Scroll Area

<script setup lang="ts">
defineProps<{
  orientation?: 'vertical' | 'horizontal'
  virtualize?: boolean
  lanes?: number
  gap?: number
  padding?: number
}>()

const items = Array.from({ length: 50 }, (_, i) => ({
  id: i + 1,
  title: `Item ${i + 1}`,
  description: `Description for item ${i + 1}`
}))
</script>

<template>
  <UScrollArea
    :items="items"
    :orientation="orientation"
    :virtualize="virtualize ? {
      lanes: lanes && lanes > 1 ? lanes : undefined,
      gap,
      paddingStart: padding,
      paddingEnd: padding
    } : false"
    class="h-96 w-full border border-default rounded-lg"
  >
    <template #default="{ item }">
      <UCard class="h-full overflow-hidden">
        <template #header>
          <h3 class="font-semibold">
            {{ item.title }}
          </h3>
        </template>
        <p class="text-sm text-muted">
          {{ item.description }}
        </p>
      </UCard>
    </template>
  </UScrollArea>
</template>

<script setup lang="ts">
defineProps<{
  orientation?: 'vertical' | 'horizontal'
}>()

const items = Array.from({ length: 30 }, (_, i) => ({
  id: i + 1,
  title: `Item ${i + 1}`,
  description: `Description for item ${i + 1}`
}))
</script>

<template>
  <UScrollArea
    :items="items"
    :orientation="orientation"
    :class="orientation === 'vertical' ? 'h-96 flex flex-col' : 'w-full'"
    class="border border-default rounded-lg p-4"
    :ui="{ viewport: 'p-0' }"
  >
    <template #default="{ item }">
      <UCard>
        <template #header>
          <h3 class="font-semibold">
            {{ item.title }}
          </h3>
        </template>
        <p class="text-sm text-muted">
          {{ item.description }}
        </p>
      </UCard>
    </template>
  </UScrollArea>
</template>

<script setup lang="ts">
const props = defineProps<{
  itemCount?: number
}>()

const items = computed(() => Array.from({ length: props.itemCount || 10000 }, (_, i) => ({
  id: i + 1,
  title: `Item ${i + 1}`,
  description: `Description for item ${i + 1}`
})))
</script>

<template>
  <UScrollArea
    :items="items"
    virtualize
    class="h-96 w-full border border-default rounded-lg p-4"
  >
    <template #default="{ item }">
      <UCard class="mb-4">
        <template #header>
          <h3 class="font-semibold">
            {{ item.title }}
          </h3>
        </template>
        <p class="text-sm text-muted">
          {{ item.description }}
        </p>
      </UCard>
    </template>
  </UScrollArea>
</template>

<script setup lang="ts">
const items = Array.from({ length: 100 }, (_, i) => ({
  id: i + 1,
  title: `Card ${i + 1}`,
  description: i % 3 === 0
    ? `This is a longer description with more text to demonstrate variable height handling in virtualized lists. Item ${i + 1} has significantly more content than others.`
    : `Short description for item ${i + 1}.`
}))
</script>

<template>
  <UScrollArea
    :items="items"
    :virtualize="{ estimateSize: 120, lanes: 3, gap: 12, paddingStart: 12, paddingEnd: 12 }"
    class="h-96 w-full border border-default rounded-lg"
  >
    <template #default="{ item }">
      <UCard>
        <template #header>
          <h3 class="font-semibold">
            {{ item.title }}
          </h3>
        </template>
        <p class="text-sm text-muted">
          {{ item.description }}
        </p>
      </UCard>
    </template>
  </UScrollArea>
</template>

<template>
  <UScrollArea class="h-64 border border-default rounded-lg p-4">
    <div class="space-y-4">
      <UCard>
        <template #header>
          <h3 class="font-semibold">
            Section 1
          </h3>
        </template>
        <p>Custom content without using the items prop.</p>
      </UCard>
      <UCard>
        <template #header>
          <h3 class="font-semibold">
            Section 2
          </h3>
        </template>
        <p>Any content can be placed here and it will be scrollable.</p>
      </UCard>
      <UCard>
        <template #header>
          <h3 class="font-semibold">
            Section 3
          </h3>
        </template>
        <p>You can mix different components and layouts as needed.</p>
      </UCard>
    </div>
  </UScrollArea>
</template>

<script setup lang="ts">
const props = defineProps<{
  targetIndex?: number
  itemCount?: number
}>()

const items = computed(() => Array.from({ length: props.itemCount || 1000 }, (_, i) => ({
  id: i + 1,
  title: `Item ${i + 1}`
})))

const scrollArea = useTemplateRef('scrollArea')

function scrollToTop() {
  scrollArea.value?.scrollToIndex(0, { align: 'start', behavior: 'smooth' })
}

function scrollToBottom() {
  scrollArea.value?.scrollToIndex(items.value.length - 1, { align: 'end', behavior: 'smooth' })
}

function scrollToItem(index: number) {
  scrollArea.value?.scrollToIndex(index - 1, { align: 'center', behavior: 'smooth' })
}
</script>

<template>
  <div class="space-y-4 w-full">
    <UScrollArea
      ref="scrollArea"
      :items="items"
      :virtualize="{ estimateSize: 58 }"
      class="h-96 w-full border border-default rounded-lg p-4"
    >
      <template #default="{ item, index }">
        <div
          class="p-3 mb-2 rounded-lg border border-default"
          :class="index === (targetIndex || 500) - 1 ? 'bg-primary-500/10 border-primary-500/20' : 'bg-elevated'"
        >
          <span class="font-medium">{{ item.title }}</span>
        </div>
      </template>
    </UScrollArea>

    <div class="flex items-center gap-2">
      <UButton icon="i-lucide-arrow-up-to-line" size="sm" @click="scrollToTop">
        Top
      </UButton>
      <UButton icon="i-lucide-arrow-down-to-line" size="sm" @click="scrollToBottom">
        Bottom
      </UButton>
      <UButton icon="i-lucide-navigation" size="sm" @click="scrollToItem(targetIndex || 500)">
        Go to {{ targetIndex || 500 }}
      </UButton>
    </div>
  </div>
</template>