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FilePreview.vue
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FilePreview.vue
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<template>
<div :style="canLoadPreview ? { backgroundImage: `url(${previewURL})`} : undefined"
:aria-label="t('Mime type {mime}', { mime: node.mime || t('unknown') })"
class="file-picker__file-icon">
<template v-if="!canLoadPreview">
<IconFile v-if="isFile" :size="20" />
<IconFolder v-else :size="20" />
</template>
</div>
</template>
<script setup lang="ts">
import { FileType, type Node } from '@nextcloud/files'
import { usePreviewURL } from '../../usables/preview'
import { computed, ref, toRef, watch } from 'vue'
import { t } from '../../utils/l10n'
import IconFile from 'vue-material-design-icons/File.vue'
import IconFolder from 'vue-material-design-icons/Folder.vue'
const props = defineProps<{
node: Node
}>()
const { previewURL } = usePreviewURL(toRef(props, 'node'))
const isFile = computed(() => props.node.type === FileType.File)
const canLoadPreview = ref(false)
watch(previewURL, () => {
canLoadPreview.value = false
if (previewURL.value) {
const loader = document.createElement('img')
loader.src = previewURL.value.href
loader.onerror = () => loader.remove()
loader.onload = () => { canLoadPreview.value = true; loader.remove() }
document.body.appendChild(loader)
}
}, { immediate: true })
</script>
<style scoped lang="scss">
.file-picker__file-icon {
width: 32px;
height: 32px;
min-width: 32px;
min-height: 32px;
background-repeat: no-repeat;
background-size: contain;
// for the fallback
display: flex;
justify-content: center;
}
</style>