49 lines
1.9 KiB
Markdown
49 lines
1.9 KiB
Markdown
# Widget type templates
|
|
|
|
Before writing a new widget type, make sure to ask yourself if anyone is going
|
|
to need the feature. Only widget types that you (or an incapacitated friend
|
|
you can personally talk to) require would be merged. Do not file PRs because
|
|
they seem like a good idea. If they're really useful, they'll be requested
|
|
in the issue tracker.
|
|
|
|
Additionally, too simple widget types (e.g. an one-liner) and those that
|
|
are not modular enough are very unlikely to be merged. By *modular*, we mean
|
|
|
|
> constructed with standardized units or dimensions
|
|
> allowing flexibility and variety in use
|
|
|
|
If all the above conditions are met, you can start from one of the templates
|
|
in this directory:
|
|
|
|
* `sync.lua`: synchronous widget type that does not fork
|
|
* `async.lua`: asynchronous widget type for fetching informations using
|
|
a command-line utility. As a rule of thumb, if your widget type uses
|
|
`io.popen`, you would need to refactor it to use async facilities.
|
|
|
|
Your widget types should be placed in `widgets`: the `contrib` directory
|
|
exists only for historical reasons and is barely maintained anymore.
|
|
The filenames should be of the form `<name>_<platform>.lua`, whereas
|
|
|
|
* `<name>` is a single (alphanumeric) word, preferably in lowercase
|
|
* `<platform>` is the OS that the widget type works on.
|
|
At the time of writing these are supported:
|
|
- `freebsd`: FreeBSD
|
|
- `openbsd`: OpenBSD
|
|
- `bsd`: all \*BSDs listed above
|
|
- `linux`: GNU/Linux
|
|
- `all`: all of the above
|
|
|
|
Please be aware of `luacheck`, which may help you during the progress.
|
|
From `widgets`, run
|
|
|
|
luacheck --config .luacheckrc ..
|
|
|
|
After finishing the widget type, you should document its usage in the project's
|
|
`README.md`. Try to provide at least
|
|
|
|
* A brief description
|
|
* The list of supported platforms
|
|
* Type and structures of the arguments that the widget type passes
|
|
(`format` and `warg`), with unused parameters omitted
|
|
* Type and structure of the return value
|