<template>
  <div class="text-tooltip">
    <el-tooltip
      class="item"
      effect="dark"
      :disabled="isShowTooltip"
      :content="content"
      :placement="placement"
    >
      <div class="over-flow" @mouseover="onMouseOver(refName)">
        <span :ref="refName"> <slot name="icon"></slot>{{ content }} </span>
      </div>
    </el-tooltip>
  </div>
</template>

<script>
export default {
  name: "textTooltip",
  props: {
    // 显示的文字内容
    content: {
      type: [String, Number],
      default: () => {
        return "";
      },
    },
    refName: {
      type: String,
      default: () => {
        return "";
      },
    },
    placement: {
      type: String,
      default: "top",
    },
  },
  data() {
    return {
      isShowTooltip: true,
    };
  },
  methods: {
    onMouseOver(str) {
      if (this.$refs[str]) {
        const parentWidth = this.$refs[str].parentNode.offsetWidth;
        const contentWidth = this.$refs[str].offsetWidth;
        // 判断是否开启tooltip功能
        if (contentWidth > parentWidth) {
          this.isShowTooltip = false;
        } else {
          this.isShowTooltip = true;
        }
      }
    },
  },
};
</script>

<style scoped>
.over-flow {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
</style>