table-footer.js
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import LayoutObserver from './layout-observer';
export default {
name: 'ElTableFooter',
mixins: [LayoutObserver],
render(h) {
let sums = [];
if (this.summaryMethod) {
sums = this.summaryMethod({ columns: this.columns, data: this.store.states.data });
} else {
this.columns.forEach((column, index) => {
if (index === 0) {
sums[index] = this.sumText;
return;
}
const values = this.store.states.data.map(item => Number(item[column.property]));
const precisions = [];
let notNumber = true;
values.forEach(value => {
if (!isNaN(value)) {
notNumber = false;
let decimal = ('' + value).split('.')[1];
precisions.push(decimal ? decimal.length : 0);
}
});
const precision = Math.max.apply(null, precisions);
if (!notNumber) {
sums[index] = values.reduce((prev, curr) => {
const value = Number(curr);
if (!isNaN(value)) {
return parseFloat((prev + curr).toFixed(Math.min(precision, 20)));
} else {
return prev;
}
}, 0);
} else {
sums[index] = '';
}
});
}
return (
<table
class="el-table__footer"
cellspacing="0"
cellpadding="0"
border="0">
<colgroup>
{
this._l(this.columns, column => <col name={ column.id } />)
}
{
this.hasGutter ? <col name="gutter" /> : ''
}
</colgroup>
<tbody class={ [{ 'has-gutter': this.hasGutter }] }>
<tr>
{
this._l(this.columns, (column, cellIndex) =>
<td
colspan={ column.colSpan }
rowspan={ column.rowSpan }
class={ this.getRowClasses(column, cellIndex) }>
<div class={ ['cell', column.labelClassName] }>
{
sums[cellIndex]
}
</div>
</td>
)
}
{
this.hasGutter ? <th class="gutter"></th> : ''
}
</tr>
</tbody>
</table>
);
},
props: {
fixed: String,
store: {
required: true
},
summaryMethod: Function,
sumText: String,
border: Boolean,
defaultSort: {
type: Object,
default() {
return {
prop: '',
order: ''
};
}
}
},
computed: {
table() {
return this.$parent;
},
isAllSelected() {
return this.store.states.isAllSelected;
},
columnsCount() {
return this.store.states.columns.length;
},
leftFixedCount() {
return this.store.states.fixedColumns.length;
},
leftFixedLeafCount() {
return this.store.states.fixedLeafColumnsLength;
},
rightFixedLeafCount() {
return this.store.states.rightFixedLeafColumnsLength;
},
rightFixedCount() {
return this.store.states.rightFixedColumns.length;
},
columns() {
return this.store.states.columns;
},
hasGutter() {
return !this.fixed && this.tableLayout.gutterWidth;
}
},
methods: {
isCellHidden(index, columns, column) {
if (this.fixed === true || this.fixed === 'left') {
return index >= this.leftFixedLeafCount;
} else if (this.fixed === 'right') {
let before = 0;
for (let i = 0; i < index; i++) {
before += columns[i].colSpan;
}
return before < this.columnsCount - this.rightFixedLeafCount;
} else if (!this.fixed && column.fixed) { // hide cell when footer instance is not fixed and column is fixed
return true;
} else {
return (index < this.leftFixedCount) || (index >= this.columnsCount - this.rightFixedCount);
}
},
getRowClasses(column, cellIndex) {
const classes = [column.id, column.align, column.labelClassName];
if (column.className) {
classes.push(column.className);
}
if (this.isCellHidden(cellIndex, this.columns, column)) {
classes.push('is-hidden');
}
if (!column.children) {
classes.push('is-leaf');
}
return classes;
}
}
};