MacViews: Implement Full Keyboard Access.

ui/views/controls/button/button.cc

 // Copyright (c) 2011 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/views/controls/button/button.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/accessibility/ax_view_state.h"
 
 namespace views {
 
 ////////////////////////////////////////////////////////////////////////////////
 // Button, static public:
 
 // static
 Button::ButtonState Button::GetButtonStateFrom(ui::NativeTheme::State state) {
   switch (state) {
     case ui::NativeTheme::kDisabled:  return Button::STATE_DISABLED;
     case ui::NativeTheme::kHovered:   return Button::STATE_HOVERED;
     case ui::NativeTheme::kNormal:    return Button::STATE_NORMAL;
     case ui::NativeTheme::kPressed:   return Button::STATE_PRESSED;
     case ui::NativeTheme::kNumStates: NOTREACHED();
   }
   return Button::STATE_NORMAL;
 }
 
+// static
+void Button::ConfigureDefaultFocus(Button* button) {
+#if defined(OS_MACOSX)
+  // On Mac, buttons are focusable only in full keyboard access mode.
+  button->SetFocusBehavior(FocusBehavior::ACCESSIBLE_ONLY);
+#else
+  button->SetFocusBehavior(FocusBehavior::ALWAYS);
+#endif
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Button, public:
 
 Button::~Button() {
 }
 
 void Button::SetTooltipText(const base::string16& tooltip_text) {
   tooltip_text_ = tooltip_text;
   if (accessible_name_.empty())
     accessible_name_ = tooltip_text_;
@@ skipping 33 matching lines @@
 void Button::NotifyClick(const ui::Event& event) {
   // We can be called when there is no listener, in cases like double clicks on
   // menu buttons etc.
   if (listener_)
     listener_->ButtonPressed(this, event);
 }
 
 void Button::OnClickCanceled(const ui::Event& event) {}
 
 }  // namespace views