1 files changed, 55 insertions, 0 deletions
diff --git a/comm/mail/actors/ChatActionChild.sys.mjs b/comm/mail/actors/ChatActionChild.sys.mjs
new file mode 100644
index 0000000000..92af66d3df
--- /dev/null
+++ b/comm/mail/actors/ChatActionChild.sys.mjs
@@ -0,0 +1,55 @@
+/* -*- mode: js; indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* 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/. */
+
+export class ChatActionChild extends JSWindowActorChild {
+  constructor() {
+    super();
+
+    this.messageActions = null;
+  }
+
+  receiveMessage(message) {
+    if (!this.messageActions) {
+      return;
+    }
+    if (message.name === "ChatAction:Run") {
+      this.messageActions[message.data.index].run();
+    } else if (message.name === "ChatAction:Hide") {
+      this.messageActions = null;
+    }
+  }
+
+  async handleEvent(event) {
+    let node = event.composedTarget;
+
+    // Set the node to containing <video>/<audio>/<embed>/<object> if the node
+    // is in the videocontrols UA Widget.
+    if (node.containingShadowRoot?.isUAWidget()) {
+      const host = node.containingShadowRoot.host;
+      if (
+        this.contentWindow.HTMLMediaElement.isInstance(host) ||
+        this.contentWindow.HTMLEmbedElement.isInstance(host) ||
+        this.contentWindow.HTMLObjectElement.isInstance(host)
+      ) {
+        node = host;
+      }
+    }
+
+    while (node) {
+      if (node._originalMsg) {
+        this.messageActions = node._originalMsg.getActions();
+        break;
+      }
+      node = node.parentNode;
+    }
+    if (!this.messageActions) {
+      return;
+    }
+    this.sendAsyncMessage("ChatAction:Actions", {
+      actions: this.messageActions.map(action => action.label),
+    });
+  }
+}