From 4972fed136ae64c1ee328a9cb2255e76a3d7f9c5 Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Mon, 26 Nov 2018 11:18:04 -0500
Subject: [PATCH] Don't show the combobox control for a readonly input field

---
 modules/lib/d3.combobox.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/modules/lib/d3.combobox.js b/modules/lib/d3.combobox.js
index c424b797c..c82be677f 100644
--- a/modules/lib/d3.combobox.js
+++ b/modules/lib/d3.combobox.js
@@ -241,7 +241,9 @@ export function d3combobox() {
         }
 
         function render() {
-            if (_suggestions.length >= _minItems && document.activeElement === input.node()) {
+            if (_suggestions.length >= _minItems &&
+                document.activeElement === input.node() &&
+                input.attr('readonly') === null) {
                 show();
             } else {
                 hide();