We have changed our all instances of list_render to use
simplebar and thus, we will now use simplebar container
to track scroll event for all the lists created by
list_render.
This fixes the bug of new subscribers not rendering on
scrolling at the end of subscriber list in stream settings
and similar bug in some other lists also.
This commit also removes scroll_util.get_list_scrolling_container
function as this is no longer used.
Fixes#15637.
We wrap the [reset] anchor tag in a button so that we can set 'disabled'
attribute on it. We change the styles to hide the [reset] button and the
pencil icon when the widget is disabled.
We also need to call `e.preventDefault()` in the event handler since now
the anchor tag behaves as a button.
Previously, we tried to read the value from page_params, which was just
a hack to make the calling code look cleaner. We now remove that hack
and thus, our dependency on page_params existing. Now, if the caller
does not specify a default value, we'll use the null-value.
This also creates a new init() function to cleanly wrap the code that
makes changes to the opts passed to the widget.