1 files changed, 107 insertions, 0 deletions
diff --git a/toolkit/actors/KeyPressEventModelCheckerChild.sys.mjs b/toolkit/actors/KeyPressEventModelCheckerChild.sys.mjs
new file mode 100644
index 0000000000..8b4fe82f17
--- /dev/null
+++ b/toolkit/actors/KeyPressEventModelCheckerChild.sys.mjs
@@ -0,0 +1,107 @@
+/* -*- 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/. */
+
+import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
+
+export class KeyPressEventModelCheckerChild extends JSWindowActorChild {
+  // Currently, the event is dispatched only when the document becomes editable
+  // because of contenteditable.  If you need to add new editor which is in
+  // designMode, you need to change MaybeDispatchCheckKeyPressEventModelEvent()
+  // of Document.
+  handleEvent(aEvent) {
+    if (!AppConstants.DEBUG) {
+      // Stop propagation in opt build to save the propagation cost.
+      // However, the event is necessary for running test_bug1514940.html.
+      // Therefore, we need to keep propagating it at least on debug build.
+      aEvent.stopImmediatePropagation();
+    }
+
+    // Currently, even if we set Document.KEYPRESS_EVENT_MODEL_CONFLATED
+    // here, conflated model isn't used forcibly.  If you need it, you need
+    // to change WidgetKeyboardEvent, dom::KeyboardEvent and PresShell.
+    let model = Document.KEYPRESS_EVENT_MODEL_DEFAULT;
+    if (
+      this._isOldOfficeOnlineServer(aEvent.target) ||
+      this._isOldConfluence(aEvent.target.ownerGlobal)
+    ) {
+      model = Document.KEYPRESS_EVENT_MODEL_SPLIT;
+    }
+    aEvent.target.setKeyPressEventModel(model);
+  }
+
+  _isOldOfficeOnlineServer(aDocument) {
+    let editingElement = aDocument.getElementById(
+      "WACViewPanel_EditingElement"
+    );
+    // If it's not Office Online Server, don't include it into the telemetry
+    // because we just need to collect percentage of old version in all loaded
+    // Office Online Server instances.
+    if (!editingElement) {
+      return false;
+    }
+    let isOldVersion = !editingElement.classList.contains(
+      "WACViewPanel_DisableLegacyKeyCodeAndCharCode"
+    );
+    Services.telemetry.keyedScalarAdd(
+      "dom.event.office_online_load_count",
+      isOldVersion ? "old" : "new",
+      1
+    );
+    return isOldVersion;
+  }
+
+  _isOldConfluence(aWindow) {
+    if (!aWindow) {
+      return false;
+    }
+    // aWindow should be an editor window in <iframe>.  However, we don't know
+    // whether it can be without <iframe>.  Anyway, there should be tinyMCE
+    // object in the parent window or in the window.
+    let tinyMCEObject;
+    // First, try to retrieve tinyMCE object from parent window.
+    try {
+      tinyMCEObject = ChromeUtils.waiveXrays(aWindow.parent).tinyMCE;
+    } catch (e) {
+      // Ignore the exception for now.
+    }
+    // Next, if there is no tinyMCE object in the parent window, let's check
+    // the window.
+    if (!tinyMCEObject) {
+      try {
+        tinyMCEObject = ChromeUtils.waiveXrays(aWindow).tinyMCE;
+      } catch (e) {
+        // Fallthrough to return false below.
+      }
+      // If we couldn't find tinyMCE object, let's assume that it's not
+      // Confluence instance.
+      if (!tinyMCEObject) {
+        return false;
+      }
+    }
+    // If there is tinyMCE object, we can assume that we loaded Confluence
+    // instance.  So, let's check the version whether it allows conflated
+    // keypress event model.
+    try {
+      let { author, version } =
+        new tinyMCEObject.plugins.CursorTargetPlugin().getInfo();
+      // If it's not Confluence, don't include it into the telemetry because
+      // we just need to collect percentage of old version in all loaded
+      // Confluence instances.
+      if (author !== "Atlassian") {
+        return false;
+      }
+      let isOldVersion = version === "1.0";
+      Services.telemetry.keyedScalarAdd(
+        "dom.event.confluence_load_count",
+        isOldVersion ? "old" : "new",
+        1
+      );
+      return isOldVersion;
+    } catch (e) {
+      return false;
+    }
+  }
+}