Pull request #1547: QFX-1645 refactor: down list combo item支持自定义

Merge in VISUAL/fineui from ~KIRA/fineui:master to master

* commit '8d367e73ed8dc8a679e63556f12eb698a0c6ed8c':
  QFX-1645 refactor: down list combo item支持自定义

src/widget/downlist/popup.downlist.js

@@ -133,7 +133,7 @@ BI.DownListPopup = BI.inherit(BI.Pane, {
                         item.el.childValues.push(child.value);
                     });
                 } else {
-                    item.type = "bi.down_list_item";
+                    item.type = item.type || "bi.down_list_item";
                     item.title = item.title || item.text;
                     item.textRgap = 10;
                     item.isNeedAdjustWidth = false;