<template>
  <div class="inputs">
    <div
      :style="{width: inputWidth}"
      style="min-width: 180px"
      class="el-select"
      @click="showDialog"
    >
      <div
        ref="tagSpans"
        style="width: calc(100% - 50px)"
        :class="{
          'el-select__tags_readonly': !inputWriteable,
          'el-select__tags': inputWriteable,
        }"
      >
        <span>
          <span
            class="el-tag el-tag--info el-tag--small"
            @click.stop
            v-for="(item, index) in selectors"
            :key="index"
          >
            <span class="el-select__tags-text">{{ item.name }}</span>
            <i
              v-if="inputWriteable"
              class="el-tag__close el-icon-close"
              @click="handleRemove(item)"
            ></i>
          </span>
        </span>
      </div>
      <div v-if="inputWriteable">
        <ht-input
          :name="inputName"
          type="text"
          ref="inputEl"
          v-model="name"
          @clear="clear"
          :class="{'has-value': name}"
          :placeholder="placeholder"
          :validate="inputValidate"
          :style="{height: inputSuffixHeight + 'px'}"
          style="width: 100%"
        >
          <el-button slot="append" icon="icon-biaodan2"></el-button>
        </ht-input>
      </div>
    </div>
    <!--表单选择器-->
    <eip-flow-dialog
      ref="eipFlowDialog"
      name="eipFlowDialog"
      @onConfirm="handleDialogSure"
      :single="true"
      append-to-body
    />
  </div>
</template>

<script>
import utils from '@/hotent-ui-util.js'
const eipFlowDialog = () => import('@/components/dialog/EipFlowDialog.vue')
export default {
  name: 'eip-form-selector',
  props: {
    validate: [String, Object],
    value: [String, Object, Array],
    placeholder: {
      type: String,
      default: '请输入内容',
    },
    permission: {
      type: String,
      default: 'w',
      validator: function (value) {
        return ['b', 'w', 'r', 'n'].indexOf(value) !== -1
      },
    },
    single: {
      type: Boolean,
      default: false,
    },
    config: Object,
    data: {
      type: Array,
      default: () => {
        return []
      },
    },
    appendToBody: {
      type: Boolean,
      default: false,
    },
    inputWidth: {
      type: String,
      default: '100%',
    },
  },
  components: {
    eipFlowDialog,
  },
  data() {
    return {
      inputName: null,
      inputSuffixHeight: 30,
      name: '',
      selectors: [],
      dialogVisible: false,
      currentDemension: null,
    }
  },
  computed: {
    inputWriteable: function () {
      return utils.getWriteable(this.permission)
    },
    inputValidate: function () {
      return utils.addRequiredOrNot(this.permission, this.validate, this)
    },
  },
  watch: {
    // 当所选择的数据发生变化时，同步到v-model中
    selectors: function (newVal) {
      if (newVal && newVal.length >= 0 && newVal[0] && newVal[0].name) {
        this.name = newVal[0].name
      } else {
        this.name = ''
      }
    },
    value: function (newVal) {
      if (this.value && JSON.stringify(newVal) != '{}') {
        if (this.selectors.length > 0) {
          this.selectors = []
        }
        this.selectors.push(newVal)
      } else {
        this.selectors = []
      }
    },
  },
  mounted() {
    // 组件第一次挂载时，同步value到当前所选数据中
    if (this.value && JSON.stringify(this.value) != '{}') {
      this.selectors.push(this.value)
    } else {
      this.selectors = []
    }
  },
  created() {
    this.inputName = this.name ? this.name : utils.getName()
    this.$validator = this.$root.$validator
  },
  methods: {
    showDialog() {
      if (!this.inputWriteable) {
        return
      }
      this.$refs.eipFlowDialog.showDialog(this.selectors)
    },
    handleDialogSure(data) {
      this.selectors = data
      this.$emit('input', this.selectors[0])
    },
    handleRemove(item) {
      this.selectors.remove(item)
      this.$emit('input', {})
    },
    clear() {
      this.selectors = []
    },
    // 更新当前输入框的高度来适配已选数据的高度
    calacInputSuffixHeight() {
      if (!this.$refs.tagSpans) return
      if (this.$refs.tagSpans.offsetHeight) {
        this.inputSuffixHeight = this.$refs.tagSpans.offsetHeight + 5
      } else {
        this.inputSuffixHeight = 30
      }
    },
  },
}
</script>
<style lang="scss" scoped>
.inputs {
  display: block;
}
.el-input__inner[aria-invalid='true'] {
  border-color: #f56c6c;
}
.has-value {
  ::v-deep {
    div[aria-invalid='true'] .el-input__inner {
      border-color: #dcdfe6;
    }
    .el-form-item__error {
      display: none;
    }
  }
}
</style>
