import { isFunction } from '@/utils/is';
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import type { BasicTableProps, TableRowSelection } from '../types/table';
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import { computed, ComputedRef, nextTick, Ref, ref, toRaw, unref, watch } from 'vue';
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import { ROW_KEY } from '../const';
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import { omit } from 'lodash-es';
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import { findNodeAll } from '@/utils/helper/treeHelper';
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import type { Key } from 'ant-design-vue/lib/table/interface';
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import { parseRowKey, parseRowKeyValue } from '../helper';
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export function useRowSelection(
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propsRef: ComputedRef<BasicTableProps>,
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tableData: Ref<Recordable[]>,
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emit: EmitType,
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) {
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const selectedRowKeysRef = ref<Key[]>([]);
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const selectedRowRef = ref<Recordable[]>([]);
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const getRowSelectionRef = computed((): TableRowSelection | null => {
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const { rowSelection } = unref(propsRef);
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if (!rowSelection) {
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return null;
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}
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return {
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selectedRowKeys: unref(selectedRowKeysRef),
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onChange: (selectedRowKeys: Key[], selectedRows: any[], isClickCustomRow?: boolean) => {
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if (isClickCustomRow) {
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// 点击行触发
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// 维持外部定义的 onChange 回调
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rowSelection.onChange?.(selectedRowKeys, selectedRows);
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} else {
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// 点击 checkbox/radiobox 触发
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// 取出【当前页】所有 keyValues
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const currentPageKeys = tableData.value.map((o) => parseRowKeyValue(unref(getRowKey), o));
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// 从【所有分页】已选的 keyValues，且属于【当前页】的部分
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for (const selectedKey of selectedRowKeysRef.value.filter((k) =>
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currentPageKeys.includes(k),
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)) {
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// 判断是否已经不存在于【当前页】
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if (selectedRowKeys.findIndex((k) => k === selectedKey) < 0) {
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// 不存在 = 取消勾选
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const removeIndex = selectedRowKeysRef.value.findIndex((k) => k === selectedKey);
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if (removeIndex > -1) {
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// 取消勾选
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selectedRowKeysRef.value.splice(removeIndex, 1);
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selectedRowRef.value.splice(removeIndex, 1);
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}
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}
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}
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// 存在于【当前页】，但不存在于【所有分页】，则认为是新增的
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for (const selectedKey of selectedRowKeys) {
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const existIndex = selectedRowKeysRef.value.findIndex((k) => k === selectedKey);
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if (existIndex < 0) {
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// 新增勾选
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selectedRowKeysRef.value.push(selectedKey);
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const record = selectedRows.find(
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(o) => parseRowKeyValue(unref(getRowKey), o) === selectedKey,
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);
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if (record) {
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selectedRowRef.value.push(record);
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}
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}
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}
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// 赋值调整过的值
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setSelectedRowKeys(selectedRowKeysRef.value);
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// 维持外部定义的onChange回调
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rowSelection.onChange?.(selectedRowKeysRef.value, selectedRowRef.value);
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}
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},
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...omit(rowSelection, ['onChange']),
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};
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});
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watch(
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() => unref(propsRef).rowSelection?.selectedRowKeys,
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(v?: Key[]) => {
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setSelectedRowKeys(v);
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},
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);
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watch(
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() => unref(selectedRowKeysRef),
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() => {
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nextTick(() => {
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const { rowSelection } = unref(propsRef);
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if (rowSelection) {
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const { onChange } = rowSelection;
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if (onChange && isFunction(onChange)) onChange(getSelectRowKeys(), getSelectRows(), true);
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}
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emit('selection-change', {
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keys: getSelectRowKeys(),
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rows: getSelectRows(),
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});
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});
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},
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{ deep: true },
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);
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const getAutoCreateKey = computed(() => {
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return unref(propsRef).autoCreateKey && !unref(propsRef).rowKey;
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});
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const getRowKey = computed(() => {
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const { rowKey } = unref(propsRef);
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return unref(getAutoCreateKey) ? ROW_KEY : rowKey;
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});
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function setSelectedRowKeys(keyValues?: Key[]) {
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selectedRowKeysRef.value = keyValues || [];
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const rows = toRaw(unref(tableData)).concat(toRaw(unref(selectedRowRef)));
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const allSelectedRows = findNodeAll(
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rows,
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(item) => keyValues?.includes(parseRowKeyValue(unref(getRowKey), item)),
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{
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children: propsRef.value.childrenColumnName ?? 'children',
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},
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);
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const trueSelectedRows: any[] = [];
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keyValues?.forEach((keyValue: Key) => {
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const found = allSelectedRows.find(
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(item) => parseRowKeyValue(unref(getRowKey), item) === keyValue,
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);
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if (found) {
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trueSelectedRows.push(found);
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} else {
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// 跨页的时候，非本页数据无法得到，暂如此处理
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// tableData or selectedRowRef 总有数据
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if (rows[0]) {
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trueSelectedRows.push({ [parseRowKey(unref(getRowKey), rows[0])]: keyValue });
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}
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}
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});
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selectedRowRef.value = trueSelectedRows;
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}
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function setSelectedRows(rows: Recordable[]) {
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selectedRowRef.value = rows;
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selectedRowKeysRef.value = selectedRowRef.value.map((o) =>
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parseRowKeyValue(unref(getRowKey), o),
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);
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}
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function clearSelectedRowKeys() {
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selectedRowRef.value = [];
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selectedRowKeysRef.value = [];
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}
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function deleteSelectRowByKey(key: Key) {
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const selectedRowKeys = unref(selectedRowKeysRef);
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const index = selectedRowKeys.findIndex((item) => item === key);
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if (index !== -1) {
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unref(selectedRowKeysRef).splice(index, 1);
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}
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}
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function getSelectRowKeys() {
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return unref(selectedRowKeysRef);
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}
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function getSelectRows<T = Recordable>() {
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// const ret = toRaw(unref(selectedRowRef)).map((item) => toRaw(item));
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return unref(selectedRowRef) as T[];
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}
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function getRowSelection() {
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return unref(getRowSelectionRef)!;
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}
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return {
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getRowSelection,
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getRowSelectionRef,
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getSelectRows,
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getSelectRowKeys,
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setSelectedRowKeys,
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clearSelectedRowKeys,
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deleteSelectRowByKey,
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setSelectedRows,
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};
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}
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