage();
 427  
 428          // initilise options, getting files in root path
 429          $this->options = file_get_drafarea_files($options->itemid, '/');
 430  
 431          // calculate file count
 432          $usercontext = context_user::instance($USER->id);
 433          $files = $fs->get_area_files($usercontext->id, 'user', 'draft', $options->itemid, 'id', false);
 434          $filecount = count($files);
 435          $this->options->filecount = $filecount;
 436  
 437          // copying other options
 438          foreach ($options as $name=>$value) {
 439              $this->options->$name = $value;
 440          }
 441  
 442          // calculate the maximum file size as minimum from what is specified in filepicker options,
 443          // course options, global configuration and php settings
 444          $coursebytes = $maxbytes = 0;
 445          list($context, $course, $cm) = get_context_info_array($this->options->context->id);
 446          if (is_object($course)) {
 447              $coursebytes = $course->maxbytes;
 448          }
 449          if (!empty($this->options->maxbytes) && $this->options->maxbytes > 0) {
 450              $maxbytes = $this->options->maxbytes;
 451          }
 452          $this->options->maxbytes = get_user_max_upload_file_size($context, $CFG->maxbytes, $coursebytes, $maxbytes);
 453  
 454          $this->options->userprefs = array();
 455          $this->options->userprefs['recentviewmode'] = get_user_preferences('filemanager_recentviewmode', '');
 456          user_preference_allow_ajax_update('filemanager_recentviewmode', PARAM_INT);
 457  
 458          // building file picker options
 459          $params = new stdClass();
 460          $params->accepted_types = $options->accepted_types;
 461          $params->return_types = $options->return_types;
 462          $params->context = $options->context;
 463          $params->env = 'filemanager';
 464          $params->disable_types = !empty($options->disable_types)?$options->disable_types:array();
 465          $filepicker_options = initialise_filepicker($params);
 466          $this->options->filepicker = $filepicker_options;
 467      }
 468  
 469      public function get_nonjsurl() {
 470          global $PAGE;
 471          return new moodle_url('/repository/draftfiles_manager.php', array(
 472              'env'=>'filemanager',
 473              'action'=>'browse',
 474              'itemid'=>$this->options->itemid,
 475              'subdirs'=>$this->options->subdirs,
 476              'maxbytes'=>$this->options->maxbytes,
 477              'areamaxbytes' => $this->options->areamaxbytes,
 478              'maxfiles'=>$this->options->maxfiles,
 479              'ctx_id'=>$PAGE->context->id, // TODO ?
 480              'course'=>$PAGE->course->id, // TODO ?
 481              'sesskey'=>sesskey(),
 482              ));
 483      }
 484  }