/** Update the visible children on the state. */
private void updateVisibleChildren(
StackScrollState resultState, StackScrollAlgorithmState state) {
Log.d(TAG, "updateVisibleChildren: ");
ViewGroup hostView = resultState.getHostView();
int childCount = hostView.getChildCount();
state.visibleChildren.clear();
state.visibleChildren.ensureCapacity(childCount);
int notGoneIndex = 0;
for (int i = 0; i < childCount; i++) {
ExpandableView v = (ExpandableView) hostView.getChildAt(i);
if (v.getVisibility() != View.GONE) {
notGoneIndex = updateNotGoneIndex(resultState, state, notGoneIndex, v);
if (v instanceof ExpandableNotificationRow) {
ExpandableNotificationRow row = (ExpandableNotificationRow) v;
// handle the notgoneIndex for the children as well
List<ExpandableNotificationRow> children = row.getNotificationChildren();
if (row.areChildrenExpanded() && children != null) {
for (ExpandableNotificationRow childRow : children) {
if (childRow.getVisibility() != View.GONE) {
StackViewState childState = resultState.getViewStateForView(childRow);
childState.notGoneIndex = notGoneIndex;
notGoneIndex++;
}
}
}
}
}
}
}
