<template> 
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    <u-popup mode="bottom" :border-radius="borderRadius" :popup="false" v-model="value" :maskCloseAble="maskCloseAble" 
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        length="auto" :safeAreaInsetBottom="safeAreaInsetBottom" @close="popupClose" :z-index="uZIndex"> 
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        <view class="u-tips u-border-bottom" v-if="tips.text" :style="[tipsStyle]"> 
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            {{tips.text}} 
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        </view> 
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        <block v-for="(item, index) in list" :key="index"> 
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            <view  
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                @touchmove.stop.prevent  
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                @tap="itemClick(index)"  
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                :style="[itemStyle(index)]"  
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                class="u-action-sheet-item u-line-1"  
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                :class="[index < list.length - 1 ? 'u-border-bottom' : '']" 
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                :hover-stay-time="150" 
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            > 
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                <text>{{item.text}}</text> 
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                <text class="u-action-sheet-item__subtext u-line-1" v-if="item.subText">{{item.subText}}</text> 
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            </view> 
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        </block> 
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        <view class="u-gab" v-if="cancelBtn"> 
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        </view> 
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        <view @touchmove.stop.prevent class="u-actionsheet-cancel u-action-sheet-item" hover-class="u-hover-class" 
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            :hover-stay-time="150" v-if="cancelBtn" @tap="close">{{cancelText}}</view> 
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    </u-popup> 
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</template> 
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<script> 
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    /** 
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     * actionSheet 操作菜单 
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     * @description 本组件用于从底部弹出一个操作菜单,供用户选择并返回结果。本组件功能类似于uni的uni.showActionSheetAPI,配置更加灵活,所有平台都表现一致。 
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     * @tutorial https://www.uviewui.com/components/actionSheet.html 
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     * @property {Array<Object>} list 按钮的文字数组,见官方文档示例 
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     * @property {Object} tips 顶部的提示文字,见官方文档示例 
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     * @property {String} cancel-text 取消按钮的提示文字 
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     * @property {Boolean} cancel-btn 是否显示底部的取消按钮(默认true) 
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     * @property {Number String} border-radius 弹出部分顶部左右的圆角值,单位rpx(默认0) 
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     * @property {Boolean} mask-close-able 点击遮罩是否可以关闭(默认true) 
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     * @property {Boolean} safe-area-inset-bottom 是否开启底部安全区适配(默认false) 
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     * @property {Number String} z-index z-index值(默认1075) 
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     * @property {String} cancel-text 取消按钮的提示文字 
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     * @event {Function} click 点击ActionSheet列表项时触发 
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     * @event {Function} close 点击取消按钮时触发 
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     * @example <u-action-sheet :list="list" @click="click" v-model="show"></u-action-sheet> 
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     */ 
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    export default { 
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        name: "u-action-sheet", 
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        props: { 
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            // 点击遮罩是否可以关闭actionsheet 
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            maskCloseAble: { 
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                type: Boolean, 
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                default: true 
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            }, 
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            // 按钮的文字数组,可以自定义颜色和字体大小,字体单位为rpx 
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            list: { 
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                type: Array, 
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                default () { 
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                    // 如下 
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                    // return [{ 
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                    //     text: '确定', 
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                    //     color: '', 
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                    //     fontSize: '' 
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                    // }] 
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                    return []; 
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                } 
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            }, 
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            // 顶部的提示文字 
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            tips: { 
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                type: Object, 
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                default () { 
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                    return { 
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                        text: '', 
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                        color: '', 
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                        fontSize: '26' 
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                    } 
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                } 
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            }, 
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            // 底部的取消按钮 
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            cancelBtn: { 
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                type: Boolean, 
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                default: true 
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            }, 
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            // 是否开启底部安全区适配,开启的话,会在iPhoneX机型底部添加一定的内边距 
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            safeAreaInsetBottom: { 
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                type: Boolean, 
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                default: false 
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            }, 
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            // 通过双向绑定控制组件的弹出与收起 
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            value: { 
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                type: Boolean, 
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                default: false 
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            }, 
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            // 弹出的顶部圆角值 
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            borderRadius: { 
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                type: [String, Number], 
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                default: 0 
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            }, 
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            // 弹出的z-index值 
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            zIndex: { 
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                type: [String, Number], 
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                default: 0 
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            }, 
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            // 取消按钮的文字提示 
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            cancelText: { 
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                type: String, 
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                default: '取消' 
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            } 
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        }, 
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        computed: { 
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            // 顶部提示的样式 
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            tipsStyle() { 
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                let style = {}; 
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                if (this.tips.color) style.color = this.tips.color; 
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                if (this.tips.fontSize) style.fontSize = this.tips.fontSize + 'rpx'; 
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                return style; 
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            }, 
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            // 操作项目的样式 
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            itemStyle() { 
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                return (index) => { 
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                    let style = {}; 
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                    if (this.list[index].color) style.color = this.list[index].color; 
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                    if (this.list[index].fontSize) style.fontSize = this.list[index].fontSize + 'rpx'; 
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                    // 选项被禁用的样式 
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                    if (this.list[index].disabled) style.color = '#c0c4cc'; 
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                    return style; 
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                } 
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            }, 
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            uZIndex() { 
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                // 如果用户有传递z-index值,优先使用 
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                return this.zIndex ? this.zIndex : this.$u.zIndex.popup; 
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            } 
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        }, 
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        methods: { 
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            // 点击取消按钮 
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            close() { 
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                // 发送input事件,并不会作用于父组件,而是要设置组件内部通过props传递的value参数 
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                // 这是一个vue发送事件的特殊用法 
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                this.popupClose(); 
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                this.$emit('close'); 
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            }, 
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            // 弹窗关闭 
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            popupClose() { 
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                this.$emit('input', false); 
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            }, 
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            // 点击某一个item 
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            itemClick(index) { 
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                // disabled的项禁止点击 
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                if(this.list[index].disabled) return; 
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                this.$emit('click', index); 
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                this.$emit('input', false); 
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            } 
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        } 
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    } 
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</script> 
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<style lang="scss" scoped> 
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    @import "../../libs/css/style.components.scss"; 
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    .u-tips { 
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        font-size: 26rpx; 
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        text-align: center; 
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        padding: 34rpx 0; 
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        line-height: 1; 
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        color: $u-tips-color; 
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    } 
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    .u-action-sheet-item { 
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        @include vue-flex;; 
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        line-height: 1; 
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        justify-content: center; 
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        align-items: center; 
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        font-size: 32rpx; 
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        padding: 34rpx 0; 
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        flex-direction: column; 
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    } 
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    .u-action-sheet-item__subtext { 
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        font-size: 24rpx; 
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        color: $u-tips-color; 
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        margin-top: 20rpx; 
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    } 
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    .u-gab { 
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        height: 12rpx; 
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        background-color: rgb(234, 234, 236); 
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    } 
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    .u-actionsheet-cancel { 
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        color: $u-main-color; 
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    } 
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</style> 
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