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253
node_modules/vant/lib/index-bar/IndexBar.js
generated
vendored
Normal file
253
node_modules/vant/lib/index-bar/IndexBar.js
generated
vendored
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var __defProp = Object.defineProperty;
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var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
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var __getOwnPropNames = Object.getOwnPropertyNames;
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var __hasOwnProp = Object.prototype.hasOwnProperty;
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var __export = (target, all) => {
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for (var name2 in all)
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__defProp(target, name2, { get: all[name2], enumerable: true });
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};
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var __copyProps = (to, from, except, desc) => {
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if (from && typeof from === "object" || typeof from === "function") {
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for (let key of __getOwnPropNames(from))
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if (!__hasOwnProp.call(to, key) && key !== except)
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__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
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}
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return to;
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};
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var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
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var stdin_exports = {};
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__export(stdin_exports, {
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INDEX_BAR_KEY: () => INDEX_BAR_KEY,
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default: () => stdin_default,
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indexBarProps: () => indexBarProps
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});
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module.exports = __toCommonJS(stdin_exports);
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var import_vue = require("vue");
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var import_utils = require("../utils");
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var import_use = require("@vant/use");
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var import_use_touch = require("../composables/use-touch");
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var import_use_expose = require("../composables/use-expose");
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function genAlphabet() {
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const charCodeOfA = "A".charCodeAt(0);
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const indexList = Array(26).fill("").map((_, i) => String.fromCharCode(charCodeOfA + i));
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return indexList;
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}
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const [name, bem] = (0, import_utils.createNamespace)("index-bar");
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const indexBarProps = {
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sticky: import_utils.truthProp,
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zIndex: import_utils.numericProp,
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teleport: [String, Object],
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highlightColor: String,
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stickyOffsetTop: (0, import_utils.makeNumberProp)(0),
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indexList: {
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type: Array,
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default: genAlphabet
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}
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};
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const INDEX_BAR_KEY = Symbol(name);
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var stdin_default = (0, import_vue.defineComponent)({
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name,
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props: indexBarProps,
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emits: ["select", "change"],
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setup(props, {
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emit,
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slots
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}) {
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const root = (0, import_vue.ref)();
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const sidebar = (0, import_vue.ref)();
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const activeAnchor = (0, import_vue.ref)("");
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const touch = (0, import_use_touch.useTouch)();
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const scrollParent = (0, import_use.useScrollParent)(root);
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const {
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children,
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linkChildren
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} = (0, import_use.useChildren)(INDEX_BAR_KEY);
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let selectActiveIndex;
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linkChildren({
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props
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});
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const sidebarStyle = (0, import_vue.computed)(() => {
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if ((0, import_utils.isDef)(props.zIndex)) {
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return {
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zIndex: +props.zIndex + 1
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};
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}
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});
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const highlightStyle = (0, import_vue.computed)(() => {
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if (props.highlightColor) {
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return {
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color: props.highlightColor
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};
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}
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});
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const getActiveAnchor = (scrollTop, rects) => {
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for (let i = children.length - 1; i >= 0; i--) {
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const prevHeight = i > 0 ? rects[i - 1].height : 0;
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const reachTop = props.sticky ? prevHeight + props.stickyOffsetTop : 0;
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if (scrollTop + reachTop >= rects[i].top) {
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return i;
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}
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}
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return -1;
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};
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const getMatchAnchor = (index) => children.find((item) => String(item.index) === index);
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const onScroll = () => {
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if ((0, import_utils.isHidden)(root)) {
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return;
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}
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const {
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sticky,
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indexList
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} = props;
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const scrollTop = (0, import_utils.getScrollTop)(scrollParent.value);
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const scrollParentRect = (0, import_use.useRect)(scrollParent);
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const rects = children.map((item) => item.getRect(scrollParent.value, scrollParentRect));
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let active = -1;
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if (selectActiveIndex) {
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const match = getMatchAnchor(selectActiveIndex);
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if (match) {
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const rect = match.getRect(scrollParent.value, scrollParentRect);
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if (props.sticky && props.stickyOffsetTop) {
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active = getActiveAnchor(rect.top - props.stickyOffsetTop, rects);
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} else {
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active = getActiveAnchor(rect.top, rects);
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}
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}
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} else {
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active = getActiveAnchor(scrollTop, rects);
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}
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activeAnchor.value = indexList[active];
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if (sticky) {
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children.forEach((item, index) => {
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const {
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state,
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$el
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} = item;
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if (index === active || index === active - 1) {
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const rect = $el.getBoundingClientRect();
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state.left = rect.left;
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state.width = rect.width;
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} else {
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state.left = null;
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state.width = null;
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}
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if (index === active) {
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state.active = true;
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state.top = Math.max(props.stickyOffsetTop, rects[index].top - scrollTop) + scrollParentRect.top;
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} else if (index === active - 1 && selectActiveIndex === "") {
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const activeItemTop = rects[active].top - scrollTop;
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state.active = activeItemTop > 0;
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state.top = activeItemTop + scrollParentRect.top - rects[index].height;
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} else {
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state.active = false;
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}
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});
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}
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selectActiveIndex = "";
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};
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const init = () => {
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(0, import_vue.nextTick)(onScroll);
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};
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(0, import_use.useEventListener)("scroll", onScroll, {
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target: scrollParent,
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passive: true
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});
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(0, import_vue.onMounted)(init);
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(0, import_vue.watch)(() => props.indexList, init);
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(0, import_vue.watch)(activeAnchor, (value) => {
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if (value) {
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emit("change", value);
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}
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});
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const renderIndexes = () => props.indexList.map((index) => {
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const active = index === activeAnchor.value;
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return (0, import_vue.createVNode)("span", {
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"class": bem("index", {
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active
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}),
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"style": active ? highlightStyle.value : void 0,
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"data-index": index
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}, [index]);
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});
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const scrollTo = (index) => {
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selectActiveIndex = String(index);
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const match = getMatchAnchor(selectActiveIndex);
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if (match) {
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const scrollTop = (0, import_utils.getScrollTop)(scrollParent.value);
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const scrollParentRect = (0, import_use.useRect)(scrollParent);
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const {
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offsetHeight
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} = document.documentElement;
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match.$el.scrollIntoView();
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if (scrollTop === offsetHeight - scrollParentRect.height) {
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onScroll();
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return;
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}
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if (props.sticky && props.stickyOffsetTop) {
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if ((0, import_utils.getRootScrollTop)() === offsetHeight - scrollParentRect.height) {
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(0, import_utils.setRootScrollTop)((0, import_utils.getRootScrollTop)());
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} else {
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(0, import_utils.setRootScrollTop)((0, import_utils.getRootScrollTop)() - props.stickyOffsetTop);
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}
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}
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emit("select", match.index);
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}
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};
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const scrollToElement = (element) => {
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const {
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index
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} = element.dataset;
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if (index) {
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scrollTo(index);
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}
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};
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const onClickSidebar = (event) => {
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scrollToElement(event.target);
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};
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let touchActiveIndex;
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const onTouchMove = (event) => {
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touch.move(event);
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if (touch.isVertical()) {
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(0, import_utils.preventDefault)(event);
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const {
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clientX,
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clientY
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} = event.touches[0];
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const target = document.elementFromPoint(clientX, clientY);
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if (target) {
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const {
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index
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} = target.dataset;
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if (index && touchActiveIndex !== index) {
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touchActiveIndex = index;
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scrollToElement(target);
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}
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}
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}
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};
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const renderSidebar = () => (0, import_vue.createVNode)("div", {
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"ref": sidebar,
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"class": bem("sidebar"),
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"style": sidebarStyle.value,
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"onClick": onClickSidebar,
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"onTouchstartPassive": touch.start
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}, [renderIndexes()]);
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(0, import_use_expose.useExpose)({
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scrollTo
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});
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(0, import_use.useEventListener)("touchmove", onTouchMove, {
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target: sidebar
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});
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return () => {
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var _a;
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return (0, import_vue.createVNode)("div", {
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"ref": root,
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"class": bem()
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}, [props.teleport ? (0, import_vue.createVNode)(import_vue.Teleport, {
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"to": props.teleport
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}, {
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default: () => [renderSidebar()]
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}) : renderSidebar(), (_a = slots.default) == null ? void 0 : _a.call(slots)]);
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};
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}
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});
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