/** slot action 固定按钮操作
 *  btnName 按钮名 
 * valueCallback 按钮返回值
    按钮绑定事件 btnClick

    tr绑定事件 onRowClick
    valueCallback tr返回值

    columns 数组 {
      key: '',
      title: '',
      width: 200,
      fixed: 'left',  //设置fixed 必须设置width
      align: 'center',

      // 按钮默认 slot action
      slot: 'action'
      valueCallback: '',
      btnName: ''
    }
**/
Component({
    options: {
        multipleSlots: true,
    },
    // 自定义外部样式class  th头部样式           tr样式           td样式
    externalClasses: ['thead-row-class', 'tbody-tow-class', 'td-class'],
    properties: {
        // td 数组
        data: {
            type: Array,
            value: []
        },
        // thead 数组
        columns: {
            type: Array,
            value: []
        },
        // table 高度
        height: {
            type: String,
            value: 'auto'
        },
        // table 宽度
        width: {
            type: Number || String,
            value: 750
        },
        // 单元格的宽度
        tdWidth: {
            type: Number,
            value: 35
        },
        // 固定表头 thead达到Header的位置时就应该被fixed了
        offsetTop: {
            type: Number,
            value: 150
        },
        // 是否带有纵向边框
        isBorder: {
            type: Boolean,
            value: true
        },
        // 是否带有斑马条纹
        isStripe: {
            type: Boolean,
            value: true
        },
        // tr 返回值Key
        valueCallback: {
            type: String,
            value: ''
        },
        // 无数据时信息
        msg: {
            type: String,
            value: '暂无数据~'
        },
        // thead 固定
        isFixed: {
            type: Boolean,
            value: true
        },
    },
    data: {
        scrolWidth: '100%',
        marginTopValue: 0,
        leftWidth: 0,
        leftIndex: 0,
        rightWidth: 0,
        rightIndex: 0,
    },
    // 生命周期
    lifetimes: {
        // 组件实例进入页面节点树时调用
        attached() {
            const scrolWidth = this.properties.columns.reduce((total, item) => total + item.width, 0)
            this.createSelectorQuery().selectAll(".thead .td").boundingClientRect((res) => {
                if (!isNaN(scrolWidth)) {
                    this.properties.columns.map(item => {
                        item.width = item.width / scrolWidth * this.properties.width
                    })
                } else {
                    this.properties.columns.map((item, index) => {
                        item.width = res[index].width
                    })
                }
            }).exec(res => {
                let list = [], listLeft = [], listRight = [], leftWidth = 0, rightWidth = 0;
                list = this.properties.columns.filter(item => !item.fixed)
                listLeft = this.properties.columns.filter(item => item.fixed == 'left')
                listLeft.map(item => {
                    leftWidth += item.width
                })
                listRight = this.properties.columns.filter(item => item.fixed == 'right')
                listRight.map(item => {
                    rightWidth += item.width
                })
                this.setData({
                    columns: [...listLeft, ...list, ...listRight],
                    marginTopValue: res[0][0].height,
                    leftWidth: leftWidth,
                    rightWidth: rightWidth,
                    leftIndex: listLeft.length ? listLeft.length : 0,
                    rightIndex: listRight.length ? this.properties.columns.length - listRight.length - 1 : 0
                })
            })
        },
    },
    methods: {
        onRowClick(e) {
            this.triggerEvent('rowClick', e.target.dataset)
        },
        onBtnClick(e) {
            this.triggerEvent('btnClick', e.target.dataset)
        }
    },
})