MacViews: Implement NSAccessibilityPressAction for Views with clickable roles.

ui/accessibility/ax_utils.cc

Index: ui/accessibility/ax_utils.cc
diff --git a/ui/accessibility/ax_utils.cc b/ui/accessibility/ax_utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1eea44b66e1c33cc8af9e8c466e09cf70f649f1b
--- /dev/null
+++ b/ui/accessibility/ax_utils.cc
@@ -0,0 +1,35 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/accessibility/ax_utils.h"
+
+namespace ui {
+
+bool IsRoleClickable(AXRole role) {

[dmazzoni, 2017/02/09 20:24:43]

This is fine for now, but @aboxhall may have some thoughts.
We've been talking about the idea of having a json5 file
with a taxonomy of all roles and auto-generating helper
functions like this one.

[Patti Lor, 2017/02/09 23:11:23]

Oh, that sounds interesting, thanks for the FYI! I'm assuming she can already
see this because of the automatic CC list :)

+  switch (role) {
+    case ui::AX_ROLE_BUTTON:

[tapted, 2017/02/09 02:45:18]

ui:: prefixes not needed

[Patti Lor, 2017/02/09 23:11:23]

Oops, thanks!

+    case ui::AX_ROLE_CHECK_BOX:
+    case ui::AX_ROLE_COLOR_WELL:
+    case ui::AX_ROLE_DISCLOSURE_TRIANGLE:
+    case ui::AX_ROLE_IMAGE_MAP_LINK:
+    case ui::AX_ROLE_LINK:
+    case ui::AX_ROLE_LIST_BOX_OPTION:
+    case ui::AX_ROLE_MENU_BUTTON:
+    case ui::AX_ROLE_MENU_ITEM:
+    case ui::AX_ROLE_MENU_ITEM_CHECK_BOX:
+    case ui::AX_ROLE_MENU_ITEM_RADIO:
+    case ui::AX_ROLE_MENU_LIST_OPTION:
+    case ui::AX_ROLE_MENU_LIST_POPUP:
+    case ui::AX_ROLE_POP_UP_BUTTON:
+    case ui::AX_ROLE_RADIO_BUTTON:
+    case ui::AX_ROLE_SWITCH:
+    case ui::AX_ROLE_TAB:
+    case ui::AX_ROLE_TOGGLE_BUTTON:
+      return true;
+    default:
+      return false;
+  }
+}
+
+}  // namespace ui