Expand comment reply area on focus

src/vs/workbench/parts/comments/electron-browser/commentThreadWidget.ts

@@ -473,17 +473,20 @@ export class ReviewZoneWidget extends ZoneWidget {
 		this._headingLabel.setAttribute('aria-label', label);
 	}
 
+	private expandReplyArea() {
+		if (!dom.hasClass(this._commentForm, 'expand')) {
+			dom.addClass(this._commentForm, 'expand');
+			this._commentEditor.focus();
+		}
+	}
+
 	private createReplyButton() {
 		this._reviewThreadReplyButton = <HTMLButtonElement>dom.append(this._commentForm, dom.$('button.review-thread-reply-button'));
 		this._reviewThreadReplyButton.title = nls.localize('reply', "Reply...");
 		this._reviewThreadReplyButton.textContent = nls.localize('reply', "Reply...");
 		// bind click/escape actions for reviewThreadReplyButton and textArea
-		this._reviewThreadReplyButton.onclick = () => {
-			if (!dom.hasClass(this._commentForm, 'expand')) {
-				dom.addClass(this._commentForm, 'expand');
-				this._commentEditor.focus();
-			}
-		};
+		this._localToDispose.push(dom.addDisposableListener(this._reviewThreadReplyButton, 'click', _ => this.expandReplyArea()));
+		this._localToDispose.push(dom.addDisposableListener(this._reviewThreadReplyButton, 'focus', _ => this.expandReplyArea()));
 
 		this._commentEditor.onDidBlurEditorWidget(() => {
 			if (this._commentEditor.getModel().getValueLength() === 0 && dom.hasClass(this._commentForm, 'expand')) {