1 files changed, 42 insertions, 0 deletions
diff --git a/comm/mailnews/base/prefs/content/aw-incoming.js b/comm/mailnews/base/prefs/content/aw-incoming.js
new file mode 100644
index 0000000000..a4f746d71d
--- /dev/null
+++ b/comm/mailnews/base/prefs/content/aw-incoming.js
@@ -0,0 +1,42 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* import-globals-from AccountWizard.js */
+
+var { cleanUpHostName, isLegalHostNameOrIP } = ChromeUtils.import(
+  "resource:///modules/hostnameUtils.jsm"
+);
+var { NntpUtils } = ChromeUtils.import("resource:///modules/NntpUtils.jsm");
+
+function incomingPageValidate() {
+  let hostName = cleanUpHostName(document.getElementById("newsServer").value);
+
+  let hasAccount = false;
+  let server = NntpUtils.findServer(hostName);
+  if (server) {
+    // It's OK if a server exists, as long as it's not used by any account.
+    hasAccount = MailServices.accounts.FindAccountForServer(server);
+  }
+  // Can advance if it's a legal host name and we do not already have a server
+  // in use with the same host name.
+  document.querySelector("wizard").canAdvance =
+    !!isLegalHostNameOrIP(hostName) && !hasAccount;
+}
+
+function incomingPageUnload() {
+  parent.GetPageData().hostname = cleanUpHostName(
+    document.getElementById("newsServer").value
+  );
+
+  return true;
+}
+
+function incomingPageInit() {
+  var pageData = parent.GetPageData();
+  if (pageData.hostname) {
+    document.getElementById("newsServer").value = pageData.hostname;
+  }
+  incomingPageValidate();
+}