Why this change?
When setting up the `IntersectionObserver`, we did not account for the
top margin and padding causing no intersection event to fire when the
last tag is load into view. This commits fixes the problem by setting a
bottom margin using the `rootMargin` option when setting up the
`IntersectionObserver`.
This commit also improves the test coverage surrounding the loading of
more tags.
What is the problem?
Before this change, we were relying on the `/tags` endpoint which
returned all the tags that are visible to a give user on the site leading to potential performance problems.
The attribute keys of the response also changes based on the `tags_listed_by_group` site setting.
What is the fix?
This commit fixes the problems listed above by creating a dedicate `#list` action in the
`TagsController` to handle the listing of the tags in the edit
navigation menu tags modal. This is because the `TagsController#index`
action was created specifically for the `/tags` route and the response
body does not really map well to what we need. The `TagsController#list`
action added here is also much safer since the response is paginated and
we avoid loading a whole bunch of tags upfront.
Why this change?
A new component based API for modals was introduced in
b3a23bd9d6. This commit moves the edit
navigation menu tags and categories modal to the new API.
Why this change?
We want the position of the filters to remain fixed when scrolling
through the list of categories or tags. Otherwise, the user has to
scroll all the way back to othe top in order to access the filters when
the list of categories or tags is large.
What does this change do?
This change adds a dropdown filter that allows a user to filter by
selected or unselected categories/tags in the edit navigation menu
modal.
For the categories modal, parent categories that do not match the
dropdown filter will be displayed as disabled since those parent
categories need to be displayed to maintain the hieracy of the child
child categories.
Why this change?
There was alot of duplication between the edit navigation menu tags/categories modal which
was making it hard to introduce new changes as the work had to be
duplicated into multiple places.
This commit mainly extracts the duplicated code into common components
such that it is easier to make styling changes across both modals.
