1 files changed, 45 insertions, 0 deletions
diff --git a/comm/mail/actors/ContextMenuParent.sys.mjs b/comm/mail/actors/ContextMenuParent.sys.mjs
new file mode 100644
index 0000000000..5cf1d5dbe2
--- /dev/null
+++ b/comm/mail/actors/ContextMenuParent.sys.mjs
@@ -0,0 +1,45 @@
+/* vim: set ts=2 sw=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/. */
+
+export class ContextMenuParent extends JSWindowActorParent {
+  receiveMessage(message) {
+    if (message.name != "contextmenu") {
+      return;
+    }
+
+    let browser = this.manager.rootFrameLoader.ownerElement;
+    let win = browser.ownerGlobal.top;
+
+    // Send events from a message display browser to about:3pane or
+    // about:message if possible.
+    let tabmail = win.document.getElementById("tabmail");
+    if (tabmail) {
+      let chromeBrowser = tabmail.currentTabInfo.chromeBrowser;
+      if (
+        chromeBrowser?.contentWindow.openContextMenu(message, browser, this)
+      ) {
+        return;
+      }
+    }
+    let messageBrowser = win.document.getElementById("messageBrowser");
+    if (messageBrowser?.contentWindow.openContextMenu(message, browser, this)) {
+      return;
+    }
+
+    // Otherwise, send them to the outer window.
+    if ("openContextMenu" in win) {
+      win.openContextMenu(message, browser, this);
+    }
+  }
+
+  hiding() {
+    try {
+      this.sendAsyncMessage("ContextMenu:Hiding", {});
+    } catch (e) {
+      // This will throw if the content goes away while the
+      // context menu is still open.
+    }
+  }
+}