web/admin: add new base form to handle refresh events

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

web/src/elements/forms/Form.ts

@@ -15,6 +15,7 @@ import { MessageLevel } from "../messages/Message";
 import { IronFormElement } from "@polymer/iron-form/iron-form";
 import { camelToSnake, convertToSlug } from "../../utils";
 import { ValidationError } from "authentik-api/src";
+import { EVENT_REFRESH } from "../../constants";
 
 export class APIError extends Error {
 
@@ -140,6 +141,12 @@ export class Form<T> extends LitElement {
                 level: MessageLevel.success,
                 message: this.getSuccessMessage()
             });
+            this.dispatchEvent(
+                new CustomEvent(EVENT_REFRESH, {
+                    bubbles: true,
+                    composed: true,
+                })
+            );
             return r;
         }).catch((ex: Response) => {
             if (ex.status > 399 && ex.status < 500) {

web/src/elements/forms/ModelForm.ts

@@ -0,0 +1,32 @@
+import { property } from "lit-element";
+import { EVENT_REFRESH } from "../../constants";
+import { Form } from "./Form";
+
+export abstract class ModelForm<T, PKT> extends Form<T> {
+
+    abstract loadInstance(pk: PKT): Promise<T>;
+
+    @property()
+    set instancePk(value: PKT) {
+        this._instancePk = value;
+        this.loadInstance(value).then(instance => {
+            this.instance = instance;
+        });
+    }
+
+    private _instancePk?: PKT;
+
+    @property({ attribute: false })
+    instance?: T;
+
+    constructor() {
+        super();
+        this.addEventListener(EVENT_REFRESH, () => {
+            if (!this._instancePk) return;
+            this.loadInstance(this._instancePk).then(instance => {
+                this.instance = instance;
+            });
+        });
+    }
+
+}