fixed color changing bug on empty selection

1 files changed, 8 insertions, 5 deletions

diff --git a/src/client/util/SelectionManager.ts b/src/client/util/SelectionManager.ts
index 41e6ec786..3c396362e 100644
--- a/src/client/util/SelectionManager.ts
+++ b/src/client/util/SelectionManager.ts
@@ -44,11 +44,14 @@ export namespace SelectionManager {
 
     const manager = new Manager();
     reaction(() => manager.SelectedDocuments, sel => {
-        let firstView = sel[0];
-        let doc = firstView.props.Document;
-        let targetDoc = doc.isTemplate ? doc : Doc.GetProto(doc);
-        let targetColor = StrCast(targetDoc.backgroundColor);
-        targetColor = targetColor.length === 0 ? "#FFFFFFFF" : targetColor;
+        let targetColor = "#FFFFFF";
+        if (sel.length > 0) {
+            let firstView = sel[0];
+            let doc = firstView.props.Document;
+            let targetDoc = doc.isTemplate ? doc : Doc.GetProto(doc);
+            let stored = StrCast(targetDoc.backgroundColor);
+            stored.length > 0 && (targetColor = stored);
+        }
         InkingControl.Instance.updateSelectedColor(targetColor);
     });