pinafore/routes/_components/compose/ComposeLengthIndicator.html
2018-08-26 12:14:16 -07:00

56 lines
1.6 KiB
HTML

<span class="compose-box-length {overLimit ? 'over-char-limit' : ''}"
aria-label={lengthLabel}>
{lengthToDisplayDeferred}
</span>
<style>
.compose-box-length {
grid-area: length;
justify-self: right;
color: var(--main-theme-color);
font-size: 1.3em;
align-self: center;
}
.compose-box-length.over-char-limit {
color: var(--warning-color);
}
</style>
<script>
import { mark, stop } from '../../_utils/marks'
import { store } from '../../_store/store'
import { scheduleIdleTask } from '../../_utils/scheduleIdleTask'
import { observe } from 'svelte-extras'
export default {
oncreate () {
let { lengthToDisplay } = this.get()
this.set({lengthToDisplayDeferred: lengthToDisplay})
// perf improvement for keyboard input latency
this.observe('lengthToDisplay', () => {
scheduleIdleTask(() => {
mark('set lengthToDisplayDeferred')
let { lengthToDisplay } = this.get()
this.set({lengthToDisplayDeferred: lengthToDisplay})
stop('set lengthToDisplayDeferred')
})
}, {init: false})
},
data: () => ({
lengthToDisplayDeferred: 0
}),
store: () => store,
computed: {
lengthToDisplay: ({ length, $maxStatusChars }) => $maxStatusChars - length,
lengthLabel: ({ overLimit, lengthToDisplayDeferred }) => {
if (overLimit) {
return `${lengthToDisplayDeferred} characters over limit`
} else {
return `${lengthToDisplayDeferred} characters remaining`
}
}
},
methods: {
observe
}
}
</script>