/**
* Builds a tree of files This function is then called recursively.
*
* @static
* @todo take $search into account, and respect a threshold for dynamic loading
* @param file_info $fileinfo an object returned by file_browser::get_file_info()
* @param string $search searched string
* @param bool $dynamicmode no recursive call is done when in dynamic mode
* @param array $list the array containing the files under the passed $fileinfo
* @return int the number of files found
*/
public static function build_tree($fileinfo, $search, $dynamicmode, &$list)
{
global $CFG, $OUTPUT;
$filecount = 0;
$children = $fileinfo->get_children();
foreach ($children as $child) {
$filename = $child->get_visible_name();
$filesize = $child->get_filesize();
$filesize = $filesize ? display_size($filesize) : '';
$filedate = $child->get_timemodified();
$filedate = $filedate ? userdate($filedate) : '';
$filetype = $child->get_mimetype();
if ($child->is_directory()) {
$path = array();
$level = $child->get_parent();
while ($level) {
$params = $level->get_params();
$path[] = array($params['filepath'], $level->get_visible_name());
$level = $level->get_parent();
}
$tmp = array('title' => $child->get_visible_name(), 'size' => 0, 'date' => $filedate, 'path' => array_reverse($path), 'thumbnail' => $OUTPUT->pix_url(file_folder_icon(90))->out(false));
//if ($dynamicmode && $child->is_writable()) {
// $tmp['children'] = array();
//} else {
// if folder name matches search, we send back all files contained.
$_search = $search;
if ($search && stristr($tmp['title'], $search) !== false) {
$_search = false;
}
$tmp['children'] = array();
$_filecount = repository::build_tree($child, $_search, $dynamicmode, $tmp['children']);
if ($search && $_filecount) {
$tmp['expanded'] = 1;
}
//}
if (!$search || $_filecount || stristr($tmp['title'], $search) !== false) {
$filecount += $_filecount;
$list[] = $tmp;
}
} else {
// not a directory
// skip the file, if we're in search mode and it's not a match
if ($search && stristr($filename, $search) === false) {
continue;
}
$params = $child->get_params();
$source = serialize(array($params['contextid'], $params['component'], $params['filearea'], $params['itemid'], $params['filepath'], $params['filename']));
$list[] = array('title' => $filename, 'size' => $filesize, 'date' => $filedate, 'source' => base64_encode($source), 'icon' => $OUTPUT->pix_url(file_file_icon($child, 24))->out(false), 'thumbnail' => $OUTPUT->pix_url(file_file_icon($child, 90))->out(false));
$filecount++;
}
}
return $filecount;
}
/**
* Constructor of moodle_file_tree_viewer class
* @param file_info $file_info
* @param array $options
*/
public function __construct(file_info $file_info, array $options = null)
{
global $CFG;
//note: this MUST NOT use get_file_storage() !!!!!!!!!!!!!!!!!!!!!!!!!!!!
$this->options = (array) $options;
$this->context = $options['context'];
$this->tree = array();
$children = $file_info->get_children();
$current_file_params = $file_info->get_params();
$parent_info = $file_info->get_parent();
$level = $parent_info;
$this->path = array();
while ($level) {
$params = $level->get_params();
$context = context::instance_by_id($params['contextid']);
// $this->context is current context
if ($context->id != $this->context->id or empty($params['filearea'])) {
break;
}
// unset unused parameters
unset($params['component']);
unset($params['filearea']);
unset($params['filename']);
unset($params['itemid']);
$url = new moodle_url('/files/index.php', $params);
$this->path[] = html_writer::link($url, $level->get_visible_name());
$level = $level->get_parent();
}
$this->path = array_reverse($this->path);
if ($current_file_params['filepath'] != '/') {
$this->path[] = $file_info->get_visible_name();
}
foreach ($children as $child) {
$filedate = $child->get_timemodified();
$filesize = $child->get_filesize();
$mimetype = $child->get_mimetype();
$params = $child->get_params();
unset($params['component']);
unset($params['filearea']);
unset($params['filename']);
unset($params['itemid']);
$fileitem = array('params' => $params, 'filename' => $child->get_visible_name(), 'mimetype' => $child->get_mimetype(), 'filedate' => $filedate ? $filedate : '', 'filesize' => $filesize ? $filesize : '');
$url = new moodle_url('/files/index.php', $params);
if ($child->is_directory()) {
$fileitem['isdir'] = true;
$fileitem['url'] = $url->out(false);
} else {
$fileitem['url'] = $child->get_url();
}
$this->tree[] = $fileitem;
}
}
