{"version":3,"file":"SelectItemAlignedPosition.cjs","sources":["../../src/Select/SelectItemAlignedPosition.vue"],"sourcesContent":["<script lang=\"ts\">\nimport type { Ref } from 'vue'\nimport type { PrimitiveProps } from '@/Primitive'\nimport { useResizeObserver } from '@vueuse/core'\nimport { useCollection } from '@/Collection'\nimport { clamp, createContext, useForwardExpose } from '@/shared'\n\ninterface SelectItemAlignedPositionContext {\n  contentWrapper?: Ref<HTMLElement | undefined>\n  shouldExpandOnScrollRef?: Ref<boolean>\n  onScrollButtonChange: (node: HTMLElement | undefined) => void\n}\n\nexport interface SelectItemAlignedPositionProps extends PrimitiveProps {}\n\nexport const [injectSelectItemAlignedPositionContext, provideSelectItemAlignedPositionContext]\n  = createContext<SelectItemAlignedPositionContext>('SelectItemAlignedPosition')\n</script>\n\n<script setup lang=\"ts\">\nimport { nextTick, onMounted, ref } from 'vue'\nimport { Primitive } from '@/Primitive'\nimport { injectSelectContentContext } from './SelectContentImpl.vue'\nimport { injectSelectRootContext } from './SelectRoot.vue'\nimport { CONTENT_MARGIN } from './utils'\n\ndefineOptions({\n  inheritAttrs: false,\n})\n\nconst props = defineProps<SelectItemAlignedPositionProps>()\nconst emits = defineEmits<{\n  placed: []\n}>()\n\nconst { getItems } = useCollection()\nconst rootContext = injectSelectRootContext()\nconst contentContext = injectSelectContentContext()\n\nconst shouldExpandOnScrollRef = ref(false)\nconst shouldRepositionRef = ref(true)\n\nconst contentWrapperElement = ref<HTMLElement>()\nconst { forwardRef, currentElement: contentElement } = useForwardExpose()\n\nconst { viewport, selectedItem, selectedItemText, focusSelectedItem }\n  = contentContext!\n\nfunction position() {\n  if (\n    rootContext.triggerElement.value\n    && rootContext.valueElement.value\n    && contentWrapperElement.value\n    && contentElement.value\n    && viewport?.value\n    && selectedItem?.value\n    && selectedItemText?.value\n  ) {\n    const triggerRect = rootContext.triggerElement.value.getBoundingClientRect()\n\n    // -----------------------------------------------------------------------------------------\n    //  Horizontal positioning\n    // -----------------------------------------------------------------------------------------\n    const contentRect = contentElement.value.getBoundingClientRect()\n    const valueNodeRect = rootContext.valueElement.value.getBoundingClientRect()\n    const itemTextRect = selectedItemText.value.getBoundingClientRect()\n\n    if (rootContext.dir.value !== 'rtl') {\n      const itemTextOffset = itemTextRect.left - contentRect.left\n      const left = valueNodeRect.left - itemTextOffset\n      const leftDelta = triggerRect.left - left\n      const minContentWidth = triggerRect.width + leftDelta\n      const contentWidth = Math.max(minContentWidth, contentRect.width)\n      const rightEdge = window.innerWidth - CONTENT_MARGIN\n      const clampedLeft = clamp(left, CONTENT_MARGIN, Math.max(CONTENT_MARGIN, rightEdge - contentWidth))\n\n      contentWrapperElement.value.style.minWidth = `${minContentWidth}px`\n      contentWrapperElement.value.style.left = `${clampedLeft}px`\n    }\n    else {\n      const itemTextOffset = contentRect.right - itemTextRect.right\n      const right = window.innerWidth - valueNodeRect.right - itemTextOffset\n      const rightDelta = window.innerWidth - triggerRect.right - right\n      const minContentWidth = triggerRect.width + rightDelta\n      const contentWidth = Math.max(minContentWidth, contentRect.width)\n      const leftEdge = window.innerWidth - CONTENT_MARGIN\n      const clampedRight = clamp(\n        right,\n        CONTENT_MARGIN,\n        Math.max(CONTENT_MARGIN, leftEdge - contentWidth),\n      )\n\n      contentWrapperElement.value.style.minWidth = `${minContentWidth}px`\n      contentWrapperElement.value.style.right = `${clampedRight}px`\n    }\n\n    // -----------------------------------------------------------------------------------------\n    // Vertical positioning\n    // -----------------------------------------------------------------------------------------\n    const items = getItems().map(i => i.ref)\n    const availableHeight = window.innerHeight - CONTENT_MARGIN * 2\n    const itemsHeight = viewport.value.scrollHeight\n\n    const contentStyles = window.getComputedStyle(contentElement.value)\n    const contentBorderTopWidth = Number.parseInt(\n      contentStyles.borderTopWidth,\n      10,\n    )\n    const contentPaddingTop = Number.parseInt(contentStyles.paddingTop, 10)\n    const contentBorderBottomWidth = Number.parseInt(\n      contentStyles.borderBottomWidth,\n      10,\n    )\n    const contentPaddingBottom = Number.parseInt(\n      contentStyles.paddingBottom,\n      10,\n    )\n\n    const fullContentHeight = contentBorderTopWidth + contentPaddingTop + itemsHeight + contentPaddingBottom + contentBorderBottomWidth\n    const minContentHeight = Math.min(\n      selectedItem.value.offsetHeight * 5,\n      fullContentHeight,\n    )\n\n    const viewportStyles = window.getComputedStyle(viewport.value)\n    const viewportPaddingTop = Number.parseInt(viewportStyles.paddingTop, 10)\n    const viewportPaddingBottom = Number.parseInt(\n      viewportStyles.paddingBottom,\n      10,\n    )\n\n    const topEdgeToTriggerMiddle\n      = triggerRect.top + triggerRect.height / 2 - CONTENT_MARGIN\n    const triggerMiddleToBottomEdge = availableHeight - topEdgeToTriggerMiddle\n\n    const selectedItemHalfHeight = selectedItem.value.offsetHeight / 2\n    const itemOffsetMiddle\n      = selectedItem.value.offsetTop + selectedItemHalfHeight\n    const contentTopToItemMiddle\n      = contentBorderTopWidth + contentPaddingTop + itemOffsetMiddle\n    const itemMiddleToContentBottom\n      = fullContentHeight - contentTopToItemMiddle\n\n    const willAlignWithoutTopOverflow\n      = contentTopToItemMiddle <= topEdgeToTriggerMiddle\n\n    if (willAlignWithoutTopOverflow) {\n      const isLastItem = selectedItem.value === items[items.length - 1]\n      contentWrapperElement.value.style.bottom = `${0}px`\n      const viewportOffsetBottom\n        = contentElement.value.clientHeight\n          - viewport.value.offsetTop\n          - viewport.value.offsetHeight\n      const clampedTriggerMiddleToBottomEdge = Math.max(\n        triggerMiddleToBottomEdge,\n        selectedItemHalfHeight\n        // viewport might have padding bottom, include it to avoid a scrollable viewport\n        + (isLastItem ? viewportPaddingBottom : 0)\n        + viewportOffsetBottom\n        + contentBorderBottomWidth,\n      )\n      const height = contentTopToItemMiddle + clampedTriggerMiddleToBottomEdge\n      contentWrapperElement.value.style.height = `${height}px`\n    }\n    else {\n      const isFirstItem = selectedItem.value === items[0]\n      contentWrapperElement.value.style.top = `${0}px`\n      const clampedTopEdgeToTriggerMiddle = Math.max(\n        topEdgeToTriggerMiddle,\n        contentBorderTopWidth\n        + viewport.value.offsetTop\n        // viewport might have padding top, include it to avoid a scrollable viewport\n        + (isFirstItem ? viewportPaddingTop : 0)\n        + selectedItemHalfHeight,\n      )\n      const height = clampedTopEdgeToTriggerMiddle + itemMiddleToContentBottom\n      contentWrapperElement.value.style.height = `${height}px`\n      viewport.value.scrollTop\n        = contentTopToItemMiddle\n          - topEdgeToTriggerMiddle\n          + viewport.value.offsetTop\n    }\n\n    contentWrapperElement.value.style.margin = `${CONTENT_MARGIN}px 0`\n    contentWrapperElement.value.style.minHeight = `${minContentHeight}px`\n    contentWrapperElement.value.style.maxHeight = `${availableHeight}px`\n    // -----------------------------------------------------------------------------------------\n\n    emits('placed')\n\n    // we don't want the initial scroll position adjustment to trigger \"expand on scroll\"\n    // so we explicitly turn it on only after they've registered.\n    requestAnimationFrame(() => (shouldExpandOnScrollRef.value = true))\n  }\n}\n\n// copy z-index from content to wrapper\nconst contentZIndex = ref('')\n\nonMounted(async () => {\n  await nextTick()\n  position()\n  if (contentElement.value)\n    contentZIndex.value = window.getComputedStyle(contentElement.value).zIndex\n})\n\n// When the viewport becomes scrollable at the top, the scroll up button will mount.\n// Because it is part of the normal flow, it will push down the viewport, thus throwing our\n// trigger => selectedItem alignment off by the amount the viewport was pushed down.\n// We wait for this to happen and then re-run the positining logic one more time to account for it.\nfunction handleScrollButtonChange(node: HTMLElement | undefined) {\n  if (node && shouldRepositionRef.value === true) {\n    position()\n    focusSelectedItem?.()\n    shouldRepositionRef.value = false\n  }\n}\n\n// Resize and position when trigger element changes\nuseResizeObserver(rootContext.triggerElement, () => {\n  position()\n})\n\nprovideSelectItemAlignedPositionContext({\n  contentWrapper: contentWrapperElement,\n  shouldExpandOnScrollRef,\n  onScrollButtonChange: handleScrollButtonChange,\n})\n</script>\n\n<template>\n  <div\n    ref=\"contentWrapperElement\"\n    :style=\"{\n      display: 'flex',\n      flexDirection: 'column',\n      position: 'fixed',\n      zIndex: contentZIndex,\n    }\"\n  >\n    <Primitive\n      :ref=\"forwardRef\"\n      :style=\"{\n        // When we get the height of the content, it includes borders. If we were to set\n        // the height without having `boxSizing: 'border-box'` it would be too big.\n        boxSizing: 'border-box',\n        // We need to ensure the content doesn't get taller than the wrapper\n        maxHeight: '100%',\n      }\"\n      v-bind=\"{ ...$attrs, ...props }\"\n    >\n      <slot />\n    </Primitive>\n  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