vue el-table 表头搜索(筛选)功能 头部添加搜索icon 点击popover外时,关闭popover 自定义指令(二)

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在可以点击打开后 发现和antd还有什么不一样的地方 在这里插入图片描述 原来是在点击icon打开popover时,想关闭这个popover需要再次点击icon 这很明显不合理,更合适的方法是点击其它任何区域,都会隐藏这个popover 于是用到了自定义指令。 在组件内部,新增一个visible变量控制是否显示,在点击外部时,设置为false

data () {
    return {
      value: '',
      visible: false,
      iconColor: false
    }
  },
methods: {
closeOver () {
          this.visible = false
      },
}

directives: {
        clickOutside: {
            bind (el, binding, vnode) {
            function clickHandler (e) {
            // 这里判断点击的元素是否是本身,是本身,则返回
                if (el.contains(e.target)) {
                    return false
                }
                // 判断指令中是否绑定了函数
                if (binding.expression) {
                    // 如果绑定了函数 则调用那个函数,此处binding.value就是handleClose方法
                    binding.value(e)
                }
                }
                // 给当前元素绑定个私有变量,方便在unbind中可以解除事件监听
                el.__vueClickOutside__ = clickHandler
                document.addEventListener('click', clickHandler)
            },
            update () {},
            unbind (el, binding) {
                // 解除事件监听
                document.removeEventListener('click', el.__vueClickOutside__)
                delete el.__vueClickOutside__
            }
        }
    }

自定义指令写好后,在icon外部div上添加即可

<div slot="reference" style="margin-left:5px" @click.stop="popClick" v-click-outside="closeOver">

完整组件代码如下

<template>
  <el-popover placement="bottom" width="200" trigger="manual" v-model="visible" @show="showPopover">
    <el-input
      placeholder="请输入内容"
      v-model="value"
      clearable
      @keyup.enter.native="confirm"
      ref="sInput"
    >
      <!-- <el-button slot="append" icon="el-icon-search" @click="confirm"> -->
      <!-- </el-button> -->
    </el-input>
    <el-button type="primary" size="mini" @click="confirm" style="margin-top:5px">搜索</el-button>
    <el-button size="mini" @click="resetData">重置</el-button>
    <div slot="reference" style="margin-left:5px" @click.stop="popClick" v-click-outside="closeOver">
      <!-- <i class="el-icon-search" :style="{'color':iconColor}" ></i> -->
      <svg
        viewBox="64 64 896 896"
        data-icon="search"
        width="1em"
        height="1em"
        fill="currentColor"
        :style="{'color':iconColor? 'rgb(16, 142, 233)': '', 'margin-top': '5px'}" >
        <path d="M909.6 854.5L649.9 594.8C690.2 542.7 712 479 712 412c0-80.2-31.3-155.4-87.9-212.1-56.6-56.7-132-87.9-212.1-87.9s-155.5 31.3-212.1 87.9C143.2 256.5 112 331.8 112 412c0 80.1 31.3 155.5 87.9 212.1C256.5 680.8 331.8 712 412 712c67 0 130.6-21.8 182.7-62l259.7 259.6a8.2 8.2 0 0 0 11.6 0l43.6-43.5a8.2 8.2 0 0 0 0-11.6zM570.4 570.4C528 612.7 471.8 636 412 636s-116-23.3-158.4-65.6C211.3 528 188 471.8 188 412s23.3-116.1 65.6-158.4C296 211.3 352.2 188 412 188s116.1 23.2 158.4 65.6S636 352.2 636 412s-23.3 116.1-65.6 158.4z">
        </path>
      </svg>
    </div>
  </el-popover>
</template>

<script>
export default {
  inject: ['reload'],
  data () {
    return {
      value: '',
      visible: false,
      iconColor: false
    }
  },
  props: {
    tableType: {
      type: String,
      default: ''
    },
    type: {
      type: String,
      default: ''
    },
    defaultValue: {
      type: String,
      default: ''
    },
    options: {
      type: Array,
      default: function () {
        return []
      }
    },
    defaultProps: {
      type: Object,
      default: function () {
        return {
          label: 'label',
          value: 'value'
        }
      }
    }
  },
  watch: {
    defaultValue (newVal, oldVal) {
      const self = this
      self.value = newVal
    }

  },
  methods: {
      showPopover () {
        this.$nextTick(() => {
        this.$refs.sInput.focus()
        })
      },
      resetData () {
          console.log('reset')
          this.value = ''
          this.visible = false
          this.iconColor = false
          const self = this
          self.$emit('resetChange', { type: self.type, value: self.value, tableType: self.tableType })
      },
      closeOver () {
          this.visible = false
      },
      popClick (e) {
          // e.stopPropagation()
          this.visible = !this.visible
      },
      confirm () {
          this.visible = false
          this.iconColor = true
          const self = this
          if (self.value) {
              self.$emit('selectChange', { type: self.type, value: self.value, tableType: self.tableType })
          }
      }
    },
    directives: {
        clickOutside: {
            bind (el, binding, vnode) {
            function clickHandler (e) {
            // 这里判断点击的元素是否是本身,是本身,则返回
                if (el.contains(e.target)) {
                    return false
                }
                // 判断指令中是否绑定了函数
                if (binding.expression) {
                    // 如果绑定了函数 则调用那个函数,此处binding.value就是handleClose方法
                    binding.value(e)
                }
                }
                // 给当前元素绑定个私有变量,方便在unbind中可以解除事件监听
                el.__vueClickOutside__ = clickHandler
                document.addEventListener('click', clickHandler)
            },
            update () {},
            unbind (el, binding) {
                // 解除事件监听
                document.removeEventListener('click', el.__vueClickOutside__)
                delete el.__vueClickOutside__
            }
        }
    }
  }
</script>

参考 segmentfault.com/a/119000001… 表示真诚的感谢