57 lines
		
	
	
		
			No EOL
		
	
	
		
			1.6 KiB
		
	
	
	
		
			HTML
		
	
	
	
	
	
			
		
		
	
	
			57 lines
		
	
	
		
			No EOL
		
	
	
		
			1.6 KiB
		
	
	
	
		
			HTML
		
	
	
	
	
	
<span class="compose-box-length {overLimit ? 'over-char-limit' : ''}"
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      aria-label={lengthLabel}>
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      {lengthToDisplayDeferred}
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    </span>
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<style>
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  .compose-box-length {
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    grid-area: length;
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    justify-self: right;
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    color: var(--main-theme-color);
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    font-size: 1.3em;
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    align-self: center;
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  }
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  .compose-box-length.over-char-limit {
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    color: var(--warning-color);
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  }
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</style>
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<script>
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  import { CHAR_LIMIT } from '../../_static/statuses'
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  import { mark, stop } from '../../_utils/marks'
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  import { store } from '../../_store/store'
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  import { scheduleIdleTask } from '../../_utils/scheduleIdleTask'
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  import { observe } from 'svelte-extras'
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  export default {
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    oncreate () {
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      let { lengthToDisplay } = this.get()
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      this.set({lengthToDisplayDeferred: lengthToDisplay})
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      // perf improvement for keyboard input latency
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      this.observe('lengthToDisplay', () => {
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        scheduleIdleTask(() => {
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          mark('set lengthToDisplayDeferred')
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          let { lengthToDisplay } = this.get()
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          this.set({lengthToDisplayDeferred: lengthToDisplay})
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          stop('set lengthToDisplayDeferred')
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        })
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      }, {init: false})
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    },
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    data: () => ({
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      lengthToDisplayDeferred: 0
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    }),
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    store: () => store,
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    computed: {
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      lengthToDisplay: ({ length }) => CHAR_LIMIT - length,
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      lengthLabel: ({ overLimit, lengthToDisplayDeferred }) => {
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        if (overLimit) {
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          return `${lengthToDisplayDeferred} characters over limit`
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        } else {
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          return `${lengthToDisplayDeferred} characters remaining`
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        }
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      }
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    },
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    methods: {
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      observe
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    }
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  }
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</script> |