From 9ae1966a4c7b835093f69e44c2f17a31e9415a67 Mon Sep 17 00:00:00 2001
From: Olmo del Corral <olmo@signumsoftware.com>
Date: Wed, 20 Feb 2019 23:27:18 +0100
Subject: [PATCH] add useAPI

---
 Signum.React/Scripts/Services.ts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/Signum.React/Scripts/Services.ts b/Signum.React/Scripts/Services.ts
index b0ab37ee57..2fb47f8798 100644
--- a/Signum.React/Scripts/Services.ts
+++ b/Signum.React/Scripts/Services.ts
@@ -1,5 +1,6 @@
 import { ModelState } from './Signum.Entities'
 import { GraphExplorer } from './Reflection'
+import * as React from 'react'
 
 export interface AjaxOptions {
   url: string;
@@ -383,3 +384,24 @@ export class AbortableRequest<Q, A> {
     }) as Promise<A>;
   }
 }
+
+
+export function useAPI<T>(defaultValue: T, key: ReadonlyArray<any> | undefined, makeCall: (signal: AbortSignal) => Promise<T>): T {
+
+  const [data, updateData] = React.useState<T>(defaultValue)
+
+  React.useEffect(() => {
+    var abortController = new AbortController();
+
+    makeCall(abortController.signal)
+      .then(result => updateData(result))
+      .done();
+
+    return () => {
+      abortController.abort();
+    }
+  }, key);
+
+  return data;
+
+}