/**
* Attempts to import an entry as a mahara view
*
* We look for custom mahara namespaced tags that explain the View
* structure. If they're present, we use them to create a View using that
* structure.
*
* This differs a bit from the Leap2A specification, but we do so
* deliberately to get 100% compatibility with Mahara to Mahara exports.
* Other systems can also construct content in the right format to trigger
* Mahara to import things as a full view.
*
* If the mahara tags are not present, we give up.
*
* @param SimpleXMLElement $entry The entry to be imported
* @return boolean Whether it could be imported.
*/
private function import_entry_as_mahara_view(SimpleXMLElement $entry)
{
$config = $this->get_mahara_view_entry_data($entry);
if (!$config) {
return false;
}
$view = View::import_from_config($this->rewrite_blockinstance_config($config), $this->get('usr'), 'leap');
if ($published = strtotime((string) $entry->published)) {
$view->set('ctime', $published);
}
if ($updated = strtotime((string) $entry->updated)) {
$view->set('mtime', $updated);
}
$view->set('owner', $this->get('usr'));
$view->commit();
$this->viewids[(string) $entry->id] = $view->get('id');
return true;
}
/**
* Attempts to import an entry as a mahara view
*
* We look for custom mahara namespaced tags that explain the View
* structure. If they're present, we use them to create a View using that
* structure.
*
* This differs a bit from the Leap2A specification, but we do so
* deliberately to get 100% compatibility with Mahara to Mahara exports.
* Other systems can also construct content in the right format to trigger
* Mahara to import things as a full view.
*
* If the mahara tags are not present, we give up.
*
* @param SimpleXMLElement $entry The entry to be imported
* @return boolean Whether it could be imported.
*/
private function import_entry_as_mahara_view(SimpleXMLElement $entry)
{
static $blocktypes_installed = null;
static $viewlayouts = null;
static $viewtypes = null;
$viewelement = $entry->xpath('mahara:view[1]');
if (count($viewelement) != 1) {
// This isn't a Mahara view
return false;
}
if (is_null($viewlayouts)) {
$viewlayouts = get_records_assoc('view_layout', '', '', '', 'widths, id');
}
if (is_null($viewtypes)) {
$viewtypes = get_column('view_type', 'type');
}
$maharaattributes = PluginImportLeap::get_attributes($viewelement[0], PluginImportLeap::NS_MAHARA);
$layout = null;
if (isset($viewlayouts[$maharaattributes['layout']])) {
$layout = $viewlayouts[$maharaattributes['layout']]->id;
}
$type = 'portfolio';
if (isset($maharaattributes['type']) && in_array($maharaattributes['type'], $viewtypes)) {
$type = $maharaattributes['type'];
}
$ownerformat = intval($maharaattributes['ownerformat']);
if (!$ownerformat) {
$ownerformat = FORMAT_NAME_DISPLAYNAME;
}
$columns = $entry->xpath('mahara:view[1]/mahara:column');
$columncount = count($columns);
if ($columncount < 1 || $columncount > 5) {
// Whoops, invalid number of columns
$this->trace("Invalid number of columns specified for potential view {$entry->id}, falling back to standard import", self::LOG_LEVEL_VERBOSE);
return false;
}
$config = array('title' => (string) $entry->title, 'description' => (string) $entry->summary, 'type' => $type, 'layout' => $layout, 'tags' => self::get_entry_tags($entry), 'numcolumns' => $columncount, 'owner' => $this->get('usr'), 'ownerformat' => $ownerformat);
$col = 1;
foreach ($columns as $column) {
$blockinstances = $column->xpath('mahara:blockinstance');
$row = 1;
$config['columns'][$col] = array();
foreach ($blockinstances as $blockinstance) {
$attrs = self::get_attributes($blockinstance, PluginImportLeap::NS_MAHARA);
if (!isset($attrs['blocktype'])) {
$this->trace(" No mahara:blocktype attribute set for blockinstance at col {$col}, row {$row}: skipping");
continue;
}
$this->trace(" Found block with type {$attrs['blocktype']} at [{$col}][{$row}]", self::LOG_LEVEL_VERBOSE);
if ($blocktypes_installed === null) {
$blocktypes_installed = array_map(create_function('$a', 'return $a->name;'), plugins_installed('blocktype'));
}
if (in_array($attrs['blocktype'], $blocktypes_installed)) {
$configelements = $blockinstance->xpath('mahara:*');
$config['columns'][$col][$row] = array('type' => $attrs['blocktype'], 'title' => $attrs['blocktitle'], 'config' => array());
foreach ($configelements as $element) {
$value = json_decode((string) $element);
if (is_array($value) && isset($value[0])) {
$config['columns'][$col][$row]['config'][$element->getName()] = $value[0];
} else {
$this->trace(" Value for {$element->getName()} is not an array, ignoring (value follows below)");
$this->trace($value);
}
}
$row++;
} else {
$this->trace(" Ignoring unknown blocktype {$attrs['blocktype']}");
}
}
$col++;
}
$view = View::import_from_config($this->rewrite_artefact_ids($config), $this->get('usr'), 'leap');
if ($published = strtotime((string) $entry->published)) {
$view->set('ctime', $published);
}
if ($updated = strtotime((string) $entry->updated)) {
$view->set('mtime', $updated);
}
$view->set('owner', $this->get('usr'));
$view->commit();
$this->viewids[(string) $entry->id] = $view->get('id');
return true;
}
