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All datasources done. Now to wire them up in the components.

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Plus ElementRefs are now optional as they cannot be initialized
This commit is contained in:
Amritanshu Agrawal
2020-11-23 10:25:53 +05:30
parent 39e3cc51bb
commit af343cb7f9
66 changed files with 556 additions and 328 deletions
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25
overlord/src/app/role/role-list/role-list-datasource.ts
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@ -1,26 +1,30 @@
import { DataSource } from '@angular/cdk/collections';
import { MatPaginator } from '@angular/material/paginator';
import { MatSort } from '@angular/material/sort';
import { EventEmitter } from '@angular/core';
import { MatPaginator, PageEvent } from '@angular/material/paginator';
import { MatSort, Sort } from '@angular/material/sort';
import { merge, Observable, of as observableOf } from 'rxjs';
import { map } from 'rxjs/operators';
import { Role } from '../role';
/** Simple sort comparator for example ID/Name columns (for client-side sorting). */
function compare(a, b, isAsc) {
function compare(a: string | number, b: string | number, isAsc: boolean) {
return (a < b ? -1 : 1) * (isAsc ? 1 : -1);
}
export class RoleListDatasource extends DataSource<Role> {
constructor(private paginator: MatPaginator, private sort: MatSort, public data: Role[]) {
constructor(public data: Role[], private paginator?: MatPaginator, private sort?: MatSort) {
super();
}
connect(): Observable<Role[]> {
const dataMutations = [observableOf(this.data), this.paginator.page, this.sort.sortChange];
const dataMutations: (Observable<Role[]> | EventEmitter<PageEvent> | EventEmitter<Sort>)[] = [
observableOf(this.data),
];
if (this.paginator) dataMutations.push((this.paginator as MatPaginator).page);
if (this.sort) dataMutations.push((this.sort as MatSort).sortChange);
// Set the paginators length
this.paginator.length = this.data.length;
if (this.paginator) this.paginator.length = this.data.length;
return merge(...dataMutations).pipe(
map(() => this.getPagedData(this.getSortedData([...this.data]))),
@ -30,18 +34,21 @@ export class RoleListDatasource extends DataSource<Role> {
disconnect() {}
private getPagedData(data: Role[]) {
if (this.paginator === undefined) return data;
const startIndex = this.paginator.pageIndex * this.paginator.pageSize;
return data.splice(startIndex, this.paginator.pageSize);
}
private getSortedData(data: Role[]) {
if (this.sort === undefined) return data;
if (!this.sort.active || this.sort.direction === '') {
return data;
}
const sort = this.sort as MatSort;
return data.sort((a, b) => {
const isAsc = this.sort.direction === 'asc';
switch (this.sort.active) {
const isAsc = sort.direction === 'asc';
switch (sort.active) {
case 'name':
return compare(a.name, b.name, isAsc);
case 'id':