Merge "Fix an NPE in onTopologyChanged" into main

        dragEventListeners.remove(dragEventListener)

    }

    override fun onTopologyChanged(topology: DisplayTopology) {

    override fun onTopologyChanged(topology: DisplayTopology?) {

        // TODO: b/383069173 - Cancel window drag when topology changes happen during drag.

        displayIds.clear()

        if (topology == null) return

        val displayBounds = topology.getAbsoluteBounds()

        displayIds.addAll(List(displayBounds.size()) { displayBounds.keyAt(it) })

    }