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fix(a11y): focus monitor not identifying touch focus inside shadow root #17167

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Merged
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Oct 3, 2019
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fix(a11y): focus monitor not identifying touch focus inside shadow root #17167

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6 changes: 5 additions & 1 deletion src/cdk/a11y/focus-monitor/focus-monitor.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -117,7 +117,11 @@ export class FocusMonitor implements OnDestroy {
if (this._touchTimeoutId != null) {
clearTimeout(this._touchTimeoutId);
}
this._lastTouchTarget = event.target;

// Since this listener is bound on the `document` level, any events coming from the shadow DOM
// will have their `target` set to the shadow root. If available, use `composedPath` to
// figure out the event target.
this._lastTouchTarget = event.composedPath ? event.composedPath()[0] : event.target;
this._touchTimeoutId = setTimeout(() => this._lastTouchTarget = null, TOUCH_BUFFER_MS);
}

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