Merge "MediaHiearchyManager: prevent NPE in `updateTargetState()`" into tm-dev

     * Updates the bounds that the view wants to be in at the end of the animation.

     */

    private fun updateTargetState() {

        if (isCurrentlyInGuidedTransformation() && !isCurrentlyFading()) {

        var starthost = getHost(previousLocation)

        var endHost = getHost(desiredLocation)

        if (isCurrentlyInGuidedTransformation() && !isCurrentlyFading() && starthost != null &&

            endHost != null) {

            val progress = getTransformationProgress()

            var endHost = getHost(desiredLocation)!!

            var starthost = getHost(previousLocation)!!

            // If either of the hosts are invisible, let's keep them at the other host location to

            // have a nicer disappear animation. Otherwise the currentBounds of the state might

            // be undefined

            val newBounds = endHost.currentBounds

            val previousBounds = starthost.currentBounds

            targetBounds = interpolateBounds(previousBounds, newBounds, progress)

        } else {

            val bounds = getHost(desiredLocation)?.currentBounds ?: return

        } else if (endHost != null) {

            val bounds = endHost.currentBounds

            targetBounds.set(bounds)

        }

    }