432 lines
12 KiB
JavaScript
432 lines
12 KiB
JavaScript
// Utils
|
|
import { createNamespace, isDef, addUnit } from '../utils';
|
|
import { scrollLeftTo, scrollTopTo } from './utils';
|
|
import { route } from '../utils/router';
|
|
import { isHidden } from '../utils/dom/style';
|
|
import { on, off } from '../utils/dom/event';
|
|
import { unitToPx } from '../utils/format/unit';
|
|
import { BORDER_TOP_BOTTOM } from '../utils/constant';
|
|
import { callInterceptor } from '../utils/interceptor';
|
|
import { getScroller, getVisibleTop, getElementTop, getVisibleHeight, setRootScrollTop } from '../utils/dom/scroll'; // Mixins
|
|
|
|
import { ParentMixin } from '../mixins/relation';
|
|
import { BindEventMixin } from '../mixins/bind-event'; // Components
|
|
|
|
import Title from './Title';
|
|
import Sticky from '../sticky';
|
|
import Content from './Content';
|
|
|
|
var _createNamespace = createNamespace('tabs'),
|
|
createComponent = _createNamespace[0],
|
|
bem = _createNamespace[1];
|
|
|
|
export default createComponent({
|
|
mixins: [ParentMixin('vanTabs'), BindEventMixin(function (bind) {
|
|
if (!this.scroller) {
|
|
this.scroller = getScroller(this.$el);
|
|
}
|
|
|
|
bind(window, 'resize', this.resize, true);
|
|
|
|
if (this.scrollspy) {
|
|
bind(this.scroller, 'scroll', this.onScroll, true);
|
|
}
|
|
})],
|
|
inject: {
|
|
vanPopup: {
|
|
default: null
|
|
}
|
|
},
|
|
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 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.setLine();
|
|
this.$nextTick(function () {
|
|
_this.scrollIntoView(true);
|
|
});
|
|
},
|
|
currentIndex: function currentIndex() {
|
|
this.scrollIntoView();
|
|
this.setLine(); // scroll to correct position
|
|
|
|
if (this.stickyFixed && !this.scrollspy) {
|
|
setRootScrollTop(Math.ceil(getElementTop(this.$el) - this.offsetTopPx));
|
|
}
|
|
},
|
|
scrollspy: function scrollspy(val) {
|
|
if (val) {
|
|
on(this.scroller, 'scroll', this.onScroll, true);
|
|
} else {
|
|
off(this.scroller, 'scroll', this.onScroll);
|
|
}
|
|
}
|
|
},
|
|
mounted: function mounted() {
|
|
var _this2 = this;
|
|
|
|
this.init(); // https://github.com/vant-ui/vant/issues/7959
|
|
|
|
if (this.vanPopup) {
|
|
this.vanPopup.onReopen(function () {
|
|
_this2.setLine();
|
|
});
|
|
}
|
|
},
|
|
activated: function activated() {
|
|
this.init();
|
|
this.setLine();
|
|
},
|
|
methods: {
|
|
// @exposed-api
|
|
resize: function resize() {
|
|
this.setLine();
|
|
},
|
|
init: function init() {
|
|
var _this3 = this;
|
|
|
|
this.$nextTick(function () {
|
|
_this3.inited = true;
|
|
_this3.tabHeight = getVisibleHeight(_this3.$refs.wrap);
|
|
|
|
_this3.scrollIntoView(true);
|
|
});
|
|
},
|
|
// update nav bar style
|
|
setLine: function setLine() {
|
|
var _this4 = this;
|
|
|
|
var shouldAnimate = this.inited;
|
|
this.$nextTick(function () {
|
|
var titles = _this4.$refs.titles;
|
|
|
|
if (!titles || !titles[_this4.currentIndex] || _this4.type !== 'line' || isHidden(_this4.$el)) {
|
|
return;
|
|
}
|
|
|
|
var title = titles[_this4.currentIndex].$el;
|
|
var lineWidth = _this4.lineWidth,
|
|
lineHeight = _this4.lineHeight;
|
|
var left = title.offsetLeft + title.offsetWidth / 2;
|
|
var lineStyle = {
|
|
width: addUnit(lineWidth),
|
|
backgroundColor: _this4.color,
|
|
transform: "translateX(" + left + "px) translateX(-50%)"
|
|
};
|
|
|
|
if (shouldAnimate) {
|
|
lineStyle.transitionDuration = _this4.duration + "s";
|
|
}
|
|
|
|
if (isDef(lineHeight)) {
|
|
var height = addUnit(lineHeight);
|
|
lineStyle.height = height;
|
|
lineStyle.borderRadius = height;
|
|
}
|
|
|
|
_this4.lineStyle = lineStyle;
|
|
});
|
|
},
|
|
// correct the index of active tab
|
|
setCurrentIndexByName: function setCurrentIndexByName(name) {
|
|
var matched = this.children.filter(function (tab) {
|
|
return tab.computedName === name;
|
|
});
|
|
var defaultIndex = (this.children[0] || {}).index || 0;
|
|
this.setCurrentIndex(matched.length ? matched[0].index : defaultIndex);
|
|
},
|
|
setCurrentIndex: function setCurrentIndex(currentIndex) {
|
|
var newIndex = this.findAvailableTab(currentIndex);
|
|
|
|
if (!isDef(newIndex)) {
|
|
return;
|
|
}
|
|
|
|
var newTab = this.children[newIndex];
|
|
var newName = newTab.computedName;
|
|
var shouldEmitChange = this.currentIndex !== null;
|
|
this.currentIndex = newIndex;
|
|
|
|
if (newName !== this.active) {
|
|
this.$emit('input', newName);
|
|
|
|
if (shouldEmitChange) {
|
|
this.$emit('change', newName, newTab.title);
|
|
}
|
|
}
|
|
},
|
|
findAvailableTab: function findAvailableTab(index) {
|
|
var diff = index < this.currentIndex ? -1 : 1;
|
|
|
|
while (index >= 0 && index < this.children.length) {
|
|
if (!this.children[index].disabled) {
|
|
return index;
|
|
}
|
|
|
|
index += diff;
|
|
}
|
|
},
|
|
// emit event when clicked
|
|
onClick: function onClick(item, index) {
|
|
var _this5 = this;
|
|
|
|
var _this$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 {
|
|
callInterceptor({
|
|
interceptor: this.beforeChange,
|
|
args: [computedName],
|
|
done: function done() {
|
|
_this5.setCurrentIndex(index);
|
|
|
|
_this5.scrollToCurrentContent();
|
|
}
|
|
});
|
|
this.$emit('click', computedName, title);
|
|
route(item.$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].$el;
|
|
var to = title.offsetLeft - (nav.offsetWidth - title.offsetWidth) / 2;
|
|
scrollLeftTo(nav, to, immediate ? 0 : +this.duration);
|
|
},
|
|
onSticktScroll: function onSticktScroll(params) {
|
|
this.stickyFixed = params.isFixed;
|
|
this.$emit('scroll', params);
|
|
},
|
|
// @exposed-api
|
|
scrollTo: function scrollTo(name) {
|
|
var _this6 = this;
|
|
|
|
this.$nextTick(function () {
|
|
_this6.setCurrentIndexByName(name);
|
|
|
|
_this6.scrollToCurrentContent(true);
|
|
});
|
|
},
|
|
scrollToCurrentContent: function scrollToCurrentContent(immediate) {
|
|
var _this7 = this;
|
|
|
|
if (immediate === void 0) {
|
|
immediate = false;
|
|
}
|
|
|
|
if (this.scrollspy) {
|
|
var target = this.children[this.currentIndex];
|
|
var el = target == null ? void 0 : target.$el;
|
|
|
|
if (el) {
|
|
var to = getElementTop(el, this.scroller) - this.scrollOffset;
|
|
this.lockScroll = true;
|
|
scrollTopTo(this.scroller, to, immediate ? 0 : +this.duration, function () {
|
|
_this7.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 = getVisibleTop(children[index].$el);
|
|
|
|
if (top > this.scrollOffset) {
|
|
return index === 0 ? 0 : index - 1;
|
|
}
|
|
}
|
|
|
|
return children.length - 1;
|
|
}
|
|
},
|
|
render: function render() {
|
|
var _this8 = this,
|
|
_ref;
|
|
|
|
var h = arguments[0];
|
|
var type = this.type,
|
|
animated = this.animated,
|
|
scrollable = this.scrollable;
|
|
var Nav = this.children.map(function (item, index) {
|
|
var _item$badge;
|
|
|
|
return h(Title, {
|
|
"ref": "titles",
|
|
"refInFor": true,
|
|
"attrs": {
|
|
"type": type,
|
|
"dot": item.dot,
|
|
"info": (_item$badge = item.badge) != null ? _item$badge : item.info,
|
|
"title": item.title,
|
|
"color": _this8.color,
|
|
"isActive": index === _this8.currentIndex,
|
|
"disabled": item.disabled,
|
|
"scrollable": scrollable,
|
|
"activeColor": _this8.titleActiveColor,
|
|
"inactiveColor": _this8.titleInactiveColor
|
|
},
|
|
"style": item.titleStyle,
|
|
"class": item.titleClass,
|
|
"scopedSlots": {
|
|
default: function _default() {
|
|
return item.slots('title');
|
|
}
|
|
},
|
|
"on": {
|
|
"click": function click() {
|
|
_this8.onClick(item, index);
|
|
}
|
|
}
|
|
});
|
|
});
|
|
var Wrap = h("div", {
|
|
"ref": "wrap",
|
|
"class": [bem('wrap', {
|
|
scrollable: scrollable
|
|
}), (_ref = {}, _ref[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, {
|
|
"attrs": {
|
|
"container": this.$el,
|
|
"offsetTop": this.offsetTop
|
|
},
|
|
"on": {
|
|
"scroll": this.onSticktScroll
|
|
}
|
|
}, [Wrap]) : Wrap, h(Content, {
|
|
"attrs": {
|
|
"count": this.children.length,
|
|
"animated": animated,
|
|
"duration": this.duration,
|
|
"swipeable": this.swipeable,
|
|
"currentIndex": this.currentIndex
|
|
},
|
|
"on": {
|
|
"change": this.setCurrentIndex
|
|
}
|
|
}, [this.slots()])]);
|
|
}
|
|
}); |