1 files changed, 73 insertions, 0 deletions
diff --git a/webapp/src/app/@core-xds/services/alert.service.ts b/webapp/src/app/@core-xds/services/alert.service.ts
new file mode 100644
index 0000000..c15e176
--- /dev/null
+++ b/webapp/src/app/@core-xds/services/alert.service.ts
@@ -0,0 +1,73 @@
+import { Injectable, SecurityContext } from '@angular/core';
+import { Observable } from 'rxjs/Observable';
+import { Subject } from 'rxjs/Subject';
+
+
+export type AlertType = 'error' | '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 defaultDismissTmo = 5; // in seconds
+
+  constructor() {
+    this.alerts = this.alertsSubject.asObservable();
+    this._alerts = [];
+    this.uid = 0;
+  }
+
+  public error(msg: string, dismissTime?: number) {
+    this.add({
+      type: 'error', msg: msg, dismissible: true, dismissTimeout: dismissTime
+    });
+  }
+
+  public warning(msg: string, dismissible?: boolean) {
+    this.add({ type: 'warning', msg: msg, dismissible: true, dismissTimeout: (dismissible ? this.defaultDismissTmo : 0) });
+  }
+
+  public info(msg: string) {
+    this.add({ type: 'info', msg: msg, dismissible: true, dismissTimeout: this.defaultDismissTmo });
+  }
+
+  public add(al: IAlert) {
+    const msg = String(al.msg).replace('\n', '<br>');
+    // this._alerts.push({
+    this._alerts = [{
+      show: true,
+      type: al.type,
+      msg: 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) {
+    /*
+    const idx = this._alerts.findIndex((a) => a.id === al.id);
+    if (idx > -1) {
+      this._alerts.splice(idx, 1);
+      this.alertsSubject.next(this._alerts);
+    }
+    */
+    this._alerts = [];
+    this.alertsSubject.next(this._alerts);
+  }
+}