导入 AKSRT 主题开发源码

templates/parts/docs/doc-chapter-nav.php

@@ -0,0 +1,70 @@
+<?php
+/**
+ * Document Chapter Navigation
+ *
+ * Shows previous/next chapter navigation at the bottom of a document page.
+ * Uses AKSRT_Docs_Presenter for chapter resolution.
+ *
+ * @package AKSRT
+ */
+
+defined('ABSPATH') || exit;
+
+$current_id = get_the_ID();
+
+$presenter = class_exists('AKSRT_Docs_Presenter') ? AKSRT_Docs_Presenter::get_instance() : null;
+
+if ($presenter) {
+    $nav = $presenter->get_chapter_nav($current_id);
+    $prev_page = $nav['prev'];
+    $next_page = $nav['next'];
+} else {
+    $parent_id = wp_get_post_parent_id($current_id);
+    $siblings = get_pages([
+        'parent'      => $parent_id ?: 0,
+        'sort_column' => 'menu_order, post_title',
+        'sort_order'  => 'ASC',
+        'post_status' => 'publish',
+    ]);
+
+    $current_index = -1;
+    foreach ($siblings as $i => $sibling) {
+        if ((int) $sibling->ID === $current_id) {
+            $current_index = $i;
+            break;
+        }
+    }
+
+    $prev_page = $current_index > 0 ? $siblings[$current_index - 1] : null;
+    $next_page = ($current_index >= 0 && $current_index < count($siblings) - 1)
+        ? $siblings[$current_index + 1]
+        : null;
+}
+
+if (!$prev_page && !$next_page) return;
+?>
+<nav class="aksrt-doc-chapter-nav" aria-label="<?php esc_attr_e('章节导航', 'aksrt'); ?>">
+    <?php if ($prev_page) : ?>
+        <a href="<?php echo esc_url(get_permalink($prev_page->ID)); ?>" class="aksrt-doc-chapter-nav__prev">
+            <span class="aksrt-doc-chapter-nav__label">
+                <i class="fas fa-arrow-left"></i>
+                <?php esc_html_e('上一篇', 'aksrt'); ?>
+            </span>
+            <span class="aksrt-doc-chapter-nav__title"><?php echo esc_html($prev_page->post_title); ?></span>
+        </a>
+    <?php else : ?>
+        <div class="aksrt-doc-chapter-nav__prev aksrt-doc-chapter-nav__prev--disabled"></div>
+    <?php endif; ?>
+
+    <?php if ($next_page) : ?>
+        <a href="<?php echo esc_url(get_permalink($next_page->ID)); ?>" class="aksrt-doc-chapter-nav__next">
+            <span class="aksrt-doc-chapter-nav__label">
+                <?php esc_html_e('下一篇', 'aksrt'); ?>
+                <i class="fas fa-arrow-right"></i>
+            </span>
+            <span class="aksrt-doc-chapter-nav__title"><?php echo esc_html($next_page->post_title); ?></span>
+        </a>
+    <?php else : ?>
+        <div class="aksrt-doc-chapter-nav__next aksrt-doc-chapter-nav__next--disabled"></div>
+    <?php endif; ?>
+</nav>