* Remove unnecessary properties
* Use rem unit
* Add a drop shadow
* Make the "box shadow" slightly more subtle
* Use --d-border-radius
* Don't scale the "box shadow" on hover
* Scale down the on-hover size
* Make the button slightly larger
* Respect prefers-reduced-motion
* Use white rather than --secondary-or-primary
* Don't animate on-hover on mobile
If you upload a portrait video or just a video that doesn't fit in the
normal video dimensions we want it to have a black background instead of
trying to render parts of the placeholder image as the video background.
This change removes the placeholder image for the video background when
the play button is clicked and replaces it with an all black background.
The video placeholder play button is white, so on a video placeholder
that is also white it is very hard to see where the play button is, so
this change adds a dark grey transparent background to the play button
so that it stands out. This is similar to how we have done the
play/pause button on animated gifs.
This change will allow auto generated video thumbnails to be used
instead of the black video thumbnail that overlays videos.
Follow up to: 2443446e62bff9dd8a0493d10e5359a5e946a84e
post action feedback is the mechanism in which we provide visual feedback
to the user when a post action is clicked, in cases where the action is a
background (hidden to user) for example: copying text to the clipboard
Core uses this to share post links, but other plugins (for example: AI) use
this to share post transcripts via the clipboard.
This adds a proper plugin API to consume this functionality
`addPostMenuButton` can provide a builder that specified a function as the action.
This function will be called with an object that has both the current post and a method for showing feedback.
This new navbar component is used for every navbar in chat, full page or drawer, and any screen.
This commit also uses this opportunity to correctly decouple drawer-routes from full page routes. This will avoid having this kind of properties in components: `@includeHeader={{false}}`. The header is now defined in the parent template using a navbar. Each route has now its own template wrapped in a div of the name of the route, eg: `<div class="c-routes-threads">..</div>`.
The navbar API:
```gjs
<Navbar as |navbar|>
<navbar.BackButton />
<navbar.Title @title="Foo" />
<navbar.ChannelTitle @channel={{@channel}} />
<navbar.Actions as |action|>
<action.CloseThreadButton />
</navbar.Actions>
</navbar>
```
The full list of components is listed in `plugins/chat/assets/javascripts/discourse/components/navbar/index.gjs` and `plugins/chat/assets/javascripts/discourse/components/navbar/actions.gjs`.
Visually the header is not changing much, only in drawer mode the background has been removed.
This commit also introduces a `<List />` component to facilitate rendering lists in chat plugin.