This uses the sticky header's `.mw-sticky-header-element` utility class
to conditionally offset the table of contents to the height of the
sticky header only when the sticky header is enabled.
Bug: T300077
Change-Id: Ibad97a11e708ba19acf27ca82320f7c3e5f80447
Collapses sub-sections in the new table of contents by default
(except for non-js and reduced-motion users) and expands the
sections when the top-level section link has been clicked.
Refactors the `activateSection` TableOfContents methods into separate
`activateSection` and `deactivateSection` functions.
Adds `expandSection` and `collapseSection` methods.
Adds triangle icon as a visual expand/collapsed indicator
next to all ToC section headings and are hidden via CSS based on
whether or not the section contains subsections.
Adds test for tableOfContents.
Bug: T299361
Change-Id: I36b3ae7f9f633877683bc17a9444c970d7fa7293
Given that these styles deal with the layout of the sidebar button in
the main header and don't make sense in any other context (at least
currently), I think they belong in Header.less.
Change-Id: I191b9a404c82c5a1a80f97d98fa54535fdd53944
- 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
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
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
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
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
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
- Add edit icons.
- Update data passed to sticky header, button templates.
- Show/hide edit icons client-side based on ids in fixed header.
- Disable sticky header when in Visual Editor mode.
- Use Visual Editor hooks to toggle IntersectionObserver.
- Remove extraneous js for setting offsets for other sticky elements (simplify by moving known sticky element th to css - follow up to https://gerrit.wikimedia.org/r/c/mediawiki/skins/Vector/+/722475/comment/7b8ab2db_cd5c7e78/).
Bug: T289723
Change-Id: Ifbab2f1c4d716f8fc261e3d7fa35fc71c6065ec5
When the sticky header is visible, it has a global impact on the
scrolling UX. For example, it can undesirably overlap elements when the
user clicks on a jump link and when the user tabs through elements in
reverse order. Therefore, we need to add scroll padding to the root
element when the sticky header is enabled (when the feature flag is on
and at higher resolutions)
Known limitations:
* Scroll padding is supported by all the latest modern browsers except
for Safari [1]. This was considered an acceptable tradeoff with the
caveat that this decision may be revisited in the future as we learn
more about user interaction with the sticky header.
[1] https://caniuse.com/mdn-css_properties_scroll-padding-top
Bug: T290518
Change-Id: Ie5eb01d7eafd18ce740be620dfb5c8849386af6e
Styling should not depend on IDs to allow us to have multiple
searches in the page.
Precursor for wiring up search in the sticky header.
This also tweaks performance metrics to track separate metrics
for the sticky header search
Change-Id: I5b4192a8f5a9f95af26c1faf904f7cc994323518
- Fixes blank sticky header language button when no languages are present
- Adds arrow to sticky header language button
Bug: T289815
Change-Id: I36dc5fb0aad9c3ca1fced0d46e5167e8707f6731
Per T289724#7342741, server renders an anchor tag pointing to #p-search
into the "button-start" bucket of the sticky header.
In the future after T289718, this anchor will then acts as a button when
the search module is loaded and searchToggle executes.
* skins.vector.search was modified to accomodate instantiating multiple
search components (one in the main header and one in the sticky
header).
* searchToggle.js was modified to accept a searchToggle element as a
param which the caller can then instantiate when ideal. For the sticky
header toggle, this needs to happen *after* the search module loads.
Before then, the toggle will act as a link.
* Drops one jQuery usage from searchToggle so that it can be jQuery
free. Because the native .closest method is used, IE11 support is also
dropped. However, the script feature detects and returns early if the
API isn't available.
* Makes App.vue accept an `id` prop so that multiple instances of it can
be created.
Bug: T289724
Change-Id: I1c5e6eee75918a0d06562d07c31fdcbd5a4ed6d5
We have many styles related to the layout and visibility of search that
are only useful in the context of the main header. Since many of these
elements have classes that will also be in the sticky header, we should
scope these rules to the main header so that we avoid an uphill battle
of styles trying to override eachother.
Additional changes:
* We previously had a mix of #p-search and .vector-search-box selectors
for the same element in the CSS. Header.less now only uses
.vector-searchbox to avoid specificity wars.
* Removed nearly all of the #p-search rules previously found on L147 -
L167 in screen.less after observing nothing relatively bad happening
when they were removed.
Bug: T289724
Change-Id: I2e6c269e29717cd20d8acfaddc3631ea1b8fedfa
- Show sticky header after bottom of first h1.
- Hide sticky header before bottom of first h1.
- Add media query for reduce motion preference.
Bug: T290101
Change-Id: I2b1ecd31ac360a1ef5bf2f016978d6e0665a316c
