current code from svn, revision 62608

1 files changed, 584 insertions, 0 deletions

diff --git a/lib/classes/DataFieldEntry.class.php b/lib/classes/DataFieldEntry.class.php
new file mode 100644
index 0000000..552cc79
--- /dev/null
+++ b/lib/classes/DataFieldEntry.class.php
@@ -0,0 +1,584 @@
+<?php
+/**
+ * DataFieldEntry.class.php
+ *
+ * @author  Jan-Hendrik Willms <tleilax+studip@gmail.com>
+ * @author  Marcus Lunzenauer <mlunzena@uos.de>
+ * @author  Martin Gieseking <mgieseki@uos.de>
+ * @license GPL2 or any later version
+ */
+abstract class DataFieldEntry
+{
+    protected static $supported_types = [
+        'bool',
+        'textline',
+        'textlinei18n',
+        'textarea',
+        'textareai18n',
+        'textmarkup',
+        'textmarkupi18n',
+        'selectbox',
+        'selectboxmultiple',
+        'date',
+        'time',
+        'email',
+        'phone',
+        'radio',
+        'combo',
+        'link',
+    ];
+
+    protected $language = '';
+
+    /**
+     * Returns all supported datafield types.
+     *
+     * @param string Object type of the datafield.
+     * @return array of supported types
+     */
+    public static function getSupportedTypes($object_type = null)
+    {
+        // no i18n fields for descriptors
+        if (in_array($object_type, ['moduldeskriptor', 'modulteildeskriptor'])) {
+            return array_diff(
+                self::$supported_types,
+                [
+                    'textlinei18n',
+                    'textareai18n',
+                    'textmarkupi18n'
+                ]);
+        }
+        return self::$supported_types;
+    }
+
+    /**
+     * Returns the according class for a given type.
+     *
+     * @param String $type Type of the datafield
+     * @return String class name
+     */
+    private static function getClassForType($type)
+    {
+        if ($type === 'selectboxmultiple') {
+            return 'DataFieldSelectboxMultipleEntry';
+        }
+        return 'DataField' . ucfirst($type) . 'Entry';
+    }
+
+    /**
+     * Factory method that returns the appropriate datafield object
+     * for the given parameters.
+     *
+     * @param DataField $datafield Underlying structure
+     * @param String    $rangeID   Range id
+     * @param mixed     $value     Value of the entry
+     * @return DataFieldEntry instance of appropriate type
+     */
+    public static function createDataFieldEntry(DataField $datafield, $rangeID = '', $value = null)
+    {
+        $type = $datafield->type;
+        if (!in_array($type, self::getSupportedTypes())) {
+            return false;
+        }
+
+        $entry_class = self::getClassForType($type);
+        $entry = new $entry_class($datafield, $rangeID, $value);
+
+        return $entry;
+    }
+
+    /**
+     * Enter description here...
+     *
+     * @param unknown_type $range_id
+     * @param unknown_type $object_type
+     * @param unknown_type $object_class_hint
+     * @return unknown
+     */
+    public static function getDataFieldEntries($range_id, $object_type = '', $object_class_hint = '')
+    {
+        if (!$range_id) {
+            return []; // we necessarily need a range ID
+        }
+        $parameters = [];
+        if(is_array($range_id)) {
+            // rangeID may be an array ("classic" rangeID and second rangeID used for user roles)
+            $secRangeID = $range_id[1];
+            $rangeID = $range_id[0]; // to keep compatible with following code
+            if('usersemdata' !== $object_type && 'roleinstdata' !== $object_type) {
+                $object_type = 'userinstrole';
+            }
+            $clause1 = "AND sec_range_id= :sec_range_id";
+            $parameters[':sec_range_id'] = $secRangeID;
+        } else {
+            $rangeID = $range_id;
+        }
+        if (!$object_type) {
+            $object_type = get_object_type($rangeID);
+        }
+
+        if($object_type) {
+            switch ($object_type) {
+                case 'sem':
+                    if ($object_class_hint) {
+                        $object_class = SeminarCategories::GetByTypeId($object_class_hint);
+                    } else {
+                        $object_class = SeminarCategories::GetBySeminarId($rangeID);
+                    }
+
+                    $clause2 = "object_class = :object_class OR object_class IS NULL";
+                    $parameters[':object_class'] = (int) $object_class->id;
+                    $clause3 = 'a.institut_id IS NULL OR a.institut_id IN (:institut_ids)';
+                    $query = "SELECT institut_id FROM seminar_inst WHERE seminar_id = :seminar_id";
+                    $statement = DBManager::get()->prepare($query);
+                    $statement->execute([':seminar_id' => $rangeID]);
+                    $parameters[':institut_ids'] = array_keys($statement->fetchGrouped());
+                    break;
+                case 'inst':
+                case 'fak':
+
+                    if ($object_class_hint) {
+                        $object_class = $object_class_hint;
+                    } else {
+                        $query = "SELECT type FROM Institute WHERE Institut_id = ?";
+                        $statement = DBManager::get()->prepare($query);
+                        $statement->execute([$rangeID]);
+                        $object_class = $statement->fetchColumn();
+                    }
+                    $object_type = "inst";
+                    $clause2 = "object_class = :object_class OR object_class IS NULL";
+                    $parameters[':object_class'] = (int) $object_class;
+                    $clause3 = 'a.institut_id IS NULL OR a.institut_id = :institut_id';
+                    $parameters[':institut_id'] = $rangeID;
+                    break;
+                case 'roleinstdata': //hmm tja, vermutlich so
+                case 'moduldeskriptor':
+                case 'modulteildeskriptor':
+                case 'studycourse':
+                    $clause2 = '1';
+                    $clause3 = '1';
+                    if (is_array($range_id) && isset($range_id[0])) {
+                        $clause3 = 'a.institut_id IS NULL OR a.institut_id = :institut_id';
+                        $parameters[':institut_id'] = $range_id[0];
+                    }
+                    break;
+                case 'user':
+                case 'userinstrole':
+                case 'usersemdata':
+                    $object_class = is_object($GLOBALS['perm']) ? DataField::permMask($GLOBALS['perm']->get_perm($rangeID)) : 0;
+                    $clause2 = "((object_class & :object_class) OR object_class IS NULL)";
+                    $parameters[':object_class'] = (int) $object_class;
+
+                    $clause3 = 'a.institut_id IS NULL OR a.institut_id IN (:institut_ids)';
+                    $query = "SELECT institut_id FROM user_inst WHERE user_id = :user_id";
+                    $statement = DBManager::get()->prepare($query);
+                    $statement->execute([':user_id' => $rangeID]);
+                    $parameters[':institut_ids'] = array_keys($statement->fetchGrouped());
+                    break;
+            }
+            $query = "SELECT a.*, content
+                      FROM datafields AS a
+                      LEFT JOIN datafields_entries AS b
+                        ON (a.datafield_id = b.datafield_id AND range_id = :range_id {$clause1})
+                      WHERE object_type = :object_type AND ({$clause2}) AND ($clause3)
+                      ORDER BY priority";
+            $parameters[':range_id']    = $rangeID;
+            $parameters[':object_type'] = $object_type;
+
+            $rs = DBManager::get()->prepare($query);
+            $rs->execute($parameters);
+
+            $entries = [];
+            while ($data = $rs->fetch(PDO::FETCH_ASSOC)) {
+                $datafield = DataField::buildExisting($data);
+                $entries[$data['datafield_id']] = DataFieldEntry::createDataFieldEntry($datafield, $range_id, $data['content']);
+            }
+        }
+        return $entries ?: [];
+    }
+
+    /**
+     * Removes all datafields from a given range_id (and secondary range
+     * id if passed as array)
+     *
+     * @param mixed $range_id Range id (or array with range id and secondary
+     *                        range id)
+     * @return int representing the number of deleted entries
+     */
+    public static function removeAll($range_id)
+    {
+        if (is_array($range_id)) {
+            list ($rangeID, $secRangeID) = $range_id;
+        } else {
+            $rangeID = $range_id;
+            $secRangeID = "";
+        }
+
+        if (!$rangeID && !$secRangeID) {
+            return;
+        }
+
+        $conditions = [];
+        $parameters = [];
+
+        if ($rangeID) {
+            $conditions[] = 'range_id = ?';
+            $parameters[] = $rangeID;
+        }
+        if ($secRangeID) {
+            $conditions[] = 'sec_range_id = ?';
+            $parameters[] = $secRangeID;
+        }
+
+        $where = implode(' AND ', $conditions);
+
+        return DatafieldEntryModel::deleteBySQL($where, $parameters);
+    }
+
+    public $value;
+    public $model;
+    public $rangeID;
+
+    /**
+     * Constructs this datafield
+     *
+     * @param DataField $datafield Underlying model
+     * @param mixed $range_id Range id (or array with range id and secondary
+     *                        range id)
+     * @param mixed     $value     Value
+     */
+    public function __construct(DataField $datafield = null, $rangeID = '', $value = null)
+    {
+        $this->model   = $datafield;
+        $this->rangeID = $rangeID;
+        $this->value   = isset($value) ? $value : $datafield->default_value;
+    }
+
+    /**
+     * Stores this datafield entry
+     *
+     * @return int representing the number of changed entries
+     */
+    public function store()
+    {
+        $id = [
+            $this->model->id,
+            (string) $this->getRangeID(),
+            (string) $this->getSecondRangeID(),
+            (string) $this->language
+        ];
+        $entry = new DatafieldEntryModel($id);
+        $entry->lang = (string) $this->language;
+
+        $old_value = $entry->content;
+        $entry->content = $this->getValue();
+
+        if ($entry->content == $this->model->default_value) {
+            $result = $entry->isNew() ? 0 : $entry->delete();
+        } else {
+            $result = $entry->store();
+        }
+
+        if ($result) {
+            NotificationCenter::postNotification('DatafieldDidUpdate', $this, [
+                'changed'   => $result,
+                'old_value' => $old_value,
+            ]);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Returns whether this datafield is required
+     *
+     * @return bool indicating whether the datafield is required or not
+     */
+    public function isRequired()
+    {
+        return $this->model->is_required;
+    }
+
+    /**
+     * Returns the description of this datafield
+     *
+     * @return String containing the description
+     */
+    public function getDescription()
+    {
+        return $this->model->description;
+    }
+
+    /**
+     * Returns the type of this datafield
+     *
+     * @return string type of entry
+     */
+    public function getType()
+    {
+        $class = mb_strtolower(get_class($this));
+        return mb_substr($class, 9, mb_strpos($class, 'entry') - 9);
+    }
+
+    /**
+     * Returns the display/rendered value of this datafield
+     *
+     * @param bool $entities Should html entities be encoded (defaults to true)
+     * @return String containg the rendered value
+     */
+    public function getDisplayValue($entities = true)
+    {
+        if ($entities) {
+            return htmlReady($this->getValue());
+        }
+        return $this->getValue();
+    }
+
+    /**
+     * Returns the value of the datafield
+     *
+     * @return mixed containing the value
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Returns the name of the datafield
+     *
+     * @return String containing the name
+     */
+    public function getName()
+    {
+        return $this->model->name;
+    }
+
+    /**
+     * Returns the id of the datafield
+     *
+     * @return String containing the id
+     */
+    public function getId()
+    {
+        return $this->model->id;
+    }
+
+    /**
+     * Returns the according input elements as html for this datafield
+     *
+     * @param String $name      Name prefix of the associated input
+     * @param Array  $variables Additional variables
+     * @return String containing the required html
+     */
+    public function getHTML($name = '', $variables = [])
+    {
+        $variables = array_merge([
+            'name'  => $name,
+            'entry' => $this,
+            'model' => $this->model,
+            'value' => $this->getValue(),
+        ], $variables);
+
+        return $GLOBALS['template_factory']->render('datafields/' . $this->template, $variables);
+    }
+
+    /**
+     * Sets the value
+     *
+     * @param mixed $value The value
+     */
+    public function setValue($value)
+    {
+        $this->value = $value;
+    }
+
+    /**
+     * Sets the value from a post request
+     *
+     * @param mixed $submitted_value The value from request
+     */
+    public function setValueFromSubmit($submitted_value)
+    {
+        $this->setValue($submitted_value);
+    }
+
+    /**
+     * Sets the range id
+     *
+     * @param String $range_id Range id
+     */
+    public function setRangeID($range_id)
+    {
+        $this->rangeID = $range_id;
+    }
+
+    /**
+     * Sets the secondary range id
+     *
+     * @param String $sec_range_id Secondary range id
+     */
+    public function setSecondRangeID($sec_range_id)
+    {
+        $this->rangeID = [$this->getRangeID(), $sec_range_id];
+    }
+
+    /**
+     * Sets the prefered content language if this is an i18n datafield.
+     *
+     * @param string $language The prefered display language
+     */
+    public function setContentLanguage($language)
+    {
+        if (!Config::get()->CONTENT_LANGUAGES[$language]) {
+            throw new InvalidArgumentException('Language not configured.');
+        }
+
+        $languages = array_keys(Config::get()->CONTENT_LANGUAGES);
+        if ($language == reset($languages)) {
+            $language = '';
+        }
+
+        $this->language = $language;
+    }
+
+    /**
+     * Checks if datafield is empty (was not set)
+     *
+     * @return bool true if empty, else false
+     */
+    public function isEmpty()
+    {
+        return $this->getValue() == '';
+    }
+
+    /**
+     * Returns whether the datafield contents are valid
+     *
+     * @return boolean indicating whether the datafield contents are valid
+     */
+    public function isValid()
+    {
+        return trim($this->getValue())
+            || !$this->model->is_required;
+    }
+
+    /**
+     * Returns the number of html fields this datafield uses for input.
+     *
+     * @return int representing the number of html fields
+     */
+    public function numberOfHTMLFields()
+    {
+        return 1;
+    }
+
+    /**
+     * Returns the range id
+     *
+     * @return String containing the range id
+     */
+    public function getRangeID()
+    {
+        if (is_array($this->rangeID)) {
+            return reset($this->rangeID);
+        }
+        return $this->rangeID;
+    }
+
+    /**
+     * Returns the secondary range id
+     *
+     * @return String containing the secondary range id
+     */
+    public function getSecondRangeID()
+    {
+        if (is_array($this->rangeID)) {
+            list (, $secRangeID) = $this->rangeID;
+            return $secRangeID;
+        }
+        return '';
+    }
+
+    /**
+     * Returns whether the datafield is visible for the current user
+     *
+     * @param String $perm Permissions to test against (optional, default to
+     *                     the current user's permissions)
+     * @param bool $test_ownership Defines whether the ownership of the field
+     *                             should be taken into account; a field may
+     *                             be invisible for a user according to the
+     *                             permissions but since the datafield belongs
+     *                             to the user, it is visible.
+     * @return boolean indicating whether the datafield is visible
+     */
+    public function isVisible($perm = null, $test_ownership = true)
+    {
+        if ($test_ownership) {
+            return $this->model->accessAllowed($perm,
+                                               $GLOBALS['user']->id,
+                                               $this->getRangeID());
+        }
+        return $this->model->accessAllowed($perm);
+    }
+
+    /**
+     * Returns whether the datafield is editable for the current user
+     *
+     * @param mixed $perms Perms to test against (optional, defaults to logged
+     *                     in user's perms)
+     * @return boolean indicating whether the datafield is editable
+     */
+    public function isEditable($perms = null)
+    {
+        return $this->model->editAllowed($perms ?: $GLOBALS['perm']->get_perm());
+    }
+
+    /**
+     * Returns a human readable string describing the view permissions
+     *
+     * @return String containing the descriptons of the view permissions
+     */
+    public function getPermsDescription()
+    {
+        if ($this->model->view_perms === 'all') {
+            return _('sichtbar für alle');
+        }
+        return sprintf(_('sichtbar nur für Sie und alle %s'),
+                       $this->prettyPrintViewPerms());
+    }
+
+    /**
+     * Generates a full status description depending on the the perms
+     *
+     * @return string
+     */
+    protected function prettyPrintViewPerms()
+    {
+        switch ($this->model->view_perms) {
+            case 'all':
+                return _('alle');
+                break;
+            case 'root':
+                return _('Systemadministrator/-innen');
+                break;
+            case 'admin':
+                return _('Administrator/-innen');
+                break;
+            case 'dozent':
+                return _('Lehrenden');
+                break;
+            case 'tutor':
+                return _('Tutor/-innen');
+                break;
+            case 'autor':
+                return _('Studierenden');
+                break;
+            case 'user':
+                return _('Nutzer/-innen');
+                break;
+        }
+        return '';
+    }
+
+}