mirror of
https://gitee.com/ant-design-vue/ant-design-vue.git
synced 2024-12-11 00:06:06 +08:00
300 lines
7.8 KiB
TypeScript
300 lines
7.8 KiB
TypeScript
import { defineComponent, inject, nextTick, provide } from 'vue';
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import PropTypes from '../_util/vue-types';
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import classNames from '../_util/classNames';
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import addEventListener from '../vc-util/Dom/addEventListener';
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import Affix from '../affix';
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import scrollTo from '../_util/scrollTo';
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import getScroll from '../_util/getScroll';
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import { findDOMNode } from '../_util/props-util';
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import BaseMixin from '../_util/BaseMixin';
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import { defaultConfigProvider } from '../config-provider';
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function getDefaultContainer() {
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return window;
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}
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function getOffsetTop(element: HTMLElement, container: AnchorContainer): number {
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if (!element) {
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return 0;
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}
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if (!element.getClientRects().length) {
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return 0;
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}
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const rect = element.getBoundingClientRect();
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if (rect.width || rect.height) {
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if (container === window) {
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container = element.ownerDocument.documentElement;
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return rect.top - container.clientTop;
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}
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return rect.top - (container as HTMLElement).getBoundingClientRect().top;
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}
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return rect.top;
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}
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const sharpMatcherRegx = /#([^#]+)$/;
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type Section = {
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link: string;
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top: number;
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};
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export type AnchorContainer = HTMLElement | Window;
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const AnchorProps = {
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prefixCls: PropTypes.string,
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offsetTop: PropTypes.number,
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bounds: PropTypes.number,
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affix: PropTypes.looseBool.def(true),
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showInkInFixed: PropTypes.looseBool.def(false),
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getContainer: PropTypes.func.def(getDefaultContainer),
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wrapperClass: PropTypes.string,
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wrapperStyle: PropTypes.style,
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getCurrentAnchor: PropTypes.func,
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targetOffset: PropTypes.number,
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onChange: PropTypes.func,
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onClick: PropTypes.func,
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};
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export interface AntAnchor {
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registerLink: (link: string) => void;
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unregisterLink: (link: string) => void;
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$data: AnchorState;
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scrollTo: (link: string) => void;
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$emit?: Function;
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}
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export interface AnchorState {
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activeLink: null | string;
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scrollContainer: HTMLElement | Window;
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links: string[];
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scrollEvent: any;
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animating: boolean;
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sPrefixCls?: string;
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}
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export default defineComponent({
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name: 'AAnchor',
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mixins: [BaseMixin],
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inheritAttrs: false,
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props: AnchorProps,
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emits: ['change', 'click'],
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data() {
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// this.links = [];
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// this.sPrefixCls = '';
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return {
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activeLink: null,
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links: [],
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sPrefixCls: '',
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scrollContainer: null,
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scrollEvent: null,
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animating: false,
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} as AnchorState;
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},
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created() {
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provide('antAnchor', {
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registerLink: (link: string) => {
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if (!this.links.includes(link)) {
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this.links.push(link);
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}
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},
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unregisterLink: (link: string) => {
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const index = this.links.indexOf(link);
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if (index !== -1) {
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this.links.splice(index, 1);
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}
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},
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$data: this.$data,
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scrollTo: this.handleScrollTo,
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} as AntAnchor);
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provide('antAnchorContext', this);
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},
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setup() {
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return {
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configProvider: inject('configProvider', defaultConfigProvider),
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};
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},
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mounted() {
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nextTick(() => {
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const { getContainer } = this;
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this.scrollContainer = getContainer();
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this.scrollEvent = addEventListener(this.scrollContainer, 'scroll', this.handleScroll);
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this.handleScroll();
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});
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},
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updated() {
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nextTick(() => {
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if (this.scrollEvent) {
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const { getContainer } = this;
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const currentContainer = getContainer();
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if (this.scrollContainer !== currentContainer) {
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this.scrollContainer = currentContainer;
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this.scrollEvent.remove();
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this.scrollEvent = addEventListener(this.scrollContainer, 'scroll', this.handleScroll);
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this.handleScroll();
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}
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}
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this.updateInk();
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});
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},
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beforeUnmount() {
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if (this.scrollEvent) {
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this.scrollEvent.remove();
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}
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},
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methods: {
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getCurrentActiveLink(offsetTop = 0, bounds = 5) {
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const { getCurrentAnchor } = this;
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if (typeof getCurrentAnchor === 'function') {
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return getCurrentAnchor();
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}
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const activeLink = '';
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if (typeof document === 'undefined') {
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return activeLink;
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}
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const linkSections: Array<Section> = [];
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const { getContainer } = this;
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const container = getContainer();
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this.links.forEach(link => {
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const sharpLinkMatch = sharpMatcherRegx.exec(link.toString());
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if (!sharpLinkMatch) {
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return;
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}
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const target = document.getElementById(sharpLinkMatch[1]);
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if (target) {
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const top = getOffsetTop(target, container);
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if (top < offsetTop + bounds) {
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linkSections.push({
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link,
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top,
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});
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}
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}
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});
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if (linkSections.length) {
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const maxSection = linkSections.reduce((prev, curr) => (curr.top > prev.top ? curr : prev));
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return maxSection.link;
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}
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return '';
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},
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handleScrollTo(link) {
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const { offsetTop, getContainer, targetOffset } = this;
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this.setCurrentActiveLink(link);
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const container = getContainer();
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const scrollTop = getScroll(container, true);
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const sharpLinkMatch = sharpMatcherRegx.exec(link);
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if (!sharpLinkMatch) {
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return;
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}
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const targetElement = document.getElementById(sharpLinkMatch[1]);
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if (!targetElement) {
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return;
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}
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const eleOffsetTop = getOffsetTop(targetElement, container);
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let y = scrollTop + eleOffsetTop;
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y -= targetOffset !== undefined ? targetOffset : offsetTop || 0;
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this.animating = true;
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scrollTo(y, {
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callback: () => {
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this.animating = false;
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},
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getContainer,
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});
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},
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setCurrentActiveLink(link: string) {
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const { activeLink } = this;
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if (activeLink !== link) {
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this.setState({
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activeLink: link,
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});
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this.$emit('change', link);
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}
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},
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handleScroll() {
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if (this.animating) {
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return;
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}
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const { offsetTop, bounds, targetOffset } = this;
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const currentActiveLink = this.getCurrentActiveLink(
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targetOffset !== undefined ? targetOffset : offsetTop || 0,
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bounds,
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);
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this.setCurrentActiveLink(currentActiveLink);
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},
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updateInk() {
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if (typeof document === 'undefined') {
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return;
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}
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const { sPrefixCls } = this;
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const linkNode = findDOMNode(this).getElementsByClassName(
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`${sPrefixCls}-link-title-active`,
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)[0];
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if (linkNode) {
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(this.$refs.inkNode as HTMLElement).style.top = `${linkNode.offsetTop +
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linkNode.clientHeight / 2 -
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4.5}px`;
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}
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},
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},
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render() {
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const {
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prefixCls: customizePrefixCls,
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offsetTop,
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affix,
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showInkInFixed,
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activeLink,
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$slots,
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getContainer,
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} = this;
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const getPrefixCls = this.configProvider.getPrefixCls;
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const prefixCls = getPrefixCls('anchor', customizePrefixCls);
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this.sPrefixCls = prefixCls;
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const inkClass = classNames(`${prefixCls}-ink-ball`, {
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visible: activeLink,
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});
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const wrapperClass = classNames(this.wrapperClass, `${prefixCls}-wrapper`);
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const anchorClass = classNames(prefixCls, {
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fixed: !affix && !showInkInFixed,
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});
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const wrapperStyle = {
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maxHeight: offsetTop ? `calc(100vh - ${offsetTop}px)` : '100vh',
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...this.wrapperStyle,
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};
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const anchorContent = (
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<div class={wrapperClass} style={wrapperStyle}>
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<div class={anchorClass}>
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<div class={`${prefixCls}-ink`}>
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<span class={inkClass} ref="inkNode" />
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</div>
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{$slots.default?.()}
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</div>
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</div>
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);
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return !affix ? (
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anchorContent
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) : (
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<Affix {...this.$attrs} offsetTop={offsetTop} target={getContainer}>
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{anchorContent}
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</Affix>
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);
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},
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});
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