1 files changed, 38 insertions, 0 deletions
diff --git a/devtools/server/actors/manifest.js b/devtools/server/actors/manifest.js
new file mode 100644
index 0000000000..d7503592b3
--- /dev/null
+++ b/devtools/server/actors/manifest.js
@@ -0,0 +1,38 @@
+/* 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/. */
+
+"use strict";
+
+const { Actor, ActorClassWithSpec } = require("devtools/shared/protocol");
+const { manifestSpec } = require("devtools/shared/specs/manifest");
+
+loader.lazyImporter(
+  this,
+  "ManifestObtainer",
+  "resource://gre/modules/ManifestObtainer.jsm"
+);
+
+/**
+ * An actor for a Web Manifest
+ */
+const ManifestActor = ActorClassWithSpec(manifestSpec, {
+  initialize: function(conn, targetActor) {
+    Actor.prototype.initialize.call(this, conn);
+    this.targetActor = targetActor;
+  },
+
+  fetchCanonicalManifest: async function() {
+    try {
+      const manifest = await ManifestObtainer.contentObtainManifest(
+        this.targetActor.window,
+        { checkConformance: true }
+      );
+      return { manifest };
+    } catch (error) {
+      return { manifest: null, errorMessage: error.message };
+    }
+  },
+});
+
+exports.ManifestActor = ManifestActor;