MacViews: Implement Full Keyboard Access.

ui/views/controls/link.cc

 // Copyright (c) 2012 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/link.h"
 
 #include "build/build_config.h"
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 141 matching lines @@
   SchedulePaint();
 }
 
 void Link::SetFontList(const gfx::FontList& font_list) {
   Label::SetFontList(font_list);
   RecalculateFont();
 }
 
 void Link::SetText(const base::string16& text) {
   Label::SetText(text);
-  // Disable focusability for empty links.  Otherwise Label::GetInsets() will
-  // give them an unconditional 1-px. inset on every side to allow for a focus
-  // border, when in this case we probably wanted zero width.
-  SetFocusBehavior(text.empty() ? FocusBehavior::NEVER : FocusBehavior::ALWAYS);
+  ConfigureFocus();
 }
 
 void Link::OnNativeThemeChanged(const ui::NativeTheme* theme) {
   Label::SetEnabledColor(GetEnabledColor());
   SetDisabledColor(
       theme->GetSystemColor(ui::NativeTheme::kColorId_LinkDisabled));
 }
 
 void Link::SetEnabledColor(SkColor color) {
   requested_enabled_color_set_ = true;
@@ skipping 15 matching lines @@
 }
 
 void Link::Init() {
   listener_ = NULL;
   pressed_ = false;
   underline_ = true;
   RecalculateFont();
 
   // Label::Init() calls SetText(), but if that's being called from Label(), our
   // SetText() override will not be reached (because the constructed class is
-  // only a Label at the moment, not yet a Link).  So set the focus behavior
-  // here as well
-  SetFocusBehavior(text().empty() ? FocusBehavior::NEVER
-                                  : FocusBehavior::ALWAYS);
+  // only a Label at the moment, not yet a Link).  So explicitly configure focus
+  // here.
+  ConfigureFocus();
 }
 
 void Link::SetPressed(bool pressed) {
   if (pressed_ != pressed) {
     pressed_ = pressed;
     Label::SetEnabledColor(GetEnabledColor());
     RecalculateFont();
     SchedulePaint();
   }
 }
 
 void Link::RecalculateFont() {
   // Underline the link iff it is enabled and |underline_| is true.
   const int style = font_list().GetFontStyle();
   const int intended_style = (enabled() && underline_) ?
       (style | gfx::Font::UNDERLINE) : (style & ~gfx::Font::UNDERLINE);
   if (style != intended_style)
     Label::SetFontList(font_list().DeriveWithStyle(intended_style));
 }
 
+void Link::ConfigureFocus() {
+  // Disable focusability for empty links.  Otherwise Label::GetInsets() will
+  // give them an unconditional 1-px. inset on every side to allow for a focus
+  // border, when in this case we probably wanted zero width.
+  if (text().empty()) {
+    SetFocusBehavior(FocusBehavior::NEVER);
+  } else {
+#if defined(OS_MACOSX)
+    SetFocusBehavior(FocusBehavior::ACCESSIBLE_ONLY);
+#else
+    SetFocusBehavior(FocusBehavior::ALWAYS);
+#endif
+  }
+}
+
 SkColor Link::GetEnabledColor() {
   // In material mode, there is no pressed effect, so always use the unpressed
   // color.
   if (!pressed_ || ui::MaterialDesignController::IsModeMaterial()) {
     if (!requested_enabled_color_set_ && GetNativeTheme())
       return GetNativeTheme()->GetSystemColor(
           ui::NativeTheme::kColorId_LinkEnabled);
 
     return requested_enabled_color_;
   }
 
   if (!requested_pressed_color_set_ && GetNativeTheme())
     return GetNativeTheme()->GetSystemColor(
         ui::NativeTheme::kColorId_LinkPressed);
 
   return requested_pressed_color_;
 }
 
 }  // namespace views