uni-table 改造源码 添加固定表头功能 附件修改后源码

github地址:https://github.com/1205093639/uni-table-Fixed_header
实现效果:

1.先找到源码 复制出来单独封装成自己的组件

uni-table 改造源码 添加固定表头功能 附件修改后源码_第1张图片

2.修改

2.1 uni-table

无需改动

2.2 uni-tbody

uni-table 改造源码 添加固定表头功能 附件修改后源码_第2张图片

<template>
    <!-- #ifdef H5 -->
    <tbody class="uni-tbody" :style="{'max-height':height}">
        <slot></slot>
    </tbody>
    <!-- #endif -->
    <!-- #ifndef H5 -->
    <view class="uni-tbody" :style="{'max-height':height}">
        <slot></slot>
    </view>
    <!-- #endif -->
</template>

<script>
export default {
    name: 'uniBody',
    props: ['height'],
    options: {
        virtualHost: true
    },
    data() {
        return {

        }
    },
    created() { },
    methods: {}
}
</script>

<style>
.uni-tbody {
    display: block;
    width: 100%;
    overflow: auto;
}
</style>

2.3 uni-table-td

<template>
    <!-- #ifdef H5 -->
    <td class="uni-table-td" :rowspan="rowspan" :colspan="colspan" :class="{'table--border':border}" :style="{'max-width':width + 'px','text-align':align}">
        <slot></slot>
    </td>
    <!-- #endif -->
    <!-- #ifndef H5 -->
    <!-- :class="{'table--border':border}"  -->
    <view class="uni-table-td" :class="{'table--border':border}" :style="{'max-width':width + 'px','text-align':align}">
        <slot></slot>
    </view>
    <!-- #endif -->
</template>

<script>
/**
 * Td 单元格
 * @description 表格中的标准单元格组件
 * @tutorial https://ext.dcloud.net.cn/plugin?id=3270
 * @property {Number} 	align = [left|center|right]	单元格对齐方式
 */
export default {
    name: 'uniTd',
    options: {
        virtualHost: true
    },
    props: {
        width: {
            type: [String, Number],
            default: ''
        },
        align: {
            type: String,
            default: 'left'
        },
        rowspan: {
            type: [Number, String],
            default: 1
        },
        colspan: {
            type: [Number, String],
            default: 1
        }
    },
    data() {
        return {
            border: false
        };
    },
    created() {
        this.root = this.getTable()
        this.border = this.root.border
    },
    methods: {
        /**
         * 获取父元素实例
         */
        getTable() {
            let parent = this.$parent;
            let parentName = parent.$options.name;
            while (parentName !== 'uniTable') {
                parent = parent.$parent;
                if (!parent) return false;
                parentName = parent.$options.name;
            }
            return parent;
        },
    }
}
</script>

<style lang="scss">
$border-color: #ebeef5;

.uni-table-td {
    display: table-cell;
    padding: 8px 10px;
    font-size: 14px;
    border-bottom: 1px $border-color solid;
    font-weight: 400;
    color: #606266;
    line-height: 23px;
    box-sizing: border-box;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    word-break: break-all;
    word-wrap: break-word;
}
.table--border {
    border-right: 1px $border-color solid;
}
</style>

2.4 uni-table-th

<template>
    <!-- #ifdef H5 -->
    <th :rowspan="rowspan" :colspan="colspan" class="uni-table-th" :class="{ 'table--border': border }" :style="{ 'max-width': width + 'px', 'text-align': align }">
        <view class="uni-table-th-row">
            <view class="uni-table-th-content" :style="{ 'justify-content': contentAlign }" @click="sort">
                <slot></slot>
                <view v-if="sortable" class="arrow-box">
                    <text class="arrow up" :class="{ active: ascending }" @click.stop="ascendingFn"></text>
                    <text class="arrow down" :class="{ active: descending }" @click.stop="descendingFn"></text>
                </view>
            </view>
            <dropdown v-if="filterType || filterData.length" :filterData="filterData" :filterType="filterType" @change="ondropdown"></dropdown>
        </view>
    </th>
    <!-- #endif -->
    <!-- #ifndef H5 -->
    <view class="uni-table-th" :class="{ 'table--border': border }" :style="{ 'max-width': width + 'px', 'text-align': align }">
        <slot></slot>
    </view>
    <!-- #endif -->
</template>

<script>
import dropdown from './filter-dropdown.vue'
/**
 * Th 表头
 * @description 表格内的表头单元格组件
 * @tutorial https://ext.dcloud.net.cn/plugin?id=3270
 * @property {Number} 	width 						单元格宽度
 * @property {Boolean} 	sortable 					是否启用排序
 * @property {Number} 	align = [left|center|right]	单元格对齐方式
 * @value left   	单元格文字左侧对齐
 * @value center	单元格文字居中
 * @value right		单元格文字右侧对齐
 * @property {Array}	filterData 筛选数据
 * @property {String}	filterType	[search|select] 筛选类型
 * @value search	关键字搜素
 * @value select	条件选择
 * @event {Function} sort-change 排序触发事件
 */
export default {
    name: 'uniTh',
    options: {
        virtualHost: true
    },
    components: {
        dropdown
    },
    emits: ['sort-change', 'filter-change'],
    props: {
        width: {
            type: [String, Number],
            default: ''
        },
        align: {
            type: String,
            default: 'left'
        },
        rowspan: {
            type: [Number, String],
            default: 1
        },
        colspan: {
            type: [Number, String],
            default: 1
        },
        sortable: {
            type: Boolean,
            default: false
        },
        filterType: {
            type: String,
            default: ""
        },
        filterData: {
            type: Array,
            default() {
                return []
            }
        }
    },
    data() {
        return {
            border: false,
            ascending: false,
            descending: false
        }
    },
    computed: {
        contentAlign() {
            let align = 'left'
            switch (this.align) {
                case 'left':
                    align = 'flex-start'
                    break
                case 'center':
                    align = 'center'
                    break
                case 'right':
                    align = 'flex-end'
                    break
            }
            return align
        }
    },
    created() {
        this.root = this.getTable('uniTable')
        this.rootTr = this.getTable('uniTr')
        this.rootTr.minWidthUpdate(this.width ? this.width : 140)
        this.border = this.root.border
        this.root.thChildren.push(this)
    },
    methods: {
        sort() {
            if (!this.sortable) return
            this.clearOther()
            if (!this.ascending && !this.descending) {
                this.ascending = true
                this.$emit('sort-change', { order: 'ascending' })
                return
            }
            if (this.ascending && !this.descending) {
                this.ascending = false
                this.descending = true
                this.$emit('sort-change', { order: 'descending' })
                return
            }

            if (!this.ascending && this.descending) {
                this.ascending = false
                this.descending = false
                this.$emit('sort-change', { order: null })
            }
        },
        ascendingFn() {
            this.clearOther()
            this.ascending = !this.ascending
            this.descending = false
            this.$emit('sort-change', { order: this.ascending ? 'ascending' : null })
        },
        descendingFn() {
            this.clearOther()
            this.descending = !this.descending
            this.ascending = false
            this.$emit('sort-change', { order: this.descending ? 'descending' : null })
        },
        clearOther() {
            this.root.thChildren.map(item => {
                if (item !== this) {
                    item.ascending = false
                    item.descending = false
                }
                return item
            })
        },
        ondropdown(e) {
            this.$emit("filter-change", e)
        },
        /**
         * 获取父元素实例
         */
        getTable(name) {
            let parent = this.$parent
            let parentName = parent.$options.name
            while (parentName !== name) {
                parent = parent.$parent
                if (!parent) return false
                parentName = parent.$options.name
            }
            return parent
        }
    }
}
</script>

<style lang="scss">
$border-color: #ebeef5;

.uni-table-th {
    padding: 12px 10px;
    /* #ifndef APP-NVUE */
    display: table-cell;
    box-sizing: border-box;
    /* #endif */
    font-size: 14px;
    font-weight: bold;
    color: #909399;
    border-bottom: 1px $border-color solid;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.uni-table-th-row {
    /* #ifndef APP-NVUE */
    display: flex;
    /* #endif */
    flex-direction: row;
}

.table--border {
    border-right: 1px $border-color solid;
}
.uni-table-th-content {
    display: flex;
    align-items: center;
    flex: 1;
}
.arrow-box {
}
.arrow {
    display: block;
    position: relative;
    width: 10px;
    height: 8px;
    // border: 1px red solid;
    left: 5px;
    overflow: hidden;
    cursor: pointer;
}
.down {
    top: 3px;
    ::after {
        content: '';
        width: 8px;
        height: 8px;
        position: absolute;
        left: 2px;
        top: -5px;
        transform: rotate(45deg);
        background-color: #ccc;
    }
    &.active {
        ::after {
            background-color: #007aff;
        }
    }
}
.up {
    ::after {
        content: '';
        width: 8px;
        height: 8px;
        position: absolute;
        left: 2px;
        top: 5px;
        transform: rotate(45deg);
        background-color: #ccc;
    }
    &.active {
        ::after {
            background-color: #007aff;
        }
    }
}
</style>

2.5 uni-table-thead

<template>
	<!-- #ifdef H5 -->
	<thead class="uni-table-thead">
		<tr class="uni-table-tr">
			<th :rowspan="rowspan" colspan="1" class="checkbox" :class="{ 'tr-table--border': border }">
				<table-checkbox :indeterminate="indeterminate" :checked="checked" @checkboxSelected="checkboxSelected"></table-checkbox>
			</th>
		</tr>
		<slot></slot>
	</thead>
	<!-- #endif -->
	<!-- #ifndef H5 -->
	<view class="uni-table-thead"><slot></slot></view>
	<!-- #endif -->
</template>

<script>
import tableCheckbox from '../uni-tr/table-checkbox.vue'
export default {
	name: 'uniThead',
	components: {
		tableCheckbox
	},
	options: {
		virtualHost: true
	},
	data() {
		return {
			border: false,
			selection: false,
			rowspan: 1,
			indeterminate: false,
			checked: false
		}
	},
	created() {
		this.root = this.getTable()
		// #ifdef H5
		this.root.theadChildren = this
		// #endif
		this.border = this.root.border
		this.selection = this.root.type
	},
	methods: {
		init(self) {
			this.rowspan++
		},
		checkboxSelected(e) {
			this.indeterminate = false
			const backIndexData = this.root.backIndexData
			const data = this.root.trChildren.filter(v => !v.disabled && v.keyValue)
			if (backIndexData.length === data.length) {
				this.checked = false
				this.root.clearSelection()
			} else {
				this.checked = true
				this.root.selectionAll()
			}
		},
		/**
		 * 获取父元素实例
		 */
		getTable(name = 'uniTable') {
			let parent = this.$parent
			let parentName = parent.$options.name
			while (parentName !== name) {
				parent = parent.$parent
				if (!parent) return false
				parentName = parent.$options.name
			}
			return parent
		}
	}
}
</script>

<style lang="scss">
$border-color: #ebeef5;

.uni-table-thead {
	display: table-header-group;
}

.uni-table-tr {
	/* #ifndef APP-NVUE */
	display: table-row;
	transition: all 0.3s;
	box-sizing: border-box;
	/* #endif */
	border: 1px red solid;
	background-color: #fafafa;
}

.checkbox {
	padding: 0 8px;
	width: 26px;
	padding-left: 12px;
	/* #ifndef APP-NVUE */
	display: table-cell;
	vertical-align: middle;
	/* #endif */
	color: #333;
	font-weight: 500;
	border-bottom: 1px $border-color solid;
	font-size: 14px;
	// text-align: center;
}

.tr-table--border {
	border-right: 1px $border-color solid;
}

/* #ifndef APP-NVUE */
.uni-table-tr {
	::v-deep .uni-table-th {
		&.table--border:last-child {
			// border-right: none;
		}
	}

	::v-deep .uni-table-td {
		&.table--border:last-child {
			// border-right: none;
		}
	}
}

/* #endif */
</style>

2.6 uni-table-tr

<template>
	<!-- #ifdef H5 -->
	<tr class="uni-table-tr">
		<th v-if="selection === 'selection' && ishead" class="checkbox" :class="{ 'tr-table--border': border }">
			<table-checkbox :checked="checked" :indeterminate="indeterminate" :disabled="disabled" @checkboxSelected="checkboxSelected"></table-checkbox>
		</th>
		<slot></slot>
		<!-- <uni-th class="th-fixed">123</uni-th> -->
	</tr>
	<!-- #endif -->
	<!-- #ifndef H5 -->
	<view class="uni-table-tr">
		<view v-if="selection === 'selection' " class="checkbox" :class="{ 'tr-table--border': border }">
			<table-checkbox :checked="checked" :indeterminate="indeterminate" :disabled="disabled" @checkboxSelected="checkboxSelected"></table-checkbox>
		</view>
		<slot></slot>
	</view>
	<!-- #endif -->
</template>

<script>
	import tableCheckbox from './table-checkbox.vue'
/**
 * Tr 表格行组件
 * @description 表格行组件 仅包含 th,td 组件
 * @tutorial https://ext.dcloud.net.cn/plugin?id=
 */
export default {
	name: 'uniTr',
	components: { tableCheckbox },
	props: {
		disabled: {
			type: Boolean,
			default: false
		},
		keyValue: {
			type: [String, Number],
			default: ''
		}
	},
	options: {
		virtualHost: true
	},
	data() {
		return {
			value: false,
			border: false,
			selection: false,
			widthThArr: [],
			ishead: true,
			checked: false,
			indeterminate:false
		}
	},
	created() {
		this.root = this.getTable()
		this.head = this.getTable('uniThead')
		if (this.head) {
			this.ishead = false
			this.head.init(this)
		}
		this.border = this.root.border
		this.selection = this.root.type
		this.root.trChildren.push(this)
		const rowData = this.root.data.find(v => v[this.root.rowKey] === this.keyValue)
		if(rowData){
			this.rowData = rowData
		}
		this.root.isNodata()
	},
	mounted() {
		if (this.widthThArr.length > 0) {
			const selectionWidth = this.selection === 'selection' ? 50 : 0
			this.root.minWidth = this.widthThArr.reduce((a, b) => Number(a) + Number(b)) + selectionWidth
		}
	},
	// #ifndef VUE3
	destroyed() {
		const index = this.root.trChildren.findIndex(i => i === this)
		this.root.trChildren.splice(index, 1)
		this.root.isNodata()
	},
	// #endif
	// #ifdef VUE3
	unmounted() {
		const index = this.root.trChildren.findIndex(i => i === this)
		this.root.trChildren.splice(index, 1)
		this.root.isNodata()
	},
	// #endif
	methods: {
		minWidthUpdate(width) {
			this.widthThArr.push(width)
		},
		// 选中
		checkboxSelected(e) {
			let rootData = this.root.data.find(v => v[this.root.rowKey] === this.keyValue)
			this.checked = e.checked
			this.root.check(rootData||this, e.checked,rootData? this.keyValue:null)
		},
		change(e) {
			this.root.trChildren.forEach(item => {
				if (item === this) {
					this.root.check(this, e.detail.value.length > 0 ? true : false)
				}
			})
		},
		/**
		 * 获取父元素实例
		 */
		getTable(name = 'uniTable') {
			let parent = this.$parent
			let parentName = parent.$options.name
			while (parentName !== name) {
				parent = parent.$parent
				if (!parent) return false
				parentName = parent.$options.name
			}
			return parent
		}
	}
}
</script>

<style lang="scss">
$border-color: #ebeef5;

.uni-table-tr {
	/* #ifndef APP-NVUE */
	display: table-row;
	transition: all 0.3s;
	box-sizing: border-box;
	 display:flex;
      width: 100%;
	/* #endif */
}

.checkbox {
	padding: 0 8px;
	width: 26px;
	padding-left: 12px;
	/* #ifndef APP-NVUE */
	display: table-cell;
	vertical-align: middle;
	/* #endif */
	color: #333;
	font-weight: 500;
	border-bottom: 1px $border-color solid;
	font-size: 14px;
	// text-align: center;
	
display: flex;
justify-content: center;
align-items: center;
}

.tr-table--border {
	border-right: 1px $border-color solid;
}

/* #ifndef APP-NVUE */
.uni-table-tr {
	::v-deep .uni-table-th {
		&.table--border:last-child {
			// border-right: none;
		}
	}

	::v-deep .uni-table-td {
		&.table--border:last-child {
			// border-right: none;
		}
	}
}

/* #endif */
</style>

3.页面使用

<uni-table border :loading="loading">
                <uni-tr>
                    <uni-th width='80'>序号</uni-th>
                    <uni-th>操作</uni-th>
                    <uni-th>收料单号</uni-th>
                    <uni-th>料号</uni-th>
                    <uni-th>进仓日期</uni-th>
                </uni-tr>
                <uni-tbody height="55vh">
                    <uni-tr v-for='(e,i) in tableData' :key='i'>
                        <uni-td width='80'>{{e.000}}</uni-td>
                        <uni-td>
                            <u-button size="small" @click="toPage(e)" type="primary" text="录入检验结果"></u-button>
                        </uni-td>
                        <uni-td>{{e.111}}</uni-td>
                        <uni-td>{{e.222}}</uni-td>
                        <uni-td>{{e.333}}</uni-td>
                    </uni-tr>
                </uni-tbody>
            </uni-table>

附件:本人已修改的uni_table源码 uni-ui版本1.4.12 提取码:6666

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