Slack: Fix the role on the message entry text box.

jcsteh · jcsteh · commit e8b9e34c0bd8 · 2017-04-04T13:54:29.000+10:00
It was previously a textarea, but now it's a contentEditable div. Slack does set the role, but they incorrectly set it to textarea instead of textbox.
diff --git a/SlackA11yFixes.user.js b/SlackA11yFixes.user.js
@@ -81,6 +81,10 @@ function onNodeAdded(target) {
 		elem.setAttribute("role", "heading");
 		elem.setAttribute("aria-level", "2");
 	}
+	// The message editor is a contentEditable div.
+	// Slack does set the role, but to an invalid value of "textarea".
+	if (elem = document.querySelector(".ql-editor"))
+		elem.setAttribute("role", "textbox");
 }
 
 function onClassModified(target) {

Original file line number	Diff line number	Diff line change
`@@ -81,6 +81,10 @@ function onNodeAdded(target) {`
`81`	`81`	`elem.setAttribute("role", "heading");`
`82`	`82`	`elem.setAttribute("aria-level", "2");`
`83`	`83`	`}`
	`84`	`+ // The message editor is a contentEditable div.`
	`85`	`+ // Slack does set the role, but to an invalid value of "textarea".`
	`86`	`+ if (elem = document.querySelector(".ql-editor"))`
	`87`	`+ elem.setAttribute("role", "textbox");`
`84`	`88`	`}`
`85`	`89`
`86`	`90`	`function onClassModified(target) {`