We want the link that the user has clicked inside the TOC to be "active"
(e.g. bolded) regardless of whether the browser's scroll position
corresponds to that section. Therefore, we need to temporarily ignore
section observer until the browser has finished scrolling to the section
(if needed).
However, because the scroll event happens asyncronously after the user
clicks on a link and may not even happen at all (e.g. the user has
scrolled all the way to the bottom and clicks a section that is already
in the viewport), determining when we should resume section observer is
a bit tricky.
Because a scroll event may not even be triggered after clicking the
link, we instead allow the browser to perform a maximum number of
repaints before resuming sectionObserver. Per T297614#7687656, Firefox
wasn't consistently activating the table of contents section that the
user clicked even after waiting 2 frames. After further investigation,
it sometimes waits up to 3 frames before painting the new scroll
position so we have that as the limit.
Bug: T297614
Change-Id: If3632529f58c15348a7200258f4f5999ea0dadc4
- Make page title width fill container.
- Remove page title fadeout, replace with ellipsis.
- Prevent language button contents from wrapping.
Bug: T298885
Bug: T300036
Bug: T298887
Change-Id: I6b09f89ed89a9da7406cdf8b3a00698a9dd66d10
Given Wikidata is the only project using modern Vector,
and the only project where the search API is not applicable,
this will result in a loss of autocomplete on Wikidata.org
which will fall back to the non-JS mode.
Bug: T290688
Change-Id: Iece5a4efd43e09cd90c842c9c134ca115b35f2b2
Html::noticeBox doesn't output any deprecated classes so
will not conflict with any user gadgets now.
Bug: T299625
Change-Id: Ic9aef5c8ff3fae6a79c7cf82cc3c97714cf40b3d
This commits sets up the Table of Contents to bold the active section
when the section is scrolled.
Unfortunately, because our content does not have actual sections but
instead has a flat list of headings and paragraphs, we can't use
IntersectionObserver in the conventional way as it is optimized to find
intersections of elements that are *within* the viewport and the
callback will not reliably fire during certain scenarios (e.g. with fast
scrolling or when the headings are not currently within the viewport).
Furthermore, iterating through a list of elements and calling
`getBoundingClientRect()` can be expensive and can also cause
significant forced synchronous layouts that block the main thread.
The best compromise in terms of performance and function that I've found
is to use a combination of a throttled scroll event listener and
IntersectionObserver's ability to asyncronously find the
boundingClientRect of all elements off the main thread when `.observe`
is called which is the approach this patch takes. Although this is an
unorthodox way to use IntersectionObserver, performance profiles
recorded while holding the "down" arrow and scrolling for 10 seconds
with a 6x CPU throttle are comparable between master and this patch:
master: https://phabricator.wikimedia.org/F34930737
this patch: https://phabricator.wikimedia.org/F34930738
Bug: T297614
Change-Id: I4077d86a1786cc1f4a7d85b20b7cf402960940e7
Vector's tsc version is currently reporting errors that the latest
typescript version doesn't report and vice versa. Upgrade to the latest
version to avoid these discrepancies.
Additionally:
Fix tsc errors that are now reported by updated version
Bug: T297614
Change-Id: I0eb67bcc1a5ce214fcf2d6f6433a5de3a845b6a6
Waiting for one animation frame seems to make the sticky header
re-appear consistently.
Bug: T299114
Change-Id: Ie1230bf861f12e4e18a6adb0f6779c199d6954a1
Before Vue/WVUI lazy loads, we have intermediate search components that
are rendered on the server and that need to be styled based on the
`autoExpandWidth` prop passed to the search component. This commit
refactors VueEnhancedSearchBox to use this class if present.
Additionaly:
* Cleanup fixmes from Id8d3bd4aa74113b91ecaf66cb58cf5625db8a302
* Replace `vector-search-box-show-thumbnail` class with
`.vector-search-box-auto-expand-width` class in Header.less now that
the class has been cached in the HTML.
Depends-On: Ic914ecaee591008f987bd6d754fda8628125de7b
Bug: T297531
Change-Id: Ia6b7afa990fa4b04578740b483ba21dbef45a016
I haven't found any code responsible for making the scroll position
jump. It looks like Safari is doing this on its own. Looking at the
focus event in detail [1], it looks like there is an `preventScroll`
option you can pass to .focus() which might help in this situation, but
unfortunately, Safari doesn't seem to support this. Therfore, a hack
like this may be necessary.
[1] https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/focus
Bug: T297636
Change-Id: I90651293b7dd0f7f2970ba06255a12617b43661f
In preparation for I30c670e3f195f77a27715c6b494a3088b7a55712, refactor
the search component expand behavior so that it can accomodate the new
changes in WVUI while maintaining backwards compatibility with the
status quo.
Additionally, pass/enable the `auto-expand-width` prop to the main
header's search. This will be inert until the new changes in WVUI have
landed.
Bug: T297531
Change-Id: Id8d3bd4aa74113b91ecaf66cb58cf5625db8a302
Per T295085, because of the checkbox hack, these menu would stay open
when navigating back to a page.
Bug: T295085
Change-Id: Ief9523030384b4bcaa00379988e2042b4d177dcc
Follow up to 9dcfc1f
This simplifies the template by removing the need for the html-class.
The font-size can be provided to the entire content area meaning we don't
need the link-only class
Change-Id: Id5c49358f6ec007b3205ee390cf68334a1e56de5
Aligns the notifications produced by `mw.notify` so that they don't
obstruct the sticky header or usage of elements inside the sticky header.
Bug: T260338
Change-Id: If00f27ec19e71f6803231678fbb733ffaa6c6aaf
Follow up to 5dee570cb2.
It seems the mount works slightly different in that it creates a div,
appends by the App element to the element you give it, after
clearing all it's child nodes.
The previous behaviour was that the old element was /replaced/
by the App element.
Bug: T296889
Change-Id: Iee7493c032f4de5389207bba288a1a70e4cd14f3
Move A/B test code to AB.js
Consolidate the show/hide code spread across scrollObserver
and stickyHeader by adding a show and hide function.
This is needed to fix T296680
Change-Id: Ia2e0c50278df0dfc1600610f281be20f4cc755c2
- Permits logging for scroll events without sticky header.
- Update function name to be more precise.
Bug: T292586
Change-Id: I441b4bf81bc4a36a03f0f1c215d86b01dce2911d
Since a margin was added to adjacent sibling spans of icons (https://gerrit.wikimedia.org/r/c/mediawiki/core/+/736919), Vector icon buttons have had too much spacing. This patch removes the extra spacing defined in Vector CSS and the accidental whitespace that was included in the ULS buttons..
Change-Id: I308d1941c5f82cb144c2a9d233fbf44c730413a7
