From 04c28ba5f23dc62c0be68c45e403fb7ebd497984 Mon Sep 17 00:00:00 2001
From: saqimtiaz <saq.imtiaz@gmail.com>
Date: Wed, 5 Feb 2020 13:14:38 +0100
Subject: [PATCH] Add tabindex support to button widgets (#4442)

This pull request adds support for specifying a tabindex for button widgets following the same pattern as the LinkWidget.
---
 core/modules/widgets/button.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/modules/widgets/button.js b/core/modules/widgets/button.js
index 34472309f..592e4c722 100644
--- a/core/modules/widgets/button.js
+++ b/core/modules/widgets/button.js
@@ -64,6 +64,10 @@ ButtonWidget.prototype.render = function(parent,nextSibling) {
 	if(this["aria-label"]) {
 		domNode.setAttribute("aria-label",this["aria-label"]);
 	}
+	// Set the tabindex
+	if(this.tabIndex) {
+		domNode.setAttribute("tabindex",this.tabIndex);
+	}	
 	// Add a click event handler
 	domNode.addEventListener("click",function (event) {
 		var handled = false;
@@ -205,6 +209,7 @@ ButtonWidget.prototype.execute = function() {
 	this.setField = this.getAttribute("setField");
 	this.setIndex = this.getAttribute("setIndex");
 	this.popupTitle = this.getAttribute("popupTitle");
+	this.tabIndex = this.getAttribute("tabindex");
 	// Make child widgets
 	this.makeChildWidgets();
 };