added paperless ui

src-ui/src/app/services/toast.service.ts

@@ -0,0 +1,52 @@
+import { Injectable } from '@angular/core';
+import { Subject } from 'rxjs';
+
+export class Toast {
+
+  static make(title: string, content: string, delay?: number): Toast {
+    let t = new Toast()
+    t.title = title
+    t.content = content
+    if (delay) {
+      t.delay = delay
+    }
+    return t
+  }
+
+  title: string
+
+  content: string
+
+  delay: number = 5000
+
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ToastService {
+
+  constructor() { }
+
+  private toasts: Toast[] = []
+
+  private toastSubject: Subject<Toast[]> = new Subject()
+
+  showToast(toast: Toast) {
+    this.toasts.push(toast)
+    this.toastSubject.next(this.toasts)
+  }
+
+  closeToast(toast: Toast) {
+    let index = this.toasts.findIndex(t => t == toast)
+    if (index > -1) {
+      this.toasts.splice(index, 1)
+      this.toastSubject.next(this.toasts)
+    }
+  }
+
+  getToasts() {
+    return this.toastSubject
+  }
+
+}