feat(forum): multi-tab topic widget lazy REST load

SSR first tab; other tabs fetch /forum/frontend/widgets/topics
on switch, with shared list markup and styles.

assets/css/frontend/widget-batch5.css

@@ -718,3 +718,61 @@
 .aksrt-badge-modal__card { padding: 12px 8px 8px; }
 .aksrt-badge-modal__actions { margin-top: 12px; }
 .aksrt-author-hero__badges { margin-top: 8px; }
+
+/* Forum tab topics (batch6) */
+.aksrt-ftab__nav {
+  display: flex;
+  gap: 6px;
+  list-style: none;
+  margin: 0 0 10px;
+  padding: 0;
+  overflow-x: auto;
+}
+.aksrt-ftab__btn {
+  border: 0;
+  background: var(--surface-2, #f3f4f6);
+  border-radius: 999px;
+  padding: 5px 12px;
+  font-size: 13px;
+  cursor: pointer;
+  color: inherit;
+}
+.aksrt-ftab__btn.is-active {
+  background: var(--color-primary, #3b82f6);
+  color: #fff;
+}
+.aksrt-ftab__panel { display: none; }
+.aksrt-ftab__panel.is-active { display: block; }
+.aksrt-ftab__empty { font-size: 13px; color: var(--muted-2-color, #999); padding: 8px 0; }
+.aksrt-ftopic-list { list-style: none; margin: 0; padding: 0; }
+.aksrt-ftopic-list__item {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+  padding: 7px 0;
+  border-bottom: 1px dashed var(--color-line, #eee);
+  font-size: 13px;
+}
+.aksrt-ftopic-list__item:last-child { border-bottom: 0; }
+.aksrt-ftopic-list__link {
+  color: inherit;
+  text-decoration: none;
+  flex: 1;
+  min-width: 0;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+.aksrt-ftopic-list__views { color: var(--muted-2-color, #999); font-size: 12px; flex-shrink: 0; }
+.aksrt-ftopic-list__meta {
+  display: flex;
+  gap: 8px;
+  font-size: 11px;
+  color: var(--muted-2-color, #999);
+  margin-top: 4px;
+}
+.aksrt-ftopic-list.is-detail .aksrt-ftopic-list__item {
+  flex-direction: column;
+  align-items: flex-start;
+}

src/AKSRT/Widgets/WidgetForumTabTopics.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Multi-tab forum topic lists (zibll zib_bbs_widget_ui_tab_posts lite).
+ * Multi-tab forum topic lists (zibll zib_bbs_widget_ui_tab_posts lite + lazy REST).
  *
  * @package AKSRT
  */
@@ -16,7 +16,7 @@ class WidgetForumTabTopics extends \WP_Widget {
 			'aksrt_forum_tab_topics',
 			esc_html__('论坛 - 多栏目帖子', 'aksrt'),
 			[
-				'description' => esc_html__('热门/最新/精华等栏目切换的帖子列表。', 'aksrt'),
+				'description' => esc_html__('热门/最新/精华等栏目切换的帖子列表（懒加载）。', 'aksrt'),
 				'classname'   => 'widget_aksrt_forum_tab_topics',
 			]
 		);
@@ -36,6 +36,7 @@ class WidgetForumTabTopics extends \WP_Widget {
 		}
 		$count = max(1, min(20, (int) ($instance['count'] ?? 6)));
 		$uid = 'aksrt-ftab-' . esc_attr($this->id);
+		$rest = rest_url('aksrt/v1/forum/frontend/widgets/topics');
 
 		echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 		$title = apply_filters('widget_title', (string) ($instance['title'] ?? ''), $instance, $this->id_base);
@@ -43,32 +44,60 @@ class WidgetForumTabTopics extends \WP_Widget {
 			echo $args['before_title'] . esc_html($title) . $args['after_title']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 		}
 
-		echo '<div class="aksrt-ftab" id="' . $uid . '">';
+		echo '<div class="aksrt-ftab" id="' . $uid . '" data-rest="' . esc_url($rest) . '" data-count="' . esc_attr((string) $count) . '">';
 		echo '<ul class="aksrt-ftab__nav" role="tablist">';
 		foreach ($tabs as $i => $tab) {
 			$cls = $i === 0 ? ' is-active' : '';
-			echo '<li><button type="button" class="aksrt-ftab__btn' . esc_attr($cls) . '" data-index="' . (int) $i . '">' . esc_html($tab['title']) . '</button></li>';
+			echo '<li><button type="button" class="aksrt-ftab__btn' . esc_attr($cls) . '" data-index="' . (int) $i . '" data-orderby="' . esc_attr($tab['orderby']) . '">' . esc_html($tab['title']) . '</button></li>';
 		}
 		echo '</ul>';
 
 		foreach ($tabs as $i => $tab) {
 			$cls = $i === 0 ? ' is-active' : '';
-			echo '<div class="aksrt-ftab__panel' . esc_attr($cls) . '" data-index="' . (int) $i . '">';
+			$loaded = $i === 0 ? '1' : '0';
-			$this->render_list($tab, $count);
+			echo '<div class="aksrt-ftab__panel' . esc_attr($cls) . '" data-index="' . (int) $i . '" data-loaded="' . esc_attr($loaded) . '">';
+			if ($i === 0) {
+				$payload = WidgetForumTopicLists::query_payload([
+					'count'    => $count,
+					'orderby'  => $tab['orderby'],
+					'style'    => 'mini',
+					'paginate' => 'none',
+				], 1);
+				echo $payload['html']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+			} else {
+				echo '<div class="post_ajax_loader" data-aksrt-ajax-loader></div>';
+			}
 			echo '</div>';
 		}
 		echo '</div>';
-
 		?>
 		<script>
 		(function(){
 			var root=document.getElementById(<?php echo wp_json_encode($uid); ?>);
 			if(!root||root._aksrtFtab)return; root._aksrtFtab=1;
+			var rest=root.getAttribute('data-rest')||'';
+			var count=root.getAttribute('data-count')||'6';
 			var btns=[].slice.call(root.querySelectorAll('.aksrt-ftab__btn'));
 			var panels=[].slice.call(root.querySelectorAll('.aksrt-ftab__panel'));
+			function load(panel, orderby){
+				if(!panel||panel.getAttribute('data-loaded')==='1'||!rest)return;
+				var qs=new URLSearchParams({page:'1',count:count,orderby:orderby||'date',style:'mini',paginate:'none'});
+				var url=rest+(rest.indexOf('?')>-1?'&':'?')+qs.toString();
+				panel.classList.add('is-ajax-loading');
+				fetch(url,{credentials:'same-origin',headers:{Accept:'application/json','X-WP-Nonce':(window.aksrtData&&aksrtData.restNonce)||''}})
+				.then(function(r){return r.json()}).then(function(j){
+					var d=(j&&j.data)||j||{};
+					var html=d.html||'';
+					panel.innerHTML=html||'<p class="aksrt-ftab__empty">暂无内容</p>';
+					panel.setAttribute('data-loaded','1');
+					panel.classList.remove('is-ajax-loading');
+				}).catch(function(){panel.classList.remove('is-ajax-loading');});
+			}
 			function go(i){
 				btns.forEach(function(b,idx){b.classList.toggle('is-active',idx===i);});
 				panels.forEach(function(p,idx){p.classList.toggle('is-active',idx===i);});
+				var btn=btns[i], panel=panels[i];
+				if(btn&&panel) load(panel, btn.getAttribute('data-orderby')||'date');
 			}
 			btns.forEach(function(b){ b.addEventListener('click', function(){ go(parseInt(b.getAttribute('data-index')||'0',10)); }); });
 		})();
@@ -78,105 +107,72 @@ class WidgetForumTabTopics extends \WP_Widget {
 		echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 	}
 
-	/**
-	 * @param array{title:string,orderby:string} $tab
-	 */
-	private function render_list(array $tab, int $count): void {
-		$query = [
-			'post_type'      => 'aksrt_forum_topic',
-			'post_status'    => 'publish',
-			'posts_per_page' => $count,
-			'order'          => 'DESC',
-		];
-		switch ($tab['orderby']) {
-			case 'views':
-				$query['meta_key'] = '_aksrt_views';
-				$query['orderby'] = 'meta_value_num';
-				break;
-			case 'comments':
-				$query['orderby'] = 'comment_count';
-				break;
-			case 'essence':
-				$query['meta_query'] = [[
-					'key'   => '_aksrt_essence',
-					'value' => '1',
-				]];
-				$query['orderby'] = 'date';
-				break;
-			default:
-				$query['orderby'] = 'date';
-		}
-		$q = new \WP_Query($query);
-		if (!$q->have_posts()) {
-			echo '<p class="aksrt-ftab__empty">' . esc_html__('暂无内容', 'aksrt') . '</p>';
-			wp_reset_postdata();
-			return;
-		}
-		echo '<ul class="aksrt-ftopic-list is-mini">';
-		while ($q->have_posts()) {
-			$q->the_post();
-			$views = (int) get_post_meta(get_the_ID(), '_aksrt_views', true);
-			echo '<li class="aksrt-ftopic-list__item">';
-			echo '<a class="aksrt-ftopic-list__link" href="' . esc_url(get_permalink()) . '">' . esc_html(get_the_title()) . '</a>';
-			echo '<span class="aksrt-ftopic-list__views">' . esc_html((string) $views) . '</span>';
-			echo '</li>';
-		}
-		echo '</ul>';
-		wp_reset_postdata();
-	}
-
 	/**
 	 * @param mixed $raw
-	 * @return array<int, array{title:string,orderby:string}>
+	 * @return list<array{title:string,orderby:string}>
 	 */
 	private function normalize_tabs($raw): array {
-		if (is_string($raw)) {
-			$decoded = json_decode($raw, true);
-			$raw = is_array($decoded) ? $decoded : [];
-		}
-		if (!is_array($raw)) {
-			return [];
-		}
 		$out = [];
-		foreach ($raw as $row) {
+		if (is_string($raw)) {
-			if (!is_array($row)) {
+			foreach (array_filter(explode("\n", $raw)) as $line) {
-				continue;
+				$parts = array_map('trim', explode('|', $line));
+				if ($parts[0] === '') {
+					continue;
+				}
+				$out[] = [
+					'title'   => $parts[0],
+					'orderby' => sanitize_key($parts[1] ?? 'date'),
+				];
 			}
-			$title = sanitize_text_field((string) ($row['title'] ?? ''));
+			return $out;
-			if ($title === '') {
+		}
-				continue;
+		if (is_array($raw)) {
-			}
+			foreach ($raw as $tab) {
-			$orderby = sanitize_key((string) ($row['orderby'] ?? 'date'));
+				if (!is_array($tab)) {
-			if (!in_array($orderby, ['date', 'views', 'comments', 'essence'], true)) {
+					continue;
-				$orderby = 'date';
+				}
-			}
+				$title = trim((string) ($tab['title'] ?? ''));
-			$out[] = ['title' => $title, 'orderby' => $orderby];
+				if ($title === '') {
-			if (count($out) >= 6) {
+					continue;
-				break;
+				}
+				$out[] = [
+					'title'   => $title,
+					'orderby' => sanitize_key((string) ($tab['orderby'] ?? 'date')),
+				];
 			}
 		}
 		return $out;
 	}
 
 	public function form($instance): void {
-		$tabs = is_string($instance['tabs'] ?? null)
+		$defaults = [
-			? (string) $instance['tabs']
+			'title' => __('论坛栏目', 'aksrt'),
-			: wp_json_encode($this->normalize_tabs($instance['tabs'] ?? []), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+			'count' => 6,
+			'tabs'  => "最新|date\n热门|views\n精华|essence",
+		];
+		$instance = wp_parse_args($instance, $defaults);
+		$tabs_val = $instance['tabs'];
+		if (is_array($tabs_val)) {
+			$lines = [];
+			foreach ($tabs_val as $t) {
+				$lines[] = ($t['title'] ?? '') . '|' . ($t['orderby'] ?? 'date');
+			}
+			$tabs_val = implode("\n", $lines);
+		}
 		?>
 		<p>
 			<label><?php esc_html_e('标题', 'aksrt'); ?>
-				<input class="widefat" type="text" name="<?php echo esc_attr($this->get_field_name('title')); ?>" value="<?php echo esc_attr((string) ($instance['title'] ?? '')); ?>">
+				<input class="widefat" type="text" name="<?php echo esc_attr($this->get_field_name('title')); ?>" value="<?php echo esc_attr((string) $instance['title']); ?>">
 			</label>
 		</p>
-		<p>
-			<label><?php esc_html_e('栏目 JSON', 'aksrt'); ?>
-				<textarea class="widefat" rows="5" name="<?php echo esc_attr($this->get_field_name('tabs')); ?>" placeholder='[{"title":"最新","orderby":"date"},{"title":"热门","orderby":"views"},{"title":"精华","orderby":"essence"}]'><?php echo esc_textarea((string) $tabs); ?></textarea>
-			</label>
-			<small><?php esc_html_e('orderby: date|views|comments|essence', 'aksrt'); ?></small>
-		</p>
 		<p>
 			<label><?php esc_html_e('每栏数量', 'aksrt'); ?>
-				<input class="tiny-text" type="number" min="1" max="20" name="<?php echo esc_attr($this->get_field_name('count')); ?>" value="<?php echo esc_attr((string) ((int) ($instance['count'] ?? 6))); ?>">
+				<input class="tiny-text" type="number" min="1" max="20" name="<?php echo esc_attr($this->get_field_name('count')); ?>" value="<?php echo esc_attr((string) $instance['count']); ?>">
+			</label>
+		</p>
+		<p>
+			<label><?php esc_html_e('栏目（每行: 标题|排序 date/views/essence/comments）', 'aksrt'); ?>
+				<textarea class="widefat" rows="4" name="<?php echo esc_attr($this->get_field_name('tabs')); ?>"><?php echo esc_textarea((string) $tabs_val); ?></textarea>
 			</label>
 		</p>
 		<?php
@@ -185,8 +181,8 @@ class WidgetForumTabTopics extends \WP_Widget {
 	public function update($new_instance, $old_instance): array {
 		return [
 			'title' => sanitize_text_field((string) ($new_instance['title'] ?? '')),
-			'tabs'  => $this->normalize_tabs($new_instance['tabs'] ?? []),
 			'count' => max(1, min(20, (int) ($new_instance['count'] ?? 6))),
+			'tabs'  => sanitize_textarea_field((string) ($new_instance['tabs'] ?? '')),
 		];
 	}
 }