import { defineComponent, getCurrentInstance, ref, computed, unref, nextTick, onMounted, h, resolveDynamicComponent } from 'vue';
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import '../../../../utils/index.mjs';
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import '../../../../hooks/index.mjs';
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import ScrollBar from '../components/scrollbar.mjs';
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import { useGridWheel } from '../hooks/use-grid-wheel.mjs';
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import { useCache } from '../hooks/use-cache.mjs';
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import { virtualizedGridProps } from '../props.mjs';
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import { isRTL, getRTLOffsetType, getScrollDir } from '../utils.mjs';
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import { ITEM_RENDER_EVT, SCROLL_EVT, FORWARD, BACKWARD, RTL_OFFSET_POS_DESC, RTL_OFFSET_NAG, AUTO_ALIGNMENT, RTL, RTL_OFFSET_POS_ASC } from '../defaults.mjs';
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import { useNamespace } from '../../../../hooks/use-namespace/index.mjs';
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import { isNumber } from '../../../../utils/types.mjs';
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import { getScrollBarWidth } from '../../../../utils/dom/scroll.mjs';
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import { hasOwn, isString } from '@vue/shared';
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import { isClient } from '@vueuse/core';
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const createGrid = ({
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name,
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clearCache,
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getColumnPosition,
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getColumnStartIndexForOffset,
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getColumnStopIndexForStartIndex,
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getEstimatedTotalHeight,
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getEstimatedTotalWidth,
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getColumnOffset,
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getRowOffset,
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getRowPosition,
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getRowStartIndexForOffset,
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getRowStopIndexForStartIndex,
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initCache,
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injectToInstance,
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validateProps
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}) => {
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return defineComponent({
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name: name != null ? name : "ElVirtualList",
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props: virtualizedGridProps,
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emits: [ITEM_RENDER_EVT, SCROLL_EVT],
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setup(props, { emit, expose, slots }) {
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const ns = useNamespace("vl");
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validateProps(props);
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const instance = getCurrentInstance();
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const cache = ref(initCache(props, instance));
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injectToInstance == null ? void 0 : injectToInstance(instance, cache);
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const windowRef = ref();
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const hScrollbar = ref();
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const vScrollbar = ref();
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const innerRef = ref(null);
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const states = ref({
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isScrolling: false,
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scrollLeft: isNumber(props.initScrollLeft) ? props.initScrollLeft : 0,
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scrollTop: isNumber(props.initScrollTop) ? props.initScrollTop : 0,
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updateRequested: false,
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xAxisScrollDir: FORWARD,
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yAxisScrollDir: FORWARD
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});
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const getItemStyleCache = useCache();
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const parsedHeight = computed(() => Number.parseInt(`${props.height}`, 10));
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const parsedWidth = computed(() => Number.parseInt(`${props.width}`, 10));
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const columnsToRender = computed(() => {
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const { totalColumn, totalRow, columnCache } = props;
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const { isScrolling, xAxisScrollDir, scrollLeft } = unref(states);
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if (totalColumn === 0 || totalRow === 0) {
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return [0, 0, 0, 0];
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}
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const startIndex = getColumnStartIndexForOffset(props, scrollLeft, unref(cache));
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const stopIndex = getColumnStopIndexForStartIndex(props, startIndex, scrollLeft, unref(cache));
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const cacheBackward = !isScrolling || xAxisScrollDir === BACKWARD ? Math.max(1, columnCache) : 1;
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const cacheForward = !isScrolling || xAxisScrollDir === FORWARD ? Math.max(1, columnCache) : 1;
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return [
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Math.max(0, startIndex - cacheBackward),
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Math.max(0, Math.min(totalColumn - 1, stopIndex + cacheForward)),
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startIndex,
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stopIndex
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];
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});
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const rowsToRender = computed(() => {
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const { totalColumn, totalRow, rowCache } = props;
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const { isScrolling, yAxisScrollDir, scrollTop } = unref(states);
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if (totalColumn === 0 || totalRow === 0) {
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return [0, 0, 0, 0];
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}
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const startIndex = getRowStartIndexForOffset(props, scrollTop, unref(cache));
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const stopIndex = getRowStopIndexForStartIndex(props, startIndex, scrollTop, unref(cache));
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const cacheBackward = !isScrolling || yAxisScrollDir === BACKWARD ? Math.max(1, rowCache) : 1;
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const cacheForward = !isScrolling || yAxisScrollDir === FORWARD ? Math.max(1, rowCache) : 1;
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return [
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Math.max(0, startIndex - cacheBackward),
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Math.max(0, Math.min(totalRow - 1, stopIndex + cacheForward)),
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startIndex,
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stopIndex
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];
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});
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const estimatedTotalHeight = computed(() => getEstimatedTotalHeight(props, unref(cache)));
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const estimatedTotalWidth = computed(() => getEstimatedTotalWidth(props, unref(cache)));
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const windowStyle = computed(() => {
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var _a;
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return [
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{
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position: "relative",
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overflow: "hidden",
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WebkitOverflowScrolling: "touch",
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willChange: "transform"
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},
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{
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direction: props.direction,
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height: isNumber(props.height) ? `${props.height}px` : props.height,
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width: isNumber(props.width) ? `${props.width}px` : props.width
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},
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(_a = props.style) != null ? _a : {}
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];
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});
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const innerStyle = computed(() => {
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const width = `${unref(estimatedTotalWidth)}px`;
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const height = `${unref(estimatedTotalHeight)}px`;
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return {
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height,
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pointerEvents: unref(states).isScrolling ? "none" : void 0,
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width
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};
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});
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const emitEvents = () => {
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const { totalColumn, totalRow } = props;
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if (totalColumn > 0 && totalRow > 0) {
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const [
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columnCacheStart,
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columnCacheEnd,
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columnVisibleStart,
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columnVisibleEnd
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] = unref(columnsToRender);
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const [rowCacheStart, rowCacheEnd, rowVisibleStart, rowVisibleEnd] = unref(rowsToRender);
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emit(ITEM_RENDER_EVT, {
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columnCacheStart,
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columnCacheEnd,
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rowCacheStart,
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rowCacheEnd,
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columnVisibleStart,
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columnVisibleEnd,
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rowVisibleStart,
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rowVisibleEnd
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});
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}
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const {
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scrollLeft,
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scrollTop,
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updateRequested,
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xAxisScrollDir,
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yAxisScrollDir
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} = unref(states);
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emit(SCROLL_EVT, {
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xAxisScrollDir,
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scrollLeft,
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yAxisScrollDir,
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scrollTop,
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updateRequested
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});
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};
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const onScroll = (e) => {
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const {
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clientHeight,
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clientWidth,
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scrollHeight,
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scrollLeft,
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scrollTop,
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scrollWidth
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} = e.currentTarget;
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const _states = unref(states);
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if (_states.scrollTop === scrollTop && _states.scrollLeft === scrollLeft) {
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return;
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}
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let _scrollLeft = scrollLeft;
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if (isRTL(props.direction)) {
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switch (getRTLOffsetType()) {
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case RTL_OFFSET_NAG:
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_scrollLeft = -scrollLeft;
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break;
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case RTL_OFFSET_POS_DESC:
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_scrollLeft = scrollWidth - clientWidth - scrollLeft;
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break;
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}
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}
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states.value = {
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..._states,
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isScrolling: true,
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scrollLeft: _scrollLeft,
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scrollTop: Math.max(0, Math.min(scrollTop, scrollHeight - clientHeight)),
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updateRequested: true,
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xAxisScrollDir: getScrollDir(_states.scrollLeft, _scrollLeft),
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yAxisScrollDir: getScrollDir(_states.scrollTop, scrollTop)
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};
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nextTick(() => resetIsScrolling());
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onUpdated();
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emitEvents();
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};
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const onVerticalScroll = (distance, totalSteps) => {
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const height = unref(parsedHeight);
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const offset = (estimatedTotalHeight.value - height) / totalSteps * distance;
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scrollTo({
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scrollTop: Math.min(estimatedTotalHeight.value - height, offset)
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});
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};
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const onHorizontalScroll = (distance, totalSteps) => {
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const width = unref(parsedWidth);
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const offset = (estimatedTotalWidth.value - width) / totalSteps * distance;
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scrollTo({
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scrollLeft: Math.min(estimatedTotalWidth.value - width, offset)
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});
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};
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const { onWheel } = useGridWheel({
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atXStartEdge: computed(() => states.value.scrollLeft <= 0),
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atXEndEdge: computed(() => states.value.scrollLeft >= estimatedTotalWidth.value - unref(parsedWidth)),
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atYStartEdge: computed(() => states.value.scrollTop <= 0),
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atYEndEdge: computed(() => states.value.scrollTop >= estimatedTotalHeight.value - unref(parsedHeight))
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}, (x, y) => {
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var _a, _b, _c, _d;
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(_b = (_a = hScrollbar.value) == null ? void 0 : _a.onMouseUp) == null ? void 0 : _b.call(_a);
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(_d = (_c = hScrollbar.value) == null ? void 0 : _c.onMouseUp) == null ? void 0 : _d.call(_c);
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const width = unref(parsedWidth);
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const height = unref(parsedHeight);
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scrollTo({
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scrollLeft: Math.min(states.value.scrollLeft + x, estimatedTotalWidth.value - width),
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scrollTop: Math.min(states.value.scrollTop + y, estimatedTotalHeight.value - height)
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});
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});
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const scrollTo = ({
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scrollLeft = states.value.scrollLeft,
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scrollTop = states.value.scrollTop
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}) => {
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scrollLeft = Math.max(scrollLeft, 0);
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scrollTop = Math.max(scrollTop, 0);
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const _states = unref(states);
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if (scrollTop === _states.scrollTop && scrollLeft === _states.scrollLeft) {
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return;
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}
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states.value = {
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..._states,
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xAxisScrollDir: getScrollDir(_states.scrollLeft, scrollLeft),
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yAxisScrollDir: getScrollDir(_states.scrollTop, scrollTop),
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scrollLeft,
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scrollTop,
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updateRequested: true
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};
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nextTick(() => resetIsScrolling());
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onUpdated();
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emitEvents();
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};
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const scrollToItem = (rowIndex = 0, columnIdx = 0, alignment = AUTO_ALIGNMENT) => {
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const _states = unref(states);
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columnIdx = Math.max(0, Math.min(columnIdx, props.totalColumn - 1));
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rowIndex = Math.max(0, Math.min(rowIndex, props.totalRow - 1));
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const scrollBarWidth = getScrollBarWidth(ns.namespace.value);
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const _cache = unref(cache);
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const estimatedHeight = getEstimatedTotalHeight(props, _cache);
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const estimatedWidth = getEstimatedTotalWidth(props, _cache);
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scrollTo({
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scrollLeft: getColumnOffset(props, columnIdx, alignment, _states.scrollLeft, _cache, estimatedWidth > props.width ? scrollBarWidth : 0),
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scrollTop: getRowOffset(props, rowIndex, alignment, _states.scrollTop, _cache, estimatedHeight > props.height ? scrollBarWidth : 0)
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});
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};
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const getItemStyle = (rowIndex, columnIndex) => {
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const { columnWidth, direction, rowHeight } = props;
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const itemStyleCache = getItemStyleCache.value(clearCache && columnWidth, clearCache && rowHeight, clearCache && direction);
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const key = `${rowIndex},${columnIndex}`;
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if (hasOwn(itemStyleCache, key)) {
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return itemStyleCache[key];
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} else {
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const [, left] = getColumnPosition(props, columnIndex, unref(cache));
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const _cache = unref(cache);
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const rtl = isRTL(direction);
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const [height, top] = getRowPosition(props, rowIndex, _cache);
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const [width] = getColumnPosition(props, columnIndex, _cache);
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itemStyleCache[key] = {
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position: "absolute",
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left: rtl ? void 0 : `${left}px`,
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right: rtl ? `${left}px` : void 0,
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top: `${top}px`,
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height: `${height}px`,
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width: `${width}px`
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};
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return itemStyleCache[key];
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}
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};
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const resetIsScrolling = () => {
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states.value.isScrolling = false;
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nextTick(() => {
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getItemStyleCache.value(-1, null, null);
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});
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};
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onMounted(() => {
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if (!isClient)
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return;
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const { initScrollLeft, initScrollTop } = props;
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const windowElement = unref(windowRef);
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if (windowElement) {
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if (isNumber(initScrollLeft)) {
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windowElement.scrollLeft = initScrollLeft;
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}
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if (isNumber(initScrollTop)) {
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windowElement.scrollTop = initScrollTop;
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}
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}
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emitEvents();
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});
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const onUpdated = () => {
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const { direction } = props;
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const { scrollLeft, scrollTop, updateRequested } = unref(states);
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const windowElement = unref(windowRef);
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if (updateRequested && windowElement) {
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if (direction === RTL) {
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switch (getRTLOffsetType()) {
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case RTL_OFFSET_NAG: {
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windowElement.scrollLeft = -scrollLeft;
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break;
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}
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case RTL_OFFSET_POS_ASC: {
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windowElement.scrollLeft = scrollLeft;
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break;
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}
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default: {
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const { clientWidth, scrollWidth } = windowElement;
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windowElement.scrollLeft = scrollWidth - clientWidth - scrollLeft;
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break;
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}
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}
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} else {
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windowElement.scrollLeft = Math.max(0, scrollLeft);
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}
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windowElement.scrollTop = Math.max(0, scrollTop);
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}
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};
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const { resetAfterColumnIndex, resetAfterRowIndex, resetAfter } = instance.proxy;
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expose({
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windowRef,
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innerRef,
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getItemStyleCache,
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scrollTo,
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scrollToItem,
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states,
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resetAfterColumnIndex,
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resetAfterRowIndex,
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resetAfter
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});
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const renderScrollbars = () => {
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const {
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scrollbarAlwaysOn,
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scrollbarStartGap,
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scrollbarEndGap,
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totalColumn,
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totalRow
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} = props;
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const width = unref(parsedWidth);
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const height = unref(parsedHeight);
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const estimatedWidth = unref(estimatedTotalWidth);
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const estimatedHeight = unref(estimatedTotalHeight);
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const { scrollLeft, scrollTop } = unref(states);
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const horizontalScrollbar = h(ScrollBar, {
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ref: hScrollbar,
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alwaysOn: scrollbarAlwaysOn,
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startGap: scrollbarStartGap,
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endGap: scrollbarEndGap,
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class: ns.e("horizontal"),
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clientSize: width,
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layout: "horizontal",
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onScroll: onHorizontalScroll,
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ratio: width * 100 / estimatedWidth,
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scrollFrom: scrollLeft / (estimatedWidth - width),
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total: totalRow,
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visible: true
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});
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const verticalScrollbar = h(ScrollBar, {
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ref: vScrollbar,
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alwaysOn: scrollbarAlwaysOn,
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startGap: scrollbarStartGap,
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endGap: scrollbarEndGap,
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class: ns.e("vertical"),
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clientSize: height,
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layout: "vertical",
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onScroll: onVerticalScroll,
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ratio: height * 100 / estimatedHeight,
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scrollFrom: scrollTop / (estimatedHeight - height),
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total: totalColumn,
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visible: true
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});
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return {
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horizontalScrollbar,
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verticalScrollbar
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};
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};
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const renderItems = () => {
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var _a;
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const [columnStart, columnEnd] = unref(columnsToRender);
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const [rowStart, rowEnd] = unref(rowsToRender);
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const { data, totalColumn, totalRow, useIsScrolling, itemKey } = props;
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const children = [];
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if (totalRow > 0 && totalColumn > 0) {
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for (let row = rowStart; row <= rowEnd; row++) {
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for (let column = columnStart; column <= columnEnd; column++) {
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children.push((_a = slots.default) == null ? void 0 : _a.call(slots, {
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columnIndex: column,
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data,
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key: itemKey({ columnIndex: column, data, rowIndex: row }),
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isScrolling: useIsScrolling ? unref(states).isScrolling : void 0,
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style: getItemStyle(row, column),
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rowIndex: row
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}));
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}
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}
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}
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return children;
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};
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const renderInner = () => {
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const Inner = resolveDynamicComponent(props.innerElement);
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const children = renderItems();
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return [
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h(Inner, {
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style: unref(innerStyle),
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ref: innerRef
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}, !isString(Inner) ? {
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default: () => children
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} : children)
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];
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};
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const renderWindow = () => {
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const Container = resolveDynamicComponent(props.containerElement);
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const { horizontalScrollbar, verticalScrollbar } = renderScrollbars();
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const Inner = renderInner();
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return h("div", {
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key: 0,
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class: ns.e("wrapper"),
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role: props.role
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}, [
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h(Container, {
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class: props.className,
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style: unref(windowStyle),
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onScroll,
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onWheel,
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ref: windowRef
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}, !isString(Container) ? { default: () => Inner } : Inner),
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horizontalScrollbar,
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verticalScrollbar
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]);
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};
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return renderWindow;
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}
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});
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};
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export { createGrid as default };
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//# sourceMappingURL=build-grid.mjs.map
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