volume-control asks the player whether there is a volume of ours to
control, and renders nothing when there is not. The decision is in the
control rather than at either mount point because there are two, and
one of them -- the bottom bar's -- lives in index.html, which has no
module scope to make it conditional.
It could not have been a width, and that is the whole design decision.
Every other stand-down rule in this app is keyed on a viewport, because
a width is what a browser can answer and what every tier can test.
This one is a property of the build: keyed on width, an Android tablet
at 600px or more draws the bar's slider over a level the backend has
pinned -- a control that cannot act, on exactly the platform the rule
exists for, which library-status-indicator settled is worse than none.
The same rule is wrong the other way below 600px, where a narrow
desktop window has no hardware keys to fall back on. index.css keeps
its phone rule, which is now about room and says so.
Rendering nothing and hiding the host are both needed and are separate
assertions: an empty shadow root is what stops a by-role or positional
query finding a button that cannot act, and :host([hidden]) is what
stops the element taking a flex item's worth of the transport. The
host rule has to be written down, since :host { display: inline-flex }
outranks the UA's [hidden].
Measured at 424x439 by flipping the constant and rebuilding: the album
art goes 39px to 68px and the transport 172px to 143px -- 29px, being
the 21px control plus the 8px gap a hidden box stops drawing. The
bar's centring is unaffected, since #23's outer columns are the same
min() expression rather than content-sized.
volume-ownership.test.ts is the tier that can exercise the Android
rendering, on an ordinary Linux runner, because the predicate is a
stubbable backend answer. Both of its tests were confirmed to fail on
the build before this.
Closes #64
Closes #172
YellowJacket Frontend
This directory contains the frontend for YellowJacket.
Dependencies
There are a couple of tools that are required to build and use the frontend.
vitefor- transpiling typescript
- bundling the final "package" that is useb by the webview
- running a dev server with hot-reloading
- configured with the
vite.config.tsfile in this directory
pnpmfor managing frontend dependency packages
There are a handful of dependency packages that we use directly in the frontend.
picocssfor basic CSS while developinglitfor a simple but powerful wrapper around Web Components
Lastly, there are some dependencies that only benefit development
tsservercomes bundled with vscode and can be used as an LSP with other editors usingtypescript-language-server- Used for autocomplete, syntax highlighting, etc.
- This can be configured with the
tsconfig.jsonfile in the root of the project- NOTE: your configuration should align with the
viteconfig so you get in-editor feedback that aligns with how the build will be done.
- NOTE: your configuration should align with the
Development
Ideally, you would use the frontend in the wails app as the frontend depends on the Go bindings generated by Wails.
You can do this by running wails dev in the root of the YellowJacket repo.
If you want to run the frontend standalone, make sure the Wails go bindings have been generated with wails generate modules.
Then, you can run pnpm dev to run the vite dev server.
For more information on what commands are available, refer to package.json.
Code
Web Components
Our frontend is based off of Web Components, a standard that provides native browser encapsulation of components that can include HTML, CSS and Javascript all together.
Instead of writing these components manually in Javascript, we utilize lit as a wrapper library.
Typescript
To better integrate with our tooling and to provide a better developer experience with strong typing, we have written all functional frontend code in Typescript. Vite serves as our Typescript transpiler.
Important Files and Directories
NOTE: most of these directories have aliases defined in tsconfig.json and vite.config.ts so that we may refer to them by shorthand when importing.
index.htmlandindex.jsis the entrypoint for the frontend. The first page that loads.wailsjs/goGo code bindings generated by wails reside herewailsjs/runtimethe Wails runtime code needed to use Wails featuressrcall app code resides heresrc/assetsstatic assets like fonts, images and iconssrc/componentslit components that are used to compose the applicationsrc/pagespages that serve as other entrypoints for the application that can be navigated to