1 files changed, 96 insertions, 0 deletions
diff --git a/comm/mail/actors/MailLinkParent.jsm b/comm/mail/actors/MailLinkParent.jsm
new file mode 100644
index 0000000000..6c371658f6
--- /dev/null
+++ b/comm/mail/actors/MailLinkParent.jsm
@@ -0,0 +1,96 @@
+/* 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/. */
+
+"use strict";
+
+const EXPORTED_SYMBOLS = ["MailLinkParent"];
+
+const { XPCOMUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+);
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  AttachmentInfo: "resource:///modules/AttachmentInfo.sys.mjs",
+});
+
+XPCOMUtils.defineLazyModuleGetters(lazy, {
+  MailServices: "resource:///modules/MailServices.jsm",
+  MailUtils: "resource:///modules/MailUtils.jsm",
+});
+
+class MailLinkParent extends JSWindowActorParent {
+  receiveMessage(value) {
+    switch (value.name) {
+      case "imap:":
+      case "mailbox:":
+        this._handleMailboxLink(value);
+        break;
+      case "mailto:":
+        this._handleMailToLink(value);
+        break;
+      case "mid:":
+        this._handleMidLink(value);
+        break;
+      case "news:":
+      case "snews:":
+        this._handleNewsLink(value);
+        break;
+      default:
+        throw Components.Exception(
+          `Unsupported name=${value.name} url=${value.data}`,
+          Cr.NS_ERROR_ILLEGAL_VALUE
+        );
+    }
+  }
+
+  _handleMailboxLink({ data, target }) {
+    // AttachmentInfo is defined in msgHdrView.js.
+    let url = new URL(data);
+    new lazy.AttachmentInfo({
+      contentType: "",
+      url: data,
+      name: url.searchParams.get("filename"),
+      uri: "",
+      isExternalAttachment: false,
+    }).open(target.browsingContext.topChromeWindow, target.browsingContext.id);
+  }
+
+  _handleMailToLink({ data, target }) {
+    let identity = null;
+
+    // If the document with the link is a message, try to get the identity
+    // from the message and use it when composing.
+    let documentURI = target.windowContext.documentURI;
+    if (documentURI instanceof Ci.nsIMsgMessageUrl) {
+      documentURI.QueryInterface(Ci.nsIMsgMessageUrl);
+      [identity] = lazy.MailUtils.getIdentityForHeader(
+        documentURI.messageHeader
+      );
+    }
+
+    lazy.MailServices.compose.OpenComposeWindowWithURI(
+      undefined,
+      Services.io.newURI(data),
+      identity
+    );
+  }
+
+  _handleMidLink({ data }) {
+    // data is the mid: url.
+    lazy.MailUtils.openMessageByMessageId(data.slice(4));
+  }
+
+  _handleNewsLink({ data }) {
+    Services.ww.openWindow(
+      null,
+      "chrome://messenger/content/messageWindow.xhtml",
+      "_blank",
+      "all,chrome,dialog=no,status,toolbar",
+      Services.io.newURI(data)
+    );
+  }
+}