Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * @package    tool_xmldb

 * @copyright  2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

/**

 * This class will delete completely one key

 *

 * @package    tool_xmldb

 * @copyright  2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class delete_key extends XMLDBAction {

    /**

     * Init method, every subclass will have its own

     */

    function init() {

        parent::init();

        // Set own custom attributes

        // Get needed strings

        $this->loadStrings(array(

            'confirmdeletekey' => 'tool_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 . $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 = '<table width="60" class="generaltable" border="0" cellpadding="5" cellspacing="0" id="notice">';

            $o.= '  <tr><td class="generalboxcontent">';

            $o.= '    <p class="centerpara">' . $this->str['confirmdeletekey'] . '<br /><br />' . $keyparam . '</p>';

            $o.= '    <table class="boxaligncenter" cellpadding="20"><tr><td>';

            $o.= '      <div class="singlebutton">';

            $o.= '        <form action="index.php?action=delete_key&amp;sesskey=' . sesskey() . '&amp;confirmed=yes&amp;postaction=edit_table&amp;key=' . $keyparam . '&amp;table=' . $tableparam . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '" method="post"><fieldset class="invisiblefieldset">';

            $o.= '          <input type="submit" value="'. $this->str['yes'] .'" /></fieldset></form></div>';

            $o.= '      </td><td>';

            $o.= '      <div class="singlebutton">';

            $o.= '        <form action="index.php?action=edit_table&amp;table=' . $tableparam . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '" method="post"><fieldset class="invisiblefieldset">';

            $o.= '          <input type="submit" value="'. $this->str['no'] .'" /></fieldset></form></div>';

            $o.= '      </td></tr>';

            $o.= '    </table>';

            $o.= '  </td></tr>';

            $o.= '</table>';

            $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;

    }

}