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