This reverts commit 9407700a.

* Hide toolbar when selection is out of view

* properly dispose of toolbar visibility listener

* Add test

* rename toolbarvisibility

* Make visibility for toolbar nullable

* Properly dispose of toolbar visibility listener

* Merge visibility methods into one

* properly dispose of start selection view listener

* Add some docs

* remove unnecessary null check

* more docs

* Update dispose order
Co-authored-by: Renzo Olivares <roliv@google.com>

* Refactor TextSelectionOverlay

* fix test

* remove print

* fix more tests

* update

* added tests

* fix comments

* fmt

* fix test

* addressing comment

* remove dispose

* remove new line

* Unify Text selection API

* fix test

* further simplify

* fix more tests

* styling change

This reverts commit 63f48d1f.

This reverts commit c54ce015.

This reverts commit daef0825.

* copied over changes from

* copied over changes from