AUI-3206 append container as we expand tree item

[NemethNorbert]

Hey,

AUI-3206,
LPS-140686 - LPS to commit the solution to liferay

The tree view was not able to expand if we loaded the items as collapsed after https://issues.liferay.com/browse/AUI-3205
Please review my change.

Thanks,

[georgel-pop-lr]

Hey,

AUI-3206, LPS-140686 - LPS to commit the solution to liferay

The tree view was not able to expand if we loaded the items as collapsed after https://issues.liferay.com/browse/AUI-3205 Please review my change.

Thanks,

I have tested this and seems LGTM from my point of view.

[NemethNorbert]

Hey, can someone provide an update on this PR?

Thanks,

[markocikos]

@NemethNorbert See a minor tweak inline.

This 'load more' behavior of setting container as internal value, but not appending and expanding immediately, is quite weird. I am not sure if it is intended behavior or a bug. But, I quite like the idea of not expanding and rendering nodes immediately. If we are already hitting 'load more', we are dealing with a lot of pages. I know some customers have tens of thousands of pages. So, if it's a bug, the bug gets 👍 from me 😄

[markocikos]

Could we add a check if the node is already appended? Something like

if (nodeContainer && !boundingBox.contains(nodeContainer)) {

That way we would revert to standard component behavior of show/hide after the first append.