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Merge branch 'wip-MDL-33857-master' of git://github.com/marinaglancy/moodle

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This commit is contained in:
Sam Hemelryk
2012-10-16 13:31:44 +08:00
parent b10a5376d1 43aadf0401
commit 2bbf03ce3b
13 changed files with 1038 additions and 344 deletions
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mod/data/locallib.php
+67 -8
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@@ -492,20 +492,79 @@ class data_file_info_container extends file_info {
* @return array of file_info instances
*/
public function get_children() {
global $DB;
return $this->get_filtered_children('*', false, true);
}
$children = array();
$itemids = $DB->get_records('files', array('contextid' => $this->context->id, 'component' => $this->component,
'filearea' => $this->filearea), 'itemid DESC', "DISTINCT itemid");
foreach ($itemids as $itemid => $unused) {
if ($child = $this->browser->get_file_info($this->context, 'mod_data', $this->filearea, $itemid)) {
$children[] = $child;
}
/**
* Help function to return files matching extensions or their count
*
* @param string|array $extensions, either '*' or array of lowercase extensions, i.e. array('.gif','.jpg')
* @param bool|int $countonly if false returns the children, if an int returns just the
* count of children but stops counting when $countonly number of children is reached
* @param bool $returnemptyfolders if true returns items that don't have matching files inside
* @return array|int array of file_info instances or the count
*/
private function get_filtered_children($extensions = '*', $countonly = false, $returnemptyfolders = false) {
global $DB;
$params = array('contextid' => $this->context->id,
'component' => $this->component,
'filearea' => $this->filearea);
$sql = 'SELECT DISTINCT itemid
FROM {files}
WHERE contextid = :contextid
AND component = :component
AND filearea = :filearea';
if (!$returnemptyfolders) {
$sql .= ' AND filename <> :emptyfilename';
$params['emptyfilename'] = '.';
}
list($sql2, $params2) = $this->build_search_files_sql($extensions);
$sql .= ' '.$sql2;
$params = array_merge($params, $params2);
if ($countonly === false) {
$sql .= ' ORDER BY itemid DESC';
}
$rs = $DB->get_recordset_sql($sql, $params);
$children = array();
foreach ($rs as $record) {
if ($child = $this->browser->get_file_info($this->context, 'mod_data', $this->filearea, $record->itemid)) {
$children[] = $child;
}
if ($countonly !== false && count($children) >= $countonly) {
break;
}
}
$rs->close();
if ($countonly !== false) {
return count($children);
}
return $children;
}
/**
* Returns list of children which are either files matching the specified extensions
* or folders that contain at least one such file.
*
* @param string|array $extensions, either '*' or array of lowercase extensions, i.e. array('.gif','.jpg')
* @return array of file_info instances
*/
public function get_non_empty_children($extensions = '*') {
return $this->get_filtered_children($extensions, false);
}
/**
* Returns the number of children which are either files matching the specified extensions
* or folders containing at least one such file.
*
* @param string|array $extensions, for example '*' or array('.gif','.jpg')
* @param int $limit stop counting after at least $limit non-empty children are found
* @return int
*/
public function count_non_empty_children($extensions = '*', $limit = 1) {
return $this->get_filtered_children($extensions, $limit);
}
/**
* Returns parent file_info instance
*