import { arrayFindIndex } from 'element-ui/src/utils/util';
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import { getCell, getColumnByCell, getRowIdentity } from './util';
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import { getStyle, hasClass, removeClass, addClass } from 'element-ui/src/utils/dom';
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import ElCheckbox from 'element-ui/packages/checkbox';
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import ElTooltip from 'element-ui/packages/tooltip';
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import debounce from 'throttle-debounce/debounce';
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import LayoutObserver from './layout-observer';
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import { mapStates } from './store/helper';
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import TableRow from './table-row.js';
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export default {
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name: 'ElTableBody',
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mixins: [LayoutObserver],
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components: {
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ElCheckbox,
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ElTooltip,
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TableRow
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},
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props: {
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store: {
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required: true
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},
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stripe: Boolean,
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context: {},
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rowClassName: [String, Function],
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rowStyle: [Object, Function],
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fixed: String,
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highlight: Boolean
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},
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render(h) {
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const data = this.data || [];
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return (
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<table
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class="el-table__body"
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cellspacing="0"
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cellpadding="0"
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border="0">
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<colgroup>
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{
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this.columns.map(column => <col name={column.id} key={column.id} />)
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}
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</colgroup>
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<tbody>
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{
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data.reduce((acc, row) => {
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return acc.concat(this.wrappedRowRender(row, acc.length));
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}, [])
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}
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<el-tooltip effect={this.table.tooltipEffect} placement="top" ref="tooltip" content={this.tooltipContent}></el-tooltip>
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</tbody>
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</table>
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);
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},
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computed: {
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table() {
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return this.$parent;
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},
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...mapStates({
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data: 'data',
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columns: 'columns',
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treeIndent: 'indent',
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leftFixedLeafCount: 'fixedLeafColumnsLength',
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rightFixedLeafCount: 'rightFixedLeafColumnsLength',
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columnsCount: states => states.columns.length,
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leftFixedCount: states => states.fixedColumns.length,
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rightFixedCount: states => states.rightFixedColumns.length,
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hasExpandColumn: states => states.columns.some(({ type }) => type === 'expand')
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}),
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columnsHidden() {
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return this.columns.map((column, index) => this.isColumnHidden(index));
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},
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firstDefaultColumnIndex() {
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return arrayFindIndex(this.columns, ({ type }) => type === 'default');
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}
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},
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watch: {
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// don't trigger getter of currentRow in getCellClass. see https://jsfiddle.net/oe2b4hqt/
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// update DOM manually. see https://github.com/ElemeFE/element/pull/13954/files#diff-9b450c00d0a9dec0ffad5a3176972e40
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'store.states.hoverRow'(newVal, oldVal) {
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if (!this.store.states.isComplex || this.$isServer) return;
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let raf = window.requestAnimationFrame;
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if (!raf) {
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raf = (fn) => setTimeout(fn, 16);
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}
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raf(() => {
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const rows = this.$el.querySelectorAll('.el-table__row');
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const oldRow = rows[oldVal];
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const newRow = rows[newVal];
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if (oldRow) {
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removeClass(oldRow, 'hover-row');
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}
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if (newRow) {
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addClass(newRow, 'hover-row');
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}
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});
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}
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},
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data() {
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return {
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tooltipContent: ''
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};
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},
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created() {
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this.activateTooltip = debounce(50, tooltip => tooltip.handleShowPopper());
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},
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methods: {
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getKeyOfRow(row, index) {
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const rowKey = this.table.rowKey;
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if (rowKey) {
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return getRowIdentity(row, rowKey);
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}
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return index;
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},
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isColumnHidden(index) {
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if (this.fixed === true || this.fixed === 'left') {
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return index >= this.leftFixedLeafCount;
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} else if (this.fixed === 'right') {
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return index < this.columnsCount - this.rightFixedLeafCount;
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} else {
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return (index < this.leftFixedLeafCount) || (index >= this.columnsCount - this.rightFixedLeafCount);
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}
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},
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getSpan(row, column, rowIndex, columnIndex) {
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let rowspan = 1;
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let colspan = 1;
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const fn = this.table.spanMethod;
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if (typeof fn === 'function') {
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const result = fn({
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row,
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column,
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rowIndex,
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columnIndex
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});
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if (Array.isArray(result)) {
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rowspan = result[0];
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colspan = result[1];
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} else if (typeof result === 'object') {
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rowspan = result.rowspan;
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colspan = result.colspan;
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}
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}
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return { rowspan, colspan };
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},
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getRowStyle(row, rowIndex) {
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const rowStyle = this.table.rowStyle;
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if (typeof rowStyle === 'function') {
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return rowStyle.call(null, {
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row,
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rowIndex
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});
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}
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return rowStyle || null;
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},
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getRowClass(row, rowIndex) {
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const classes = ['el-table__row'];
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if (this.table.highlightCurrentRow && row === this.store.states.currentRow) {
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classes.push('current-row');
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}
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if (this.stripe && rowIndex % 2 === 1) {
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classes.push('el-table__row--striped');
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}
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const rowClassName = this.table.rowClassName;
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if (typeof rowClassName === 'string') {
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classes.push(rowClassName);
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} else if (typeof rowClassName === 'function') {
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classes.push(rowClassName.call(null, {
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row,
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rowIndex
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}));
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}
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if (this.store.states.expandRows.indexOf(row) > -1) {
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classes.push('expanded');
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}
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return classes;
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},
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getCellStyle(rowIndex, columnIndex, row, column) {
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const cellStyle = this.table.cellStyle;
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if (typeof cellStyle === 'function') {
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return cellStyle.call(null, {
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rowIndex,
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columnIndex,
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row,
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column
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});
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}
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return cellStyle;
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},
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getCellClass(rowIndex, columnIndex, row, column) {
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const classes = [column.id, column.align, column.className];
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if (this.isColumnHidden(columnIndex)) {
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classes.push('is-hidden');
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}
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const cellClassName = this.table.cellClassName;
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if (typeof cellClassName === 'string') {
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classes.push(cellClassName);
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} else if (typeof cellClassName === 'function') {
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classes.push(cellClassName.call(null, {
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rowIndex,
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columnIndex,
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row,
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column
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}));
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}
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classes.push('el-table__cell');
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return classes.join(' ');
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},
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getColspanRealWidth(columns, colspan, index) {
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if (colspan < 1) {
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return columns[index].realWidth;
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}
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const widthArr = columns.map(({ realWidth }) => realWidth).slice(index, index + colspan);
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return widthArr.reduce((acc, width) => acc + width, -1);
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},
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handleCellMouseEnter(event, row) {
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const table = this.table;
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const cell = getCell(event);
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if (cell) {
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const column = getColumnByCell(table, cell);
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const hoverState = table.hoverState = { cell, column, row };
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table.$emit('cell-mouse-enter', hoverState.row, hoverState.column, hoverState.cell, event);
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}
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// 判断是否text-overflow, 如果是就显示tooltip
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const cellChild = event.target.querySelector('.cell');
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if (!(hasClass(cellChild, 'el-tooltip') && cellChild.childNodes.length)) {
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return;
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}
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// use range width instead of scrollWidth to determine whether the text is overflowing
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// to address a potential FireFox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1074543#c3
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const range = document.createRange();
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range.setStart(cellChild, 0);
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range.setEnd(cellChild, cellChild.childNodes.length);
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const rangeWidth = range.getBoundingClientRect().width;
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const padding = (parseInt(getStyle(cellChild, 'paddingLeft'), 10) || 0) +
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(parseInt(getStyle(cellChild, 'paddingRight'), 10) || 0);
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if ((rangeWidth + padding > cellChild.offsetWidth || cellChild.scrollWidth > cellChild.offsetWidth) && this.$refs.tooltip) {
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const tooltip = this.$refs.tooltip;
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// TODO 会引起整个 Table 的重新渲染，需要优化
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this.tooltipContent = cell.innerText || cell.textContent;
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tooltip.referenceElm = cell;
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tooltip.$refs.popper && (tooltip.$refs.popper.style.display = 'none');
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tooltip.doDestroy();
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tooltip.setExpectedState(true);
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this.activateTooltip(tooltip);
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}
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},
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handleCellMouseLeave(event) {
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const tooltip = this.$refs.tooltip;
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if (tooltip) {
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tooltip.setExpectedState(false);
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tooltip.handleClosePopper();
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}
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const cell = getCell(event);
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if (!cell) return;
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const oldHoverState = this.table.hoverState || {};
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this.table.$emit('cell-mouse-leave', oldHoverState.row, oldHoverState.column, oldHoverState.cell, event);
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},
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handleMouseEnter: debounce(30, function(index) {
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this.store.commit('setHoverRow', index);
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}),
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handleMouseLeave: debounce(30, function() {
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this.store.commit('setHoverRow', null);
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}),
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handleContextMenu(event, row) {
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this.handleEvent(event, row, 'contextmenu');
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},
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handleDoubleClick(event, row) {
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this.handleEvent(event, row, 'dblclick');
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},
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handleClick(event, row) {
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this.store.commit('setCurrentRow', row);
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this.handleEvent(event, row, 'click');
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},
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handleEvent(event, row, name) {
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const table = this.table;
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const cell = getCell(event);
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let column;
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if (cell) {
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column = getColumnByCell(table, cell);
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if (column) {
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table.$emit(`cell-${name}`, row, column, cell, event);
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}
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}
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table.$emit(`row-${name}`, row, column, event);
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},
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rowRender(row, $index, treeRowData) {
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const { treeIndent, columns, firstDefaultColumnIndex } = this;
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const rowClasses = this.getRowClass(row, $index);
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let display = true;
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if (treeRowData) {
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rowClasses.push('el-table__row--level-' + treeRowData.level);
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display = treeRowData.display;
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}
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// 指令 v-show 会覆盖 row-style 中 display
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// 使用 :style 代替 v-show https://github.com/ElemeFE/element/issues/16995
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let displayStyle = display ? null : {
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display: 'none'
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};
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return (
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<TableRow
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style={[displayStyle, this.getRowStyle(row, $index)]}
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class={rowClasses}
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key={this.getKeyOfRow(row, $index)}
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nativeOn-dblclick={($event) => this.handleDoubleClick($event, row)}
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nativeOn-click={($event) => this.handleClick($event, row)}
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nativeOn-contextmenu={($event) => this.handleContextMenu($event, row)}
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nativeOn-mouseenter={_ => this.handleMouseEnter($index)}
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nativeOn-mouseleave={this.handleMouseLeave}
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columns={columns}
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row={row}
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index={$index}
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store={this.store}
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context={this.context || this.table.$vnode.context}
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firstDefaultColumnIndex={firstDefaultColumnIndex}
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treeRowData={treeRowData}
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treeIndent={treeIndent}
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columnsHidden={this.columnsHidden}
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getSpan={this.getSpan}
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getColspanRealWidth={this.getColspanRealWidth}
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getCellStyle={this.getCellStyle}
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getCellClass={this.getCellClass}
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handleCellMouseEnter={this.handleCellMouseEnter}
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handleCellMouseLeave={this.handleCellMouseLeave}
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isSelected={this.store.isSelected(row)}
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isExpanded={this.store.states.expandRows.indexOf(row) > -1}
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fixed={this.fixed}
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>
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</TableRow>
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);
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},
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wrappedRowRender(row, $index) {
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const store = this.store;
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const { isRowExpanded, assertRowKey } = store;
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const { treeData, lazyTreeNodeMap, childrenColumnName, rowKey } = store.states;
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if (this.hasExpandColumn && isRowExpanded(row)) {
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const renderExpanded = this.table.renderExpanded;
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const tr = this.rowRender(row, $index);
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if (!renderExpanded) {
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console.error('[Element Error]renderExpanded is required.');
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return tr;
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}
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// 使用二维数组，避免修改 $index
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return [[
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tr,
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<tr key={'expanded-row__' + tr.key}>
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<td colspan={ this.columnsCount } class="el-table__cell el-table__expanded-cell">
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{ renderExpanded(this.$createElement, { row, $index, store: this.store }) }
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</td>
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</tr>]];
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} else if (Object.keys(treeData).length) {
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assertRowKey();
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// TreeTable 时，rowKey 必须由用户设定，不使用 getKeyOfRow 计算
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// 在调用 rowRender 函数时，仍然会计算 rowKey，不太好的操作
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const key = getRowIdentity(row, rowKey);
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let cur = treeData[key];
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let treeRowData = null;
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if (cur) {
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treeRowData = {
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expanded: cur.expanded,
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level: cur.level,
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display: true
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};
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if (typeof cur.lazy === 'boolean') {
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if (typeof cur.loaded === 'boolean' && cur.loaded) {
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treeRowData.noLazyChildren = !(cur.children && cur.children.length);
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}
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treeRowData.loading = cur.loading;
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}
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}
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const tmp = [this.rowRender(row, $index, treeRowData)];
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// 渲染嵌套数据
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if (cur) {
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// currentRow 记录的是 index，所以还需主动增加 TreeTable 的 index
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let i = 0;
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const traverse = (children, parent) => {
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if (!(children && children.length && parent)) return;
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children.forEach(node => {
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// 父节点的 display 状态影响子节点的显示状态
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const innerTreeRowData = {
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display: parent.display && parent.expanded,
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level: parent.level + 1
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};
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const childKey = getRowIdentity(node, rowKey);
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if (childKey === undefined || childKey === null) {
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throw new Error('for nested data item, row-key is required.');
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}
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cur = { ...treeData[childKey] };
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// 对于当前节点，分成有无子节点两种情况。
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// 如果包含子节点的，设置 expanded 属性。
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// 对于它子节点的 display 属性由它本身的 expanded 与 display 共同决定。
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if (cur) {
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innerTreeRowData.expanded = cur.expanded;
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// 懒加载的某些节点，level 未知
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cur.level = cur.level || innerTreeRowData.level;
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cur.display = !!(cur.expanded && innerTreeRowData.display);
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if (typeof cur.lazy === 'boolean') {
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if (typeof cur.loaded === 'boolean' && cur.loaded) {
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innerTreeRowData.noLazyChildren = !(cur.children && cur.children.length);
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}
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innerTreeRowData.loading = cur.loading;
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}
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}
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i++;
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tmp.push(this.rowRender(node, $index + i, innerTreeRowData));
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if (cur) {
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const nodes = lazyTreeNodeMap[childKey] || node[childrenColumnName];
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traverse(nodes, cur);
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}
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});
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};
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// 对于 root 节点，display 一定为 true
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cur.display = true;
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const nodes = lazyTreeNodeMap[key] || row[childrenColumnName];
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traverse(nodes, cur);
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}
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return tmp;
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} else {
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return this.rowRender(row, $index);
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}
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}
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}
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};
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