cshenfu
2024-06-27 58aa6e282bb343503be3cb198948328ea3ed7b79
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// [z-paging]下拉刷新view模块
import u from '.././z-paging-utils'
import c from '.././z-paging-constant'
import Enum from '.././z-paging-enum'
 
const ZPRefresher = {
    props: {
        //下拉刷新的主题样式,支持black,white,默认black
        refresherThemeStyle: {
            type: String,
            default: function() {
                return u.gc('refresherThemeStyle', '');
            }
        },
        //自定义下拉刷新中左侧图标的样式
        refresherImgStyle: {
            type: Object,
            default: function() {
                return u.gc('refresherImgStyle', {});
            }
        },
        //自定义下拉刷新中右侧状态描述文字的样式
        refresherTitleStyle: {
            type: Object,
            default: function() {
                return u.gc('refresherTitleStyle', {});
            }
        },
        //自定义下拉刷新中右侧最后更新时间文字的样式(show-refresher-update-time为true时有效)
        refresherUpdateTimeStyle: {
            type: Object,
            default: function() {
                return u.gc('refresherUpdateTimeStyle', {});
            }
        },
        //在微信小程序和QQ小程序中,是否实时监听下拉刷新中进度,默认为否
        watchRefresherTouchmove: {
            type: Boolean,
            default: u.gc('watchRefresherTouchmove', false)
        },
        //底部加载更多的主题样式,支持black,white,默认black
        loadingMoreThemeStyle: {
            type: String,
            default: function() {
                return u.gc('loadingMoreThemeStyle', '');
            }
        },
        //是否只使用下拉刷新,设置为true后将关闭mounted自动请求数据、关闭滚动到底部加载更多,强制隐藏空数据图。默认为否
        refresherOnly: {
            type: Boolean,
            default: u.gc('refresherOnly', false)
        },
        //自定义下拉刷新结束以后延迟回弹的时间,单位为毫秒,默认为0
        refresherCompleteDelay: {
            type: [Number, String],
            default: u.gc('refresherCompleteDelay', 0)
        },
        //自定义下拉刷新结束回弹动画时间,单位为毫秒,默认为300毫秒(refresherEndBounceEnabled为false时,refresherCompleteDuration为设定值的1/3),nvue无效
        refresherCompleteDuration: {
            type: [Number, String],
            default: u.gc('refresherCompleteDuration', 300)
        },
        //自定义下拉刷新结束状态下是否允许列表滚动,默认为否
        refresherCompleteScrollable: {
            type: Boolean,
            default: u.gc('refresherCompleteScrollable', false)
        },
        //是否使用自定义的下拉刷新,默认为是,即使用z-paging的下拉刷新。设置为false即代表使用uni scroll-view自带的下拉刷新,h5、App、微信小程序以外的平台不支持uni scroll-view自带的下拉刷新
        useCustomRefresher: {
            type: Boolean,
            default: u.gc('useCustomRefresher', true)
        },
        //自定义下拉刷新下拉帧率,默认为40,过高可能会出现抖动问题
        refresherFps: {
            type: [Number, String],
            default: u.gc('refresherFps', 40)
        },
        //自定义下拉刷新允许触发的最大下拉角度,默认为40度,当下拉角度小于设定值时,自定义下拉刷新动画不会被触发
        refresherMaxAngle: {
            type: [Number, String],
            default: u.gc('refresherMaxAngle', 40)
        },
        //自定义下拉刷新的角度由未达到最大角度变到达到最大角度时,是否继续下拉刷新手势,默认为否
        refresherAngleEnableChangeContinued: {
            type: Boolean,
            default: u.gc('refresherAngleEnableChangeContinued', false)
        },
        //自定义下拉刷新默认状态下的文字
        refresherDefaultText: {
            type: [String, Object],
            default: u.gc('refresherDefaultText', null)
        },
        //自定义下拉刷新松手立即刷新状态下的文字
        refresherPullingText: {
            type: [String, Object],
            default: u.gc('refresherPullingText', null)
        },
        //自定义下拉刷新刷新中状态下的文字
        refresherRefreshingText: {
            type: [String, Object],
            default: u.gc('refresherRefreshingText', null)
        },
        //自定义下拉刷新刷新结束状态下的文字
        refresherCompleteText: {
            type: [String, Object],
            default: u.gc('refresherCompleteText', null)
        },
        //是否开启自定义下拉刷新刷新结束回弹效果,默认为是
        refresherEndBounceEnabled: {
            type: Boolean,
            default: u.gc('refresherEndBounceEnabled', true)
        },
        //是否开启自定义下拉刷新,默认为是
        refresherEnabled: {
            type: Boolean,
            default: u.gc('refresherEnabled', true)
        },
        //设置自定义下拉刷新阈值,默认为80rpx
        refresherThreshold: {
            type: [Number, String],
            default: u.gc('refresherThreshold', '80rpx')
        },
        //设置系统下拉刷新默认样式,支持设置 black,white,none,none 表示不使用默认样式,默认为black
        refresherDefaultStyle: {
            type: String,
            default: u.gc('refresherDefaultStyle', 'black')
        },
        //设置自定义下拉刷新区域背景
        refresherBackground: {
            type: String,
            default: u.gc('refresherBackground', 'transparent')
        },
        //设置固定的自定义下拉刷新区域背景
        refresherFixedBackground: {
            type: String,
            default: u.gc('refresherFixedBackground', 'transparent')
        },
        //设置固定的自定义下拉刷新区域高度,默认为0
        refresherFixedBacHeight: {
            type: [Number, String],
            default: u.gc('refresherFixedBacHeight', 0)
        },
        //设置自定义下拉刷新下拉超出阈值后继续下拉位移衰减的比例,范围0-1,值越大代表衰减越多。默认为0.7(nvue无效)
        refresherOutRate: {
            type: Number,
            default: u.gc('refresherOutRate', 0.7)
        },
        //是否显示最后更新时间,默认为否
        showRefresherUpdateTime: {
            type: Boolean,
            default: u.gc('showRefresherUpdateTime', false)
        },
        //如果需要区别不同页面的最后更新时间,请为不同页面的z-paging的`refresher-update-time-key`设置不同的字符串
        refresherUpdateTimeKey: {
            type: String,
            default: u.gc('refresherUpdateTimeKey', 'default')
        },
    },
    data() {
        return {
            //下拉刷新状态
            refresherStatus: Enum.Refresher.Default,
            refresherTouchstartY: 0,
            lastRefresherTouchmove: null,
            refresherReachMaxAngle: true,
            refresherTransform: 'translateY(0px)',
            refresherTransition: '',
            finalRefresherDefaultStyle: 'black',
            refresherRevealStackCount: 0,
            refresherCompleteTimeout: null,
            refresherCompleteSubTimeout: null,
            refresherEndTimeout: null,
            refresherTriggered: false,
            isTouchmoving: false,
            isTouchEnded: false,
            isUserPullDown: false,
            privateRefresherEnabled: -1,
            privateShowRefresherWhenReload: false,
            customRefresherHeight: -1,
            showCustomRefresher: false,
            doRefreshAnimateAfter: false,
            isRefresherInComplete: false,
            pullDownTimeStamp: 0,
            moveDis: 0,
            oldMoveDis: 0,
        }
    },
    watch: {
        refresherDefaultStyle: {
            handler(newVal) {
                if (newVal.length) {
                    this.finalRefresherDefaultStyle = newVal;
                }
            },
            immediate: true
        },
        refresherStatus(newVal, oldVal) {
            if (newVal === Enum.Refresher.Loading){
                this._cleanRefresherEndTimeout();
            }
            this.$emit('refresherStatusChange', newVal);
            this.$emit('update:refresherStatus', newVal);
        },
        moveDis(newVal, oldVal){
            this.oldMoveDis = oldVal;
        }
    },
    computed: {
        pullDownDisTimeStamp() {
            return 1000 / this.refresherFps;
        },
        finalRefresherEnabled() {
            if (this.useChatRecordMode) return false;
            if (this.privateRefresherEnabled === -1) return this.refresherEnabled;
            return this.privateRefresherEnabled === 1;
        },
        finalRefresherThreshold() {
            let refresherThreshold = this.refresherThreshold;
            let idDefault = false;
            if (refresherThreshold === '80rpx') {
                idDefault = true;
                if (this.showRefresherUpdateTime) {
                    refresherThreshold = '120rpx';
                }
            }
            if (idDefault && this.customRefresherHeight > 0) {
                return this.customRefresherHeight;
            }
            return u.convertTextToPx(refresherThreshold);
        },
        finalRefresherFixedBacHeight() {
            return u.convertTextToPx(this.refresherFixedBacHeight);
        },
        finalRefresherThemeStyle() {
            return this.refresherThemeStyle.length ? this.refresherThemeStyle : this.defaultThemeStyle;
        },
        finalRefresherOutRate() {
            let rate = this.refresherOutRate;
            rate = Math.max(0,rate);
            rate = Math.min(1,rate);
            return rate;
        },
        finalRefresherTransform() {
            if (this.refresherTransform === 'translateY(0px)') return 'none';
            return this.refresherTransform;
        },
        finalShowRefresherWhenReload() {
            return this.showRefresherWhenReload || this.privateShowRefresherWhenReload;
        },
        finalRefresherTriggered() {
            if (!(this.finalRefresherEnabled && !this.useCustomRefresher)) return false;
            return this.refresherTriggered;
        },
        showRefresher() {
            const showRefresher = this.finalRefresherEnabled && this.useCustomRefresher && this.isTouchmoving;
            // #ifndef APP-NVUE
            if (this.customRefresherHeight === -1 && showRefresher) {
                setTimeout(() => {
                    this.$nextTick(()=>{
                        this._updateCustomRefresherHeight();
                    })
                }, 100)
            }
            // #endif
            return showRefresher;
        },
        hasTouchmove(){
            // #ifdef VUE2
            // #ifdef APP-VUE || H5
            if (this.$listeners && !this.$listeners.refresherTouchmove) return false;
            // #endif
            // #ifdef MP-WEIXIN || MP-QQ
            return this.watchRefresherTouchmove;
            // #endif
            return true;
            // #endif
            return this.watchRefresherTouchmove;
        },
    },
    methods: {
        //终止下拉刷新状态
        endRefresh(){
           this._refresherEnd();
        },
        handleRefresherStatusChanged(func) {
            this.refresherStatusChangedFunc = func;
        },
        //自定义下拉刷新被触发
        _onRefresh(fromScrollView=false,isUserPullDown=true) {
            if (fromScrollView && !(this.finalRefresherEnabled && !this.useCustomRefresher)) return;
            this.$emit('onRefresh');
            this.$emit('Refresh');
            if (this.loading || this.isRefresherInComplete) return;
            this.loadingType = Enum.LoadingType.Refresher;
            if (this.nShowRefresherReveal) return;
            this.isUserPullDown = isUserPullDown;
            this.isUserReload = !isUserPullDown;
            this._startLoading(true);
            this.refresherTriggered = true;
            if(this.reloadWhenRefresh && isUserPullDown){
                if (this.useChatRecordMode) {
                    this._onLoadingMore('click')
                } else {
                    this._reload(false, false, isUserPullDown);
                }
            }
        },
        //自定义下拉刷新被复位
        _onRestore() {
            this.refresherTriggered = 'restore';
            this.$emit('onRestore');
            this.$emit('Restore');
        },
        // #ifndef APP-VUE || MP-WEIXIN || MP-QQ || H5
        //拖拽开始
        _refresherTouchstart(e) {
            if (this._touchDisabled()) return;
            const touch = u.getTouch(e);
            this._handleRefresherTouchstart(touch);
        },
        // #endif
        //进一步处理拖拽开始结果
        _handleRefresherTouchstart(touch) {
            if (!this.loading && this.isTouchEnded) {
                this.isTouchmoving = false;
            }
            this.isTouchEnded = false;
            this.refresherTransition = '';
            this.refresherTouchstartY = touch.touchY;
            this.$emit('refresherTouchstart', this.refresherTouchstartY);
            this.lastRefresherTouchmove = touch;
            this._cleanRefresherCompleteTimeout();
            this._cleanRefresherEndTimeout();
        },
        // #ifndef APP-VUE || MP-WEIXIN || MP-QQ || H5
        //拖拽中
        _refresherTouchmove(e) {
            const currentTimeStamp = u.getTime();
            if (this.pullDownTimeStamp && currentTimeStamp - this.pullDownTimeStamp <= this.pullDownDisTimeStamp) return;
            if (this._touchDisabled()) return;
            this.pullDownTimeStamp = Number(currentTimeStamp);
            const touch = u.getTouch(e);
            let refresherTouchmoveY = touch.touchY;
            let moveDis = refresherTouchmoveY - this.refresherTouchstartY;
            if (moveDis < 0) return;
            if (this.refresherMaxAngle >= 0 && this.refresherMaxAngle <= 90 && this.lastRefresherTouchmove && this.lastRefresherTouchmove.touchY <= refresherTouchmoveY) {
                if (!moveDis && !this.refresherAngleEnableChangeContinued && this.moveDis < 1 && !this.refresherReachMaxAngle) return;
                const x = Math.abs(touch.touchX - this.lastRefresherTouchmove.touchX);
                const y = Math.abs(refresherTouchmoveY - this.lastRefresherTouchmove.touchY);
                const z = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
                if ((x || y) && x > 1) {
                    const angle = Math.asin(y / z) / Math.PI * 180;
                    if (angle < this.refresherMaxAngle) {
                        this.lastRefresherTouchmove = touch;
                        this.refresherReachMaxAngle = false;
                        return;
                    }
                }
            }
            moveDis = this._getFinalRefresherMoveDis(moveDis);
            this._handleRefresherTouchmove(moveDis, touch);
            if (!this.disabledBounce) {
                if(this.isIos){
                    // #ifndef MP-LARK
                    this._handleScrollViewDisableBounce({bounce: false});
                    // #endif
                }
                this.disabledBounce = true;
            }
            this._emitTouchmove({pullingDistance:moveDis,dy:this.moveDis - this.oldMoveDis});
        },
        // #endif
        //进一步处理拖拽中结果
        _handleRefresherTouchmove(moveDis, touch) {
            this.refresherReachMaxAngle = true;
            this.isTouchmoving = true;
            //this.refresherTransition = '';
            this.isTouchEnded = false;
            this.refresherStatus = moveDis >= this.finalRefresherThreshold ? Enum.Refresher.ReleaseToRefresh : this.refresherStatus = Enum.Refresher.Default;
            // #ifndef APP-VUE || MP-WEIXIN || MP-QQ  || H5
            // this.scrollEnable = false;
            this.refresherTransform = `translateY(${moveDis}px)`;
            this.lastRefresherTouchmove = touch;
            // #endif
            this.moveDis = moveDis;
        },
        // #ifndef APP-VUE || MP-WEIXIN || MP-QQ || H5
        //拖拽结束
        _refresherTouchend(e) {
            if (this._touchDisabled() || !this.isTouchmoving) return;
            const touch = u.getTouch(e);
            let refresherTouchendY = touch.touchY;
            let moveDis = refresherTouchendY - this.refresherTouchstartY;
            moveDis = this._getFinalRefresherMoveDis(moveDis);
            this._handleRefresherTouchend(moveDis);
            this._handleScrollViewDisableBounce({bounce: true});
            this.disabledBounce = false;
        },
        // #endif
        //进一步处理拖拽结束结果
        _handleRefresherTouchend(moveDis) {
            // #ifndef APP-PLUS || H5 || MP-WEIXIN
            if (!this.isTouchmoving) return;
            // #endif
            this.refresherReachMaxAngle = true;
            if (moveDis < 0 && this.usePageScroll && this.loadingMoreEnabled && this.useCustomRefresher && this.pageScrollTop === -1) {
                if (this.showConsoleError) {
                    u.consoleErr('usePageScroll为true并且自定义下拉刷新时必须引入mixin或在page滚动时通过调用z-paging组件的updatePageScrollTop方法设置当前的scrollTop');
                }
            }
            this.isTouchEnded = true;
            if (moveDis >= this.finalRefresherThreshold && this.refresherStatus === Enum.Refresher.ReleaseToRefresh) {
                // #ifndef APP-VUE || MP-WEIXIN || MP-QQ  || H5
                this.refresherTransform = `translateY(${this.finalRefresherThreshold}px)`;
                // #endif
                this.moveDis = this.finalRefresherThreshold;
                this.refresherStatus = Enum.Refresher.Loading;
                this._doRefresherLoad();
            } else {
                this._refresherEnd();
                setTimeout(() => {
                    this.isTouchmoving = false;
                }, c.delayTime);
            }
            this.scrollEnable = true;
            // this.refresherTransition = 'transform .1s linear';
            this.$emit('refresherTouchend', moveDis);
        },
        //处理scroll-view bounce是否生效
        _handleScrollViewDisableBounce(e) {
            if (!this.usePageScroll && !this.scrollToTopBounceEnabled) {
                this.refresherTransition = '';
                this.scrollEnable = e.bounce;
            }
        },
        //wxs正在下拉状态改变处理
        _handleWxsPullingDownStatusChange(onPullingDown) {
            this.wxsOnPullingDown = onPullingDown;
            if (onPullingDown && !this.useChatRecordMode) {
                this.renderPropScrollTop = 0;
            }
        },
        //wxs正在下拉处理
        _handleWxsPullingDown(e){
            this._emitTouchmove({pullingDistance:e.moveDis,dy:e.diffDis});
        },
        //wxs通知更新其props
        _handlePropUpdate(e){
            this.wxsPropType = u.getTime().toString();
        },
        //下拉刷新结束
        _refresherEnd(shouldEndLoadingDelay = true, fromAddData = false, isUserPullDown = false, setLoading = true) {
            if (this.loadingType === Enum.LoadingType.Refresher) {
                let refresherCompleteDelay = 0;
                if(fromAddData && (isUserPullDown || this.showRefresherWhenReload)){
                    refresherCompleteDelay = this.refresherCompleteDuration > 700 ? 1 : this.refresherCompleteDelay;
                }
                const refresherStatus = refresherCompleteDelay > 0 ? Enum.Refresher.Complete : Enum.Refresher.Default;
                if (this.finalShowRefresherWhenReload) {
                    const stackCount = this.refresherRevealStackCount;
                    this.refresherRevealStackCount--;
                    if (stackCount > 1) return;
                }
                this._cleanRefresherEndTimeout();
                this.refresherEndTimeout = setTimeout(() => {
                    this.refresherStatus = refresherStatus;
                }, refresherStatus === Enum.Refresher.Default ? this.refresherCompleteDuration : 0);
                
                // #ifndef APP-NVUE
                if (refresherCompleteDelay > 0) {
                    this.isRefresherInComplete = true;
                }
                // #endif
                this._cleanRefresherCompleteTimeout();
                this.refresherCompleteTimeout = setTimeout(() => {
                    let animateDuration = 1;
                    const animateType = this.refresherEndBounceEnabled && fromAddData ? 'cubic-bezier(0.19,1.64,0.42,0.72)' : 'linear';
                    if (fromAddData) {
                        animateDuration = this.refresherEndBounceEnabled ? this.refresherCompleteDuration / 1000 : this.refresherCompleteDuration / 3000;
                    }
                    this.refresherTransition = `transform ${fromAddData?animateDuration:0.1}s ${animateType}`;
                    // #ifndef APP-VUE || MP-WEIXIN || MP-QQ  || H5
                    this.refresherTransform = 'translateY(0px)';
                    // #endif
                    // #ifdef APP-VUE || MP-WEIXIN || MP-QQ || H5
                    this.wxsPropType = this.refresherTransition + 'end' + u.getTime();
                    // #endif
                    // #ifdef APP-NVUE
                    this._nRefresherEnd();
                    // #endif
                    this.moveDis = 0;
                    // #ifndef APP-NVUE
                    if (refresherStatus === Enum.Refresher.Complete) {
                        if (this.refresherCompleteSubTimeout) {
                            clearTimeout(this.refresherCompleteSubTimeout);
                            this.refresherCompleteSubTimeout = null;
                        }
                        this.refresherCompleteSubTimeout = setTimeout(() => {
                            this.$nextTick(() => {
                                this.refresherStatus = Enum.Refresher.Default;
                                this.isRefresherInComplete = false;
                            })
                        }, animateDuration * 800);
                    }
                    // #endif
                }, refresherCompleteDelay);
            }
            if (setLoading) {
                setTimeout(() => {
                    this.loading = false;
                }, shouldEndLoadingDelay ? c.delayTime : 0);
                isUserPullDown && this._onRestore();
            }
        },
        //模拟用户手动触发下拉刷新
        _doRefresherRefreshAnimate() {
            this._cleanRefresherCompleteTimeout();
            // #ifndef APP-NVUE
            const doRefreshAnimateAfter = !this.doRefreshAnimateAfter && (this.finalShowRefresherWhenReload) && this
                .customRefresherHeight === -1 && this.refresherThreshold === '80rpx';
            if (doRefreshAnimateAfter) {
                this.doRefreshAnimateAfter = true;
                return;
            }
            // #endif
            this.refresherRevealStackCount++;
            // #ifndef APP-VUE || MP-WEIXIN || MP-QQ  || H5
            this.refresherTransform = `translateY(${this.finalRefresherThreshold}px)`;
            // #endif
            // #ifdef APP-VUE || MP-WEIXIN || MP-QQ || H5
            this.wxsPropType = 'begin' + u.getTime();
            // #endif
            this.moveDis = this.finalRefresherThreshold;
            this.refresherStatus = Enum.Refresher.Loading;
            this.isTouchmoving = true;
            this._doRefresherLoad(false);
        },
        //触发下拉刷新
        _doRefresherLoad(isUserPullDown=true) {
            this._onRefresh(false,isUserPullDown);
            this.loading = true;
        },
        //获取处理后的moveDis
        _getFinalRefresherMoveDis(moveDis) {
            moveDis = moveDis * 0.85;
            if (moveDis >= this.finalRefresherThreshold) {
                moveDis = this.finalRefresherThreshold + (moveDis - this.finalRefresherThreshold) * (1 - this.finalRefresherOutRate);
            }
            return moveDis;
        },
        // #ifndef APP-VUE || MP-WEIXIN || MP-QQ || H5
        //判断touch手势是否要触发
        _touchDisabled() {
            let checkOldScrollTop = this.oldScrollTop > 5;
            return this.loading || this.isRefresherInComplete || this.useChatRecordMode || !this.refresherEnabled || !this.useCustomRefresher ||(this.usePageScroll && this.useCustomRefresher && this.pageScrollTop > 10) || (!(this.usePageScroll && this.useCustomRefresher) && checkOldScrollTop);
        },
        // #endif
        //更新自定义下拉刷新view高度
        _updateCustomRefresherHeight() {
            this._getNodeClientRect('.zp-custom-refresher-slot-view').then((res) => {
                if (res) {
                    this.customRefresherHeight = res[0].height;
                    if (this.customRefresherHeight > 0) {
                        this.showCustomRefresher = true;
                    }
                } else {
                    this.customRefresherHeight = 0;
                }
                if (this.doRefreshAnimateAfter) {
                    this.doRefreshAnimateAfter = false;
                    this._doRefresherRefreshAnimate();
                }
            });
        },
        //发射pullingDown事件
        _emitTouchmove(e){
            // #ifndef APP-NVUE
            e.viewHeight = this.finalRefresherThreshold;
            // #endif
            e.rate = e.pullingDistance / e.viewHeight;
            if(this.hasTouchmove){
                this.$emit('refresherTouchmove',e);
            }
        },
        //清除refresherCompleteTimeout
        _cleanRefresherCompleteTimeout() {
            this.refresherCompleteTimeout = this._cleanTimeout(this.refresherCompleteTimeout);
            // #ifdef APP-NVUE
            this._nRefresherEnd(false);
            // #endif
        },
        //清除refresherEndTimeout
        _cleanRefresherEndTimeout() {
            this.refresherEndTimeout = this._cleanTimeout(this.refresherEndTimeout);
        },
    }
}
 
export default ZPRefresher;