Revert "Revert "Ignore pointer events from nested ListViews (#169680)" (

#171027)"

This reverts commit 6d25477.

src/vs/base/browser/ui/list/listWidget.ts

@@ -685,6 +685,10 @@ export class MouseController<T> implements IDisposable {
 			return;
 		}
 
+		if (e.browserEvent.defaultPrevented) {
+			return;
+		}
+
 		const focus = e.index;
 
 		if (typeof focus === 'undefined') {
@@ -709,6 +713,7 @@ export class MouseController<T> implements IDisposable {
 			this.list.setSelection([focus], e.browserEvent);
 		}
 
+		e.browserEvent.preventDefault();
 		this._onPointer.fire(e);
 	}
 
@@ -721,8 +726,13 @@ export class MouseController<T> implements IDisposable {
 			return;
 		}
 
+		if (e.browserEvent.defaultPrevented) {
+			return;
+		}
+
 		const focus = this.list.getFocus();
 		this.list.setSelection(focus, e.browserEvent);
+		e.browserEvent.preventDefault();
 	}
 
 	private changeSelection(e: IListMouseEvent<T> | IListTouchEvent<T>): void {

src/vs/base/browser/ui/tree/abstractTree.ts

@@ -1358,6 +1358,10 @@ class TreeNodeListMouseController<T, TFilterData, TRef> extends MouseController<
 			return;
 		}
 
+		if (e.browserEvent.defaultPrevented) {
+			return;
+		}
+
 		const node = e.element;
 
 		if (!node) {
@@ -1409,6 +1413,10 @@ class TreeNodeListMouseController<T, TFilterData, TRef> extends MouseController<
 			return;
 		}
 
+		if (e.browserEvent.defaultPrevented) {
+			return;
+		}
+
 		super.onDoubleClick(e);
 	}
 }