loadStrings(array( 'confirmdeletekey' => 'xmldb', 'yes' => '', 'no' => '' )); } /** * Invoke method, every class will have its own * returns true/false on completion, setting both * errormsg and output as necessary */ function invoke() { parent::invoke(); $result = true; /// Set own core attributes $this->does_generate = ACTION_GENERATE_HTML; /// These are always here global $CFG, $XMLDB; /// Do the job, setting result as needed /// Get the dir containing the file $dirpath = required_param('dir', PARAM_PATH); $dirpath = $CFG->dirroot . stripslashes_safe($dirpath); $tableparam = required_param('table', PARAM_PATH); $keyparam = required_param('key', PARAM_PATH); $confirmed = optional_param('confirmed', false, PARAM_BOOL); /// If not confirmed, show confirmation box if (!$confirmed) { $o = ''; $o.= ' '; $o.= '

'; $o.= '

' . $this->str['confirmdeletekey'] . '

' . $keyparam . '

'; $o.= ' '; $o.= '

'; $o.= '

'; $this->output = $o; } else { /// Get the edited dir if (!empty($XMLDB->editeddirs)) { if (isset($XMLDB->editeddirs[$dirpath])) { $dbdir =& $XMLDB->dbdirs[$dirpath]; $editeddir =& $XMLDB->editeddirs[$dirpath]; if ($editeddir) { $structure =& $editeddir->xml_file->getStructure(); /// Move adjacent keys prev and next attributes $tables =& $structure->getTables(); $table =& $structure->getTable($tableparam); $keys =& $table->getKeys(); $key =& $table->getKey($keyparam); if ($key->getPrevious()) { $prev =& $table->getKey($key->getPrevious()); $prev->setNext($key->getNext()); } if ($key->getNext()) { $next =& $table->getKey($key->getNext()); $next->setPrevious($key->getPrevious()); } /// Remove the key $table->deleteKey($keyparam); /// Recalculate the hash $structure->calculateHash(true); /// If the hash has changed from the original one, change the version /// and mark the structure as changed $origstructure =& $dbdir->xml_file->getStructure(); if ($structure->getHash() != $origstructure->getHash()) { $structure->setVersion(userdate(time(), '%Y%m%d', 99, false)); $structure->setChanged(true); } } } } } /// Launch postaction if exists (leave this here!) if ($this->getPostAction() && $result) { return $this->launch($this->getPostAction()); } /// Return ok if arrived here return $result; } } ?>