diff --git a/src/components/TreeNode.vue b/src/components/TreeNode.vue
index 747e28d..50d9925 100644
--- a/src/components/TreeNode.vue
+++ b/src/components/TreeNode.vue
@@ -31,10 +31,20 @@
 
 <div :>
 
- <em + + <span v-show="!data?.isLeaf && !data?._loading">
+ <span v-if="showLine" @click="handleExpand">
+ <svg v-if="props.data?.expand" focusable="false" data-icon="minus-square" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M328 544h368c4.4 0 8-3.6 8-8v-48c0-4.4-3.6-8-8-8H328c-4.4 0-8 3.6-8 8v48c0 4.4 3.6 8 8 8z"></path><path d="M880 112H144c-17.7 0-32 14.3-32 32v736c0 17.7 14.3 32 32 32h736c17.7 0 32-14.3 32-32V144c0-17.7-14.3-32-32-32zm-40 728H184V184h656v656z"></path></svg>
+ <svg v-else focusable="false" data-icon="plus-square" height="1em" fill="currentColor" aria-hidden="true" viewBox="64 64 896 896"><path d="M328 544h152v152c0 4.4 3.6 8 8 8h48c4.4 0 8-3.6 8-8V544h152c4.4 0 8-3.6 8-8v-48c0-4.4-3.6-8-8-8H544V328c0-4.4-3.6-8-8-8h-48c-4.4 0-8 3.6-8 8v152H328c-4.4 0-8 3.6-8 8v48c0 4.4 3.6 8 8 8z"></path><path d="M880 112H144c-17.7 0-32 14.3-32 32v736c0 17.7 14.3 32 32 32h736c17.7 0 32-14.3 32-32V144c0-17.7-14.3-32-32-32zm-40 728H184V184h656v656z"></path></svg>
+ </span>
+ <em + v-else + @click="handleExpand" +></em>
+ </span>
 <loadingicon v-if="data?._loading" : />
 </div>
 
</div><div class="naked_ctrl">
<form action="/index.cgi/larger-text" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://patch-diff.githubusercontent.com/raw/wsfe/vue-tree/pull/128.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://patch-diff.githubusercontent.com/raw/wsfe/vue-tree/pull/128.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast">配色反転</option>
<option value="larger-text" selected="selected">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>