allow html elements (#4413)

Author: meganrogge

src/browser/AccessibleBuffer.ts

@@ -43,7 +43,7 @@ export class AccessibleBuffer extends Disposable {
     ));
     this.register(addDisposableDomListener(this._element, 'focus', () => this._refreshAccessibleBuffer()));
     this.register(addDisposableDomListener(this._element, 'focusout', (e) => {
-      if (!this._element.contains(e.element)) {
+      if (!this._element.contains(e.srcElement)) {
         this._isAccessibleBufferActive = false;
       }
     }));

src/browser/Types.d.ts

@@ -223,5 +223,5 @@ export interface IRenderDebouncerWithCallback extends IRenderDebouncer {
 }
 
 export interface IBufferElementProvider {
-  provideBufferElements(): DocumentFragment;
+  provideBufferElements(): DocumentFragment | HTMLElement;
 }

typings/xterm.d.ts

@@ -1370,9 +1370,9 @@ declare module 'xterm' {
 
   export interface IBufferElementProvider {
     /**
-     * Provides a document fragment containing the buffer elements.
+     * Provides a document fragment or HTMLElement containing the buffer elements.
      */
-    provideBufferElements(): DocumentFragment;
+    provideBufferElements(): DocumentFragment | HTMLElement;
   }
 
   /**