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425 lines
17 KiB
425 lines
17 KiB
3 years ago
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<template>
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<view class="mescroll-uni-warp">
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<scroll-view :id="viewId" class="mescroll-uni" :class="{'mescroll-uni-fixed':isFixed}" :style="{'height':scrollHeight,'padding-top':padTop,'padding-bottom':padBottom,'top':fixedTop,'bottom':fixedBottom}" :scroll-top="scrollTop" :scroll-with-animation="scrollAnim" @scroll="scroll" :scroll-y='scrollable' :enable-back-to-top="true" :throttle="false">
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<view class="mescroll-uni-content mescroll-render-touch"
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@touchstart="wxsBiz.touchstartEvent"
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@touchmove="wxsBiz.touchmoveEvent"
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@touchend="wxsBiz.touchendEvent"
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@touchcancel="wxsBiz.touchendEvent"
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:change:prop="wxsBiz.propObserver"
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:prop="wxsProp">
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<!-- 状态栏 -->
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<view v-if="topbar&&statusBarHeight" class="mescroll-topbar" :style="{height: statusBarHeight+'px', background: topbar}"></view>
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<view class="mescroll-wxs-content" :style="{'transform': translateY, 'transition': transition}" :change:prop="wxsBiz.callObserver" :prop="callProp">
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<!-- 下拉加载区域 (支付宝小程序子组件传参给子子组件仍报单项数据流的异常,暂时不通过mescroll-down组件实现)-->
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<!-- <mescroll-down :option="mescroll.optDown" :type="downLoadType" :rate="downRate"></mescroll-down> -->
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<view v-if="mescroll.optDown.use" class="mescroll-downwarp" :style="{'background':mescroll.optDown.bgColor,'color':mescroll.optDown.textColor}">
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<view class="downwarp-content">
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<view class="downwarp-progress mescroll-wxs-progress" :class="{'mescroll-rotate': isDownLoading}" :style="{'border-color':mescroll.optDown.textColor, 'transform': downRotate}"></view>
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<view class="downwarp-tip">{{downText}}</view>
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</view>
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</view>
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<!-- 列表内容 -->
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<slot></slot>
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<!-- 空布局 -->
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<mescroll-empty v-if="isShowEmpty" :option="mescroll.optUp.empty" @emptyclick="emptyClick"></mescroll-empty>
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<!-- 上拉加载区域 (下拉刷新时不显示, 支付宝小程序子组件传参给子子组件仍报单项数据流的异常,暂时不通过mescroll-up组件实现)-->
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<!-- <mescroll-up v-if="mescroll.optUp.use && !isDownLoading && upLoadType!==3" :option="mescroll.optUp" :type="upLoadType"></mescroll-up> -->
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<view v-if="mescroll.optUp.use && !isDownLoading && upLoadType!==3" class="mescroll-upwarp" :style="{'background':mescroll.optUp.bgColor,'color':mescroll.optUp.textColor}">
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<!-- 加载中 (此处不能用v-if,否则android小程序快速上拉可能会不断触发上拉回调) -->
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<view v-show="upLoadType===1">
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<view class="upwarp-progress mescroll-rotate" :style="{'border-color':mescroll.optUp.textColor}"></view>
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<view class="upwarp-tip">{{ mescroll.optUp.textLoading }}</view>
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</view>
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<!-- 无数据 -->
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<view v-if="upLoadType===2" class="upwarp-nodata">{{ mescroll.optUp.textNoMore }}</view>
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</view>
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</view>
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<!-- 底部是否偏移TabBar的高度(默认仅在H5端的tab页生效) -->
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<!-- #ifdef H5 -->
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<view v-if="bottombar && windowBottom>0" class="mescroll-bottombar" :style="{height: windowBottom+'px'}"></view>
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<!-- #endif -->
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<!-- 适配iPhoneX -->
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<view v-if="safearea" class="mescroll-safearea"></view>
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</view>
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</scroll-view>
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<!-- 回到顶部按钮 (fixed元素,需写在scroll-view外面,防止滚动的时候抖动)-->
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<mescroll-top v-model="isShowToTop" :option="mescroll.optUp.toTop" @click="toTopClick"></mescroll-top>
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<!-- #ifdef MP-WEIXIN || MP-QQ || APP-PLUS || H5 -->
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<!-- renderjs的数据载体,不可写在mescroll-downwarp内部,避免use为false时,载体丢失,无法更新数据 -->
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<view :change:prop="renderBiz.propObserver" :prop="wxsProp"></view>
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<!-- #endif -->
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</view>
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</template>
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<!-- 微信小程序, QQ小程序, app, h5使用wxs -->
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<!-- #ifdef MP-WEIXIN || MP-QQ || APP-PLUS || H5 -->
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<script src="./wxs/wxs.wxs" module="wxsBiz" lang="wxs"></script>
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<!-- #endif -->
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<!-- app, h5使用renderjs -->
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<!-- #ifdef APP-PLUS || H5 -->
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<script module="renderBiz" lang="renderjs">
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import renderBiz from './wxs/renderjs.js';
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export default {
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mixins:[renderBiz]
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}
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</script>
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<!-- #endif -->
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<script>
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// 引入mescroll-uni.js,处理核心逻辑
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import MeScroll from './mescroll-uni.js';
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// 引入全局配置
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import GlobalOption from './mescroll-uni-option.js';
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// 引入空布局组件
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import MescrollEmpty from './components/mescroll-empty.vue';
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// 引入回到顶部组件
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import MescrollTop from './components/mescroll-top.vue';
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// 引入兼容wxs(含renderjs)写法的mixins
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import WxsMixin from './wxs/mixins.js';
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export default {
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mixins: [WxsMixin],
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components: {
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MescrollEmpty,
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MescrollTop
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},
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data() {
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return {
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mescroll: {optDown:{},optUp:{}}, // mescroll实例
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viewId: 'id_' + Math.random().toString(36).substr(2,16), // 随机生成mescroll的id(不能数字开头,否则找不到元素)
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downHight: 0, //下拉刷新: 容器高度
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downRate: 0, // 下拉比率(inOffset: rate<1; outOffset: rate>=1)
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downLoadType: 0, // 下拉刷新状态: 0(loading前), 1(inOffset), 2(outOffset), 3(showLoading), 4(endDownScroll)
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upLoadType: 0, // 上拉加载状态: 0(loading前), 1loading中, 2没有更多了,显示END文本提示, 3(没有更多了,不显示END文本提示)
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isShowEmpty: false, // 是否显示空布局
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isShowToTop: false, // 是否显示回到顶部按钮
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scrollTop: 0, // 滚动条的位置
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scrollAnim: false, // 是否开启滚动动画
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windowTop: 0, // 可使用窗口的顶部位置
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windowBottom: 0, // 可使用窗口的底部位置
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windowHeight: 0, // 可使用窗口的高度
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statusBarHeight: 0 // 状态栏高度
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}
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},
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props: {
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down: Object, // 下拉刷新的参数配置
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up: Object, // 上拉加载的参数配置
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top: [String, Number], // 下拉布局往下的偏移量 (支持20, "20rpx", "20px", "20%"格式的值, 其中纯数字则默认单位rpx, 百分比则相对于windowHeight)
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topbar: [Boolean, String], // top的偏移量是否加上状态栏高度, 默认false (使用场景:取消原生导航栏时,配置此项可留出状态栏的占位, 支持传入字符串背景,如色值,背景图,渐变)
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bottom: [String, Number], // 上拉布局往上的偏移量 (支持20, "20rpx", "20px", "20%"格式的值, 其中纯数字则默认单位rpx, 百分比则相对于windowHeight)
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safearea: Boolean, // bottom的偏移量是否加上底部安全区的距离, 默认false (需要适配iPhoneX时使用)
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fixed: { // 是否通过fixed固定mescroll的高度, 默认true
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type: Boolean,
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default: true
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},
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height: [String, Number], // 指定mescroll的高度, 此项有值,则不使用fixed. (支持20, "20rpx", "20px", "20%"格式的值, 其中纯数字则默认单位rpx, 百分比则相对于windowHeight)
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bottombar:{ // 底部是否偏移TabBar的高度(默认仅在H5端的tab页生效)
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type: Boolean,
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default: true
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}
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},
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computed: {
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// 是否使用fixed定位 (当height有值,则不使用)
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isFixed(){
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return !this.height && this.fixed
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},
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// mescroll的高度
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scrollHeight(){
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if (this.isFixed) {
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return "auto"
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} else if(this.height){
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return this.toPx(this.height) + 'px'
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}else{
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return "100%"
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}
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},
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// 下拉布局往下偏移的距离 (px)
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numTop() {
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return this.toPx(this.top)
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},
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fixedTop() {
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return this.isFixed ? (this.numTop + this.windowTop) + 'px' : 0
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},
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padTop() {
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return !this.isFixed ? this.numTop + 'px' : 0
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},
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// 上拉布局往上偏移 (px)
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numBottom() {
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return this.toPx(this.bottom)
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},
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fixedBottom() {
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return this.isFixed ? (this.numBottom + this.windowBottom) + 'px' : 0
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},
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padBottom() {
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return !this.isFixed ? this.numBottom + 'px' : 0
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},
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// 是否为重置下拉的状态
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isDownReset(){
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return this.downLoadType===3 || this.downLoadType===4
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},
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// 过渡
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transition() {
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return this.isDownReset ? 'transform 300ms' : '';
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},
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translateY() {
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return this.downHight > 0 ? 'translateY(' + this.downHight + 'px)' : ''; // transform会使fixed失效,需注意把fixed元素写在mescroll之外
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},
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// 列表是否可滑动
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scrollable(){
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return this.downLoadType===0 || this.isDownReset
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},
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// 是否在加载中
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isDownLoading(){
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return this.downLoadType === 3
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},
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// 旋转的角度
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downRotate(){
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return 'rotate(' + 360 * this.downRate + 'deg)'
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},
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// 文本提示
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downText(){
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if(!this.mescroll) return ""; // 避免头条小程序初始化时报错
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switch (this.downLoadType){
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case 1: return this.mescroll.optDown.textInOffset;
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case 2: return this.mescroll.optDown.textOutOffset;
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case 3: return this.mescroll.optDown.textLoading;
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case 4: return this.mescroll.isDownEndSuccess ? this.mescroll.optDown.textSuccess : this.mescroll.isDownEndSuccess==false ? this.mescroll.optDown.textErr : this.mescroll.optDown.textInOffset;
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default: return this.mescroll.optDown.textInOffset;
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}
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}
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},
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methods: {
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//number,rpx,upx,px,% --> px的数值
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toPx(num){
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if(typeof num === "string"){
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if (num.indexOf('px') !== -1) {
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if(num.indexOf('rpx') !== -1) { // "10rpx"
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num = num.replace('rpx', '');
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} else if(num.indexOf('upx') !== -1) { // "10upx"
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num = num.replace('upx', '');
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} else { // "10px"
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return Number(num.replace('px', ''))
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}
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}else if (num.indexOf('%') !== -1){
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// 传百分比,则相对于windowHeight,传"10%"则等于windowHeight的10%
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let rate = Number(num.replace("%","")) / 100
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return this.windowHeight * rate
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}
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}
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return num ? uni.upx2px(Number(num)) : 0
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},
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//注册列表滚动事件,用于下拉刷新和上拉加载
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scroll(e) {
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this.mescroll.scroll(e.detail, () => {
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this.$emit('scroll', this.mescroll) // 此时可直接通过 this.mescroll.scrollTop获取滚动条位置; this.mescroll.isScrollUp获取是否向上滑动
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})
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},
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// 点击空布局的按钮回调
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emptyClick() {
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this.$emit('emptyclick', this.mescroll)
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},
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// 点击回到顶部的按钮回调
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toTopClick() {
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this.mescroll.scrollTo(0, this.mescroll.optUp.toTop.duration); // 执行回到顶部
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this.$emit('topclick', this.mescroll); // 派发点击回到顶部按钮的回调
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},
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// 更新滚动区域的高度 (使内容不满屏和到底,都可继续翻页)
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setClientHeight() {
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if (this.mescroll.getClientHeight(true) === 0 && !this.isExec) {
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this.isExec = true; // 避免多次获取
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this.$nextTick(() => { // 确保dom已渲染
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this.getClientInfo(data=>{
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this.isExec = false;
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if (data) {
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this.mescroll.setClientHeight(data.height);
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} else if (this.clientNum != 3) { // 极少部分情况,可能dom还未渲染完毕,递归获取,最多重试3次
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this.clientNum = this.clientNum == null ? 1 : this.clientNum + 1;
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setTimeout(() => {
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this.setClientHeight()
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}, this.clientNum * 100)
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}
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})
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})
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}
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},
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// 获取滚动区域的信息
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getClientInfo(success){
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let query = uni.createSelectorQuery();
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// #ifndef MP-ALIPAY || MP-DINGTALK
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query = query.in(this) // 支付宝小程序不支持in(this),而字节跳动小程序必须写in(this), 否则都取不到值
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// #endif
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let view = query.select('#' + this.viewId);
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view.boundingClientRect(data => {
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success(data)
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}).exec();
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}
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},
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// 使用created初始化mescroll对象; 如果用mounted部分css样式编译到H5会失效
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created() {
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let vm = this;
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let diyOption = {
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// 下拉刷新的配置
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down: {
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inOffset() {
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vm.downLoadType = 1; // 下拉的距离进入offset范围内那一刻的回调 (自定义mescroll组件时,此行不可删)
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},
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outOffset() {
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vm.downLoadType = 2; // 下拉的距离大于offset那一刻的回调 (自定义mescroll组件时,此行不可删)
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},
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onMoving(mescroll, rate, downHight) {
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// 下拉过程中的回调,滑动过程一直在执行;
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vm.downHight = downHight; // 设置下拉区域的高度 (自定义mescroll组件时,此行不可删)
|
||
|
|
vm.downRate = rate; //下拉比率 (inOffset: rate<1; outOffset: rate>=1)
|
||
|
|
},
|
||
|
|
showLoading(mescroll, downHight) {
|
||
|
|
vm.downLoadType = 3; // 显示下拉刷新进度的回调 (自定义mescroll组件时,此行不可删)
|
||
|
|
vm.downHight = downHight; // 设置下拉区域的高度 (自定义mescroll组件时,此行不可删)
|
||
|
|
},
|
||
|
|
beforeEndDownScroll(mescroll){
|
||
|
|
vm.downLoadType = 4;
|
||
|
|
return mescroll.optDown.beforeEndDelay // 延时结束的时长
|
||
|
|
},
|
||
|
|
endDownScroll() {
|
||
|
|
vm.downLoadType = 4; // 结束下拉 (自定义mescroll组件时,此行不可删)
|
||
|
|
vm.downHight = 0; // 设置下拉区域的高度 (自定义mescroll组件时,此行不可删)
|
||
|
|
vm.downResetTimer && clearTimeout(vm.downResetTimer)
|
||
|
|
vm.downResetTimer = setTimeout(()=>{ // 过渡动画执行完毕后,需重置为0的状态,以便置空this.transition,避免iOS小程序列表渲染不完整
|
||
|
|
if(vm.downLoadType===4) vm.downLoadType = 0
|
||
|
|
},300)
|
||
|
|
},
|
||
|
|
// 派发下拉刷新的回调
|
||
|
|
callback: function(mescroll) {
|
||
|
|
vm.$emit('down', mescroll)
|
||
|
|
}
|
||
|
|
},
|
||
|
|
// 上拉加载的配置
|
||
|
|
up: {
|
||
|
|
// 显示加载中的回调
|
||
|
|
showLoading() {
|
||
|
|
vm.upLoadType = 1;
|
||
|
|
},
|
||
|
|
// 显示无更多数据的回调
|
||
|
|
showNoMore() {
|
||
|
|
vm.upLoadType = 2;
|
||
|
|
},
|
||
|
|
// 隐藏上拉加载的回调
|
||
|
|
hideUpScroll(mescroll) {
|
||
|
|
vm.upLoadType = mescroll.optUp.hasNext ? 0 : 3;
|
||
|
|
},
|
||
|
|
// 空布局
|
||
|
|
empty: {
|
||
|
|
onShow(isShow) { // 显示隐藏的回调
|
||
|
|
vm.isShowEmpty = isShow;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
// 回到顶部
|
||
|
|
toTop: {
|
||
|
|
onShow(isShow) { // 显示隐藏的回调
|
||
|
|
vm.isShowToTop = isShow;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
// 派发上拉加载的回调
|
||
|
|
callback: function(mescroll) {
|
||
|
|
vm.$emit('up', mescroll);
|
||
|
|
// 更新容器的高度 (多mescroll的情况)
|
||
|
|
vm.setClientHeight()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
MeScroll.extend(diyOption, GlobalOption); // 混入全局的配置
|
||
|
|
let myOption = JSON.parse(JSON.stringify({'down': vm.down,'up': vm.up})) // 深拷贝,避免对props的影响
|
||
|
|
MeScroll.extend(myOption, diyOption); // 混入具体界面的配置
|
||
|
|
|
||
|
|
// 初始化MeScroll对象
|
||
|
|
vm.mescroll = new MeScroll(myOption);
|
||
|
|
vm.mescroll.viewId = vm.viewId; // 附带id
|
||
|
|
// init回调mescroll对象
|
||
|
|
vm.$emit('init', vm.mescroll);
|
||
|
|
|
||
|
|
// 设置高度
|
||
|
|
const sys = uni.getSystemInfoSync();
|
||
|
|
if(sys.windowTop) vm.windowTop = sys.windowTop;
|
||
|
|
if(sys.windowBottom) vm.windowBottom = sys.windowBottom;
|
||
|
|
if(sys.windowHeight) vm.windowHeight = sys.windowHeight;
|
||
|
|
if(sys.statusBarHeight) vm.statusBarHeight = sys.statusBarHeight;
|
||
|
|
// 使down的bottomOffset生效
|
||
|
|
vm.mescroll.setBodyHeight(sys.windowHeight);
|
||
|
|
|
||
|
|
// 因为使用的是scrollview,这里需自定义scrollTo
|
||
|
|
vm.mescroll.resetScrollTo((y, t) => {
|
||
|
|
vm.scrollAnim = (t !== 0); // t为0,则不使用动画过渡
|
||
|
|
if(typeof y === 'string'){
|
||
|
|
// 小程序不支持slot里面的scroll-into-view, 统一使用计算的方式实现
|
||
|
|
vm.getClientInfo(function(rect){
|
||
|
|
let mescrollTop = rect.top // mescroll到顶部的距离
|
||
|
|
let selector;
|
||
|
|
if(y.indexOf('#')==-1 && y.indexOf('.')==-1){
|
||
|
|
selector = '#'+y // 不带#和. 则默认为id选择器
|
||
|
|
}else{
|
||
|
|
selector = y
|
||
|
|
// #ifdef APP-PLUS || H5 || MP-ALIPAY || MP-DINGTALK
|
||
|
|
if(y.indexOf('>>>')!=-1){ // 不支持跨自定义组件的后代选择器 (转为普通的选择器即可跨组件查询)
|
||
|
|
selector = y.split('>>>')[1].trim()
|
||
|
|
}
|
||
|
|
// #endif
|
||
|
|
}
|
||
|
|
uni.createSelectorQuery().select(selector).boundingClientRect(function(rect){
|
||
|
|
if (rect) {
|
||
|
|
let curY = vm.mescroll.getScrollTop()
|
||
|
|
let top = rect.top - mescrollTop
|
||
|
|
top += curY
|
||
|
|
if(!vm.isFixed) top -= vm.numTop
|
||
|
|
vm.scrollTop = curY;
|
||
|
|
vm.$nextTick(function() {
|
||
|
|
vm.scrollTop = top
|
||
|
|
})
|
||
|
|
} else{
|
||
|
|
console.error(selector + ' does not exist');
|
||
|
|
}
|
||
|
|
}).exec()
|
||
|
|
})
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
let curY = vm.mescroll.getScrollTop()
|
||
|
|
if (t === 0 || t === 300) { // 当t使用默认配置的300时,则使用系统自带的动画过渡
|
||
|
|
vm.scrollTop = curY;
|
||
|
|
vm.$nextTick(function() {
|
||
|
|
vm.scrollTop = y
|
||
|
|
})
|
||
|
|
} else {
|
||
|
|
vm.mescroll.getStep(curY, y, step => { // 此写法可支持配置t
|
||
|
|
vm.scrollTop = step
|
||
|
|
}, t)
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
// 具体的界面如果不配置up.toTop.safearea,则取本vue的safearea值
|
||
|
|
if (vm.up && vm.up.toTop && vm.up.toTop.safearea != null) {} else {
|
||
|
|
vm.mescroll.optUp.toTop.safearea = vm.safearea;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
mounted() {
|
||
|
|
// 设置容器的高度
|
||
|
|
this.setClientHeight()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<style>
|
||
|
|
@import "./mescroll-uni.css";
|
||
|
|
@import "./components/mescroll-down.css";
|
||
|
|
@import './components/mescroll-up.css';
|
||
|
|
</style>
|