skodak
141 lines
5.4 KiB
PHP
141 lines
5.4 KiB
PHP
<?php // $Id$
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///////////////////////////////////////////////////////////////////////////
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// //
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// NOTICE OF COPYRIGHT //
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// //
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// Moodle - Modular Object-Oriented Dynamic Learning Environment //
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// http://moodle.com //
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// //
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// Copyright (C) 2001-3001 Martin Dougiamas http://dougiamas.com //
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// (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details: //
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// //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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///////////////////////////////////////////////////////////////////////////
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/// This class will will move one statement down
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class move_updown_statement extends XMLDBAction {
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/**
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* Init method, every subclass will have its own
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*/
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function init() {
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parent::init();
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/// Set own custom attributes
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/// Get needed strings
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$this->loadStrings(array(
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/// 'key' => 'module',
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));
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}
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/**
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* Invoke method, every class will have its own
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* returns true/false on completion, setting both
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* errormsg and output as necessary
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*/
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function invoke() {
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parent::invoke();
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$result = true;
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/// Set own core attributes
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$this->does_generate = ACTION_NONE;
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//$this->does_generate = ACTION_GENERATE_HTML;
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/// These are always here
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global $CFG, $XMLDB;
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/// Do the job, setting result as needed
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/// Get the dir containing the file
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$dirpath = required_param('dir', PARAM_PATH);
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$dirpath = $CFG->dirroot . stripslashes_safe($dirpath);
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/// Get the correct dirs
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if (!empty($XMLDB->dbdirs)) {
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$dbdir =& $XMLDB->dbdirs[$dirpath];
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} else {
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return false;
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}
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if (!empty($XMLDB->editeddirs)) {
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$editeddir =& $XMLDB->editeddirs[$dirpath];
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$structure =& $editeddir->xml_file->getStructure();
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}
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/// ADD YOUR CODE HERE
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$prev = NULL;
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$next = NULL;
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$statementparam = required_param('statement', PARAM_CLEAN);
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$direction = required_param('direction', PARAM_ALPHA);
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$statements =& $structure->getStatements();
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if ($direction == 'down') {
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$statement =& $structure->getStatement($statementparam);
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$swap =& $structure->getStatement($statement->getNext());
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} else {
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$swap =& $structure->getStatement($statementparam);
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$statement =& $structure->getStatement($swap->getPrevious());
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}
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/// Change the statement before the pair
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if ($statement->getPrevious()) {
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$prev =& $structure->getStatement($statement->getPrevious());
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$prev->setNext($swap->getName());
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$swap->setPrevious($prev->getName());
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$prev->setChanged(true);
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} else {
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$swap->setPrevious(NULL);
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}
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/// Change the statement after the pair
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if ($swap->getNext()) {
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$next =& $structure->getStatement($swap->getNext());
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$next->setPrevious($statement->getName());
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$statement->setNext($next->getName());
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$next->setChanged(true);
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} else {
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$statement->setNext(NULL);
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}
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/// Swap the statements
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$statement->setPrevious($swap->getName());
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$swap->setNext($statement->getName());
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/// Statement has changed
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$statement->setChanged(true);
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/// Reorder the structure
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$structure->orderStatements($statements);
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/// Send statements back to structure (the order above break refs)
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$structure->setStatements($statements);
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/// Recalculate the hash
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$structure->calculateHash(true);
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/// If the hash has changed from the original one, change the version
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/// and mark the structure as changed
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$origstructure =& $dbdir->xml_file->getStructure();
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if ($structure->getHash() != $origstructure->getHash()) {
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$structure->setVersion(userdate(time(), '%Y%m%d', 99, false));
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$structure->setChanged(true);
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}
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/// Launch postaction if exists (leave this here!)
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if ($this->getPostAction() && $result) {
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return $this->launch($this->getPostAction());
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}
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/// Return ok if arrived here
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return $result;
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}
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}
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?>
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