pinafore/routes/_components/compose/ComposeLengthIndicator.html

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<span class="compose-box-length {{$rawComposeTextOverLimit ? 'over-char-limit' : ''}}"
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aria-label="{{inputLengthLabel}}">
{{inputLengthToDisplayAfterRaf || '0'}}
</span>
<style>
.compose-box-length {
grid-area: length;
justify-self: right;
color: var(--main-theme-color);
font-size: 1.3em;
align-self: center;
}
.compose-box-length.over-char-limit {
color: var(--warning-color);
}
</style>
<script>
import { CHAR_LIMIT } from '../../_static/statuses'
import { mark, stop } from '../../_utils/marks'
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import { store } from '../../_store/store'
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export default {
oncreate() {
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// perf improvement for keyboard input latency
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this.observe('inputLengthToDisplay', inputLengthToDisplay => {
requestAnimationFrame(() => {
mark('set inputLengthToDisplayAfterRaf')
this.set({inputLengthToDisplayAfterRaf: inputLengthToDisplay})
stop('set inputLengthToDisplayAfterRaf')
})
})
},
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store: () => store,
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computed: {
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inputLengthToDisplay: ($rawComposeTextLength) => {
return ($rawComposeTextLength <= CHAR_LIMIT
? $rawComposeTextLength
: CHAR_LIMIT - $rawComposeTextLength)
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},
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inputLengthLabel: ($rawComposeTextOverLimit, inputLengthToDisplay) => {
if ($rawComposeTextOverLimit) {
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return `${inputLengthToDisplay} characters over limit`
} else {
return `${inputLengthToDisplay} characters`
}
}
}
}
</script>