wp-plugins/all-in-one-seo-pack

<?php
/**
 * @package All-in-One-SEO-Pack 
 */
/**
 * The File Editor class. 
 */
if ( !class_exists( 'All_in_One_SEO_Pack_File_Editor' ) ) {
    class All_in_One_SEO_Pack_File_Editor extends All_in_One_SEO_Pack_Module {

        function All_in_One_SEO_Pack_File_Editor( ) {
            $this->name = __('File Editor', 'all-in-one-seo-pack');        // Human-readable name of the plugin
            $this->prefix = 'aiosp_file_editor_';                        // option prefix
            $this->file = __FILE__;                                        // the current file
            parent::__construct();
            if ( isset($_REQUEST['tab'] ) )
                $this->current_tab = $_REQUEST['tab'];
            else
                $this->current_tab = 'robots';

            $help_text = Array(
                'robotfile'    => __( 'Robots.txt editor', 'all-in-one-seo-pack' ),
                'htaccfile'    => __( '.htaccess editor', 'all-in-one-seo-pack' )
            );
            $this->default_options = array(
                    'robotfile'    => Array( 'name'      => __( 'Edit Robots.txt',  'all-in-one-seo-pack'),
                                          'save'      => false, 'default'      => '', 'type' => 'textarea', 'cols' => 70, 'rows' => 25, 'label' => 'top' ),
                    'htaccfile'    => Array( 'name'      => __( 'Edit .htaccess',  'all-in-one-seo-pack'),
                                          'save'      => false, 'default'      => '', 'type' => 'textarea', 'cols' => 70, 'rows' => 25, 'label' => 'top' )
            );

            if ( !empty( $help_text ) )
                foreach( $help_text as $k => $v )
                    $this->default_options[$k]['help_text'] = $v;
            $this->tabs = Array(
                    'robots' => Array( 'name' => __( 'robots.txt' ) ),
                    'htaccess' => Array( 'name' => __( '.htaccess' ) )
                );
            
            $this->layout = Array(
                'robots' => Array(
                        'name' => __( 'Edit robots.txt', 'all-in-one-seo-pack' ),
                        'options' => Array( 'robotfile' ),
                        'tab' => 'robots'
                    ),
                'htaccess' => Array(
                    'name' => __( 'Edit .htaccess', 'all-in-one-seo-pack' ),
                    'options' => Array( 'htaccfile' ),
                    'tab' => 'htaccess'
                    )
                );
            
            $this->update_options( );             // load initial options / set defaults        
        }
        
        function settings_page_init() {
            add_filter($this->prefix . 'display_options', Array( $this, 'filter_options' ), 10, 2 );
            add_filter($this->prefix . 'submit_options', Array( $this, 'filter_submit' ), 10, 2 );
        }
        
        function add_page_hooks() {
            parent::add_page_hooks();
            add_action($this->prefix . 'settings_update', Array($this, 'do_file_editor'), 10, 2 );
        }
        
        function filter_submit( $submit, $location ) {
            unset( $submit['Submit_Default'] );
            $submit['Submit']['type'] = 'hidden';
            if ( $this->current_tab == 'robots' )
                $submit['Submit_File_Editor']    = Array( 'type' => 'submit', 'class' => 'button-primary', 'value' => __('Update robots.txt', 'all-in-one-seo-pack') . ' &raquo;' );
            elseif ( $this->current_tab == 'htaccess' )
                $submit['Submit_htaccess']    = Array( 'type' => 'submit', 'class' => 'button-primary', 'value' => __('Update .htaccess', 'all-in-one-seo-pack') . ' &raquo;' );
            return $submit;
        }
        
        function filter_options( $options, $location ) {
            $prefix = $this->get_prefix( $location );
            if ( $this->current_tab == 'robots' )
                $options = $this->load_files( $options, Array( 'robotfile' => 'robots.txt' ), $prefix );            
            elseif ( $this->current_tab == 'htaccess' )
                $options = $this->load_files( $options, Array( 'htaccfile' => '.htaccess' ), $prefix );            
            return $options;
        }

        function do_file_editor( $options, $location ) {
            $prefix = $this->get_prefix( $location );
            if ( $this->current_tab == 'robots' && isset($_POST['Submit_File_Editor']) && $_POST['Submit_File_Editor'] )
                $this->save_files( Array( 'robotfile' => 'robots.txt' ), $prefix );
            elseif ( $this->current_tab == 'htaccess' && isset($_POST['Submit_htaccess']) && $_POST['Submit_htaccess'] )
                $this->save_files( Array( 'htaccfile' => '.htaccess' ), $prefix );
        }
    }
}