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Diffstat (limited to 'webapp/src/app/services/alert.service.ts')
-rw-r--r-- | webapp/src/app/services/alert.service.ts | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/webapp/src/app/services/alert.service.ts b/webapp/src/app/services/alert.service.ts new file mode 100644 index 0000000..9dab36a --- /dev/null +++ b/webapp/src/app/services/alert.service.ts @@ -0,0 +1,64 @@ +import { Injectable, SecurityContext } from '@angular/core'; +import { DomSanitizer } from '@angular/platform-browser'; +import { Observable } from 'rxjs/Observable'; +import { Subject } from 'rxjs/Subject'; + + +export type AlertType = "danger" | "warning" | "info" | "success"; + +export interface IAlert { + type: AlertType; + msg: string; + show?: boolean; + dismissible?: boolean; + dismissTimeout?: number; // close alert after this time (in seconds) + id?: number; +} + +@Injectable() +export class AlertService { + public alerts: Observable<IAlert[]>; + + private _alerts: IAlert[]; + private alertsSubject = <Subject<IAlert[]>>new Subject(); + private uid = 0; + private defaultDissmissTmo = 5; // in seconds + + constructor(private sanitizer: DomSanitizer) { + this.alerts = this.alertsSubject.asObservable(); + this._alerts = []; + this.uid = 0; + } + + public error(msg: string) { + this.add({ type: "danger", msg: msg, dismissible: true }); + } + + public warning(msg: string, dismissible?: boolean) { + this.add({ type: "warning", msg: msg, dismissible: true, dismissTimeout: (dismissible ? this.defaultDissmissTmo : 0) }); + } + + public info(msg: string) { + this.add({ type: "info", msg: msg, dismissible: true, dismissTimeout: this.defaultDissmissTmo }); + } + + public add(al: IAlert) { + this._alerts.push({ + show: true, + type: al.type, + msg: this.sanitizer.sanitize(SecurityContext.HTML, al.msg), + dismissible: al.dismissible || true, + dismissTimeout: (al.dismissTimeout * 1000) || 0, + id: this.uid, + }); + this.uid += 1; + this.alertsSubject.next(this._alerts); + } + + public del(al: IAlert) { + let idx = this._alerts.findIndex((a) => a.id === al.id); + if (idx > -1) { + this._alerts.splice(idx, 1); + } + } +} |