1 /** TODO PORT ME TO <eg-combobox> */
2 import {Component, OnInit, Input, Output, ViewChild, EventEmitter} from '@angular/core';
3 import {Observable, Subject} from 'rxjs';
4 import {map, mapTo, debounceTime, distinctUntilChanged, merge, filter} from 'rxjs/operators';
5 import {AuthService} from '@eg/core/auth.service';
6 import {StoreService} from '@eg/core/store.service';
7 import {OrgService} from '@eg/core/org.service';
8 import {IdlObject} from '@eg/core/idl.service';
9 import {PermService} from '@eg/core/perm.service';
10 import {NgbTypeahead, NgbTypeaheadSelectItemEvent} from '@ng-bootstrap/ng-bootstrap';
12 // Use a unicode char for spacing instead of ASCII=32 so the browser
13 // won't collapse the nested display entries down to a single space.
14 const PAD_SPACE = ' '; // U+2007
16 interface OrgDisplay {
23 selector: 'eg-org-select',
24 templateUrl: './org-select.component.html'
26 export class OrgSelectComponent implements OnInit {
29 hidden: number[] = [];
30 disabled: number[] = [];
31 click$ = new Subject<string>();
34 @ViewChild('instance') instance: NgbTypeahead;
36 // Placeholder text for selector input
37 @Input() placeholder = '';
38 @Input() stickySetting: string;
40 // ID to display in the DOM for this selector
43 // Org unit field displayed in the selector
44 @Input() displayField = 'shortname';
46 // Apply a default org unit value when none is set.
47 // First tries workstation org unit, then user home org unit.
48 // An onChange event WILL be generated when a default is applied.
49 @Input() applyDefault = false;
51 @Input() readOnly = false;
53 // List of org unit IDs to exclude from the selector
54 @Input() set hideOrgs(ids: number[]) {
55 if (ids) { this.hidden = ids; }
58 // List of org unit IDs to disable in the selector
59 @Input() set disableOrgs(ids: number[]) {
60 if (ids) { this.disabled = ids; }
63 // Apply an org unit value at load time.
64 // This will NOT result in an onChange event.
65 @Input() set initialOrg(org: IdlObject) {
66 if (org) { this.startOrg = org; }
69 // Apply an org unit value by ID at load time.
70 // This will NOT result in an onChange event.
71 @Input() set initialOrgId(id: number) {
72 if (id) { this.startOrg = this.org.get(id); }
75 // Modify the selected org unit via data binding.
76 // This WILL result in an onChange event firing.
77 @Input() set applyOrg(org: IdlObject) {
79 this.selected = this.formatForDisplay(org);
83 permLimitOrgs: number[];
84 @Input() set limitPerms(perms: string[]) {
85 this.applyPermLimitOrgs(perms);
88 // Modify the selected org unit by ID via data binding.
89 // This WILL result in an onChange event firing.
90 @Input() set applyOrgId(id: number) {
92 this.selected = this.formatForDisplay(this.org.get(id));
96 // Emitted when the org unit value is changed via the selector.
97 // Does not fire on initialOrg
98 @Output() onChange = new EventEmitter<IdlObject>();
101 private auth: AuthService,
102 private store: StoreService,
103 private org: OrgService,
104 private perm: PermService
109 // Apply a default org unit if desired and possible.
110 if (!this.startOrg && this.applyDefault && this.auth.user()) {
111 // note: ws_ou defaults to home_ou on the server
112 // when when no workstation is used
113 this.startOrg = this.org.get(this.auth.user().ws_ou());
114 this.selected = this.formatForDisplay(
115 this.org.get(this.auth.user().ws_ou())
118 // avoid notifying mid-digest
119 setTimeout(() => this.onChange.emit(this.startOrg), 0);
123 this.selected = this.formatForDisplay(this.startOrg);
128 applyPermLimitOrgs(perms: string[]) {
134 // handle lazy clients that pass null perm names
135 perms = perms.filter(p => p !== null && p !== undefined);
137 if (perms.length === 0) {
141 // NOTE: If permLimitOrgs is useful in a non-staff context
142 // we need to change this to support non-staff perm checks.
143 this.perm.hasWorkPermAt(perms, true).then(permMap => {
145 // safari-friendly version of Array.flat()
146 Object.values(permMap).reduce((acc, val) => acc.concat(val), []);
150 // Format for display in the selector drop-down and input.
151 formatForDisplay(org: IdlObject): OrgDisplay {
152 let label = org[this.displayField]();
153 if (!this.readOnly) {
154 label = PAD_SPACE.repeat(org.ou_type().depth()) + label;
163 // Fired by the typeahead to inform us of a change.
164 // TODO: this does not fire when the value is cleared :( -- implement
165 // change detection on this.selected to look specifically for NULL.
166 orgChanged(selEvent: NgbTypeaheadSelectItemEvent) {
167 // console.debug('org unit change occurred ' + selEvent.item);
168 this.onChange.emit(this.org.get(selEvent.item.id));
171 // Remove the tree-padding spaces when matching.
172 formatter = (result: OrgDisplay) => result.label.trim();
174 filter = (text$: Observable<string>): Observable<OrgDisplay[]> => {
177 distinctUntilChanged(),
179 // Inject a specifier indicating the source of the
180 // action is a user click
181 this.click$.pipe(filter(() => !this.instance.isPopupOpen()))
182 .pipe(mapTo('_CLICK_'))
186 let orgs = this.org.list().filter(org =>
187 this.hidden.filter(id => org.id() === id).length === 0
190 if (this.permLimitOrgs) {
191 // Avoid showing org units where the user does
192 // not have the requested permission.
193 orgs = orgs.filter(org =>
194 this.permLimitOrgs.includes(org.id()));
197 if (term !== '_CLICK_') {
198 // For search-driven events, limit to the matching
200 orgs = orgs.filter(org => {
201 return term === '' || // show all
202 org[this.displayField]()
203 .toLowerCase().indexOf(term.toLowerCase()) > -1;
208 return orgs.map(org => this.formatForDisplay(org));