Scrolls to the notification when focus moves to its buttons.

ui/message_center/views/notification_view.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/message_center/views/notification_view.h"
 
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
 #include "grit/ui_resources.h"
 #include "ui/base/accessibility/accessible_view_state.h"
@@ skipping 206 matching lines @@
  public:
   NotificationButton(views::ButtonListener* listener);
   virtual ~NotificationButton();
 
   void SetIcon(const gfx::ImageSkia& icon);
   void SetTitle(const string16& title);
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual int GetHeightForWidth(int width) OVERRIDE;
+  virtual void OnFocus() OVERRIDE;
 
   // Overridden from views::CustomButton:
   virtual void StateChanged() OVERRIDE;
 
  private:
   views::ImageView* icon_;
   views::Label* title_;
 };
 
 NotificationButton::NotificationButton(views::ButtonListener* listener)
@@ skipping 44 matching lines @@
 }
 
 gfx::Size NotificationButton::GetPreferredSize() {
   return gfx::Size(message_center::kNotificationWidth, kButtonHeight);
 }
 
 int NotificationButton::GetHeightForWidth(int width) {
   return kButtonHeight;
 }
 
+void NotificationButton::OnFocus() {
+  ScrollRectToVisible(GetLocalBounds());
+}
+
 void NotificationButton::StateChanged() {
   if (state() == STATE_HOVERED || state() == STATE_PRESSED)
     set_background(MakeBackground(kHoveredButtonBackgroundColor));
   else
     set_background(NULL);
 }
 
 }  // namespace
 
 namespace message_center {
@@ skipping 190 matching lines @@
   if (!IsExpansionNeeded()) {
     expand_button()->SetVisible(false);
   } else {
     gfx::Size expand_size(expand_button()->GetPreferredSize());
     int expand_y = bottom_y - expand_size.height();
     expand_button()->SetBounds(content_right - expand_size.width(), expand_y,
                                expand_size.width(), expand_size.height());
   }
 }
 
+void NotificationView::ScrollRectToVisible(const gfx::Rect& rect) {
+  // Notification want to show the whole notification when a part of it (like
+  // a button) gets focused.
+  views::View::ScrollRectToVisible(GetLocalBounds());
+}
+
 void NotificationView::ButtonPressed(views::Button* sender,
                                      const ui::Event& event) {
   // See if the button pressed was an action button.
   for (size_t i = 0; i < action_buttons_.size(); ++i) {
     if (sender == action_buttons_[i]) {
       observer()->OnButtonClicked(notification_id(), i);
       return;
     }
   }
 
@@ skipping 34 matching lines @@
 
   // If there's a title ensure title + message lines <= collapsed line limit.
   if (title_view_)
     return kMessageCollapsedLineLimit - title_view_->GetLinesForWidth(width());
 
   // If there's no title we get an extra line because message lines are shorter.
   return kMessageCollapsedLineLimit + 1;
 }
 
 }  // namespace message_center