@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
seekBar.setOnSeekArcChangeListener(presenter);
if (!isInEditMode()) presenter.takeView(this);
subscribeClicks();
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
unsubscribeClicks();
presenter.dropView(this);
seekBar.setOnSeekArcChangeListener(null);
destroyVisualizer();
}