Adopt reusable CI standard + helpers split (#61)
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peptiderepo
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inc/nav-walker.php
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123
inc/nav-walker.php
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<?php
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/**
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* Navigation Menu Walker & Primary Menu Fallback
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*
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* What: Custom nav walker that adds 'active' CSS classes, plus a fallback
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* menu rendered when no primary nav is assigned in WP admin.
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* Who calls it: header.php — wp_nav_menu() with walker => new Peptide_Starter_Nav_Walker(),
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* and the callback_function parameter for the fallback.
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* Dependencies: Walker_Nav_Menu (WordPress core).
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*
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* Extracted from inc/helpers.php in v2.3.0 to keep both files under 300 lines.
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*
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* @package peptide-starter
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*/
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// Exit if accessed directly.
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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/**
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* Navigation Menu Walker — adds active classes.
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*
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* What: Renders menu items with an 'active' class for current + ancestor items.
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* Who calls it: wp_nav_menu() in header.php with walker => new instance.
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* Dependencies: Walker_Nav_Menu.
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*/
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class Peptide_Starter_Nav_Walker extends Walker_Nav_Menu {
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/**
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* Render a single menu item.
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*
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* @param string $output Item output accumulator (passed by reference).
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* @param WP_Post $item Menu item data.
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* @param int $depth Menu depth.
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* @param stdClass $args Menu arguments.
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* @param int $id Current item ID.
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* @return void
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*/
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public function start_el( &$output, $item, $depth = 0, $args = null, $id = 0 ) {
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$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
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$classes = empty( $item->classes ) ? array() : (array) $item->classes;
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$classes[] = 'menu-item-' . $item->ID;
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if ( in_array( 'current-menu-item', $classes, true ) || in_array( 'current-menu-parent', $classes, true ) ) {
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$classes[] = 'active';
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}
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$args = apply_filters( 'nav_menu_item_args', $args, $item, $depth );
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$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args, $depth ) );
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$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
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$item_id = apply_filters( 'nav_menu_item_id', 'menu-item-' . $item->ID, $item, $args, $depth );
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$item_id = $item_id ? ' id="' . esc_attr( $item_id ) . '"' : '';
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$output .= $indent . '<li' . $item_id . $class_names . '>';
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$atts = array(
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'title' => ! empty( $item->attr_title ) ? $item->attr_title : '',
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'target' => ! empty( $item->target ) ? $item->target : '',
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'rel' => ! empty( $item->xfn ) ? $item->xfn : '',
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'href' => ! empty( $item->url ) ? $item->url : '',
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);
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$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args, $depth );
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$attributes = '';
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foreach ( $atts as $attr => $value ) {
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if ( ! empty( $value ) ) {
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$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
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$attributes .= ' ' . $attr . '="' . $value . '"';
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}
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}
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$title = apply_filters( 'the_title', $item->title, $item->ID );
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$link = $args->before;
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$link .= '<a' . $attributes . '>';
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$link .= $args->link_before . $title . $args->link_after;
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$link .= '</a>';
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$link .= $args->after;
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$output .= $link . "</li>\n";
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}
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}
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/**
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* Fallback menu when no primary nav is assigned in WP admin.
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*
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* Previously lived inline inside header.php; moved to inc/helpers.php in
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* v1.5.1 to prevent redeclaration, then extracted here in v2.3.0.
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*
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* @return void Echoes a complete <ul>.
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*/
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function peptide_starter_primary_menu_fallback() {
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?>
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<ul>
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<li><a href="<?php echo esc_url( home_url( '/' ) ); ?>"><?php esc_html_e( 'Home', 'peptide-starter' ); ?></a></li>
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<li class="menu-item-has-children">
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<a href="#"><?php esc_html_e( 'Tools', 'peptide-starter' ); ?></a>
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<ul class="sub-menu">
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<li><a href="<?php echo esc_url( home_url( '/calculator' ) ); ?>"><?php esc_html_e( 'Calculator', 'peptide-starter' ); ?></a></li>
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<li><a href="<?php echo esc_url( home_url( '/protocol-builder' ) ); ?>"><?php esc_html_e( 'Protocol Builder', 'peptide-starter' ); ?></a></li>
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<li><a href="<?php echo esc_url( home_url( '/tracker' ) ); ?>"><?php esc_html_e( 'Tracker', 'peptide-starter' ); ?></a></li>
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</ul>
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</li>
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<li class="menu-item-has-children">
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<a href="#"><?php esc_html_e( 'My Data', 'peptide-starter' ); ?></a>
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<ul class="sub-menu">
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<li><a href="<?php echo esc_url( home_url( '/peptides' ) ); ?>"><?php esc_html_e( 'Peptides', 'peptide-starter' ); ?></a></li>
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<li><a href="<?php echo esc_url( home_url( '/subject-log' ) ); ?>"><?php esc_html_e( 'Subject Log', 'peptide-starter' ); ?></a></li>
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</ul>
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</li>
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<li class="menu-item-has-children">
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<a href="#"><?php esc_html_e( 'Resources', 'peptide-starter' ); ?></a>
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<ul class="sub-menu">
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<li><a href="<?php echo esc_url( home_url( '/documentation' ) ); ?>"><?php esc_html_e( 'Documentation', 'peptide-starter' ); ?></a></li>
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<li><a href="<?php echo esc_url( home_url( '/news' ) ); ?>"><?php esc_html_e( 'Science Feed', 'peptide-starter' ); ?></a></li>
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</ul>
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</li>
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</ul>
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<?php
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}
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