> Please review a change to simplify the implementation of CSS themes by solely 
> relying on an attribute set by script instead of the dual script plus media 
> queries approach. This allows us to get rid of duplicate declaration of CSS 
> theme variables. On the downside, JavaScript must be enabled to recognize the 
> system theme, but this is an acceptable compromise as documentation remains 
> fully usable with JavaScript disabled. This change also makes it much easier 
> for users to override or extend JavaDoc stylesheets. 
> 
> Also included is a fix for the keyboard tab order of the theme switcher. When 
> opening the theme switcher and hitting the tab key, focus now goes to the 
> theme switcher and no longer goes to the first link in the breadcrumb 
> navigation if there is one. This required moving the HTML for the theme 
> switcher next to the theme button, which required a whole series of test 
> changes. I considered removing the theme switcher markup from these tests, 
> but decided against it, mostly to make sure there are no other unchecked 
> links in the navigation bar. This fix also required reducing the `z-index` of 
> the mobile table of contents.
> 
> Another improvement related to focus handling is to close the theme switcher 
> when it loses focus, and when the `Enter` or `Escape` keys are pressed. Also 
> included is a small change to slightly reduce the padding of the recently 
> introduced TOC sort button. 
> 
> Sample documentation [can be viewed 
> here](https://cr.openjdk.org/~hannesw/8370612/api.00/java.base/module-summary.html).

Hannes Wallnöfer has updated the pull request incrementally with one additional 
commit since the last revision:

  Fix sizing bugs in mobile TOC introduced with dark theme

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/28085/files
  - new: https://git.openjdk.org/jdk/pull/28085/files/aafcf7db..750e5f9a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28085&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28085&range=04-05

  Stats: 7 lines in 2 files changed: 1 ins; 3 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/28085.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28085/head:pull/28085

PR: https://git.openjdk.org/jdk/pull/28085

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