1 files changed, 79 insertions, 0 deletions
diff --git a/accessible/windows/msaa/Compatibility.h b/accessible/windows/msaa/Compatibility.h
new file mode 100644
index 000000000..dd9a82f7c
--- /dev/null
+++ b/accessible/windows/msaa/Compatibility.h
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 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/. */
+
+#ifndef COMPATIBILITY_MANAGER_H
+#define COMPATIBILITY_MANAGER_H
+
+#include <stdint.h>
+
+namespace mozilla {
+namespace a11y {
+
+/**
+ * Used to get compatibility modes. Note, modes are computed at accessibility
+ * start up time and aren't changed during lifetime.
+ */
+class Compatibility
+{
+public:
+  /**
+   * Return true if IAccessible2 disabled.
+   */
+  static bool IsIA2Off() { return !!(sConsumers & OLDJAWS); }
+
+  /**
+   * Return true if JAWS mode is enabled.
+   */
+  static bool IsJAWS() { return !!(sConsumers & (JAWS | OLDJAWS)); }
+
+  /**
+   * Return true if WE mode is enabled.
+   */
+  static bool IsWE() { return !!(sConsumers & WE); }
+
+  /**
+   * Return true if Dolphin mode is enabled.
+   */
+  static bool IsDolphin() { return !!(sConsumers & DOLPHIN); }
+
+private:
+  Compatibility();
+  Compatibility(const Compatibility&);
+  Compatibility& operator = (const Compatibility&);
+
+  /**
+   * Initialize compatibility mode. Called by platform (see Platform.h) during
+   * accessibility initialization.
+   */
+  static void Init();
+  friend void PlatformInit();
+
+  /**
+   * List of detected consumers of a11y (used for statistics/telemetry and compat)
+   */
+  enum {
+    NVDA = 1 << 0,
+    JAWS = 1 << 1,
+    OLDJAWS = 1 << 2,
+    WE = 1 << 3,
+    DOLPHIN = 1 << 4,
+    SEROTEK = 1 << 5,
+    COBRA = 1 << 6,
+    ZOOMTEXT = 1 << 7,
+    KAZAGURU = 1 << 8,
+    YOUDAO = 1 << 9,
+    UNKNOWN = 1 << 10,
+    UIAUTOMATION = 1 << 11
+  };
+
+private:
+  static uint32_t sConsumers;
+};
+
+} // a11y namespace
+} // mozilla namespace
+
+#endif