Scrolls to the notification when focus moves to its buttons.

BUG=224974

Review URL: https://codereview.chromium.org/14198004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194699 0039d316-1c4b-4281-b951-d872f2087c98

ui/message_center/views/message_view.cc

@@ -54,6 +54,7 @@ class ControlButton : public views::ImageButton {
   // Overridden from views::ImageButton:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual void OnFocus() OVERRIDE;
 
   // The SetPadding() method also sets the button's image alignment (positive
   // values yield left/top alignments, negative values yield right/bottom ones,
@@ -129,6 +130,10 @@ void ControlButton::OnPaint(gfx::Canvas* canvas) {
   OnPaintFocusBorder(canvas);
 }
 
+void ControlButton::OnFocus() {
+  ScrollRectToVisible(GetLocalBounds());
+}
+
 gfx::Point ControlButton::ComputePaddedImagePaintPosition(
     const gfx::ImageSkia& image) {
   gfx::Vector2d offset;

ui/message_center/views/notification_view.cc

@@ -255,6 +255,7 @@ class NotificationButton : public views::CustomButton {
   // 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;
@@ -319,6 +320,10 @@ 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));
@@ -544,6 +549,12 @@ void NotificationView::Layout() {
                              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.

ui/message_center/views/notification_view.h

@@ -35,6 +35,7 @@ class MESSAGE_CENTER_EXPORT NotificationView : public MessageView {
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual int GetHeightForWidth(int width) OVERRIDE;
   virtual void Layout() OVERRIDE;
+  virtual void ScrollRectToVisible(const gfx::Rect& rect) OVERRIDE;
 
   // Overridden from MessageView:
   virtual void ButtonPressed(views::Button* sender,