MacViews: Implement Full Keyboard Access.

ui/views/controls/label.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/label.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 195 matching lines @@
   result.append(lines_[0]->GetDisplayText());
   for (size_t i = 1; i < lines_.size(); ++i) {
     result.append(1, '\n');
     result.append(lines_[i]->GetDisplayText());
   }
   return result;
 }
 
 gfx::Insets Label::GetInsets() const {
   gfx::Insets insets = View::GetInsets();
-  if (focusable()) {
+  if (focusable() || accessibility_focusable()) {

[tapted, 2016/04/20 06:05:58]

oh butts - how many things call View::focusable()?  Can we replace it with
something like

bool View::CanFocus() const {
  return focus_behavior_ != FocusBehavior::NEVER;
}

[karandeepb, 2016/05/03 02:54:12]

Replaced this with focus_behavior() check. These are the only 2 instances in the
codebase.

     insets += gfx::Insets(kFocusBorderPadding, kFocusBorderPadding,
                           kFocusBorderPadding, kFocusBorderPadding);
   }
   return insets;
 }
 
 int Label::GetBaseline() const {
   return GetInsets().top() + font_list().GetBaseline();
 }
 
@@ skipping 201 matching lines @@
   PreferredSizeChanged();
   SchedulePaint();
   lines_.clear();
 }
 
 void Label::MaybeBuildRenderTextLines() {
   if (!lines_.empty())
     return;
 
   gfx::Rect rect = GetContentsBounds();
-  if (focusable())
+  if (focusable() || accessibility_focusable())
     rect.Inset(kFocusBorderPadding, kFocusBorderPadding);
   if (rect.IsEmpty())
     return;
   rect.Inset(-gfx::ShadowValue::GetMargin(shadows()));
 
   gfx::HorizontalAlignment alignment = horizontal_alignment();
   gfx::DirectionalityMode directionality = render_text_->directionality_mode();
   if (multi_line()) {
     // Force the directionality and alignment of the first line on other lines.
     bool rtl =
@@ skipping 138 matching lines @@
 }
 
 bool Label::ShouldShowDefaultTooltip() const {
   const gfx::Size text_size = GetTextSize();
   const gfx::Size size = GetContentsBounds().size();
   return !obscured() && (text_size.width() > size.width() ||
                          (multi_line() && text_size.height() > size.height()));
 }
 
 }  // namespace views