From c483ae19e110ef5c1e539883a38fbc79b3dd4e4e Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <koszko@koszko.org>
Date: Wed, 21 Jul 2021 22:00:20 +0200
Subject: add ability to query page content from repo and display it in the
 popup

---
 common/ajax.js | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 common/ajax.js

(limited to 'common')

diff --git a/common/ajax.js b/common/ajax.js
new file mode 100644
index 0000000..8082bbe
--- /dev/null
+++ b/common/ajax.js
@@ -0,0 +1,39 @@
+/**
+ * part of Hachette
+ * Wrapping XMLHttpRequest into a Promise.
+ *
+ * Copyright (C) 2021 Wojtek Kosior
+ * Redistribution terms are gathered in the `copyright' file.
+ */
+
+function ajax_callback()
+{
+    if (this.readyState == 4)
+	this.resolve_callback(this);
+}
+
+function initiate_ajax_request(resolve, reject, method, url)
+{
+    const xhttp = new XMLHttpRequest();
+    xhttp.resolve_callback = resolve;
+    xhttp.onreadystatechange = ajax_callback;
+    xhttp.open(method, url, true);
+    try {
+	xhttp.send();
+    } catch(e) {
+	console.log(e);
+	setTimeout(reject, 0);
+    }
+}
+
+function make_ajax_request(method, url)
+{
+    return new Promise((resolve, reject) =>
+		       initiate_ajax_request(resolve, reject, method, url));
+}
+
+/*
+ * EXPORTS_START
+ * EXPORT make_ajax_request
+ * EXPORTS_END
+ */
-- 
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