ov-switch

src/ov-switch.js

LIFTED FROM demo/switch.html

Attributes

Properties

READ-ONLY PROPERTIES

armed, report, set

Events

Using it

import 'overscan'
import 'overscan/overscan.css'

<ov-switch
  src="../demo/models/switch-unknown.json"
  label="MRL"
  positions="REL,OFF,LAT"
  transit="8"
></ov-switch>

import { OvSwitch } from 'overscan/react'

<OvSwitch
  src="../demo/models/switch-unknown.json"
  label="MRL"
  positions="REL,OFF,LAT"
  transit="8"
  reading={data}
  talkback={data}
  onArm={handler}
  onCommand={handler}
  onSafe={handler}
/>

import { OvSwitch } from 'overscan/vue'

<OvSwitch
  src="../demo/models/switch-unknown.json"
  label="MRL"
  positions="REL,OFF,LAT"
  transit="8"
  :reading="data"
  :talkback="data"
  @arm="handler"
  @command="handler"
  @safe="handler"
/>

import OvSwitch from 'overscan/svelte/OvSwitch.svelte'

<OvSwitch
  src="../demo/models/switch-unknown.json"
  label="MRL"
  positions="REL,OFF,LAT"
  transit="8"
  reading={data}
  talkback={data}
  onarm={handler}
  oncommand={handler}
  onsafe={handler}
/>

The CSS is a separate import in every framework. A single element can be imported on its own instead of the whole kit: import 'overscan/src/ov-chart.js'

A reading is set as a PROPERTY, never an attribute. An attribute is a string, so an array cannot survive one and a null arrives as the word "null", which the protocol would read as a value rather than a dropout.

Every ov: event is bound with addEventListener. The colon has no declarative spelling in Svelte 5, where the on: directive is gone and "onov:commit" is not an identifier, nor in JSX. Vue can bind it.

The wrapper applies attributes ITSELF and hands the framework nothing but a ref. All three frameworks set a prop as a property when the name exists on the element, and this kit has 72 getter-only properties across 39 elements. Assigning one throws, and in React it does not degrade: the whole tree fails to render. 13 elements have a getter-only name that is also a real attribute (at, bearing, digits, duration, floor, fov, fresh, hold, lat, lon, period, pitch, range, ring, rings, span, step, sweep, sweeps, traces, value), which are the ones a reader would naturally pass in markup.