Migrate to Turborepo (#1251)

packages/ui/src/components/base/DropArea.vue

@@ -0,0 +1,98 @@
+<template>
+  <Teleport to="body">
+    <div
+      ref="dropAreaRef"
+      class="drop-area"
+      @drop.stop.prevent="handleDrop"
+      @dragenter.prevent="allowDrag"
+      @dragover.prevent="allowDrag"
+      @dragleave.prevent="hideDropArea"
+    />
+  </Teleport>
+  <slot />
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+
+const props = withDefaults(
+  defineProps<{
+    accept: string
+  }>(),
+  {
+    accept: '*',
+  }
+)
+
+const emit = defineEmits(['change'])
+
+const dropAreaRef = ref<HTMLDivElement>()
+const fileAllowed = ref(false)
+
+const hideDropArea = () => {
+  if (dropAreaRef.value) {
+    dropAreaRef.value.style.visibility = 'hidden'
+  }
+}
+
+const handleDrop = (event: DragEvent) => {
+  hideDropArea()
+  if (event.dataTransfer && event.dataTransfer.files && fileAllowed.value) {
+    emit('change', event.dataTransfer.files)
+  }
+}
+
+const allowDrag = (event: DragEvent) => {
+  const file = event.dataTransfer?.items[0]
+  if (
+    file &&
+    props.accept
+      .split(',')
+      .reduce((acc, t) => acc || file.type.startsWith(t) || file.type === t || t === '*', false)
+  ) {
+    fileAllowed.value = true
+    event.dataTransfer.dropEffect = 'copy'
+    event.preventDefault()
+    if (dropAreaRef.value) {
+      dropAreaRef.value.style.visibility = 'visible'
+    }
+  } else {
+    fileAllowed.value = false
+    hideDropArea()
+  }
+}
+
+onMounted(() => {
+  document.addEventListener('dragenter', allowDrag)
+})
+</script>
+
+<style lang="scss" scoped>
+.drop-area {
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  z-index: 10;
+  visibility: hidden;
+  background-color: hsla(0, 0%, 0%, 0.5);
+  transition: visibility 0.2s ease-in-out, background-color 0.1s ease-in-out;
+  display: flex;
+  &::before {
+    --indent: 4rem;
+    content: ' ';
+    position: relative;
+    top: var(--indent);
+    left: var(--indent);
+    width: calc(100% - (2 * var(--indent)));
+    height: calc(100% - (2 * var(--indent)));
+    border-radius: 1rem;
+    border: 0.25rem dashed var(--color-button-bg);
+  }
+
+  @media (prefers-reduced-motion) {
+    transition: none !important;
+  }
+}
+</style>