Patrick H. Lauke [Sat, 11 Jul 2020 20:38:43 +0000 (21:38 +0100)]
Docs: forms accessibility cleanup (#31114)
* Expand on disabled fieldsets and faked buttons
include further advice/information on how to disable faked buttons for keyboard/AT users
* Centralise accessible name advice in forms overview
seems odd to only mention (separately) label, aria-label etc in input-group and layout. the advice is just as pertinent in other sections like select. checks only skims over this.
moving this, in expanded form, into the overview section itself. adding a specific cross-reference (just because they are easily left with no accname at all) in the checks page.
* Change warning about accessibility, modify server-side example
- paradoxically, due to our current problems with validation (see #28414) and the fact that browsers seem to have improved in this area for the most part, it's now actually better to use browser-native validation
- added explicit `id` and `aria-describedby` association to at least the server-side form error messages, to show how it should be done properly, and expanded the prose for that explaining this.
* Replace `.sr-only` with `.visually-hidden` in new addition
* Copy edits for clarity in parenthetical
* Copy and formatting tweaks
- Wordsmithing here and there
- Turns some hyphens into em dashes
- Turns a long running comma separated list into an unordered list
- Rearranges some copy just a bit
Mark Otto [Mon, 15 Jun 2020 07:25:05 +0000 (00:25 -0700)]
Add null variables for nav-link
Replaces #30498 by adding four new null default variables for .nav-link. Doesn't carry over font-style from the original PR though since that's rarely used, at least by default Bootstrap. Nullifies all values from that PR, too, since we count on some basic inheritance here and don't need color by default.
Patrick H. Lauke [Sun, 21 Jun 2020 11:07:20 +0000 (12:07 +0100)]
Docs: rename "Screen readers" helper page to "Visually hidden"
"screen readers" is quite reductive, as there are other assistive technologies. content hidden this way is even announced by things like Alexa/Siri etc, so it's not so much just "screen readers".
in the long run, we may even consider changing the actual classnames (maybe `.visually-hidden` / `.visually-hidden-focusable`, though admittedly that's a bit verbose).
also includes a tiny tweak to layout.md to generalise the note about using `.sr-only`
Docs: separate button group out of checks/radios, expand button groups page (#31201)
* Keep checks/radio toggle buttons on topic
- give examples of the pure toggle checks and radios, without the button group class. show that these work fine without `.btn-group`, but still cross-reference it
- move the explanation from "Checkbox toggle buttons" directly to "Toggle buttons", as the mention of using button classes applies equally to the subsequent "Radio toggle buttons" and "Outlined styles" subsections.
* Expand button group description
as it's not just single line, but vertical as well
* Expand button group examples
- add more colour ... `.btn-secondary` is just dull and uninspiring
- new section to showcase "Checkbox and radio button groups"
- add a mixed styles example
- add an example of vertical radio button group
To be more representative of the fact that these are not necessarily "screen reader" specific, but actually apply to assistive technologies in general (and also things like Alexa/Siri/etc). Goes hand-in-hand with #31133
- since we're not doing the disabled cursor thing anymore anyway, remove confusing/unnecessary mention for link-based disabled buttons
- make the disabled toggle example using a link actually follow the preceding advice of also having `tabindex="-1"` and `aria-disabled="true"`
- tweak the link functionality callout to also still mention `aria-disabled` to reinforce the idea
- tweak toggle state description (not just `<button>`s, but also links etc...so just remove mention of `<button>` there; also reinforce accessibility aspect once more)
- add a new callout that cross-references checkbox-based toggles, and what the similarity/difference between them is
- add a matching cross-reference callout to the checkbox-based toggle buttons page
Patrick H. Lauke [Sat, 27 Jun 2020 18:31:59 +0000 (19:31 +0100)]
Docs: rename form checks page to "Checks / radios" (#31090)
* Docs: rename form checks page to "Checks / radios"
it's not immediately obvious that "checks" includes information about both checkboxes and radio buttons. while "checks / radios" is also still not perfect (as honestly even I didn't quite grok that "checks" meant checkboxes), it should make it slightly more obvious nonetheless
Patrick H. Lauke [Sun, 21 Jun 2020 12:33:07 +0000 (13:33 +0100)]
Docs: move color utility callouts to start of page (#31135)
* Move color utility callouts to start of page
Hierarchically/structurally, in the position they are currently at, the two callouts seem like they "belong" just to the "background color" section. Moving them to the start makes it clearer that those two callouts relate to everything in the page (both "Color" and "Background color" classes.
* Change heading level
otherwise the assistive technology callout looks like it's hierarchically under the "Dealing with specificity" heading
Mark Otto [Thu, 18 Jun 2020 17:27:42 +0000 (10:27 -0700)]
Add new toasts examples (#30572)
* Add two new toasts examples
- Adds a new custom content example that removes the toast header and adds a custom close icon
- Adds docs for how to create your own color schemes
- Adds example of additional buttons
* Update toasts examples
- Remove span and place aria on SVG element
- Add .border-0 to color scheme example for crisper edges
Patrick H. Lauke [Wed, 17 Jun 2020 17:48:31 +0000 (18:48 +0100)]
Docs: tweak accessibility section
- point to WCAG 2.1 rather than 2.0
- soften/expand the language around color contrast, since the situation has definitely improved in v5 but we still can't guarantee all possible permutations of colors/opacities/etc
- minor language/stylistic tweaks
- add further resources
Patrick H. Lauke [Wed, 17 Jun 2020 12:28:35 +0000 (13:28 +0100)]
Docs: fix old/broken example capture and typo (#31070)
* Docs: fix old/broken example capture and typo
* Make example less broken-looking
don't want to give impression that now it's ok to just sprinkle `role="button"` around. this at least makes the `span` keyboard-focusable, similar to at least the start of a custom control