vux actionsheet 仿写

基于vux0.1.3

1.效果图

2.思路整理

2.1 label实现支付方式的选择

2.2 点击“确认支付”抛出事件，传递选择的支付方式

3. 动画

3.1 actionsheet 从下至上

initialize

-webkit-transform: translateY(100%);
transform: translateY(100%);

-webkit-backface-visibility: hidden;
backface-visibility: hidden;

-webkit-transition: -webkit-transform .3s;
transition: transform .3s;

show

transform: translate(0, 0);

3.2 mask 由浅至深

initialize

background: rgba(0,0,0,0);
transition:background .3s;

show

background: rgba(0,0,0,.6);

4. 代码实现

/**
@example
<template>
  <pay-action-sheet :show.sync="isActionSheetShow" :menus="menus" @pay-way-selected="payWaySelected"></pay-action-sheet>
</template>
data() {
  return {
    isActionSheetShow: false,
    menus: {
      wechat: '微信支付',
      ali: '支付宝支付'
    }
  }
}
methods: {
  /**
  * 选择 支付方式
  */
  payWaySelected (payWay) {
    console.log( payWay)
  }  
}
**/

<template>
  <div class="pay-actionsheet">
    <div class="pay_actionsheet_mask" :class="{'pay_actionsheet_fade_toggle': show}" :style="{display: show ? 'block' : 'none'}" v-touch:tap="show=false"></div>
    <div class="pay_actionsheet" :class="{'pay_actionsheet_toggle': show}">
      <div class="pay_actionsheet_title"><span class="close-icon" v-touch:tap="onCloseTap"></span>支付详情</div>
      <div class="pay_actionsheet_menu">
        <label class="pay_actionsheet_cell" v-for="(key, text) in menus" for="{{key}}">
          <img class="pay_actionsheet_cell_img" :src="getCellSrc(key)" >{{text}}
          <input class="cell_check" type="radio" value="{{key}}" checked="{{!$index}}" v-model="value" id="{{key}}">
          <span class="cell_checked"></span>
        </label>
        <div class="pay_actionsheet_cell pay_actionsheet_confirm" v-touch:tap="onConfirmTap">{{{confirmText}}}</div>
      </div>
    </div>
  </div>
</template>

<script>
  export default {
    props: {
      show: {
        type: Boolean,
        required: true,
        twoWay: true
      },
      menus: {
        type: Object,
        default: {}
      },
      value: {
        type: Array,
        default: () => []
      }
    },
    data () {
      return {
        payWay: 'wechat'
      }
    },
    computed: {
      confirmText () {
        return '确认支付'
      }
    },
    methods: {
      onCloseTap () {
        this.show = false
      },
      onConfirmTap () {
        this.show = false
        this.$emit('pay-way-selected', JSON.parse(JSON.stringify(this.payWay)))
      },
      fixIos (zIndex) {
        if (this.$tabbar && /iphone/i.test(navigator.userAgent)) {
          this.$tabbar.style.zIndex = zIndex
        }
      },
      getCellSrc (key) {
        return './static/image/pay/' + key + '.png'
      }
    },
    watch: {
      show (val) {
        if (val) {
          this.fixIos(-1)
        } else {
          setTimeout(() => {
            this.fixIos(100)
        }, 200)
        }
      },
      value (newVal) {
        this.payWay = newVal
      }
    },
    beforeDestroy () {
      this.fixIos(100)
    }
  }
</script>

<style lang="less">
  .pay-actionsheet{
    .pay_actionsheet_mask {
      display: none;
      position: fixed;
      z-index: 1000;
       100%;
      height: 100%;
      top: 0;
      left: 0;
      background: rgba(0,0,0,.6);
    }

    .pay_actionsheet{
      position: fixed;
      left: 0;
      bottom: 0;
      -webkit-transform: translateY(100%);
      transform: translateY(100%);
      -webkit-backface-visibility: hidden;
      backface-visibility: hidden;
      z-index: 5000;
       100%;
      height: 15rem;
      background-color: #fff;
      -webkit-transition: -webkit-transform .3s;
      transition: transform .3s;

      //actionSheet aniamtion
      &_toggle{
        transform: translate(0, 0);
      }

      &_title{
        position: relative;
        height: 2.5rem;
        font-size: 0.85rem;
        color: #000;
        line-height: 2.5rem;
        text-align: center;
        .close-icon{
          &:before{
            position: absolute;
             2.6rem;
            left: 0;
            text-align: center;
            font-family: 'myicon';
            content: 'e90d';
            font-size: 0.8rem !important;
          }
        }
      }

      &_menu{
        background-color: #FFF;
      }

      &_cell {
        position: relative;
        display: block;
        padding: 0 0.9rem;
        height: 3rem;
        text-align: left;
        font-size: 0.8rem;
        color: #aaa;
        line-height: 3rem;
        &_img {
           1.6rem;
          vertical-align: middle;
          margin-right: 1rem;
        }
      }

      .cell_checked {
        position: absolute;
        top: 1rem;
        right: 0.9rem;
        display: inline-block;
         1rem;
        height: 1rem;
        border: #ddd 1px solid;
        border-radius: 50%;
      }
      .cell_check{
        position: absolute;
        left: -999em;
        &:checked {
          & + .cell_checked {
            border: 0;
            &:before {
              position: absolute;
              display: block;
               1rem;
              height: 1rem;
              line-height: 1rem;
              font-family: 'myicon';
              content: 'e90c';
              color: #00b0f0;
              font-size: 1rem !important;
            }
          }
        }
      }

      &_title:before, &_cell:before {
        content: " ";
        position: absolute;
        left: 0;
        bottom: -1px;
         100%;
        height: 0;
        border-bottom: 1px solid #f0eff5;
      }

      &_confirm {
        position: absolute;
        bottom: 0;
         100%;
        height: 2.45rem;
        padding: 0;
        text-align: center;
        line-height: 2.45rem;
        background: #00b0f0;
        color: #fff;
        &:after {
          border: 0;
        }
      }
    }
  }
</style>