May the ItemPositionedController extend the ScrollController

[wH1t3-l0tUs]

Problem description

When I try to use this Package inside the SlidingUpPanel, this Package aquire to implement the it's ScrollController inside the scrollable items had been added inside it (like ListVIew, SingleChildScrollView). This feature to make sure the scrolling will work as expected. But your package used a custom scroll controller, and I can use it inside SlidingUpPanel package.
Moreover, I can not get the maxScrollExtend like ScollController so it really hard to resolve my case

[jamesderlin]

I don't understand what you're asking or even which package you're talking about. This GitHub repository is home to multiple packages. (When you filed this issue, the issue template should have provided instructions about this.) Are you talking about scrollable_positioned_list or about linked_scroll_controller?

Would it be possible for you to provide a small but complete code sample that demonstrates the problem you're encountering?

[babaosoftware]

@jamesderlin I believe the problem is that the controller for scrollable_postioned_list is not derived from ScrollController, making it impossible to use the list in association with a Scrollbar that has alwaysOn, or with a popular thumb dragging scrollbar like draggable_scrollbar. My case is a List with variable height items, and I want to do two things: jump to an index, which scrollable_positioned_list enabled me to do, but also be able to drag, using a thumb.