Bug 1520781 - Fix date/time picker for screen readers. r=mkmelin

--HG--
extra : rebase_source : 76ace7521758676c4dd2b177d4189f00084f5a09

calendar/resources/content/datetimepickers/datetimepickers.js

@@ -779,6 +779,11 @@
 
             this.initializeAttributeInheritance();
 
+            this.addEventListener("keydown", (event) => {
+                if (event.key == "Escape") {
+                    this._popup.hidePopup();
+                }
+            });
             this._menulist.addEventListener("change", (event) => {
                 event.stopPropagation();
 

mail/base/content/mailWidgets.js

@@ -666,7 +666,7 @@ customElements.whenDefined("menulist").then(() => {
       // presented on XULComboboxAccessible generated from <menulist>;
       // hide these nodes from the accessibility tree.
       return document.importNode(MozXULElement.parseXULToFragment(`
-        <textbox class="menulist-input" allowevents="true" flex="1" role="none"/>
+        <textbox class="menulist-input" allowevents="true" flex="1"/>
         <hbox class="menulist-label-box" flex="1" role="none">
           <image class="menulist-icon" role="none"/>
           <label class="menulist-label" crop="right" flex="1" role="none"/>