Components

Progress

Indeterminate

Vue

<script setup lang="ts">
import { Progress } from "opui-css/vue"
</script>

<template>
  <Progress aria-busy="true" />
</template>

Output

<div class="ui-progress">
  <progress><!--[--><!--]--></progress>
</div>

Determinate

Vue

<script setup lang="ts">
import { onMounted } from "vue"
import { Progress } from "opui-css/vue"

onMounted(() => {
  const progress = document.querySelector("#determinate-progress")
  if (progress) {
    setInterval(() => {
      if (progress.value >= 100) {
        progress.value = 10
      } else {
        progress.value += 10
      }
    }, 3000)
  }
})
</script>

<template>
  <Progress id="determinate-progress" max="100" value="10" />
</template>

Output

<div class="ui-progress">
  <progress id="determinate-progress" max="100" value="10">
    <!--[--><!--]-->
  </progress>
</div>

Variants

Use the variant prop to swap the progress bar track surface for better contrast on different backgrounds.

Vue

<script setup lang="ts">
import { Progress } from "opui-css/vue"
</script>

<template>
  <Progress value="25" max="100" variant="default" />
  <Progress value="50" max="100" variant="filled" />
  <Progress value="75" max="100" variant="tonal" />
</template>

Output

<!--[-->
<div class="ui-progress ui-default">
  <progress max="100" value="25"><!--[--><!--]--></progress>
</div>
<div class="ui-progress ui-filled">
  <progress max="100" value="50"><!--[--><!--]--></progress>
</div>
<div class="ui-progress ui-tonal">
  <progress max="100" value="75"><!--[--><!--]--></progress>
</div>
<!--]-->

Accessibility

If the <progress> element is describing the loading progress of a section of a page:

use aria-describedby to point to the status
set aria-busy="true" on the section that is being updated, removing it when loading is finished.

Source: MDN

Content here is loading.

API

Prop	Type	Default	Description
`value`	`number \| string`	-	The current value of the progress bar.
`max`	`number \| string`	-	The maximum value of the progress bar.
`aria-busy`	`"true" \| "false" \| boolean`	-	Indicates that the element or its content is being modified.
`aria-label`	`string`	-	Accessible label for the progress bar.
`variant`	`'filled' \| 'default' \| 'tonal'`	`'default'`	Adjusts the progress bar background color for better contrast on different surfaces.

Installation

progress.css

@layer components.root {
  :where(.ui-progress) {
    --_motion: var(--motion, 1);
    --_accent-color: var(--primary);
    --_bg-color: var(--surface-tonal);

    background-color: var(--_bg-color);
    block-size: var(--size-1);
    border-radius: var(--border-radius, 0.25rem);
    display: inline-block;
    inline-size: 100%;
    overflow: hidden;
    position: relative;
    vertical-align: baseline;

    /* Color */
    &.ui-filled {
      --_bg-color: var(--surface-filled);
    }

    &.ui-default {
      --_bg-color: var(--surface-default);
    }

    &.ui-tonal {
      --_bg-color: var(--surface-tonal);
    }

    & > progress {
      appearance: none;
      background: none;
      block-size: 100%;
      border: 0;
      display: block;
      inline-size: 100%;

      &::-webkit-progress-bar {
        background: none;
        border-radius: var(--border-radius, 0.25rem);
      }

      &[value]::-webkit-progress-value {
        background-color: var(--_accent-color);
        transition: inline-size calc(0.2s * var(--_motion))
          var(--ease-out-4, cubic-bezier(0, 0, 0.1, 1));
      }

      &::-moz-progress-bar {
        background-color: var(--_accent-color);
      }
    }
  }

  :where(.ui-progress):has(> progress:indeterminate) {
    &::after {
      animation: indeterminate calc(2s * var(--motion, 1)) linear infinite;
      background-color: var(--_accent-color);
      content: "";
      inset: 0 auto 0 0;
      position: absolute;
      will-change: inset-inline-start, inset-inline-end;
    }

    & > progress {
      &::-webkit-progress-value {
        background-color: transparent;
      }

      &::-moz-progress-bar {
        background-color: transparent;
      }
    }
  }

  [dir="rtl"] {
    :where(.ui-progress):has(> progress:indeterminate) {
      &::after {
        animation-direction: reverse;
      }
    }
  }

  @keyframes indeterminate {
    0% {
      inset-inline-start: -200%;
      inset-inline-end: 100%;
    }

    60% {
      inset-inline-start: 107%;
      inset-inline-end: -8%;
    }

    100% {
      inset-inline-start: 107%;
      inset-inline-end: -8%;
    }
  }
}