From dd1c04acbf708111cee32a49f11663d779039581 Mon Sep 17 00:00:00 2001
From: Lucas Kellner <lucas.kellner@easecentral.com>
Date: Sat, 27 Apr 2019 13:41:12 -0400
Subject: [PATCH] numbercontrollerbox to respond to arrow inputs

---
 src/dat/controllers/NumberControllerBox.js | 30 +++++++++++++++++-----
 1 file changed, 24 insertions(+), 6 deletions(-)

diff --git a/src/dat/controllers/NumberControllerBox.js b/src/dat/controllers/NumberControllerBox.js
index 462ebf2..4c53f1b 100644
--- a/src/dat/controllers/NumberControllerBox.js
+++ b/src/dat/controllers/NumberControllerBox.js
@@ -93,12 +93,30 @@ class NumberControllerBox extends NumberController {
     dom.bind(this.__input, 'blur', onBlur);
     dom.bind(this.__input, 'mousedown', onMouseDown);
     dom.bind(this.__input, 'keydown', function(e) {
-      // When pressing enter, you can be as precise as you want.
-      if (e.keyCode === 13) {
-        _this.__truncationSuspended = true;
-        this.blur();
-        _this.__truncationSuspended = false;
-        onFinish();
+      switch (e.key) {
+        case 'Enter':
+        {
+          // When pressing enter, you can be as precise as you want.
+          _this.__truncationSuspended = true;
+          this.blur();
+          _this.__truncationSuspended = false;
+          onFinish();
+          break;
+        }
+        case 'ArrowUp':
+        {
+          _this.setValue(_this.getValue() + _this.__impliedStep)
+          break;
+        }
+        case 'ArrowDown':
+        {
+          _this.setValue(_this.getValue() - _this.__impliedStep)
+          break;
+        }
+        default:
+        {
+          break;
+        }
       }
     });