From 2d6769b674428c771c1cb5119508da99ec6f97d4 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Sat, 8 Aug 2015 13:05:06 +0200
Subject: [PATCH] Add key bindings to open dropdown.

---
 Perspex.Controls/DropDown.cs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Perspex.Controls/DropDown.cs b/Perspex.Controls/DropDown.cs
index ea2c1d1a2c..69ac54bb75 100644
--- a/Perspex.Controls/DropDown.cs
+++ b/Perspex.Controls/DropDown.cs
@@ -67,6 +67,18 @@ namespace Perspex.Controls
             return new ItemContainerGenerator<ListBoxItem>(this);
         }
 
+        protected override void OnKeyDown(KeyEventArgs e)
+        {
+            base.OnKeyDown(e);
+
+            if (!e.Handled &&
+                (e.Key == Key.F4 || (e.Key == Key.Down && ((e.Device.Modifiers & ModifierKeys.Alt) != 0))))
+            {
+                this.IsDropDownOpen = !this.IsDropDownOpen;
+                e.Handled = true;
+            }
+        }
+
         protected override void OnPointerPressed(PointerPressEventArgs e)
         {
             if (!this.IsDropDownOpen)