1 files changed, 55 insertions, 0 deletions
diff --git a/browser/actors/BrowserTabChild.sys.mjs b/browser/actors/BrowserTabChild.sys.mjs
new file mode 100644
index 0000000000..04c6e2f17a
--- /dev/null
+++ b/browser/actors/BrowserTabChild.sys.mjs
@@ -0,0 +1,55 @@
+/* vim: set ts=2 sw=2 sts=2 et tw=80: */
+/* 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/. */
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  E10SUtils: "resource://gre/modules/E10SUtils.sys.mjs",
+});
+
+export class BrowserTabChild extends JSWindowActorChild {
+  constructor() {
+    super();
+  }
+
+  receiveMessage(message) {
+    let context = this.manager.browsingContext;
+    let docShell = context.docShell;
+
+    switch (message.name) {
+      // XXX(nika): Should we try to call this in the parent process instead?
+      case "Browser:Reload":
+        /* First, we'll try to use the session history object to reload so
+         * that framesets are handled properly. If we're in a special
+         * window (such as view-source) that has no session history, fall
+         * back on using the web navigation's reload method.
+         */
+        let webNav = docShell.QueryInterface(Ci.nsIWebNavigation);
+        try {
+          if (webNav.sessionHistory) {
+            webNav = webNav.sessionHistory;
+          }
+        } catch (e) {}
+
+        let reloadFlags = message.data.flags;
+        if (message.data.handlingUserInput) {
+          reloadFlags |= Ci.nsIWebNavigation.LOAD_FLAGS_USER_ACTIVATION;
+        }
+
+        try {
+          lazy.E10SUtils.wrapHandlingUserInput(
+            this.document.defaultView,
+            message.data.handlingUserInput,
+            () => webNav.reload(reloadFlags)
+          );
+        } catch (e) {}
+        break;
+
+      case "ForceEncodingDetection":
+        docShell.forceEncodingDetection();
+        break;
+    }
+  }
+}