Open-ILS/src/eg2/src/app/staff/share/bib-list/bib-list.component.ts

   1 import {Component, Input, OnInit, ViewChild} from '@angular/core';
   2 import {Observable, empty, from} from 'rxjs';
   3 import {map, tap, switchMap} from 'rxjs/operators';
   4 import {IdlObject} from '@eg/core/idl.service';
   5 import {Pager} from '@eg/share/util/pager';
   6 import {NetService} from '@eg/core/net.service';
   7 import {PcrudService} from '@eg/core/pcrud.service';
   8 import {OrgService} from '@eg/core/org.service';
   9 import {GridComponent} from '@eg/share/grid/grid.component';
  10 import {GridContext, GridDataSource, GridCellTextGenerator} from '@eg/share/grid/grid';
  11 import {ComboboxEntry} from '@eg/share/combobox/combobox.component';
  12
  13
  14 /* Grid of bib records and associated actions. */
  15
  16 @Component({
  17   templateUrl: 'bib-list.component.html',
  18   selector: 'eg-bib-list'
  19 })
  20 export class BibListComponent implements OnInit {
  21
  22     // Static source of bib record IDs
  23     @Input() bibIds: number[];
  24     // Dynamic source of bib record IDs
  25     @Input() bibIdSource: (pager: Pager, sort: any) => Promise<number[]>;
  26     @Input() gridPersistKey: string;
  27
  28     dataSource: GridDataSource;
  29     cellTextGenerator: GridCellTextGenerator;
  30
  31     @ViewChild('grid', {static: false}) grid: GridComponent;
  32
  33     constructor(
  34         private net: NetService,
  35         private org: OrgService,
  36         private pcrud: PcrudService
  37     ) {
  38     }
  39
  40     ngOnInit() {
  41         this.dataSource = new GridDataSource();
  42
  43         this.dataSource.getRows = (pager: Pager, sort: any): Observable<any> => {
  44
  45             if (this.bibIds || this.bibIdSource) {
  46                 return this.loadIds(pager, sort);
  47             }
  48
  49             return empty();
  50         };
  51
  52         this.cellTextGenerator = {
  53             title: row => row.title
  54         };
  55     }
  56
  57     loadIds(pager: Pager, sort: any): Observable<any> {
  58
  59         let promise: Promise<number[]>;
  60
  61         if (this.bibIdSource) {
  62             promise = this.bibIdSource(pager, sort);
  63
  64         } else if (this.bibIds && this.bibIds.length > 0) {
  65             promise = Promise.resolve(
  66               this.bibIds.slice(pager.offset, pager.offset + pager.limit));
  67
  68         } else {
  69             return empty();
  70         }
  71
  72         return from(promise).pipe(switchMap(bibIds => {
  73
  74             if (bibIds.length === 0) { return empty(); }
  75
  76             return this.pcrud.search('rmsr', {id: bibIds}, {
  77                 order_by: {rmsr: 'id'},
  78                 flesh: 2,
  79                 flesh_fields: {
  80                     rmsr: ['biblio_record'],
  81                     bre: ['creator', 'editor']
  82                 }
  83             });
  84         }));
  85     }
  86 }
  87
  88