<template>
<uni-shadow-root class="vant-tabbar-index"><view :class="(border ? 'van-hairline--top-bottom' : '')+' '+(utils.bem('tabbar', { fixed, safe: safeAreaInsetBottom }))+' custom-class'" :style="zIndex ? 'z-index: ' + zIndex : ''">
  <slot></slot>
</view>

<view v-if="fixed && placeholder" :style="'height: '+(height)+'px;'"></view></uni-shadow-root>
</template>
<wxs src="../wxs/utils.wxs" module="utils"></wxs>
<script>

global['__wxRoute'] = 'vant/tabbar/index'
import { VantComponent } from '../common/component';
import { useChildren } from '../common/relation';
import { getRect } from '../common/utils';
VantComponent({
  relation: useChildren('tabbar-item', function () {
    this.updateChildren();
  }),
  props: {
    active: {
      type: null,
      observer: 'updateChildren',
    },
    activeColor: {
      type: String,
      observer: 'updateChildren',
    },
    inactiveColor: {
      type: String,
      observer: 'updateChildren',
    },
    fixed: {
      type: Boolean,
      value: true,
      observer: 'setHeight',
    },
    placeholder: {
      type: Boolean,
      observer: 'setHeight',
    },
    border: {
      type: Boolean,
      value: true,
    },
    zIndex: {
      type: Number,
      value: 1,
    },
    safeAreaInsetBottom: {
      type: Boolean,
      value: true,
    },
  },
  data: {
    height: 50,
  },
  methods: {
    updateChildren() {
      const { children } = this;
      if (!Array.isArray(children) || !children.length) {
        return;
      }
      children.forEach((child) => child.updateFromParent());
    },
    setHeight() {
      if (!this.data.fixed || !this.data.placeholder) {
        return;
      }
      wx.nextTick(() => {
        getRect(this, '.van-tabbar').then((res) => {
          this.setData({ height: res.height });
        });
      });
    },
  },
});
export default global['__wxComponents']['vant/tabbar/index']
</script>
<style platform="mp-weixin">
@import '../common/index.css';

.van-tabbar {
  display: -webkit-flex;
  display: flex;
  box-sizing: initial;
  width: 100%;
  height: 100rpx;
  height: var(--tabbar-height,100rpx);
  background-color: #fff;
  background-color: var(--tabbar-background-color,#fff);
}

.van-tabbar--fixed {
  position: fixed;
  bottom: 0;
  left: 0;
}

.van-tabbar--safe {
  padding-bottom: env(safe-area-inset-bottom);
}
</style>