From 0850b5810f3ea94036ad6bb76c55c66378499a02 Mon Sep 17 00:00:00 2001
From: Vadim Lopatin <coolreader.org@gmail.com>
Date: Thu, 26 Feb 2015 17:37:45 +0300
Subject: [PATCH] tree expand icon fix

---
 src/dlangui/widgets/tree.d | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/dlangui/widgets/tree.d b/src/dlangui/widgets/tree.d
index bf2e1106..510d5ea5 100644
--- a/src/dlangui/widgets/tree.d
+++ b/src/dlangui/widgets/tree.d
@@ -540,11 +540,12 @@ class TreeItemWidget : HorizontalLayout {
         int w = level * style.font.size * 2;
         _tab.minWidth = w;
         _tab.maxWidth = w;
-        if (_item.hasChildren && _item.canCollapse()) {
+        if (_item.canCollapse()) {
             _expander = new ImageWidget("expander", _item.hasChildren && _item.expanded ? "arrow_right_down_black" : "arrow_right_hollow");
             _expander.styleId = STYLE_TREE_ITEM_EXPAND_ICON;
             _expander.clickable = true;
             _expander.trackHover = true;
+            _expander.visibility = _item.hasChildren ? Visibility.Visible : Visibility.Invisible;
             //_expander.setState(State.Parent);
 
             _expander.onClickListener = delegate(Widget source) {