extension.driver.php

<?php
/**
 * @package filemanager
 * @author thomas appel <mail@thomas-appel.com>

 * Displays <a href="http://opensource.org/licenses/gpl-3.0.html">GNU Public License</a>
 * @license http://opensource.org/licenses/gpl-3.0.html GNU Public License
 */

require_once(TOOLKIT . '/class.alert.php');

cLass extension_filemanager extends Extension
{

    public function getSubscribedDelegates()
    {
        return array(

            // Subsection Manager
            array(
                'page' => '/backend/',
                'delegate' => 'AdminPagePreGenerate',
                'callback' => '__appendAssets'
            ),
            array(
                'page' => '/system/preferences/',
                'delegate' => 'AddCustomPreferenceFieldsets',
                'callback' => '__appendPreferences'
            ),
            array(
                'page' => '/system/preferences/',
                'delegate' => 'Save',
                'callback' => 'save'
            ),
            array(
                'page' => '/backend/',
                'delegate' => 'AppendPageAlert',
                'callback' => '__checkDependencies'
            ),
        );
    }

    /**
     * TODO: Fix error catching
     */
    public function uninstall()
    {
        /* Drop configuration array */
        Symphony::Configuration()->remove('filemanager');
        Symphony::Configuration()->write();
        /* Drop database tables */
        try {
            Symphony::Database()->query("DROP TABLE `tbl_fields_filemanager`");
        } catch (DatabaseException $db_err) {

        }
        return true;
    }

    public function install()
    {
        if (!Symphony::Configuration()->get('filemanager')) {
            Symphony::Configuration()->set('mimetypes', 'application/pdf image/jpeg image/png text/*', 'filemanager');
            Symphony::Configuration()->set('ignore', base64_encode('^\..*'), 'filemanager');
            Symphony::Configuration()->write();
        }

        Symphony::Configuration()->write();
        Symphony::Database()->query(
            "CREATE TABLE IF NOT EXISTS `tbl_fields_filemanager` (
                `id` int(11) unsigned NOT NULL auto_increment,
                `field_id` int(11) unsigned NOT NULL,
                `destination` varchar(255) NOT NULL,
                `exclude_dirs` varchar(8000) default NULL,
                `ignore_files` varchar(255),
                `limit_files` int(11) default NULL,
                `allow_file_delete` tinyint(1) default '0',
                `allow_file_search` tinyint(1) default '1',
                `allow_sort_selected` tinyint(1) default '0',
                `select_uploaded_files` tinyint(1) default '0',
                `unique_file_name` tinyint(1) default '0',
                `allow_file_move` tinyint(1) default '0',
                `allow_dir_delete` tinyint(1) default '0',
                `allow_dir_move` tinyint(1) default '0',
                `allow_dir_create` tinyint(1) default '0',
                `allow_dir_upload_files` tinyint(1) default '0',
                `allowed_types` varchar(255),
                `display_mode` varchar(255),
                PRIMARY KEY (`id`),
                KEY `field_id` (`field_id`)
            ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;"
		);
		return true;
    }


    public static function hasInstance($ext_name=NULL, $section_handle)
    {
        if (!$sid = SectionManager::fetchIDFromHandle($section_handle)) {
        	return;
        }

        $section = SectionManager::fetch($sid);
        $fm = $section->fetchFields($ext_name);
        return is_array($fm) && !empty($fm);
    }

    /**
     * apend needed css an js files to the document head
    */
    public function __appendAssets($context)
    {
        $callback = Symphony::Engine()->getPageCallback();
        // Append styles for publish area
        if ($callback['driver'] === 'publish' && $callback['context']['page'] !== 'index' &&
        	isset($callback['context']['section_handle']) && !empty($callback['context']['section_handle'])
        ) {
            if (self::hasInstance('filemanager', $callback['context']['section_handle'])) {
                Administration::instance()->Page->addStylesheetToHead(URL . '/extensions/filemanager/assets/css/filemanager.publish.css', 'screen', 100, false);
                Administration::instance()->Page->addScriptToHead(URL . '/extensions/filemanager/assets/js/filemanager.init.js', 400, false);
            }
        }
    }

    /**
     * set fields for preference page
     */
    public function __appendPreferences(&$context)
    {
        $group = new XMLElement('fieldset');
        $group->setAttribute('class', 'settings');
        $group->appendChild(new XMLElement('legend', 'Filemanager'));

        $label = Widget::Label(__('Default MIME types'));
        $label->appendChild(
            Widget::Input(
                'settings[filemanager][mimetypes]',
                General::Sanitize(Symphony::Configuration()->get('mimetypes', 'filemanager'))
            )
        );
        $help = new XMLElement('p', __('Define the default mimetypes separated be a whitespace character that should be allowed for uploading. <br/> You can use wildcards as well, e.g. <code>text/*</code> will allow all text based mimetypes. Use a single <code>*</code> to allow all types of files (not recomended).'), array('class' => 'help'));
        $ca = array();
        array_push($ca, $label, $help);

        $group->appendChildArray($ca);

        $label = Widget::Label(__('Ignore files'));
        $label->appendChild(
            Widget::Input(
                'settings[filemanager][ignore]',
                //General::Sanitize(Symphony::Configuration()->get('ignore', 'filemanager'))
                base64_decode(Symphony::Configuration()->get('ignore', 'filemanager'))
            )
        );
        $help = new XMLElement('p', __('<code>RegExp:</code> Define which files should be ignored by the directory listing (default: ignores all dot-files <code>^\..*</code>. Separate expressions with a whitespace)'), array('class' => 'help'));

        $ca = array();
        array_push($ca, $label, $help);

        $group->appendChildArray($ca);

        $context['wrapper']->appendChild($group);
    }

    public function save(&$context)
    {
        if (!empty($context['settings']['filemanager']['ignore'])) {
            $context['settings']['filemanager']['ignore'] = base64_encode($context['settings']['filemanager']['ignore']);
        }
    }
    /**
     * @see http://symphony-cms.com/learn/api/2.2/toolkit/extension/#update
     */
    public function update($previousVersion)
    {
        $beta_dev = preg_match('/^\w+\s?/i', $previousVersion);
        $previousVersion = preg_replace('/^\w+\s?/i', '', $previousVersion);

        if ($beta_dev && version_compare($previousVersion, '1.2', '<')) {
            // sanitatize broken ignore regexp form beta 1.1 release
            $ignore = base64_decode(Symphony::Configuration()->get('ignore','filemanager'));
            $ignore = preg_replace('/(\/i?|\(|\))/i', '', $ignore);

            Symphony::Configuration()->set('ignore', base64_encode($ignore), 'filemanager');
            Symphony::Configuration()->write();
        }

        if (version_compare($previousVersion, '.0.5', '<')) {
            Symphony::Database()->query("ALTER TABLE `tbl_fields_filemanager` ADD COLUMN `allow_file_search` tinyint(1) default '1'");
        }
    }

    /**
     * Append a system alert if dependencies are not isntalled
     */
    public function __checkDependencies(&$context)
    {
		$bb_path = EXTENSIONS . '/sym_backbonejs/assets/backbone.js';

        if (!class_exists('extension_sym_requirejs')) {
            Symphony::Engine()->Page->Alert[] = new Alert(__('Filemanager requires requirejs. Please make sure the extension <a href="https://github.com/iwyg/sym_requirejs">sym_requirejs</a> is installed'), Alert::ERROR);
        }
        if (!is_file($bb_path)) {
            Symphony::Engine()->Page->Alert[] = new Alert(__('Filemanager requires backbonejs Please make sure extension <a href="https://github.com/iwyg/sym_backbonejs">sym_backbonejs</a> is available'), Alert::ERROR);
        }
    }
}