textarea in iframe keybinding issue.

extensions/git-extended/preview-src/index.ts

@@ -104,6 +104,12 @@ function updateCheckoutButton(isCheckedOut: boolean) {
 
 function setTextArea() {
 	(<HTMLTextAreaElement>document.getElementById('commentTextArea')!).placeholder = 'Leave a comment';
+	(<HTMLTextAreaElement>document.getElementById('commentTextArea')!).addEventListener('keydown', e => {
+		console.log(e);
+		if (e.keyCode === 65 && e.metaKey) {
+			(<HTMLTextAreaElement>document.getElementById('commentTextArea')!).select();
+		}
+	});
 	(<HTMLButtonElement>document.getElementById('reply-button')!).textContent = 'Comment';
 	(<HTMLButtonElement>document.getElementById('close-button')!).textContent = 'Close pull request';
 }
\ No newline at end of file

src/vs/editor/browser/controller/coreCommands.ts

@@ -1711,7 +1711,7 @@ registerCommand(new EditorOrNativeTextInputCommand({
 	editorHandler: CoreNavigationCommands.SelectAll,
 	inputHandler: 'selectAll',
 	id: 'editor.action.selectAll',
-	precondition: null,
+	precondition: EditorContextKeys.focus,
 	kbOpts: {
 		weight: CORE_WEIGHT,
 		kbExpr: null,