* [ui] fix js error on open doc-quick.

lib/zin/wg/docapp/js/v1.js

@@ -61,10 +61,15 @@ function hasPriv(priv, value)
     return value !== undefined ? setting === value : !!setting;
 }
 
-function isApiLib(lib)
+function isApiLib(lib, docApp)
 {
     if(typeof lib === 'number') lib = getDocApp().getLib(lib);
-    lib = lib || getDocApp().lib;
+    if(!lib)
+    {
+        docApp = docApp || getDocApp();
+        if(!docApp) return false;
+        lib = docApp.lib;
+    }
     return lib && lib.data.type === 'api';
 }
 
@@ -612,8 +617,7 @@ const actionsMap =
      */
     'doc-list': function(info)
     {
-        const docApp    = getDocApp();
-        const lib       = docApp.lib;
+        const docApp    = this;
         const lang      = getLang();
         const canModify = canModifySpace();
 
@@ -1234,7 +1238,7 @@ const customRenders =
      */
     filters: function()
     {
-        if(!isApiLib()) return;
+        if(!isApiLib(null, this)) return;
         const listType = this.signals.listType.value;
         if(this.mode !== 'list' || !listType) return;
         return null;
@@ -1410,7 +1414,7 @@ function getFilterTypes(mode)
     }
     if(mode === 'list')
     {
-        const lib = getDocApp().lib;
+        const lib = this.lib;
         if(lib && lib.data.type === 'api') return getLang('apifilterTypes');
         return getLang('filterTypes');
     }