Open-ILS/src/eg2/src/app/staff/catalog/record/record.component.ts

   1 import {Component, OnInit, Input, ViewChild, HostListener} from '@angular/core';
   2 import {NgbTabset, NgbTabChangeEvent} from '@ng-bootstrap/ng-bootstrap';
   3 import {Router, ActivatedRoute, ParamMap} from '@angular/router';
   4 import {PcrudService} from '@eg/core/pcrud.service';
   5 import {IdlObject} from '@eg/core/idl.service';
   6 import {AuthService} from '@eg/core/auth.service';
   7 import {CatalogSearchContext, CatalogSearchState} from '@eg/share/catalog/search-context';
   8 import {CatalogService} from '@eg/share/catalog/catalog.service';
   9 import {BibRecordService, BibRecordSummary} from '@eg/share/catalog/bib-record.service';
  10 import {StaffCatalogService} from '../catalog.service';
  11 import {BibSummaryComponent} from '@eg/staff/share/bib-summary/bib-summary.component';
  12 import {StoreService} from '@eg/core/store.service';
  13 import {ConfirmDialogComponent} from '@eg/share/dialog/confirm.component';
  14 import {MarcEditorComponent} from '@eg/staff/share/marc-edit/editor.component';
  15 import {HoldingsMaintenanceComponent} from './holdings.component';
  16 import {HoldingsService} from '@eg/staff/share/holdings/holdings.service';
  17
  18 @Component({
  19   selector: 'eg-catalog-record',
  20   templateUrl: 'record.component.html'
  21 })
  22 export class RecordComponent implements OnInit {
  23
  24     recordId: number;
  25     recordTab: string;
  26     summary: BibRecordSummary;
  27     searchContext: CatalogSearchContext;
  28     @ViewChild('recordTabs', { static: true }) recordTabs: NgbTabset;
  29     @ViewChild('marcEditor', {static: false}) marcEditor: MarcEditorComponent;
  30
  31     @ViewChild('holdingsMaint', {static: false})
  32         holdingsMaint: HoldingsMaintenanceComponent;
  33
  34     defaultTab: string; // eg.cat.default_record_tab
  35
  36     @ViewChild('pendingChangesDialog', {static: false})
  37         pendingChangesDialog: ConfirmDialogComponent;
  38
  39     constructor(
  40         private router: Router,
  41         private route: ActivatedRoute,
  42         private pcrud: PcrudService,
  43         private auth: AuthService,
  44         private bib: BibRecordService,
  45         private cat: CatalogService,
  46         private staffCat: StaffCatalogService,
  47         private holdings: HoldingsService,
  48         private store: StoreService
  49     ) {}
  50
  51     ngOnInit() {
  52         this.searchContext = this.staffCat.searchContext;
  53
  54         this.defaultTab =
  55             this.store.getLocalItem('eg.cat.default_record_tab')
  56             || 'item_table';
  57
  58         // Watch for URL record ID changes
  59         // This includes the initial route.
  60         // When applying the default configured tab, no navigation occurs
  61         // to apply the tab name to the URL, it displays as the default.
  62         // This is done so no intermediate redirect is required, which
  63         // messes with browser back/forward navigation.
  64         this.route.paramMap.subscribe((params: ParamMap) => {
  65             this.recordTab = params.get('tab');
  66             this.recordId = +params.get('id');
  67             this.searchContext = this.staffCat.searchContext;
  68
  69             if (!this.recordTab) {
  70                 this.recordTab = this.defaultTab || 'item_table';
  71             }
  72
  73             this.loadRecord();
  74         });
  75     }
  76
  77     setDefaultTab() {
  78         this.defaultTab = this.recordTab;
  79         this.store.setLocalItem('eg.cat.default_record_tab', this.recordTab);
  80     }
  81
  82     // Changing a tab in the UI means changing the route.
  83     // Changing the route ultimately results in changing the tab.
  84     beforeTabChange(evt: NgbTabChangeEvent) {
  85
  86         // prevent tab changing until after route navigation
  87         evt.preventDefault();
  88
  89         // Protect against tab changes with dirty data.
  90         this.canDeactivate().then(ok => {
  91             if (ok) {
  92                 this.recordTab = evt.nextId;
  93                 this.routeToTab();
  94             }
  95         });
  96     }
  97
  98     /*
  99      * Handle 3 types of navigation which can cause loss of data.
 100      * 1. Record detail tab navigation (see also beforeTabChange())
 101      * 2. Intra-Angular route navigation away from the record detail page
 102      * 3. Browser page unload/reload
 103      *
 104      * For the #1, and #2, display a eg confirmation dialog.
 105      * For #3 use the stock browser onbeforeunload dialog.
 106      *
 107      * Note in this case a tab change is a route change, but it's one
 108      * which does not cause RecordComponent to unload, so it has to be
 109      * manually tracked in beforeTabChange().
 110      */
 111     @HostListener('window:beforeunload', ['$event'])
 112     canDeactivate($event?: Event): Promise<boolean> {
 113
 114         if (this.marcEditor && this.marcEditor.changesPending()) {
 115
 116             // Each warning dialog clears the current "changes are pending"
 117             // flag so the user is not presented with the dialog again
 118             // unless new changes are made.
 119             this.marcEditor.clearPendingChanges();
 120
 121             if ($event) { // window.onbeforeunload
 122                 $event.preventDefault();
 123                 $event.returnValue = true;
 124
 125             } else { // tab OR route change.
 126                 return this.pendingChangesDialog.open().toPromise();
 127             }
 128
 129         } else {
 130             return Promise.resolve(true);
 131         }
 132     }
 133
 134     routeToTab() {
 135         const url =
 136             `/staff/catalog/record/${this.recordId}/${this.recordTab}`;
 137
 138         // Retain search parameters
 139         this.router.navigate([url], {queryParamsHandling: 'merge'});
 140     }
 141
 142     loadRecord(): void {
 143
 144         // Avoid re-fetching the same record summary during tab navigation.
 145         if (this.staffCat.currentDetailRecordSummary &&
 146             this.recordId === this.staffCat.currentDetailRecordSummary.id) {
 147             this.summary = this.staffCat.currentDetailRecordSummary;
 148             return;
 149         }
 150
 151         this.summary = null;
 152         this.bib.getBibSummary(
 153             this.recordId,
 154             this.searchContext.searchOrg.id(),
 155             this.searchContext.searchOrg.ou_type().depth()).toPromise()
 156         .then(summary => {
 157             this.summary =
 158                 this.staffCat.currentDetailRecordSummary = summary;
 159         });
 160     }
 161
 162     // Lets us intercept the summary object and augment it with
 163     // search highlight data if/when it becomes available from
 164     // an externally executed search.
 165     summaryForDisplay(): BibRecordSummary {
 166         if (!this.summary) { return null; }
 167         const sum = this.summary;
 168         const ctx = this.searchContext;
 169
 170         if (Object.keys(sum.displayHighlights).length === 0) {
 171             if (ctx.highlightData[sum.id]) {
 172                 sum.displayHighlights = ctx.highlightData[sum.id];
 173             }
 174         }
 175
 176         return this.summary;
 177     }
 178
 179     currentSearchOrg(): IdlObject {
 180         if (this.staffCat && this.staffCat.searchContext) {
 181             return this.staffCat.searchContext.searchOrg;
 182         }
 183         return null;
 184     }
 185
 186     handleMarcRecordSaved() {
 187         this.staffCat.currentDetailRecordSummary = null;
 188         this.loadRecord();
 189     }
 190
 191     // Our actions component broadcast a request to add holdings.
 192     // If our Holdings Maintenance component is active/visible, ask
 193     // it to figure out what data to pass to the holdings editor.
 194     // Otherwise, just tell it to create a new call number and
 195     // copy at the current working location.
 196     addHoldingsRequested() {
 197         if (this.holdingsMaint && this.holdingsMaint.holdingsGrid) {
 198             this.holdingsMaint.openHoldingAdd(
 199                 this.holdingsMaint.holdingsGrid.context.getSelectedRows(),
 200                 true, true
 201             );
 202
 203         } else {
 204
 205             this.holdings.spawnAddHoldingsUi(
 206                 this.recordId, null, [{owner: this.auth.user().ws_ou()}]);
 207         }
 208     }
 209 }
 210
 211