diff --git a/lib/zin/wg/docapp/js/v1.js b/lib/zin/wg/docapp/js/v1.js
index 148373a8c7..fac84448e7 100644
--- a/lib/zin/wg/docapp/js/v1.js
+++ b/lib/zin/wg/docapp/js/v1.js
@@ -1784,6 +1784,21 @@ function getApiID(id)
     return +id.replace('api.', '');
 }
 
+/**
+ * 获取列表类型。
+ * Get the list type.
+ *
+ * @param {object} docApp
+ * @returns {string}
+ */
+function getListType(docApp)
+{
+    docApp = docApp || getDocApp();
+    if(docApp.mode !== 'list' || docApp.module) return '';
+    const listType = docApp.signals.listType.value;
+    return listType;
+}
+
 /**
  * 定义页面上的自定义渲染器。
  * Define the custom renderers on the page.
@@ -1843,7 +1858,7 @@ const customRenders =
     list: function()
     {
         if(!isApiLib()) return;
-        const listType = this.signals.listType.value;
+        const listType = getListType(this);
         const libID = getApiID(this.libID);
         const releaseID = this.signals.libReleaseMap.value[libID] || 0;
         if(listType === 'structs') return {fetcher: $.createLink('api', 'struct', `libID=${this.libID}&releaseID=${releaseID}`), loadingText: getDocAppLang('loading'), className: 'api-struct-list'};
@@ -1857,7 +1872,7 @@ const customRenders =
     filters: function()
     {
         if(!isApiLib(null, this)) return;
-        const listType = this.signals.listType.value;
+        const listType = getListType(this);
         if(this.mode !== 'list' || !listType) return;
         return null;
     },
@@ -1869,7 +1884,7 @@ const customRenders =
     toolbar: function()
     {
         if(!isApiLib()) return;
-        const listType = this.signals.listType.value;
+        const listType = getListType(this);
         if(this.mode === 'list' && listType)
         {
             const libID = getApiID(this.libID);
@@ -1920,7 +1935,7 @@ const customRenders =
                 items[viewIndex] = ['lib', [libView, versionPicker]];
             }
         }
-        const listType = this.signals.listType.value;
+        const listType = getListType(this);
         if(this.mode !== 'list' || !listType) return items;
         if(listType === 'structs')  items.push([listType, zui.renderCustomContent({className: 'mx-2', content: getDocAppLang('struct')})]);
         if(listType === 'releases') items.push([listType, zui.renderCustomContent({className: 'mx-2', content: getDocAppLang('releases')})]);
@@ -1940,7 +1955,7 @@ const customRenders =
 
         const isListMode = this.mode === 'list';
         const lang       = getDocAppLang();
-        const listType   = this.signals.listType.value;
+        const listType   = getListType(this);
         const items      = [];
         if(canViewStructs) items.push({text: lang.struct, selected: listType === 'structs' && isListMode, icon: 'treemap muted', command: 'showStructs'}, {type: 'divider', className: 'my-1'});
         if(canViewReleases) items.push({text: lang.releases, selected: listType === 'releases' && isListMode, icon: 'version muted', command: 'showReleases'}, {type: 'divider', className: 'my-1'});
diff --git a/module/api/js/index.ui.js b/module/api/js/index.ui.js
index 3161ac7abf..5baa771047 100644
--- a/module/api/js/index.ui.js
+++ b/module/api/js/index.ui.js
@@ -1,3 +1,18 @@
+/**
+ * 获取列表类型。
+ * Get the list type.
+ *
+ * @param {object} docApp
+ * @returns {string}
+ */
+function getListType(docApp)
+{
+    docApp = docApp || getDocApp();
+    if(docApp.mode !== 'list' || docApp.module) return '';
+    const listType = docApp.signals.listType.value;
+    return listType;
+}
+
 /**
  * 定义页面上的自定义渲染器。
  * Define the custom renderers on the page.
@@ -49,7 +64,7 @@ const customRenders =
      */
     list: function()
     {
-        const listType = this.signals.listType.value;
+        const listType = getListType(this);
         const libID = this.libID;
         const releaseID = this.signals.libReleaseMap.value[libID] || 0;
         if(listType === 'structs') return {fetcher: $.createLink('api', 'struct', `libID=${this.libID}&releaseID=${releaseID}`), loadingText: getDocAppLang('loading'), className: 'api-struct-list'};
@@ -62,7 +77,7 @@ const customRenders =
      */
     filters: function()
     {
-        const listType = this.signals.listType.value;
+        const listType = getListType(this);
         if(this.mode !== 'list' || !listType) return;
         return null;
     },
@@ -73,7 +88,7 @@ const customRenders =
      */
     toolbar: function()
     {
-        const listType = this.signals.listType.value;
+        const listType = getListType(this);
         if(this.mode === 'list' && listType)
         {
             const items = [];
@@ -123,7 +138,7 @@ const customRenders =
                 items[viewIndex] = ['lib', [libView, versionPicker]];
             }
         }
-        const listType = this.signals.listType.value;
+        const listType = getListType(this);
         if(this.mode !== 'list' || !listType) return items;
         if(listType === 'structs')  items.push([listType, zui.renderCustomContent({className: 'mx-2', content: getDocAppLang('struct')})]);
         if(listType === 'releases') items.push([listType, zui.renderCustomContent({className: 'mx-2', content: getDocAppLang('releases')})]);
@@ -144,7 +159,7 @@ const customRenders =
 
         const isListMode = this.mode === 'list';
         const lang       = getDocAppLang();
-        const listType   = this.signals.listType.value;
+        const listType   = getListType(this);
         const items      = [];
         if(canViewStructs) items.push({text: lang.struct, selected: listType === 'structs' && isListMode, icon: 'treemap muted', command: 'showStructs'}, {type: 'divider', className: 'my-1'});
         if(canViewReleases) items.push({text: lang.releases, selected: listType === 'releases' && isListMode, icon: 'version muted', command: 'showReleases'}, {type: 'divider', className: 'my-1'});