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<!-- z-tabs v0.2.5 by-ZXLee -->
<!-- github地址:https://github.com/SmileZXLee/uni-z-tabs -->
<!-- dcloud地址:https://ext.dcloud.net.cn/plugin?name=z-tabs -->
<!-- 反馈QQ群790460711 -->
<template name="z-tabs">
<view class="z-tabs-conatiner" :style="[{background:bgColor}, tabsStyle]">
<view class="z-tabs-left">
<slot name="left" />
</view>
<view ref="z-tabs-scroll-view-conatiner" class="z-tabs-scroll-view-conatiner">
<scroll-view ref="z-tabs-scroll-view" class="z-tabs-scroll-view" :scroll-x="true" :scroll-left="scrollLeft" :show-scrollbar="false" :scroll-with-animation="isFirstLoaded" @scroll="scroll">
<view class="z-tabs-list-container" :style="[tabsListStyle]">
<view class="z-tabs-list" :style="[tabsListStyle, {marginTop: -finalBottomSpace+'px'}]">
<view :ref="`z-tabs-item-${index}`" :id="`z-tabs-item-${index}`" class="z-tabs-item" :style="[tabStyle]" v-for="(item,index) in list" :key="index" @click="tabsClick(index,item)">
<view class="z-tabs-item-title-container">
<text :class="{'z-tabs-item-title':true,'z-tabs-item-title-disabled':item.disabled}"
:style="[{color:item.disabled?disabledColor:(currentIndex===index?activeColor:inactiveColor)},item.disabled?disabledStyle:(currentIndex===index?activeStyle:inactiveStyle)]">
{{item[nameKey]||item}}
</text>
<text v-if="item.badge&&_formatCount(item.badge.count).length" class="z-tabs-item-badge" :style="[badgeStyle]">{{_formatCount(item.badge.count)}}</text>
</view>
</view>
</view>
<view class="z-tabs-bottom" :style="[{width: tabsContainerWidth+'px', bottom: finalBottomSpace+'px'}]">
<view ref="z-tabs-bottom-dot" class="z-tabs-bottom-dot"
<!-- #ifndef APP-NVUE -->
:style="[{transform:`translateX(${bottomDotX}px)`,transition:dotTransition,background:activeColor},finalDotStyle]"
<!-- #endif -->
<!-- #ifdef APP-NVUE -->
:style="[{background:activeColor},finalDotStyle]"
<!-- #endif -->
/>
</view>
</view>
</scroll-view>
</view>
<view class="z-tabs-right">
<slot name="right" />
</view>
</view>
</template>
<script>
// #ifdef APP-NVUE
const weexDom = weex.requireModule('dom');
const weexAnimation = weex.requireModule('animation');
// #endif
import zTabsConfig from './config/index'
//获取默认配置信息
function _gc(key, defaultValue) {
let config = null;
if (zTabsConfig && Object.keys(zTabsConfig).length) {
config = zTabsConfig;
} else {
return defaultValue;
}
const value = config[_toKebab(key)];
return value === undefined ? defaultValue : value;
}
//驼峰转短横线
function _toKebab(value) {
return value.replace(/([A-Z])/g, "-$1").toLowerCase();
}
/**
* z-tabs 标签
* @description 一个简单轻量的tabs标签,全平台兼容,支持nvue、vue3
* @tutorial https://ext.dcloud.net.cn/plugin?name=z-tabs
* @property {Array} list 数据源数组,支持形如['tab1','tab2']的格式或[{name:'tab1',value:1}]的格式
* @property {Number|String} current 当前选中的index,默认为0
* @property {Number|String} scroll-count list数组长度超过scrollCount时滚动显示(不自动铺满全屏),默认为5
* @property {Number|String} tab-width 自定义每个tab的宽度,默认为0,即代表根据内容自动撑开,单位rpx,支持传100、"100px"或"100rpx"
* @property {Number|String} bar-width 滑块宽度,单位rpx,支持传100、"100px"或"100rpx"
* @property {Number|String} bar-height 滑块高度,单位rpx,支持传100、"100px"或"100rpx"
* @property {Object} bar-style 滑块样式,其中的width和height将被bar-width和bar-height覆盖
* @property {Number|String} bottom-space tabs与底部的间距,单位rpx,支持传100、"100px"或"100rpx"
* @property {String} bar-animate-mode 切换tab时滑块动画模式,与swiper联动时有效,点击切换tab时无效,必须调用setDx。默认为line,即切换tab时滑块宽度保持不变,线性运动。可选值为worm,即为类似毛毛虫蠕动效果
* @property {String} name-key list中item的name(标题)的key,默认为name
* @property {String} value-key list中item的value的key,默认为value
* @property {String} active-color 激活状态tab的颜色
* @property {String} inactive-color 未激活状态tab的颜色
* @property {String} disabled-color 禁用状态tab的颜色
* @property {Object} active-style 激活状态tab的样式
* @property {Object} inactive-style 未激活状态tab的样式
* @property {Object} disabled-style 禁用状态tab的样式
* @property {Number|String} badge-max-count 徽标数最大数字限制,超过这个数字将变成badge-max-count+,默认为99
* @property {Object} badge-style 徽标样式,例如可自定义背景色,字体等等
* @property {String} bg-color z-tabs背景色
* @property {Object} tabs-style z-tabs样式
* @property {Boolean} init-trigger-change 初始化时是否自动触发change事件
* @event {Function(index,value)} change tabs改变时触发,index:当前切换到的index;value:当前切换到的value
* @example <z-tabs :list="list"></z-tabs>
*/
export default {
name: 'z-tabs',
data() {
return {
currentIndex: 0,
currentSwiperIndex: 0,
bottomDotX: -1,
bottomDotXForIndex: 0,
showBottomDot: false,
shouldSetDx: true,
barCalcedWidth: 0,
pxBarWidth: 0,
scrollLeft: 0,
tabsSuperWidth: uni.upx2px(750),
tabsWidth: uni.upx2px(750),
tabsHeight: uni.upx2px(80),
tabsLeft: 0,
tabsContainerWidth: 0,
itemNodeInfos: [],
isFirstLoaded: false,
currentScrollLeft: 0,
changeTriggerFailed: false,
currentChanged: false
};
},
props: {
//数据源数组,支持形如['tab1','tab2']的格式或[{name:'tab1',value:1}]的格式
list: {
type: Array,
default: function() {
return [];
}
},
//当前选中的index
current: {
type: [Number, String],
default: _gc('current',0)
},
//list数组长度超过scrollCount时滚动显示(不自动铺满全屏)
scrollCount: {
type: [Number, String],
default: _gc('scrollCount',5)
},
//z-tabs样式
tabsStyle: {
type: Object,
default: function() {
return _gc('tabsStyle',{})
}
},
//自定义每个tab的宽度,默认为0,即代表根据内容自动撑开,单位rpx,支持传100、"100px"或"100rpx"
tabWidth: {
type: [Number, String],
default: _gc('tabWidth',0)
},
//滑块宽度,单位rpx,支持传100、"100px"或"100rpx"
barWidth: {
type: [Number, String],
default: _gc('barWidth',45)
},
//滑块高度,单位rpx,支持传100、"100px"或"100rpx"
barHeight: {
type: [Number, String],
default: _gc('barHeight',8)
},
//滑块样式,其中的width和height将被barWidth和barHeight覆盖
barStyle: {
type: Object,
default: function() {
return _gc('barStyle',{});
}
},
//tabs与底部的间距,单位rpx,支持传100、"100px"或"100rpx"
bottomSpace: {
type: [Number, String],
default: _gc('bottomSpace',8)
},
//切换tab时滑块动画模式,与swiper联动时有效,点击切换tab时无效,必须调用setDx。默认为line,即切换tab时滑块宽度保持不变,线性运动。可选值为worm,即为类似毛毛虫蠕动效果
barAnimateMode: {
type: String,
default: _gc('barAnimateMode','line')
},
//list中item的name(标题)的key
nameKey: {
type: String,
default: _gc('nameKey','name')
},
//list中item的value的key
valueKey: {
type: String,
default: _gc('valueKey','value')
},
//激活状态tab的颜色
activeColor: {
type: String,
default: _gc('activeColor','#007AFF')
},
//未激活状态tab的颜色
inactiveColor: {
type: String,
default: _gc('inactiveColor','#666666')
},
//禁用状态tab的颜色
disabledColor: {
type: String,
default: _gc('disabledColor','#bbbbbb')
},
//激活状态tab的样式
activeStyle: {
type: Object,
default: function() {
return _gc('activeStyle',{});
}
},
//未激活状态tab的样式
inactiveStyle: {
type: Object,
default: function() {
return _gc('inactiveStyle',{});
}
},
//禁用状态tab的样式
disabledStyle: {
type: Object,
default: function() {
return _gc('disabledStyle',{});
}
},
//z-tabs背景色
bgColor: {
type: String,
default: _gc('bgColor','white')
},
//徽标数最大数字限制,超过这个数字将变成badgeMaxCount+
badgeMaxCount: {
type: [Number, String],
default: _gc('badgeMaxCount',99)
},
//徽标样式,例如可自定义背景色,字体等等
badgeStyle: {
type: Object,
default: function() {
return _gc('badgeStyle',{})
}
},
//初始化时是否自动触发change事件
initTriggerChange: {
type: Boolean,
default: _gc('initTriggerChange',false)
}
},
mounted() {
this.updateSubviewLayout();
},
watch: {
current: {
handler(newVal) {
this.currentChanged && this._lockDx();
this.currentIndex = newVal;
this._preUpdateDotPosition(this.currentIndex);
if (this.initTriggerChange) {
if (newVal < this.list.length) {
this.$emit('change', newVal, this.list[newVal][this.valueKey]);
}else {
this.changeTriggerFailed = true;
}
}
this.currentChanged = true;
},
immediate: true
},
list: {
handler(newVal) {
this._handleListChange(newVal);
},
immediate: false
},
bottomDotX(newVal) {
if(newVal >= 0){
// #ifndef APP-NVUE
this.showBottomDot = true;
// #endif
this.$nextTick(() => {
// #ifdef APP-NVUE
weexAnimation.transition(this.$refs['z-tabs-bottom-dot'], {
styles: {
transform: `translateX(${newVal}px)`
},
duration: this.showAnimate ? 200 : 0,
delay: 0
})
setTimeout(() => {
this.showBottomDot = true;
},10)
// #endif
})
}
},
finalBarWidth: {
handler(newVal) {
this.barCalcedWidth = newVal;
this.pxBarWidth = this.barCalcedWidth;
},
immediate: true
},
currentIndex: {
handler(newVal) {
this.currentSwiperIndex = newVal;
},
immediate: true
}
},
computed: {
shouldScroll(){
return this.list.length > this.scrollCount;
},
finalTabsHeight(){
return this.tabsHeight;
},
tabStyle(){
const stl = this.shouldScroll ? {'flex-shrink': 0} : {'flex': 1};
if(this.finalTabWidth > 0){
stl['width'] = this.finalTabWidth + 'px';
}else{
delete stl.width;
}
return stl;
},
tabsListStyle(){
return this.shouldScroll ? {} : {'flex':1};
},
showAnimate(){
return this.isFirstLoaded && !this.shouldSetDx;
},
dotTransition(){
return this.showAnimate ? 'transform .2s linear':'none';
},
finalDotStyle(){
return {...this.barStyle, width: this.barCalcedWidth + 'px', height: this.finalBarHeight + 'px', opacity: this.showBottomDot ? 1 : 0};
},
finalTabWidth(){
return this._convertTextToPx(this.tabWidth);
},
finalBarWidth(){
return this._convertTextToPx(this.barWidth);
},
finalBarHeight(){
return this._convertTextToPx(this.barHeight);
},
finalBottomSpace(){
return this._convertTextToPx(this.bottomSpace);
}
},
methods: {
//根据swiper的@transition实时更新底部dot位置
setDx(dx) {
if (!this.shouldSetDx) return;
const isLineMode = this.barAnimateMode === 'line';
const isWormMode = this.barAnimateMode === 'worm';
let dxRate = dx / this.tabsSuperWidth;
this.currentSwiperIndex = this.currentIndex + parseInt(dxRate);
const isRight = dxRate > 0;
const barWidth = this.pxBarWidth;
if(this.currentSwiperIndex !== this.currentIndex){
dxRate = dxRate - (this.currentSwiperIndex - this.currentIndex);
const currentNode = this.itemNodeInfos[this.currentSwiperIndex];
if (!!currentNode){
this.bottomDotXForIndex = this._getBottomDotX(currentNode, barWidth);
}
}
const currentIndex = this.currentSwiperIndex;
let nextIndex = currentIndex + (isRight ? 1 : -1);
nextIndex = Math.max(0, nextIndex);
nextIndex = Math.min(nextIndex, this.itemNodeInfos.length - 1);
const currentNodeInfo = this.itemNodeInfos[currentIndex];
const nextNodeInfo = this.itemNodeInfos[nextIndex];
const nextBottomX = nextNodeInfo ? this._getBottomDotX(nextNodeInfo, barWidth) : 0;
if (isLineMode){
this.bottomDotX = this.bottomDotXForIndex + (nextBottomX - this.bottomDotXForIndex) * Math.abs(dxRate);
} else if (isWormMode) {
if ((isRight && currentIndex >= this.itemNodeInfos.length - 1) || (!isRight && currentIndex <= 0)) return;
const spaceOffset = isRight ? nextNodeInfo.right - currentNodeInfo.left : currentNodeInfo.right - nextNodeInfo.left;
let barCalcedWidth = barWidth + spaceOffset * Math.abs(dxRate);
if (isRight) {
if (barCalcedWidth > nextBottomX - this.bottomDotX + barWidth) {
const barMinusWidth = barWidth + spaceOffset * (1 - dxRate);
this.bottomDotX = this.bottomDotXForIndex + (barCalcedWidth - barMinusWidth) / 2;
barCalcedWidth = barMinusWidth;
}
}else if (!isRight) {
if (barCalcedWidth > this.bottomDotXForIndex + barWidth - nextBottomX){
const barMinusWidth = barWidth + spaceOffset * (1 + dxRate);
barCalcedWidth = barMinusWidth;
this.bottomDotX = nextBottomX;
} else{
this.bottomDotX = this.bottomDotXForIndex - (barCalcedWidth - barWidth);
}
}
barCalcedWidth = Math.max(barCalcedWidth, barWidth);
this.barCalcedWidth = barCalcedWidth;
}
},
//在swiper的@animationfinish中通知z-tabs结束多setDx的锁定,若在父组件中调用了setDx,则必须调用unlockDx
unlockDx() {
this.$nextTick(() => {
this.shouldSetDx = true;
})
},
//更新z-tabs内部布局
updateSubviewLayout(tryCount = 0) {
this.$nextTick(() => {
let delayTime = 10;
// #ifdef APP-NVUE || MP-BAIDU
delayTime = 50;
// #endif
setTimeout(() => {
this._getNodeClientRect('.z-tabs-scroll-view-conatiner').then(res=>{
if (res){
if (!res[0].width && tryCount < 10) {
setTimeout(() => {
tryCount ++;
this.updateSubviewLayout(tryCount);
}, 50);
return;
}
this.tabsWidth = res[0].width;
this.tabsHeight = res[0].height;
this.tabsLeft = res[0].left;
this._handleListChange(this.list);
}
})
this._getNodeClientRect('.z-tabs-conatiner').then(res=>{
if(res && res[0].width){
this.tabsSuperWidth = res[0].width;
}
})
},delayTime)
})
},
//点击了tabs
tabsClick(index,item) {
if (item.disabled) return;
if (this.currentIndex != index) {
this.shouldSetDx = false;
this.$emit('change', index, item[this.valueKey]);
this.currentIndex = index;
this._preUpdateDotPosition(index);
} else {
this.$emit('secondClick',index, item[this.valueKey]);
}
},
//scroll-view滚动
scroll(e){
this.currentScrollLeft = e.detail.scrollLeft;
},
//锁定dx,用于避免在swiper被动触发滚动时候执行setDx中的代码
_lockDx() {
this.shouldSetDx = false;
},
//更新底部dot位置之前的预处理
_preUpdateDotPosition(index) {
// #ifndef APP-NVUE
this.$nextTick(() => {
uni.createSelectorQuery().in(this).select(".z-tabs-scroll-view").fields({
scrollOffset: true
}, data => {
if (data) {
this.currentScrollLeft = data.scrollLeft;
this._updateDotPosition(index);
} else {
this._updateDotPosition(index);
}
}).exec();
})
// #endif
// #ifdef APP-NVUE
this._updateDotPosition(index);
// #endif
},
//更新底部dot位置
_updateDotPosition(index){
if(index >= this.itemNodeInfos.length) return;
this.$nextTick(async ()=>{
let node = this.itemNodeInfos[index];
let offset = 0;
let tabsContainerWidth = this.tabsContainerWidth;
if (JSON.stringify(this.activeStyle) !== '{}') {
const nodeRes = await this._getNodeClientRect(`#z-tabs-item-${index}`,true);
if (nodeRes) {
node = nodeRes[0];
offset = this.currentScrollLeft;
this.tabsHeight = Math.max(node.height + uni.upx2px(28), this.tabsHeight);
tabsContainerWidth = 0;
for(let i = 0;i < this.itemNodeInfos.length;i++){
let oldNode = this.itemNodeInfos[i];
tabsContainerWidth += i === index ? node.width : oldNode.width;
}
}
}
this.bottomDotX = this._getBottomDotX(node, this.finalBarWidth, offset);
this.bottomDotXForIndex = this.bottomDotX;
if (this.tabsWidth) {
setTimeout(()=>{
let scrollLeft = this.bottomDotX - this.tabsWidth / 2 + this.finalBarWidth / 2;
scrollLeft = Math.max(0,scrollLeft);
if (tabsContainerWidth) {
scrollLeft = Math.min(scrollLeft,tabsContainerWidth - this.tabsWidth + 10);
}
if (this.shouldScroll && tabsContainerWidth > this.tabsWidth) {
this.scrollLeft = scrollLeft;
}
this.$nextTick(()=>{
this.isFirstLoaded = true;
})
},200)
}
})
},
// 处理list改变
_handleListChange(newVal) {
this.$nextTick(async ()=>{
if(newVal.length){
let itemNodeInfos = [];
let tabsContainerWidth = 0;
let delayTime = 0;
// #ifdef MP-BAIDU
delayTime = 100;
// #endif
setTimeout(async()=>{
for(let i = 0;i < newVal.length;i++){
const nodeRes = await this._getNodeClientRect(`#z-tabs-item-${i}`,true);
if(nodeRes){
const node = nodeRes[0];
node.left += this.currentScrollLeft;
itemNodeInfos.push(node);
tabsContainerWidth += node.width;
}
if (i === this.currentIndex){
this.itemNodeInfos = itemNodeInfos;
this.tabsContainerWidth = tabsContainerWidth;
this._updateDotPosition(this.currentIndex);
}
}
this.itemNodeInfos = itemNodeInfos;
this.tabsContainerWidth = tabsContainerWidth;
this._updateDotPosition(this.currentIndex);
},delayTime)
}
})
if (this.initTriggerChange && this.changeTriggerFailed && newVal.length) {
if (this.current < newVal.length) {
this.$emit('change', this.current, newVal[this.current][this.valueKey]);
}
}
},
//根据node获取bottomX
_getBottomDotX(node, barWidth = this.finalBarWidth, offset = 0){
return node.left + node.width / 2 - barWidth / 2 + offset - this.tabsLeft;
},
//获取节点信息
_getNodeClientRect(select, withRefArr = false) {
// #ifdef APP-NVUE
select = select.replace('.', '').replace('#', '');
const ref = withRefArr ? this.$refs[select][0] : this.$refs[select];
return new Promise((resolve, reject) => {
if (ref) {
weexDom.getComponentRect(ref, option => {
if (option && option.result) {
resolve([option.size]);
} else resolve(false);
})
} else resolve(false);
});
return;
// #endif
const res = uni.createSelectorQuery().in(this);
res.select(select).boundingClientRect();
return new Promise((resolve, reject) => {
res.exec(data => {
resolve((data && data != '' && data != undefined && data.length) ? data : false);
});
});
},
//格式化badge中的count
_formatCount(count) {
if (!count) return '';
if (count > this.badgeMaxCount) {
return this.badgeMaxCount + '+';
}
return count.toString();
},
//将文本的px或者rpx转为px的值
_convertTextToPx(text) {
const dataType = Object.prototype.toString.call(text);
if (dataType === '[object Number]') {
return uni.upx2px(text);
}
let isRpx = false;
if (text.indexOf('rpx') !== -1 || text.indexOf('upx') !== -1) {
text = text.replace('rpx', '').replace('upx', '');
isRpx = true;
} else if (text.indexOf('px') !== -1) {
text = text.replace('px', '');
} else {
text = uni.upx2px(text);
}
if (!isNaN(text)) {
if (isRpx) return Number(uni.upx2px(text));
return Number(text);
}
return 0;
}
}
}
</script>
<style scoped>
.z-tabs-conatiner{
/* #ifndef APP-NVUE */
overflow: hidden;
display: flex;
width: 100%;
/* #endif */
/* #ifdef APP-NVUE */
width: 750rpx;
/* #endif */
flex-direction: row;
height: 80rpx;
}
.z-tabs-scroll-view-conatiner{
flex: 1;
position: relative;
/* #ifndef APP-NVUE */
display: flex;
height: 100%;
width: 100%;
/* #endif */
flex-direction: row;
}
/* #ifndef APP-NVUE */
.z-tabs-scroll-view ::-webkit-scrollbar {
display: none;
-webkit-appearance: none;
width: 0 !important;
height: 0 !important;
background: transparent;
}
/* #endif */
.z-tabs-scroll-view{
flex-direction: row;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
/* #ifndef APP-NVUE */
width: 100%;
height: 100%;
/* #endif */
flex: 1;
}
.z-tabs-list-container{
position: relative;
/* #ifndef APP-NVUE */
height: 100%;
/* #endif */
}
.z-tabs-list,.z-tabs-list-container{
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
}
.z-tabs-item{
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
justify-content: center;
align-items: center;
padding: 0px 20rpx;
}
.z-tabs-item-title-container{
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
align-items: center;
}
.z-tabs-item-title{
font-size: 30rpx;
}
.z-tabs-item-title-disabled{
/* #ifndef APP-NVUE */
cursor: not-allowed;
/* #endif */
}
.z-tabs-item-badge{
margin-left: 8rpx;
background-color: #ec5b56;
color: white;
font-size: 22rpx;
border-radius: 100px;
padding: 0rpx 10rpx;
}
.z-tabs-bottom{
position: absolute;
bottom: 0;
left: 0;
right: 0;
}
.z-tabs-bottom-dot{
border-radius: 100px;
}
.z-tabs-left,.z-tabs-right{
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
align-items: center;
}
</style>