{"version":3,"file":"fixed-size-list.mjs","sources":["../../../../../../../packages/components/virtual-list/src/components/fixed-size-list.ts"],"sourcesContent":["import { isString, throwError } from '@element-plus/utils'\nimport buildList from '../builders/build-list'\nimport { isHorizontal } from '../utils'\nimport {\n AUTO_ALIGNMENT,\n CENTERED_ALIGNMENT,\n END_ALIGNMENT,\n SMART_ALIGNMENT,\n START_ALIGNMENT,\n} from '../defaults'\n\nimport type { VirtualizedListProps } from '../props'\n\ntype Props = VirtualizedListProps\n\nconst FixedSizeList = buildList({\n name: 'ElFixedSizeList',\n getItemOffset: ({ itemSize }, index) => index * (itemSize as number),\n\n getItemSize: ({ itemSize }) => itemSize as number,\n\n getEstimatedTotalSize: ({ total, itemSize }) => (itemSize as number) * total,\n\n getOffset: (\n { height, total, itemSize, layout, width },\n index,\n alignment,\n scrollOffset\n ) => {\n const size = (isHorizontal(layout) ? width : height) as number\n if (process.env.NODE_ENV !== 'production' && isString(size)) {\n throwError(\n '[ElVirtualList]',\n `\n You should set\n width/height\n to number when your layout is\n horizontal/vertical\n `\n )\n }\n const lastItemOffset = Math.max(0, total * (itemSize as number) - size)\n const maxOffset = Math.min(lastItemOffset, index * (itemSize as number))\n const minOffset = Math.max(0, (index + 1) * (itemSize as number) - size)\n\n if (alignment === SMART_ALIGNMENT) {\n if (\n scrollOffset >= minOffset - size &&\n scrollOffset <= maxOffset + size\n ) {\n alignment = AUTO_ALIGNMENT\n } else {\n alignment = CENTERED_ALIGNMENT\n }\n }\n\n switch (alignment) {\n case START_ALIGNMENT: {\n return maxOffset\n }\n case END_ALIGNMENT: {\n return minOffset\n }\n case CENTERED_ALIGNMENT: {\n // \"Centered\" offset is usually the average of the min and max.\n // But near the edges of the list, this doesn't hold true.\n const middleOffset = Math.round(minOffset + (maxOffset - minOffset) / 2)\n if (middleOffset < Math.ceil(size / 2)) {\n return 0 // near the beginning\n } else if (middleOffset > lastItemOffset + Math.floor(size / 2)) {\n return lastItemOffset // near the end\n } else {\n return middleOffset\n }\n }\n case AUTO_ALIGNMENT:\n default: {\n if (scrollOffset >= minOffset && scrollOffset <= maxOffset) {\n return scrollOffset\n } else if (scrollOffset < minOffset) {\n return minOffset\n } else {\n return maxOffset\n }\n }\n }\n },\n\n getStartIndexForOffset: ({ total, itemSize }, offset) =>\n Math.max(0, Math.min(total - 1, Math.floor(offset / (itemSize as number)))),\n\n getStopIndexForStartIndex: (\n { height, total, itemSize, layout, width }: Props,\n startIndex: number,\n scrollOffset: number\n ) => {\n const offset = startIndex * (itemSize as number)\n const size = isHorizontal(layout) ? width : height\n const numVisibleItems = Math.ceil(\n ((size as number) + scrollOffset - offset) / (itemSize as number)\n )\n return Math.max(\n 0,\n Math.min(\n total - 1,\n // because startIndex is inclusive, so in order to prevent array outbound indexing\n // we need to - 1 to prevent outbound behavior\n startIndex + numVisibleItems - 1\n )\n )\n },\n\n /**\n * Fixed size list does not need this cache\n * Using any to bypass it, TODO: Using type inference to fix this.\n */\n initCache() {\n return undefined as any\n },\n\n clearCache: true,\n\n validateProps() {\n //\n },\n})\n\nexport default FixedSizeList\n"],"names":["buildList"],"mappings":";;;;;;;AAUK,MAAC,aAAa,GAAGA,UAAS,CAAC;AAChC,EAAE,IAAI,EAAE,iBAAiB;AACzB,EAAE,aAAa,EAAE,CAAC,EAAE,QAAQ,EAAE,EAAE,KAAK,KAAK,KAAK,GAAG,QAAQ;AAC1D,EAAE,WAAW,EAAE,CAAC,EAAE,QAAQ,EAAE,KAAK,QAAQ;AACzC,EAAE,qBAAqB,EAAE,CAAC,EAAE,KAAK,EAAE,QAAQ,EAAE,KAAK,QAAQ,GAAG,KAAK;AAClE,EAAE,SAAS,EAAE,CAAC,EAAE,MAAM,EAAE,KAAK,EAAE,QAAQ,EAAE,MAAM,EAAE,KAAK,EAAE,EAAE,KAAK,EAAE,SAAS,EAAE,YAAY,KAAK;AAC7F,IAAI,MAAM,IAAI,GAAG,YAAY,CAAC,MAAM,CAAC,GAAG,KAAK,GAAG,MAAM,CAAC;AACvD,IAAI,IAAI,OAAO,CAAC,GAAG,CAAC,QAAQ,KAAK,YAAY,IAAI,QAAQ,CAAC,IAAI,CAAC,EAAE;AACjE,MAAM,UAAU,CAAC,iBAAiB,EAAE,CAAC;AACrC;AACA;AACA;AACA;AACA,MAAM,CAAC,CAAC,CAAC;AACT,KAAK;AACL,IAAI,MAAM,cAAc,GAAG,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,KAAK,GAAG,QAAQ,GAAG,IAAI,CAAC,CAAC;AAChE,IAAI,MAAM,SAAS,GAAG,IAAI,CAAC,GAAG,CAAC,cAAc,EAAE,KAAK,GAAG,QAAQ,CAAC,CAAC;AACjE,IAAI,MAAM,SAAS,GAAG,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,KAAK,GAAG,CAAC,IAAI,QAAQ,GAAG,IAAI,CAAC,CAAC;AACjE,IAAI,IAAI,SAAS,KAAK,eAAe,EAAE;AACvC,MAAM,IAAI,YAAY,IAAI,SAAS,GAAG,IAAI,IAAI,YAAY,IAAI,SAAS,GAAG,IAAI,EAAE;AAChF,QAAQ,SAAS,GAAG,cAAc,CAAC;AACnC,OAAO,MAAM;AACb,QAAQ,SAAS,GAAG,kBAAkB,CAAC;AACvC,OAAO;AACP,KAAK;AACL,IAAI,QAAQ,SAAS;AACrB,MAAM,KAAK,eAAe,EAAE;AAC5B,QAAQ,OAAO,SAAS,CAAC;AACzB,OAAO;AACP,MAAM,KAAK,aAAa,EAAE;AAC1B,QAAQ,OAAO,SAAS,CAAC;AACzB,OAAO;AACP,MAAM,KAAK,kBAAkB,EAAE;AAC/B,QAAQ,MAAM,YAAY,GAAG,IAAI,CAAC,KAAK,CAAC,SAAS,GAAG,CAAC,SAAS,GAAG,SAAS,IAAI,CAAC,CAAC,CAAC;AACjF,QAAQ,IAAI,YAAY,GAAG,IAAI,CAAC,IAAI,CAAC,IAAI,GAAG,CAAC,CAAC,EAAE;AAChD,UAAU,OAAO,CAAC,CAAC;AACnB,SAAS,MAAM,IAAI,YAAY,GAAG,cAAc,GAAG,IAAI,CAAC,KAAK,CAAC,IAAI,GAAG,CAAC,CAAC,EAAE;AACzE,UAAU,OAAO,cAAc,CAAC;AAChC,SAAS,MAAM;AACf,UAAU,OAAO,YAAY,CAAC;AAC9B,SAAS;AACT,OAAO;AACP,MAAM,KAAK,cAAc,CAAC;AAC1B,MAAM,SAAS;AACf,QAAQ,IAAI,YAAY,IAAI,SAAS,IAAI,YAAY,IAAI,SAAS,EAAE;AACpE,UAAU,OAAO,YAAY,CAAC;AAC9B,SAAS,MAAM,IAAI,YAAY,GAAG,SAAS,EAAE;AAC7C,UAAU,OAAO,SAAS,CAAC;AAC3B,SAAS,MAAM;AACf,UAAU,OAAO,SAAS,CAAC;AAC3B,SAAS;AACT,OAAO;AACP,KAAK;AACL,GAAG;AACH,EAAE,sBAAsB,EAAE,CAAC,EAAE,KAAK,EAAE,QAAQ,EAAE,EAAE,MAAM,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,GAAG,CAAC,KAAK,GAAG,CAAC,EAAE,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,QAAQ,CAAC,CAAC,CAAC;AAC1H,EAAE,yBAAyB,EAAE,CAAC,EAAE,MAAM,EAAE,KAAK,EAAE,QAAQ,EAAE,MAAM,EAAE,KAAK,EAAE,EAAE,UAAU,EAAE,YAAY,KAAK;AACvG,IAAI,MAAM,MAAM,GAAG,UAAU,GAAG,QAAQ,CAAC;AACzC,IAAI,MAAM,IAAI,GAAG,YAAY,CAAC,MAAM,CAAC,GAAG,KAAK,GAAG,MAAM,CAAC;AACvD,IAAI,MAAM,eAAe,GAAG,IAAI,CAAC,IAAI,CAAC,CAAC,IAAI,GAAG,YAAY,GAAG,MAAM,IAAI,QAAQ,CAAC,CAAC;AACjF,IAAI,OAAO,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,GAAG,CAAC,KAAK,GAAG,CAAC,EAAE,UAAU,GAAG,eAAe,GAAG,CAAC,CAAC,CAAC,CAAC;AAC9E,GAAG;AACH,EAAE,SAAS,GAAG;AACd,IAAI,OAAO,KAAK,CAAC,CAAC;AAClB,GAAG;AACH,EAAE,UAAU,EAAE,IAAI;AAClB,EAAE,aAAa,GAAG;AAClB,GAAG;AACH,CAAC;;;;"}
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