void UpdateHeaderViews(IHierarchyNodeViewsHolder header, IHierarchyNodeModel model)
{
int prevDepth = model.Depth;
if (_HeaderFixedPadding)
{
model.Depth = 1;
}
header.UpdateViews(model);
if (_HeaderFixedPadding)
{
model.Depth = prevDepth;
}
}
bool ToggleDirectoryFoldoutInternal(int itemIndex, IHierarchyNodeViewsHolder vhIfVisible)
{
if (_BusyWithAnimation)
{
return(false);
}
var model = _Params.FlattenedVisibleHierarchy[itemIndex];
if (!model.IsDirectory())
{
return(false);
}
int nextIndex = itemIndex + 1;
bool wasExpanded = model.Expanded;
model.Expanded = !wasExpanded;
if (wasExpanded)
{
// Remove all following models with bigger depth, until a model with a less than- or equal depth is found
int i = itemIndex + 1;
int count = _Params.FlattenedVisibleHierarchy.Count;
for (; i < count;)
{
var m = _Params.FlattenedVisibleHierarchy[i];
if (m.Depth > model.Depth)
{
m.Expanded = false;
++i;
continue;
}
break; // found with depth less than- or equal to the collapsed item
}
int countToRemove = i - nextIndex;
if (countToRemove > 0)
{
if (_Params.animatedFoldOut)
{
GradualRemove(nextIndex, countToRemove);
}
else
{
_Params.FlattenedVisibleHierarchy.RemoveRange(nextIndex, countToRemove);
RemoveItems(nextIndex, countToRemove);
}
}
}
else
{
if (model.Children.Length > 0)
{
if (_Params.animatedFoldOut)
{
GradualAdd(nextIndex, model.Children);
}
else
{
_Params.FlattenedVisibleHierarchy.InsertRange(nextIndex, model.Children);
InsertItems(nextIndex, model.Children.Length);
}
}
}
// Starting with v4.0, only the newly visible items are updated to keep performance at max,
// so we need to update the directory viewsholder manually (most notably, its arrow will change)
//Debug.Log(model.expanded + ", " + vhIfVisible);
if (vhIfVisible != null)
{
vhIfVisible.UpdateViews(model);
}
return(true);
}