path = plugins_url( '', __FILE__ ); $this->exclude_post_types = array( 'attachment', 'revision', 'nav_menu_item', 'safecss' ); // get options $defaults = array( // default options 'heading_text' => 'Contents', 'start' => 3, 'show_heading_text' => true, 'auto_insert_post_types' => array('page', 'post'), 'heading_levels' => array('1', '2', '3', '4', '5', '6'), 'show_hierarchy' => true, 'number_list_items' => true, ); $options = get_option( EXTENDED_TOC_ID, $defaults ); $this->options = wp_parse_args( $options, $defaults ); add_action( 'plugins_loaded', array(&$this, 'plugins_loaded') ); if( is_admin() ) { //Additional links on the plugin page add_filter('plugin_row_meta', array(&$this, 'register_plugin_links'), 10, 2); add_action('admin_init', array(&$this, 'admin_init')); add_action('admin_menu', array(&$this, 'admin_menu')); } else { /** Add the content filter and enqueue css **/ add_filter( 'the_content', array(&$this, 'the_content'), 100 ); add_action( 'wp_enqueue_scripts', array(&$this, 'wp_enqueue_scripts') ); } } public function __destruct() { } public function register_plugin_links($links, $file) { if( $file == plugin_basename(__FILE__) ) { $links[] = '' . __('Donate', EXTENDED_TOC_ID) . ''; } return $links; } public function admin_init() { wp_register_style( EXTENDED_TOC_ID, $this->path . '/admin-style.css', array(), EXTENDED_TOC_VERSION ); wp_enqueue_style(EXTENDED_TOC_ID); } public function admin_menu() { // Create menu tab $page = add_submenu_page( 'plugins.php', EXTENDED_TOC_NAME, EXTENDED_TOC_NAME, 'manage_options', EXTENDED_TOC_ID, array(&$this, 'admin_options') ); } private function save_admin_options() { global $post_id; // security check if ( !wp_verify_nonce( @$_POST[EXTENDED_TOC_ID], plugin_basename(__FILE__) ) ) return false; // require an administrator level to save if ( !current_user_can( 'manage_options', $post_id ) ) return false; $this->options = array_merge( $this->options, array( 'heading_text' => stripslashes( trim($_POST['heading_text']) ), 'auto_insert_post_types' => @(array)$_POST['auto_insert_post_types'], 'start' => intval($_POST['start']), 'show_heading_text' => (isset($_POST['show_heading_text']) && $_POST['show_heading_text']) ? true : false, 'show_hierarchy' => (isset($_POST['show_hierarchy']) && $_POST['show_hierarchy']) ? true : false, 'number_list_items' => (isset($_POST['number_list_items']) && $_POST['number_list_items']) ? true : false, ) ); // update_option will return false if no changes were made update_option( EXTENDED_TOC_ID, $this->options ); return true; } public function admin_options() { if( isset($_GET['update']) ) { if( $this->save_admin_options() ) $msg = '

' . __('Options saved.', EXTENDED_TOC_ID) . '

'; else $msg = '

' . __('Save failed.', EXTENDED_TOC_ID) . '

'; } ?>

options['show_heading_text'] ) echo ' checked="checked"'; ?> />
exclude_post_types) ): ?> options['auto_insert_post_types'])?' checked="checked"':''?> />
>
options['show_hierarchy'] ) echo ' checked="checked"'; ?> />
options['number_list_items'] ) echo ' checked="checked"'; ?> />

" name="submit" />

path . '/style.css', array(), POWER_TOC_VERSION); wp_enqueue_style(EXTENDED_TOC_ID); } public function plugins_loaded() { load_plugin_textdomain( EXTENDED_TOC_ID, false, dirname(plugin_basename(__FILE__)) . '/locale/' ); } public function the_content($content) { global $post; // Reset the counter $this->counter = array(); if ( is_feed() ) return $content; if( is_search() || is_archive() || is_front_page() ) return $content; /** Extract the content, and extract the part content if was used **/ $this->content = $content; // The original content (subpage) that is displayed $this->extract_full_post_content(); $toc_content = "
"; if( $this->options['show_heading_text'] == true ) $toc_content .= "

" . $this->options["heading_text"] . "

"; $toc_content .= "
"; if( $this->totalHeadings >= $this->options['start'] ) return $this->insert_toc_at_markup_position($toc_content); // $toc_content . $this->content; else return $this->content; } /** returns the content for display added by the ToC */ private function insert_toc_at_markup_position($toc_content) { // clean content without markups for returning $content = $this->content; $content = preg_replace("/\[extoc\]|\[noextoc\]/", "", $content); // [noextoc] has priority. If this is found, return the original if( strpos($this->content, '[noextoc]') !== false ) return $content; // try to find the markup for the ToC $pos = strpos($this->content, '[extoc]'); if( $pos === false ) { // There was no markup, so insert at top or return original if this type does not need a ToC if( !in_array(get_post_type($post), $this->options['auto_insert_post_types']) ) return $content; else return $toc_content . $content; } if( is_numeric($pos) && $pos >= 0 ) { return substr($content, 0, $pos) . $toc_content . substr($content, $pos); } // Absolute backup, return the content. This point should actually never be reached return $content; } /** Extract the full unshortened content from the post **/ private function extract_full_post_content() { global $post; $this->fullcontent = $post->post_content; $this->ID = $post->ID; } private function extract_toc() { /** check within the full content how many pages exists */ $this->extract_pages(); $headers = ""; /** Extract headings from every pages */ for( $pagenum = 1; $pagenum <= count($this->pages); $pagenum++ ) { $headers .= $this->exctract_headings($pagenum); } return $headers; } private function extract_pages() { /** Split the content by "nextpage"-tags if some exists */ $this->pages = preg_split("//msuU", $this->fullcontent); } private function exctract_headings($pagenum) { /** find all header tags within the page **/ preg_match_all('/(]*>).*<\/h\2>/msuU', $this->pages[$pagenum-1], $matches, PREG_SET_ORDER); /** Check the headings that are desired */ if( count($this->options['heading_levels']) != 6 ) { $new_matches = array(); for ($i = 0; $i < count($matches); $i++) { if ( in_array($matches[$i][2], $this->options['heading_levels']) ) $new_matches[] = $matches[$i]; } $matches = $new_matches; } // echo "
"; print_r($matches); echo "
"; $items = ""; /** Take first h-level as baseline */ if( $this->minLevel == null ) $this->minLevel = $matches[0][2]; // lowest level e.g. h3 $currentLevel = $this->minLevel; // $minLevel; for( $i = 0; $i < count($matches); $i++ ) { /** get anchor and add to find and replace arrays **/ $anchor = $this->url_encode_anchor($matches[$i][0]); $find = $matches[$i][0]; $replace = str_replace( array( $matches[$i][1], // start of heading '' // end of heading ), array( $matches[$i][1] . '', '' ), $matches[$i][0] ); $this->content = str_replace($find, $replace, $this->content); /** Check if header lower current header, then add level and update current header */ if( $matches[$i][2] > $currentLevel && $this->options['show_hierarchy'] == true) { $currentLevel = $matches[$i][2]; $this->counter[$currentLevel] = 1; // echo '$this->counter['.$currentLevel.'] = 1
'; } else if( $matches[$i][2] < $currentLevel && $matches[$i][2] >= $this->minLevel && $this->options['show_hierarchy'] == true) { $currentLevel = $matches[$i][2]; $this->counter[$currentLevel] += 1; // echo '$this->counter['.$currentLevel.'] += 1
'; } else { $this->counter[$currentLevel] += 1; // echo '$this->counter['.$currentLevel.'] += 1
'; } /** build html */ $items .= '
  • '; // echo $currentLevel . ' - ' . $this->minLevel . '
    '; $items .= ''; // Show numbers only if user wants it if( $this->options['number_list_items'] ) { $items .= ""; if( $this->options['show_hierarchy'] == true ) { for( $j = $this->minLevel; $j < $currentLevel; $j++ ) { $items = $items . $this->counter[$j] . "."; } } $items = $items . $this->counter[$currentLevel]; $items .= ""; } $items .= strip_tags($matches[$i][0]) . ''; $items .= '
  • '; $this->totalHeadings++; } return $items; } private function url_encode_anchor($anchor) { $return = false; if(!empty($anchor) ) { /** Remove tags */ $return = trim( strip_tags($anchor) ); /** remove & */ $return = str_replace( '&', '', $return ); /** remove all unknown chars **/ $return = preg_replace("/[^0-9a-zA-Z \-_]+/", "", $return); /** Remove backspace etc */ $return = preg_replace("/[\s]+/", "-", $return); /** If we now start or end with a - or _ remove it */ $return = preg_replace("/^[-_]/", "", $return); $return = preg_replace("/[-_]$/", "", $return); } return $return; } } } /** Initialise the class */ $tocPlugin = new ExToC(); ?>