<?php

/**
 * PHPPgAdmin v6.0.0-RC8
 */

namespace PHPPgAdmin\Controller;

use PHPPgAdmin\Decorators\Decorator;

/**
 * Base controller class.
 *
 * @package PHPPgAdmin
 */
class SequencesController extends BaseController
{
    public $controller_title = 'strsequences';

    /**
     * Default method to render the controller according to the action parameter.
     */
    public function render()
    {
        if ('tree' == $this->action) {
            return $this->doTree();
        }

        // Print header

        $this->printHeader();
        $this->printBody();

        switch ($this->action) {
            case 'create':
                $this->doCreateSequence();

                break;
            case 'save_create_sequence':
                if (isset($_POST['create'])) {
                    $this->doSaveCreateSequence();
                } else {
                    $this->doDefault();
                }

                break;
            case 'properties':
                $this->doProperties();

                break;
            case 'drop':
                if (isset($_POST['drop'])) {
                    $this->doDrop(false);
                } else {
                    $this->doDefault();
                }

                break;
            case 'confirm_drop':
                $this->doDrop(true);

                break;
            case 'restart':
                $this->doRestart();

                break;
            case 'reset':
                $this->doReset();

                break;
            case 'nextval':
                $this->doNextval();

                break;
            case 'setval':
                if (isset($_POST['setval'])) {
                    $this->doSaveSetval();
                } else {
                    $this->doDefault();
                }

                break;
            case 'confirm_setval':
                $this->doSetval();

                break;
            case 'alter':
                if (isset($_POST['alter'])) {
                    $this->doSaveAlter();
                } else {
                    $this->doDefault();
                }

                break;
            case 'confirm_alter':
                $this->doAlter();

                break;
            default:
                $this->doDefault();

                break;
        }

        // Print footer
        return $this->printFooter();
    }

    /**
     * Display list of all sequences in the database/schema.
     *
     * @param mixed $msg
     */
    public function doDefault($msg = '')
    {
        $data = $this->misc->getDatabaseAccessor();

        $this->printTrail('schema');
        $this->printTabs('schema', 'sequences');
        $this->printMsg($msg);

        // Get all sequences
        $sequences = $data->getSequences();

        $columns = [
            'sequence' => [
                'title' => $this->lang['strsequence'],
                'field' => Decorator::field('seqname'),
                'url'   => "sequences?action=properties&amp;{$this->misc->href}&amp;",
                'vars'  => ['sequence' => 'seqname'],
            ],
            'owner'    => [
                'title' => $this->lang['strowner'],
                'field' => Decorator::field('seqowner'),
            ],
            'actions'  => [
                'title' => $this->lang['stractions'],
            ],
            'comment'  => [
                'title' => $this->lang['strcomment'],
                'field' => Decorator::field('seqcomment'),
            ],
        ];

        $actions = [
            'multiactions' => [
                'keycols' => ['sequence' => 'seqname'],
                'url'     => 'sequences',
            ],
            'alter'        => [
                'content' => $this->lang['stralter'],
                'attr'    => [
                    'href' => [
                        'url'     => 'sequences',
                        'urlvars' => [
                            'action'   => 'confirm_alter',
                            'subject'  => 'sequence',
                            'sequence' => Decorator::field('seqname'),
                        ],
                    ],
                ],
            ],
            'drop'         => [
                'content'     => $this->lang['strdrop'],
                'attr'        => [
                    'href' => [
                        'url'     => 'sequences',
                        'urlvars' => [
                            'action'   => 'confirm_drop',
                            'sequence' => Decorator::field('seqname'),
                        ],
                    ],
                ],
                'multiaction' => 'confirm_drop',
            ],
            'privileges'   => [
                'content' => $this->lang['strprivileges'],
                'attr'    => [
                    'href' => [
                        'url'     => 'privileges',
                        'urlvars' => [
                            'subject'  => 'sequence',
                            'sequence' => Decorator::field('seqname'),
                        ],
                    ],
                ],
            ],
        ];

        echo $this->printTable($sequences, $columns, $actions, 'sequences-sequences', $this->lang['strnosequences']);

        $this->printNavLinks(['create' => [
            'attr'    => [
                'href' => [
                    'url'     => 'sequences',
                    'urlvars' => [
                        'action'   => 'create',
                        'server'   => $_REQUEST['server'],
                        'database' => $_REQUEST['database'],
                        'schema'   => $_REQUEST['schema'],
                    ],
                ],
            ],
            'content' => $this->lang['strcreatesequence'],
        ]], 'sequences-sequences', get_defined_vars());
    }

    /**
     * Generate XML for the browser tree.
     */
    public function doTree()
    {
        $data = $this->misc->getDatabaseAccessor();

        $sequences = $data->getSequences();

        $reqvars = $this->misc->getRequestVars('sequence');

        $attrs = [
            'text'    => Decorator::field('seqname'),
            'icon'    => 'Sequence',
            'toolTip' => Decorator::field('seqcomment'),
            'action'  => Decorator::actionurl(
                'sequences',
                $reqvars,
                [
                    'action'   => 'properties',
                    'sequence' => Decorator::field('seqname'),
                ]
            ),
        ];

        return $this->printTree($sequences, $attrs, 'sequences');
    }

    /**
     * Display the properties of a sequence.
     *
     * @param mixed $msg
     */
    public function doProperties($msg = '')
    {
        $data = $this->misc->getDatabaseAccessor();
        $this->printTrail('sequence');
        $this->printTitle($this->lang['strproperties'], 'pg.sequence');
        $this->printMsg($msg);

        // Fetch the sequence information
        $sequence = $data->getSequence($_REQUEST['sequence']);

        if (is_object($sequence) && $sequence->recordCount() > 0) {
            $sequence->fields['is_cycled'] = $data->phpBool($sequence->fields['is_cycled']);
            $sequence->fields['is_called'] = $data->phpBool($sequence->fields['is_called']);

            // Show comment if any
            if (null !== $sequence->fields['seqcomment']) {
                echo '<p class="comment">', $this->misc->printVal($sequence->fields['seqcomment']), '</p>'.PHP_EOL;
            }

            echo '<table border="0">';
            echo "<tr><th class=\"data\">{$this->lang['strname']}</th>";
            if ($data->hasAlterSequenceStart()) {
                echo "<th class=\"data\">{$this->lang['strstartvalue']}</th>";
            }
            echo "<th class=\"data\">{$this->lang['strlastvalue']}</th>";
            echo "<th class=\"data\">{$this->lang['strincrementby']}</th>";
            echo "<th class=\"data\">{$this->lang['strmaxvalue']}</th>";
            echo "<th class=\"data\">{$this->lang['strminvalue']}</th>";
            echo "<th class=\"data\">{$this->lang['strcachevalue']}</th>";
            echo "<th class=\"data\">{$this->lang['strlogcount']}</th>";
            echo "<th class=\"data\">{$this->lang['strcancycle']}</th>";
            echo "<th class=\"data\">{$this->lang['striscalled']}</th></tr>";
            echo '<tr>';
            echo '<td class="data1">', $this->misc->printVal($sequence->fields['seqname']), '</td>';
            if ($data->hasAlterSequenceStart()) {
                echo '<td class="data1">', $this->misc->printVal($sequence->fields['start_value']), '</td>';
            }
            echo '<td class="data1">', $this->misc->printVal($sequence->fields['last_value']), '</td>';
            echo '<td class="data1">', $this->misc->printVal($sequence->fields['increment_by']), '</td>';
            echo '<td class="data1">', $this->misc->printVal($sequence->fields['max_value']), '</td>';
            echo '<td class="data1">', $this->misc->printVal($sequence->fields['min_value']), '</td>';
            echo '<td class="data1">', $this->misc->printVal($sequence->fields['cache_value']), '</td>';
            echo '<td class="data1">', $this->misc->printVal($sequence->fields['log_cnt']), '</td>';
            echo '<td class="data1">', ($sequence->fields['is_cycled'] ? $this->lang['stryes'] : $this->lang['strno']), '</td>';
            echo '<td class="data1">', ($sequence->fields['is_called'] ? $this->lang['stryes'] : $this->lang['strno']), '</td>';
            echo '</tr>';
            echo '</table>';

            $navlinks = [
                'alter'   => [
                    'attr'    => [
                        'href' => [
                            'url'     => 'sequences',
                            'urlvars' => [
                                'action'   => 'confirm_alter',
                                'server'   => $_REQUEST['server'],
                                'database' => $_REQUEST['database'],
                                'schema'   => $_REQUEST['schema'],
                                'sequence' => $sequence->fields['seqname'],
                            ],
                        ],
                    ],
                    'content' => $this->lang['stralter'],
                ],
                'setval'  => [
                    'attr'    => [
                        'href' => [
                            'url'     => 'sequences',
                            'urlvars' => [
                                'action'   => 'confirm_setval',
                                'server'   => $_REQUEST['server'],
                                'database' => $_REQUEST['database'],
                                'schema'   => $_REQUEST['schema'],
                                'sequence' => $sequence->fields['seqname'],
                            ],
                        ],
                    ],
                    'content' => $this->lang['strsetval'],
                ],
                'nextval' => [
                    'attr'    => [
                        'href' => [
                            'url'     => 'sequences',
                            'urlvars' => [
                                'action'   => 'nextval',
                                'server'   => $_REQUEST['server'],
                                'database' => $_REQUEST['database'],
                                'schema'   => $_REQUEST['schema'],
                                'sequence' => $sequence->fields['seqname'],
                            ],
                        ],
                    ],
                    'content' => $this->lang['strnextval'],
                ],
                'restart' => [
                    'attr'    => [
                        'href' => [
                            'url'     => 'sequences',
                            'urlvars' => [
                                'action'   => 'restart',
                                'server'   => $_REQUEST['server'],
                                'database' => $_REQUEST['database'],
                                'schema'   => $_REQUEST['schema'],
                                'sequence' => $sequence->fields['seqname'],
                            ],
                        ],
                    ],
                    'content' => $this->lang['strrestart'],
                ],
                'reset'   => [
                    'attr'    => [
                        'href' => [
                            'url'     => 'sequences',
                            'urlvars' => [
                                'action'   => 'reset',
                                'server'   => $_REQUEST['server'],
                                'database' => $_REQUEST['database'],
                                'schema'   => $_REQUEST['schema'],
                                'sequence' => $sequence->fields['seqname'],
                            ],
                        ],
                    ],
                    'content' => $this->lang['strreset'],
                ],
                'showall' => [
                    'attr'    => [
                        'href' => [
                            'url'     => 'sequences',
                            'urlvars' => [
                                'server'   => $_REQUEST['server'],
                                'database' => $_REQUEST['database'],
                                'schema'   => $_REQUEST['schema'],
                            ],
                        ],
                    ],
                    'content' => $this->lang['strshowallsequences'],
                ],
            ];

            if (!$data->hasAlterSequenceStart()) {
                unset($navlinks['restart']);
            }

            $this->printNavLinks($navlinks, 'sequences-properties', get_defined_vars());
        } else {
            echo "<p>{$this->lang['strnodata']}</p>".PHP_EOL;
        }
    }

    /**
     * Drop a sequence.
     *
     * @param mixed $confirm
     * @param mixed $msg
     */
    public function doDrop($confirm, $msg = '')
    {
        $data = $this->misc->getDatabaseAccessor();

        if (empty($_REQUEST['sequence']) && empty($_REQUEST['ma'])) {
            return $this->doDefault($this->lang['strspecifysequencetodrop']);
        }

        if ($confirm) {
            $this->printTrail('sequence');
            $this->printTitle($this->lang['strdrop'], 'pg.sequence.drop');
            $this->printMsg($msg);

            echo '<form action="'.\SUBFOLDER.'/src/views/sequences" method="post">'.PHP_EOL;

            //If multi drop
            if (isset($_REQUEST['ma'])) {
                foreach ($_REQUEST['ma'] as $v) {
                    $a = unserialize(htmlspecialchars_decode($v, ENT_QUOTES));
                    echo '<p>', sprintf($this->lang['strconfdropsequence'], $this->misc->printVal($a['sequence'])), '</p>'.PHP_EOL;
                    printf('<input type="hidden" name="sequence[]" value="%s" />', htmlspecialchars($a['sequence']));
                }
            } else {
                echo '<p>', sprintf($this->lang['strconfdropsequence'], $this->misc->printVal($_REQUEST['sequence'])), '</p>'.PHP_EOL;
                echo '<input type="hidden" name="sequence" value="', htmlspecialchars($_REQUEST['sequence']), '" />'.PHP_EOL;
            }

            echo "<p><input type=\"checkbox\" id=\"cascade\" name=\"cascade\" /> <label for=\"cascade\">{$this->lang['strcascade']}</label></p>".PHP_EOL;
            echo '<p><input type="hidden" name="action" value="drop" />'.PHP_EOL;
            echo $this->misc->form;
            echo "<input type=\"submit\" name=\"drop\" value=\"{$this->lang['strdrop']}\" />".PHP_EOL;
            echo "<input type=\"submit\" name=\"cancel\" value=\"{$this->lang['strcancel']}\" /></p>".PHP_EOL;
            echo '</form>'.PHP_EOL;
        } else {
            if (is_array($_POST['sequence'])) {
                $msg    = '';
                $status = $data->beginTransaction();
                if (0 == $status) {
                    foreach ($_POST['sequence'] as $s) {
                        $status = $data->dropSequence($s, isset($_POST['cascade']));
                        if (0 == $status) {
                            $msg .= sprintf('%s: %s<br />', htmlentities($s, ENT_QUOTES, 'UTF-8'), $this->lang['strsequencedropped']);
                        } else {
                            $data->endTransaction();
                            $this->doDefault(sprintf('%s%s: %s<br />', $msg, htmlentities($s, ENT_QUOTES, 'UTF-8'), $this->lang['strsequencedroppedbad']));

                            return;
                        }
                    }
                }
                if (0 == $data->endTransaction()) {
                    // Everything went fine, back to the Default page....
                    $this->misc->setReloadBrowser(true);
                    $this->doDefault($msg);
                } else {
                    $this->doDefault($this->lang['strsequencedroppedbad']);
                }
            } else {
                $status = $data->dropSequence($_POST['sequence'], isset($_POST['cascade']));
                if (0 == $status) {
                    $this->misc->setReloadBrowser(true);
                    $this->doDefault($this->lang['strsequencedropped']);
                } else {
                    $this->doDrop(true, $this->lang['strsequencedroppedbad']);
                }
            }
        }
    }

    /**
     * Displays a screen where they can enter a new sequence.
     *
     * @param mixed $msg
     */
    public function doCreateSequence($msg = '')
    {
        $data = $this->misc->getDatabaseAccessor();

        $this->coalesceArr($_POST, 'formSequenceName', '');

        $this->coalesceArr($_POST, 'formIncrement', '');

        $this->coalesceArr($_POST, 'formMinValue', '');

        $this->coalesceArr($_POST, 'formMaxValue', '');

        $this->coalesceArr($_POST, 'formStartValue', '');

        $this->coalesceArr($_POST, 'formCacheValue', '');

        $this->printTrail('schema');
        $this->printTitle($this->lang['strcreatesequence'], 'pg.sequence.create');
        $this->printMsg($msg);

        echo '<form action="'.\SUBFOLDER.'/src/views/sequences" method="post">'.PHP_EOL;
        echo '<table>'.PHP_EOL;

        echo "<tr><th class=\"data left required\">{$this->lang['strname']}</th>".PHP_EOL;
        echo "<td class=\"data1\"><input name=\"formSequenceName\" size=\"32\" maxlength=\"{$data->_maxNameLen}\" value=\"",
        htmlspecialchars($_POST['formSequenceName']), '" /></td></tr>'.PHP_EOL;

        echo "<tr><th class=\"data left\">{$this->lang['strincrementby']}</th>".PHP_EOL;
        echo '<td class="data1"><input name="formIncrement" size="5" value="',
        htmlspecialchars($_POST['formIncrement']), '" /> </td></tr>'.PHP_EOL;

        echo "<tr><th class=\"data left\">{$this->lang['strminvalue']}</th>".PHP_EOL;
        echo '<td class="data1"><input name="formMinValue" size="5" value="',
        htmlspecialchars($_POST['formMinValue']), '" /></td></tr>'.PHP_EOL;

        echo "<tr><th class=\"data left\">{$this->lang['strmaxvalue']}</th>".PHP_EOL;
        echo '<td class="data1"><input name="formMaxValue" size="5" value="',
        htmlspecialchars($_POST['formMaxValue']), '" /></td></tr>'.PHP_EOL;

        echo "<tr><th class=\"data left\">{$this->lang['strstartvalue']}</th>".PHP_EOL;
        echo '<td class="data1"><input name="formStartValue" size="5" value="',
        htmlspecialchars($_POST['formStartValue']), '" /></td></tr>'.PHP_EOL;

        echo "<tr><th class=\"data left\">{$this->lang['strcachevalue']}</th>".PHP_EOL;
        echo '<td class="data1"><input name="formCacheValue" size="5" value="',
        htmlspecialchars($_POST['formCacheValue']), '" /></td></tr>'.PHP_EOL;

        echo "<tr><th class=\"data left\"><label for=\"formCycledValue\">{$this->lang['strcancycle']}</label></th>".PHP_EOL;
        echo '<td class="data1"><input type="checkbox" id="formCycledValue" name="formCycledValue" ',
        (isset($_POST['formCycledValue']) ? ' checked="checked"' : ''), ' /></td></tr>'.PHP_EOL;

        echo '</table>'.PHP_EOL;
        echo '<p><input type="hidden" name="action" value="save_create_sequence" />'.PHP_EOL;
        echo $this->misc->form;
        echo "<input type=\"submit\" name=\"create\" value=\"{$this->lang['strcreate']}\" />".PHP_EOL;
        echo "<input type=\"submit\" name=\"cancel\" value=\"{$this->lang['strcancel']}\" /></p>".PHP_EOL;
        echo '</form>'.PHP_EOL;
    }

    /**
     * Actually creates the new sequence in the database.
     */
    public function doSaveCreateSequence()
    {
        $data = $this->misc->getDatabaseAccessor();

        // Check that they've given a name and at least one column
        if ('' == $_POST['formSequenceName']) {
            $this->doCreateSequence($this->lang['strsequenceneedsname']);
        } else {
            $status = $data->createSequence(
                $_POST['formSequenceName'],
                $_POST['formIncrement'],
                $_POST['formMinValue'],
                $_POST['formMaxValue'],
                $_POST['formStartValue'],
                $_POST['formCacheValue'],
                isset($_POST['formCycledValue'])
            );
            if (0 == $status) {
                $this->doDefault($this->lang['strsequencecreated']);
            } else {
                $this->doCreateSequence($this->lang['strsequencecreatedbad']);
            }
        }
    }

    /**
     * Restarts a sequence.
     */
    public function doRestart()
    {
        $data = $this->misc->getDatabaseAccessor();

        $status = $data->restartSequence($_REQUEST['sequence']);
        if (0 == $status) {
            $this->doProperties($this->lang['strsequencerestart']);
        } else {
            $this->doProperties($this->lang['strsequencerestartbad']);
        }
    }

    /**
     * Resets a sequence.
     */
    public function doReset()
    {
        $data = $this->misc->getDatabaseAccessor();

        $status = $data->resetSequence($_REQUEST['sequence']);
        if (0 == $status) {
            $this->doProperties($this->lang['strsequencereset']);
        } else {
            $this->doProperties($this->lang['strsequenceresetbad']);
        }
    }

    /**
     * Set Nextval of a sequence.
     */
    public function doNextval()
    {
        $data = $this->misc->getDatabaseAccessor();

        $status = $data->nextvalSequence($_REQUEST['sequence']);
        if (0 == $status) {
            $this->doProperties($this->lang['strsequencenextval']);
        } else {
            $this->doProperties($this->lang['strsequencenextvalbad']);
        }
    }

    /**
     * Function to save after 'setval'ing a sequence.
     */
    public function doSaveSetval()
    {
        $data = $this->misc->getDatabaseAccessor();

        $status = $data->setvalSequence($_POST['sequence'], $_POST['nextvalue']);
        if (0 == $status) {
            $this->doProperties($this->lang['strsequencesetval']);
        } else {
            $this->doProperties($this->lang['strsequencesetvalbad']);
        }
    }

    /**
     * Function to allow 'setval'ing of a sequence.
     *
     * @param mixed $msg
     */
    public function doSetval($msg = '')
    {
        $data = $this->misc->getDatabaseAccessor();

        $this->printTrail('sequence');
        $this->printTitle($this->lang['strsetval'], 'pg.sequence');
        $this->printMsg($msg);

        // Fetch the sequence information
        $sequence = $data->getSequence($_REQUEST['sequence']);

        if (is_object($sequence) && $sequence->recordCount() > 0) {
            echo '<form action="'.\SUBFOLDER.'/src/views/sequences" method="post">'.PHP_EOL;
            echo '<table border="0">';
            echo "<tr><th class=\"data left required\">{$this->lang['strlastvalue']}</th>".PHP_EOL;
            echo '<td class="data1">';
            echo "<input name=\"nextvalue\" size=\"32\" maxlength=\"{$data->_maxNameLen}\" value=\"",
            $this->misc->printVal($sequence->fields['last_value']), '" /></td></tr>'.PHP_EOL;
            echo '</table>'.PHP_EOL;
            echo '<p><input type="hidden" name="action" value="setval" />'.PHP_EOL;
            echo '<input type="hidden" name="sequence" value="', htmlspecialchars($_REQUEST['sequence']), '" />'.PHP_EOL;
            echo $this->misc->form;
            echo "<input type=\"submit\" name=\"setval\" value=\"{$this->lang['strsetval']}\" />".PHP_EOL;
            echo "<input type=\"submit\" name=\"cancel\" value=\"{$this->lang['strcancel']}\" /></p>".PHP_EOL;
            echo '</form>'.PHP_EOL;
        } else {
            echo "<p>{$this->lang['strnodata']}</p>".PHP_EOL;
        }
    }

    /**
     * Function to save after altering a sequence.
     */
    public function doSaveAlter()
    {
        $data = $this->misc->getDatabaseAccessor();

        $this->coalesceArr($_POST, 'owner', null);

        $this->coalesceArr($_POST, 'newschema', null);

        $this->coalesceArr($_POST, 'formIncrement', null);

        $this->coalesceArr($_POST, 'formMinValue', null);

        $this->coalesceArr($_POST, 'formMaxValue', null);

        $this->coalesceArr($_POST, 'formStartValue', null);

        $this->coalesceArr($_POST, 'formRestartValue', null);

        $this->coalesceArr($_POST, 'formCacheValue', null);

        $this->coalesceArr($_POST, 'formCycledValue', null);

        $status = $data->alterSequence(
            $_POST['sequence'],
            $_POST['name'],
            $_POST['comment'],
            $_POST['owner'],
            $_POST['newschema'],
            $_POST['formIncrement'],
            $_POST['formMinValue'],
            $_POST['formMaxValue'],
            $_POST['formRestartValue'],
            $_POST['formCacheValue'],
            isset($_POST['formCycledValue']),
            $_POST['formStartValue']
        );

        if (0 == $status) {
            if ($_POST['sequence'] != $_POST['name']) {
                // Jump them to the new view name
                $_REQUEST['sequence'] = $_POST['name'];
                // Force a browser reload
                $this->misc->setReloadBrowser(true);
            }
            if (!empty($_POST['newschema']) && ($_POST['newschema'] != $data->_schema)) {
                // Jump them to the new sequence schema
                $this->misc->setCurrentSchema($_POST['newschema']);
                $this->misc->setReloadBrowser(true);
            }
            $this->doProperties($this->lang['strsequencealtered']);
        } else {
            $this->doProperties($this->lang['strsequencealteredbad']);
        }
    }

    /**
     * Function to allow altering of a sequence.
     *
     * @param mixed $msg
     */
    public function doAlter($msg = '')
    {
        $data = $this->misc->getDatabaseAccessor();

        $this->printTrail('sequence');
        $this->printTitle($this->lang['stralter'], 'pg.sequence.alter');
        $this->printMsg($msg);

        // Fetch the sequence information
        $sequence = $data->getSequence($_REQUEST['sequence']);

        if (is_object($sequence) && $sequence->recordCount() > 0) {
            $this->coalesceArr($_POST, 'name', $_REQUEST['sequence']);

            $this->coalesceArr($_POST, 'comment', $sequence->fields['seqcomment']);

            $this->coalesceArr($_POST, 'owner', $sequence->fields['seqowner']);

            $this->coalesceArr($_POST, 'newschema', $sequence->fields['nspname']);

            // Handle Checkbox Value
            $sequence->fields['is_cycled'] = $data->phpBool($sequence->fields['is_cycled']);
            if ($sequence->fields['is_cycled']) {
                $_POST['formCycledValue'] = 'on';
            }

            echo '<form action="'.\SUBFOLDER.'/src/views/sequences" method="post">'.PHP_EOL;
            echo '<table>'.PHP_EOL;

            echo "<tr><th class=\"data left required\">{$this->lang['strname']}</th>".PHP_EOL;
            echo '<td class="data1">';
            echo "<input name=\"name\" size=\"32\" maxlength=\"{$data->_maxNameLen}\" value=\"",
            htmlspecialchars($_POST['name']), '" /></td></tr>'.PHP_EOL;

            if ($data->isSuperUser()) {
                // Fetch all users
                $users = $data->getUsers();

                echo "<tr><th class=\"data left required\">{$this->lang['strowner']}</th>".PHP_EOL;
                echo '<td class="data1"><select name="owner">';
                while (!$users->EOF) {
                    $uname = $users->fields['usename'];
                    echo '<option value="', htmlspecialchars($uname), '"',
                    ($uname == $_POST['owner']) ? ' selected="selected"' : '', '>', htmlspecialchars($uname), '</option>'.PHP_EOL;
                    $users->moveNext();
                }
                echo '</select></td></tr>'.PHP_EOL;
            }

            if ($data->hasAlterSequenceSchema()) {
                $schemas = $data->getSchemas();
                echo "<tr><th class=\"data left required\">{$this->lang['strschema']}</th>".PHP_EOL;
                echo '<td class="data1"><select name="newschema">';
                while (!$schemas->EOF) {
                    $schema = $schemas->fields['nspname'];
                    echo '<option value="', htmlspecialchars($schema), '"',
                    ($schema == $_POST['newschema']) ? ' selected="selected"' : '', '>', htmlspecialchars($schema), '</option>'.PHP_EOL;
                    $schemas->moveNext();
                }
                echo '</select></td></tr>'.PHP_EOL;
            }

            echo "<tr><th class=\"data left\">{$this->lang['strcomment']}</th>".PHP_EOL;
            echo '<td class="data1">';
            echo '<textarea rows="3" cols="32" name="comment">',
            htmlspecialchars($_POST['comment']), '</textarea></td></tr>'.PHP_EOL;

            if ($data->hasAlterSequenceStart()) {
                echo "<tr><th class=\"data left\">{$this->lang['strstartvalue']}</th>".PHP_EOL;
                echo '<td class="data1"><input name="formStartValue" size="5" value="',
                htmlspecialchars($sequence->fields['start_value']), '" /></td></tr>'.PHP_EOL;
            }

            echo "<tr><th class=\"data left\">{$this->lang['strrestartvalue']}</th>".PHP_EOL;
            echo '<td class="data1"><input name="formRestartValue" size="5" value="',
            htmlspecialchars($sequence->fields['last_value']), '" /></td></tr>'.PHP_EOL;

            echo "<tr><th class=\"data left\">{$this->lang['strincrementby']}</th>".PHP_EOL;
            echo '<td class="data1"><input name="formIncrement" size="5" value="',
            htmlspecialchars($sequence->fields['increment_by']), '" /> </td></tr>'.PHP_EOL;

            echo "<tr><th class=\"data left\">{$this->lang['strmaxvalue']}</th>".PHP_EOL;
            echo '<td class="data1"><input name="formMaxValue" size="5" value="',
            htmlspecialchars($sequence->fields['max_value']), '" /></td></tr>'.PHP_EOL;

            echo "<tr><th class=\"data left\">{$this->lang['strminvalue']}</th>".PHP_EOL;
            echo '<td class="data1"><input name="formMinValue" size="5" value="',
            htmlspecialchars($sequence->fields['min_value']), '" /></td></tr>'.PHP_EOL;

            echo "<tr><th class=\"data left\">{$this->lang['strcachevalue']}</th>".PHP_EOL;
            echo '<td class="data1"><input name="formCacheValue" size="5" value="',
            htmlspecialchars($sequence->fields['cache_value']), '" /></td></tr>'.PHP_EOL;

            echo "<tr><th class=\"data left\"><label for=\"formCycledValue\">{$this->lang['strcancycle']}</label></th>".PHP_EOL;
            echo '<td class="data1"><input type="checkbox" id="formCycledValue" name="formCycledValue" ',
            (isset($_POST['formCycledValue']) ? ' checked="checked"' : ''), ' /></td></tr>'.PHP_EOL;

            echo '</table>'.PHP_EOL;
            echo '<p><input type="hidden" name="action" value="alter" />'.PHP_EOL;
            echo $this->misc->form;
            echo '<input type="hidden" name="sequence" value="', htmlspecialchars($_REQUEST['sequence']), '" />'.PHP_EOL;
            echo "<input type=\"submit\" name=\"alter\" value=\"{$this->lang['stralter']}\" />".PHP_EOL;
            echo "<input type=\"submit\" name=\"cancel\" value=\"{$this->lang['strcancel']}\" /></p>".PHP_EOL;
            echo '</form>'.PHP_EOL;
        } else {
            echo "<p>{$this->lang['strnodata']}</p>".PHP_EOL;
        }
    }
}