"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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exports.__esModule = true;
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exports.default = void 0;
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var _utils = require("../utils");
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var _utils2 = require("./utils");
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var _router = require("../utils/router");
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var _style = require("../utils/dom/style");
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var _event = require("../utils/dom/event");
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var _unit = require("../utils/format/unit");
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var _constant = require("../utils/constant");
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var _interceptor = require("../utils/interceptor");
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var _scroll = require("../utils/dom/scroll");
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var _relation = require("../mixins/relation");
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var _bindEvent = require("../mixins/bind-event");
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var _Title = _interopRequireDefault(require("./Title"));
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var _sticky = _interopRequireDefault(require("../sticky"));
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var _Content = _interopRequireDefault(require("./Content"));
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// Utils
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// Mixins
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// Components
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var _createNamespace = (0, _utils.createNamespace)('tabs'),
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createComponent = _createNamespace[0],
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bem = _createNamespace[1];
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var _default2 = createComponent({
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mixins: [(0, _relation.ParentMixin)('vanTabs'), (0, _bindEvent.BindEventMixin)(function (bind) {
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if (!this.scroller) {
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this.scroller = (0, _scroll.getScroller)(this.$el);
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}
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bind(window, 'resize', this.resize, true);
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if (this.scrollspy) {
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bind(this.scroller, 'scroll', this.onScroll, true);
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}
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})],
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inject: {
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vanPopup: {
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default: null
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}
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},
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model: {
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prop: 'active'
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},
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props: {
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color: String,
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border: Boolean,
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sticky: Boolean,
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animated: Boolean,
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swipeable: Boolean,
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scrollspy: Boolean,
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background: String,
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lineWidth: [Number, String],
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lineHeight: [Number, String],
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beforeChange: Function,
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titleActiveColor: String,
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titleInactiveColor: String,
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type: {
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type: String,
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default: 'line'
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},
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active: {
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type: [Number, String],
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default: 0
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},
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ellipsis: {
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type: Boolean,
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default: true
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},
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duration: {
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type: [Number, String],
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default: 0.3
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},
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offsetTop: {
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type: [Number, String],
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default: 0
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},
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lazyRender: {
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type: Boolean,
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default: true
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},
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swipeThreshold: {
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type: [Number, String],
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default: 5
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}
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},
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data: function data() {
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return {
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position: '',
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currentIndex: null,
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lineStyle: {
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backgroundColor: this.color
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}
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};
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},
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computed: {
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// whether the nav is scrollable
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scrollable: function scrollable() {
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return this.children.length > this.swipeThreshold || !this.ellipsis;
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},
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navStyle: function navStyle() {
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return {
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borderColor: this.color,
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background: this.background
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};
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},
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currentName: function currentName() {
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var activeTab = this.children[this.currentIndex];
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if (activeTab) {
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return activeTab.computedName;
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}
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},
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offsetTopPx: function offsetTopPx() {
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return (0, _unit.unitToPx)(this.offsetTop);
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},
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scrollOffset: function scrollOffset() {
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if (this.sticky) {
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return this.offsetTopPx + this.tabHeight;
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}
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return 0;
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}
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},
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watch: {
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color: 'setLine',
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active: function active(name) {
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if (name !== this.currentName) {
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this.setCurrentIndexByName(name);
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}
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},
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children: function children() {
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var _this = this;
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this.setCurrentIndexByName(this.active);
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this.setLine();
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this.$nextTick(function () {
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_this.scrollIntoView(true);
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});
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},
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currentIndex: function currentIndex() {
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this.scrollIntoView();
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this.setLine(); // scroll to correct position
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if (this.stickyFixed && !this.scrollspy) {
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(0, _scroll.setRootScrollTop)(Math.ceil((0, _scroll.getElementTop)(this.$el) - this.offsetTopPx));
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}
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},
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scrollspy: function scrollspy(val) {
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if (val) {
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(0, _event.on)(this.scroller, 'scroll', this.onScroll, true);
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} else {
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(0, _event.off)(this.scroller, 'scroll', this.onScroll);
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}
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}
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},
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mounted: function mounted() {
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var _this2 = this;
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this.init(); // https://github.com/vant-ui/vant/issues/7959
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if (this.vanPopup) {
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this.vanPopup.onReopen(function () {
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_this2.setLine();
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});
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}
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},
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activated: function activated() {
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this.init();
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this.setLine();
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},
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methods: {
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// @exposed-api
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resize: function resize() {
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this.setLine();
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},
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init: function init() {
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var _this3 = this;
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this.$nextTick(function () {
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_this3.inited = true;
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_this3.tabHeight = (0, _scroll.getVisibleHeight)(_this3.$refs.wrap);
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_this3.scrollIntoView(true);
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});
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},
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// update nav bar style
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setLine: function setLine() {
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var _this4 = this;
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var shouldAnimate = this.inited;
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this.$nextTick(function () {
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var titles = _this4.$refs.titles;
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if (!titles || !titles[_this4.currentIndex] || _this4.type !== 'line' || (0, _style.isHidden)(_this4.$el)) {
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return;
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}
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var title = titles[_this4.currentIndex].$el;
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var lineWidth = _this4.lineWidth,
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lineHeight = _this4.lineHeight;
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var left = title.offsetLeft + title.offsetWidth / 2;
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var lineStyle = {
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width: (0, _utils.addUnit)(lineWidth),
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backgroundColor: _this4.color,
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transform: "translateX(" + left + "px) translateX(-50%)"
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};
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if (shouldAnimate) {
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lineStyle.transitionDuration = _this4.duration + "s";
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}
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if ((0, _utils.isDef)(lineHeight)) {
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var height = (0, _utils.addUnit)(lineHeight);
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lineStyle.height = height;
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lineStyle.borderRadius = height;
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}
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_this4.lineStyle = lineStyle;
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});
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},
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// correct the index of active tab
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setCurrentIndexByName: function setCurrentIndexByName(name) {
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var matched = this.children.filter(function (tab) {
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return tab.computedName === name;
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});
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var defaultIndex = (this.children[0] || {}).index || 0;
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this.setCurrentIndex(matched.length ? matched[0].index : defaultIndex);
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},
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setCurrentIndex: function setCurrentIndex(currentIndex) {
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var newIndex = this.findAvailableTab(currentIndex);
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if (!(0, _utils.isDef)(newIndex)) {
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return;
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}
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var newTab = this.children[newIndex];
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var newName = newTab.computedName;
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var shouldEmitChange = this.currentIndex !== null;
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this.currentIndex = newIndex;
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if (newName !== this.active) {
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this.$emit('input', newName);
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if (shouldEmitChange) {
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this.$emit('change', newName, newTab.title);
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}
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}
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},
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findAvailableTab: function findAvailableTab(index) {
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var diff = index < this.currentIndex ? -1 : 1;
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while (index >= 0 && index < this.children.length) {
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if (!this.children[index].disabled) {
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return index;
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}
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index += diff;
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}
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},
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// emit event when clicked
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onClick: function onClick(item, index) {
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var _this5 = this;
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var _this$children$index = this.children[index],
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title = _this$children$index.title,
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disabled = _this$children$index.disabled,
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computedName = _this$children$index.computedName;
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if (disabled) {
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this.$emit('disabled', computedName, title);
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} else {
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(0, _interceptor.callInterceptor)({
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interceptor: this.beforeChange,
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args: [computedName],
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done: function done() {
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_this5.setCurrentIndex(index);
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_this5.scrollToCurrentContent();
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}
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});
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this.$emit('click', computedName, title);
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(0, _router.route)(item.$router, item);
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}
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},
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// scroll active tab into view
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scrollIntoView: function scrollIntoView(immediate) {
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var titles = this.$refs.titles;
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if (!this.scrollable || !titles || !titles[this.currentIndex]) {
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return;
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}
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var nav = this.$refs.nav;
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var title = titles[this.currentIndex].$el;
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var to = title.offsetLeft - (nav.offsetWidth - title.offsetWidth) / 2;
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(0, _utils2.scrollLeftTo)(nav, to, immediate ? 0 : +this.duration);
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},
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onSticktScroll: function onSticktScroll(params) {
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this.stickyFixed = params.isFixed;
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this.$emit('scroll', params);
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},
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// @exposed-api
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scrollTo: function scrollTo(name) {
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var _this6 = this;
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this.$nextTick(function () {
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_this6.setCurrentIndexByName(name);
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_this6.scrollToCurrentContent(true);
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});
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},
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scrollToCurrentContent: function scrollToCurrentContent(immediate) {
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var _this7 = this;
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if (immediate === void 0) {
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immediate = false;
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}
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if (this.scrollspy) {
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var target = this.children[this.currentIndex];
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var el = target == null ? void 0 : target.$el;
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if (el) {
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var to = (0, _scroll.getElementTop)(el, this.scroller) - this.scrollOffset;
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this.lockScroll = true;
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(0, _utils2.scrollTopTo)(this.scroller, to, immediate ? 0 : +this.duration, function () {
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_this7.lockScroll = false;
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});
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}
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}
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},
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onScroll: function onScroll() {
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if (this.scrollspy && !this.lockScroll) {
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var index = this.getCurrentIndexOnScroll();
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this.setCurrentIndex(index);
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}
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},
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getCurrentIndexOnScroll: function getCurrentIndexOnScroll() {
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var children = this.children;
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for (var index = 0; index < children.length; index++) {
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var top = (0, _scroll.getVisibleTop)(children[index].$el);
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if (top > this.scrollOffset) {
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return index === 0 ? 0 : index - 1;
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}
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}
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return children.length - 1;
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}
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},
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render: function render() {
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var _this8 = this,
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_ref;
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var h = arguments[0];
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var type = this.type,
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animated = this.animated,
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scrollable = this.scrollable;
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var Nav = this.children.map(function (item, index) {
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var _item$badge;
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return h(_Title.default, {
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"ref": "titles",
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"refInFor": true,
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"attrs": {
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"type": type,
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"dot": item.dot,
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"info": (_item$badge = item.badge) != null ? _item$badge : item.info,
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"title": item.title,
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"color": _this8.color,
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"isActive": index === _this8.currentIndex,
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"disabled": item.disabled,
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"scrollable": scrollable,
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"activeColor": _this8.titleActiveColor,
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"inactiveColor": _this8.titleInactiveColor
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},
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"style": item.titleStyle,
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"class": item.titleClass,
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"scopedSlots": {
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default: function _default() {
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return item.slots('title');
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}
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},
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"on": {
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"click": function click() {
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_this8.onClick(item, index);
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}
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}
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});
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});
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var Wrap = h("div", {
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"ref": "wrap",
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"class": [bem('wrap', {
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scrollable: scrollable
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}), (_ref = {}, _ref[_constant.BORDER_TOP_BOTTOM] = type === 'line' && this.border, _ref)]
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}, [h("div", {
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"ref": "nav",
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"attrs": {
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"role": "tablist"
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},
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"class": bem('nav', [type, {
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complete: this.scrollable
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}]),
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"style": this.navStyle
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}, [this.slots('nav-left'), Nav, type === 'line' && h("div", {
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"class": bem('line'),
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"style": this.lineStyle
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}), this.slots('nav-right')])]);
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return h("div", {
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"class": bem([type])
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}, [this.sticky ? h(_sticky.default, {
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"attrs": {
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"container": this.$el,
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"offsetTop": this.offsetTop
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},
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"on": {
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"scroll": this.onSticktScroll
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}
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}, [Wrap]) : Wrap, h(_Content.default, {
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"attrs": {
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"count": this.children.length,
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"animated": animated,
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"duration": this.duration,
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"swipeable": this.swipeable,
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"currentIndex": this.currentIndex
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},
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"on": {
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"change": this.setCurrentIndex
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}
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}, [this.slots()])]);
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}
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});
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exports.default = _default2;
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