initial

var/Widget/Metas/Category/Rows.php

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+<?php
+
+namespace Widget\Metas\Category;
+
+use Typecho\Config;
+use Widget\Base\Metas;
+use Widget\Base\TreeViewTrait;
+
+if (!defined('__TYPECHO_ROOT_DIR__')) {
+    exit;
+}
+
+/**
+ * 分类输出组件
+ *
+ * @category typecho
+ * @package Widget
+ * @copyright Copyright (c) 2008 Typecho team (http://www.typecho.org)
+ * @license GNU General Public License 2.0
+ * @property-read int $levels
+ * @property-read array $children
+ */
+class Rows extends Metas
+{
+    use InitTreeRowsTrait;
+    use TreeViewTrait;
+
+    /**
+     * 执行函数
+     *
+     * @return void
+     */
+    public function execute()
+    {
+        $this->pushAll($this->getRows($this->orders, $this->parameter->ignore));
+    }
+
+    /**
+     * treeViewCategories
+     *
+     * @param mixed $categoryOptions 输出选项
+     */
+    public function listCategories($categoryOptions = null)
+    {
+        //初始化一些变量
+        $categoryOptions = Config::factory($categoryOptions);
+        $categoryOptions->setDefault([
+            'wrapTag'       => 'ul',
+            'wrapClass'     => '',
+            'itemTag'       => 'li',
+            'itemClass'     => '',
+            'showCount'     => false,
+            'showFeed'      => false,
+            'countTemplate' => '(%d)',
+            'feedTemplate'  => '<a href="%s">RSS</a>'
+        ]);
+
+        // 插件插件接口
+        self::pluginHandle()->trigger($plugged)->call('listCategories', $categoryOptions, $this);
+
+        if (!$plugged) {
+            $this->listRows(
+                $categoryOptions,
+                'category',
+                'treeViewCategoriesCallback',
+                intval($this->parameter->current)
+            );
+        }
+    }
+}