ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
103 lines • 17.3 kB
JavaScript
/**
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
*/
import { Injectable } from '@angular/core';
import { BehaviorSubject, combineLatest, Subject } from 'rxjs';
import { debounceTime, distinctUntilChanged, filter, map, skip, switchMap, takeUntil } from 'rxjs/operators';
export class NzTableDataService {
constructor() {
this.destroy$ = new Subject();
this.pageIndex$ = new BehaviorSubject(1);
this.frontPagination$ = new BehaviorSubject(true);
this.pageSize$ = new BehaviorSubject(10);
this.listOfData$ = new BehaviorSubject([]);
this.pageIndexDistinct$ = this.pageIndex$.pipe(distinctUntilChanged());
this.pageSizeDistinct$ = this.pageSize$.pipe(distinctUntilChanged());
this.listOfCalcOperator$ = new BehaviorSubject([]);
this.queryParams$ = combineLatest([
this.pageIndexDistinct$,
this.pageSizeDistinct$,
this.listOfCalcOperator$
]).pipe(debounceTime(0), skip(1), map(([pageIndex, pageSize, listOfCalc]) => ({
pageIndex,
pageSize,
sort: listOfCalc
.filter(item => item.sortFn)
.map(item => ({
key: item.key,
value: item.sortOrder
})),
filter: listOfCalc
.filter(item => item.filterFn)
.map(item => ({
key: item.key,
value: item.filterValue
}))
})));
this.listOfDataAfterCalc$ = combineLatest([this.listOfData$, this.listOfCalcOperator$]).pipe(map(([listOfData, listOfCalcOperator]) => {
let listOfDataAfterCalc = [...listOfData];
const listOfFilterOperator = listOfCalcOperator.filter(item => {
const { filterValue, filterFn } = item;
const isReset = filterValue === null ||
filterValue === undefined ||
(Array.isArray(filterValue) && filterValue.length === 0);
return !isReset && typeof filterFn === 'function';
});
for (const item of listOfFilterOperator) {
const { filterFn, filterValue } = item;
listOfDataAfterCalc = listOfDataAfterCalc.filter(data => filterFn(filterValue, data));
}
const listOfSortOperator = listOfCalcOperator
.filter(item => item.sortOrder !== null && typeof item.sortFn === 'function')
.sort((a, b) => +b.sortPriority - +a.sortPriority);
if (listOfCalcOperator.length) {
listOfDataAfterCalc.sort((record1, record2) => {
for (const item of listOfSortOperator) {
const { sortFn, sortOrder } = item;
if (sortFn && sortOrder) {
const compareResult = sortFn(record1, record2, sortOrder);
if (compareResult !== 0) {
return sortOrder === 'ascend' ? compareResult : -compareResult;
}
}
}
return 0;
});
}
return listOfDataAfterCalc;
}));
this.listOfFrontEndCurrentPageData$ = combineLatest([
this.pageIndexDistinct$,
this.pageSizeDistinct$,
this.listOfDataAfterCalc$
]).pipe(takeUntil(this.destroy$), filter(value => {
const [pageIndex, pageSize, listOfData] = value;
const maxPageIndex = Math.ceil(listOfData.length / pageSize) || 1;
return pageIndex <= maxPageIndex;
}), map(([pageIndex, pageSize, listOfData]) => listOfData.slice((pageIndex - 1) * pageSize, pageIndex * pageSize)));
this.listOfCurrentPageData$ = this.frontPagination$.pipe(switchMap(pagination => (pagination ? this.listOfFrontEndCurrentPageData$ : this.listOfDataAfterCalc$)));
this.total$ = this.frontPagination$.pipe(switchMap(pagination => (pagination ? this.listOfDataAfterCalc$ : this.listOfData$)), map(list => list.length), distinctUntilChanged());
}
updatePageSize(size) {
this.pageSize$.next(size);
}
updateFrontPagination(pagination) {
this.frontPagination$.next(pagination);
}
updatePageIndex(index) {
this.pageIndex$.next(index);
}
updateListOfData(list) {
this.listOfData$.next(list);
}
ngOnDestroy() {
this.destroy$.next();
this.destroy$.complete();
}
}
NzTableDataService.decorators = [
{ type: Injectable }
];
NzTableDataService.ctorParameters = () => [];
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* Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport { Injectable, OnDestroy } from '@angular/core';\nimport { BehaviorSubject, combineLatest, Observable, Subject } from 'rxjs';\nimport { debounceTime, distinctUntilChanged, filter, map, skip, switchMap, takeUntil } from 'rxjs/operators';\n\nimport {\n  NzTableFilterFn,\n  NzTableFilterValue,\n  NzTableQueryParams,\n  NzTableSortFn,\n  NzTableSortOrder\n} from './table.types';\n\n@Injectable()\nexport class NzTableDataService<T> implements OnDestroy {\n  private destroy$ = new Subject();\n  private pageIndex$ = new BehaviorSubject<number>(1);\n  private frontPagination$ = new BehaviorSubject<boolean>(true);\n  private pageSize$ = new BehaviorSubject<number>(10);\n  private listOfData$ = new BehaviorSubject<readonly T[]>([]);\n  pageIndexDistinct$ = this.pageIndex$.pipe(distinctUntilChanged());\n  pageSizeDistinct$ = this.pageSize$.pipe(distinctUntilChanged());\n  listOfCalcOperator$ = new BehaviorSubject<\n    Array<{\n      key?: string;\n      sortFn: NzTableSortFn<T> | null | boolean;\n      sortOrder: NzTableSortOrder;\n      filterFn: NzTableFilterFn<T> | null | boolean;\n      filterValue: NzTableFilterValue;\n      sortPriority: number | boolean;\n    }>\n  >([]);\n  queryParams$: Observable<NzTableQueryParams> = combineLatest([\n    this.pageIndexDistinct$,\n    this.pageSizeDistinct$,\n    this.listOfCalcOperator$\n  ]).pipe(\n    debounceTime(0),\n    skip(1),\n    map(([pageIndex, pageSize, listOfCalc]) => ({\n      pageIndex,\n      pageSize,\n      sort: listOfCalc\n        .filter(item => item.sortFn)\n        .map(item => ({\n          key: item.key!,\n          value: item.sortOrder\n        })),\n      filter: listOfCalc\n        .filter(item => item.filterFn)\n        .map(item => ({\n          key: item.key!,\n          value: item.filterValue\n        }))\n    }))\n  );\n  private listOfDataAfterCalc$ = combineLatest([this.listOfData$, this.listOfCalcOperator$]).pipe(\n    map(([listOfData, listOfCalcOperator]) => {\n      let listOfDataAfterCalc = [...listOfData];\n      const listOfFilterOperator = listOfCalcOperator.filter(item => {\n        const { filterValue, filterFn } = item;\n        const isReset =\n          filterValue === null ||\n          filterValue === undefined ||\n          (Array.isArray(filterValue) && filterValue!.length === 0);\n        return !isReset && typeof filterFn === 'function';\n      });\n      for (const item of listOfFilterOperator) {\n        const { filterFn, filterValue } = item;\n        listOfDataAfterCalc = listOfDataAfterCalc.filter(data => (filterFn as NzTableFilterFn<T>)(filterValue, data));\n      }\n      const listOfSortOperator = listOfCalcOperator\n        .filter(item => item.sortOrder !== null && typeof item.sortFn === 'function')\n        .sort((a, b) => +b.sortPriority - +a.sortPriority);\n      if (listOfCalcOperator.length) {\n        listOfDataAfterCalc.sort((record1, record2) => {\n          for (const item of listOfSortOperator) {\n            const { sortFn, sortOrder } = item;\n            if (sortFn && sortOrder) {\n              const compareResult = (sortFn as NzTableSortFn<T>)(record1, record2, sortOrder);\n              if (compareResult !== 0) {\n                return sortOrder === 'ascend' ? compareResult : -compareResult;\n              }\n            }\n          }\n          return 0;\n        });\n      }\n      return listOfDataAfterCalc;\n    })\n  );\n  private listOfFrontEndCurrentPageData$ = combineLatest([\n    this.pageIndexDistinct$,\n    this.pageSizeDistinct$,\n    this.listOfDataAfterCalc$\n  ]).pipe(\n    takeUntil(this.destroy$),\n    filter(value => {\n      const [pageIndex, pageSize, listOfData] = value;\n      const maxPageIndex = Math.ceil(listOfData.length / pageSize) || 1;\n      return pageIndex <= maxPageIndex;\n    }),\n    map(([pageIndex, pageSize, listOfData]) => listOfData.slice((pageIndex - 1) * pageSize, pageIndex * pageSize))\n  );\n  listOfCurrentPageData$ = this.frontPagination$.pipe(\n    switchMap(pagination => (pagination ? this.listOfFrontEndCurrentPageData$ : this.listOfDataAfterCalc$))\n  );\n  total$ = this.frontPagination$.pipe(\n    switchMap(pagination => (pagination ? this.listOfDataAfterCalc$ : this.listOfData$)),\n    map(list => list.length),\n    distinctUntilChanged()\n  );\n\n  updatePageSize(size: number): void {\n    this.pageSize$.next(size);\n  }\n  updateFrontPagination(pagination: boolean): void {\n    this.frontPagination$.next(pagination);\n  }\n  updatePageIndex(index: number): void {\n    this.pageIndex$.next(index);\n  }\n  updateListOfData(list: readonly T[]): void {\n    this.listOfData$.next(list);\n  }\n  constructor() {}\n  ngOnDestroy(): void {\n    this.destroy$.next();\n    this.destroy$.complete();\n  }\n}\n"]}