<template>
  <div class="top-right-btn" :style="style">
    <el-row>
      <el-tooltip 
        class="item" 
        effect="dark"
        v-if="search"
        :content="showSearch ? '隐藏搜索' : '显示搜索'" 
        placement="top"
      >
        <el-button size="small" circle :icon="Search" @click="toggleSearch()" />
      </el-tooltip>
      <el-tooltip class="item" effect="dark" content="刷新" placement="top">
        <el-button size="small" circle :icon="Refresh" @click="refresh()" />
      </el-tooltip>
      <el-tooltip 
        class="item" 
        effect="dark" 
        content="显隐列" 
        placement="top"
        v-if="columns"
      >
        <el-button size="small" circle :icon="Menu" @click="showColumn()" />
      </el-tooltip>
    </el-row>
    <el-dialog :title="title" v-model="open" append-to-body>
      <el-transfer 
        :titles="['显示', '隐藏']"
        v-model="value" 
        :data="columns" 
        @change="dataChange"
      />
    </el-dialog>
  </div>
</template>

<script setup>
import { ref, computed, onMounted } from 'vue'
import { Search, Refresh, Menu } from '@element-plus/icons-vue'

// 组件名称
defineOptions({
  name: "RightToolbar"
})

// 定义 props
const props = defineProps({
  showSearch: {
    type: Boolean,
    default: true,
  },
  columns: {
    type: Array,
  },
  search: {
    type: Boolean,
    default: true,
  },
  gutter: {
    type: Number,
    default: 10,
  },
})

// 定义 emits
const emit = defineEmits(['update:showSearch', 'queryTable'])

// 数据状态
const value = ref([])
const title = ref('显示/隐藏')
const open = ref(false)

// 计算属性
const style = computed(() => {
  const ret = {};
  if (props.gutter) {
    ret.marginRight = `${props.gutter / 2}px`;
  }
  return ret;
})

// 组件挂载时执行
onMounted(() => {
  // 显隐列初始默认隐藏列
  for (let item in props.columns) {
    if (props.columns[item].visible === false) {
      value.value.push(parseInt(item));
    }
  }
})

// 搜索
const toggleSearch = () => {
  emit("update:showSearch", !props.showSearch);
}

// 刷新
const refresh = () => {
  emit("queryTable");
}

// 右侧列表元素变化
// 右侧列表元素变化
const dataChange = (data) => {
  columnsCopy.value.forEach((item, index) => {
    item.visible = !data.includes(index);
  });
  // 通知父组件更新
  emit('update:columns', columnsCopy.value)
}

// 打开显隐列dialog
const showColumn = () => {
  open.value = true;
}
</script>

<style lang="scss" scoped>
:deep(.el-transfer__button) {
  border-radius: 50%;
  padding: 12px;
  display: block;
  margin-left: 0px;
}

:deep(.el-transfer__button:first-child) {
  margin-bottom: 10px;
}
</style>