Move controls into their own dir under chrome/views/controls

TBR=sky

Review URL: http://codereview.chromium.org/48058

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@11841 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 703 deletions

diff --git a/chrome/views/bitmap_scroll_bar.cc b/chrome/views/bitmap_scroll_bar.cc
deleted file mode 100644
index f96a9e8..0000000
--- a/chrome/views/bitmap_scroll_bar.cc
+++ /dev/null
@@ -1,703 +0,0 @@
-// Copyright (c) 2006-2008 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 "chrome/views/bitmap_scroll_bar.h"
-
-#include "base/message_loop.h"
-#include "chrome/common/gfx/chrome_canvas.h"
-#include "chrome/common/l10n_util.h"
-#include "chrome/views/menu.h"
-#include "chrome/views/scroll_view.h"
-#include "chrome/views/widget/widget.h"
-#include "grit/generated_resources.h"
-#include "skia/include/SkBitmap.h"
-
-#undef min
-#undef max
-
-namespace views {
-
-namespace {
-
-// The distance the mouse can be dragged outside the bounds of the thumb during
-// dragging before the scrollbar will snap back to its regular position.
-static const int kScrollThumbDragOutSnap = 100;
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// AutorepeatButton
-//
-//  A button that activates on mouse pressed rather than released, and that
-//  continues to fire the clicked action as the mouse button remains pressed
-//  down on the button.
-//
-///////////////////////////////////////////////////////////////////////////////
-class AutorepeatButton : public ImageButton {
- public:
-  AutorepeatButton(ButtonListener* listener)
-      : ImageButton(listener),
-        repeater_(NewCallback<AutorepeatButton>(this,
-            &AutorepeatButton::NotifyClick)) {
-  }
-  virtual ~AutorepeatButton() {}
-
- protected:
-  virtual bool OnMousePressed(const MouseEvent& event) {
-    Button::NotifyClick(event.GetFlags());
-    repeater_.Start();
-    return true;
-  }
-
-  virtual void OnMouseReleased(const MouseEvent& event, bool canceled) {
-    repeater_.Stop();
-    View::OnMouseReleased(event, canceled);
-  }
-
- private:
-  void NotifyClick() {
-    Button::NotifyClick(0);
-  }
-
-  // The repeat controller that we use to repeatedly click the button when the
-  // mouse button is down.
-  RepeatController repeater_;
-
-  DISALLOW_EVIL_CONSTRUCTORS(AutorepeatButton);
-};
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// BitmapScrollBarThumb
-//
-//  A view that acts as the thumb in the scroll bar track that the user can
-//  drag to scroll the associated contents view within the viewport.
-//
-///////////////////////////////////////////////////////////////////////////////
-class BitmapScrollBarThumb : public View {
- public:
-  explicit BitmapScrollBarThumb(BitmapScrollBar* scroll_bar)
-      : scroll_bar_(scroll_bar),
-        drag_start_position_(-1),
-        mouse_offset_(-1),
-        state_(CustomButton::BS_NORMAL) {
-  }
-  virtual ~BitmapScrollBarThumb() { }
-
-  // Sets the size (width or height) of the thumb to the specified value.
-  void SetSize(int size) {
-    // Make sure the thumb is never sized smaller than its minimum possible
-    // display size.
-    gfx::Size prefsize = GetPreferredSize();
-    size = std::max(size,
-                    static_cast<int>(scroll_bar_->IsHorizontal() ?
-                        prefsize.width() : prefsize.height()));
-    gfx::Rect thumb_bounds = bounds();
-    if (scroll_bar_->IsHorizontal()) {
-      thumb_bounds.set_width(size);
-    } else {
-      thumb_bounds.set_height(size);
-    }
-    SetBounds(thumb_bounds);
-  }
-
-  // Retrieves the size (width or height) of the thumb.
-  int GetSize() const {
-    if (scroll_bar_->IsHorizontal())
-      return width();
-    return height();
-  }
-
-  // Sets the position of the thumb on the x or y axis.
-  void SetPosition(int position) {
-    gfx::Rect thumb_bounds = bounds();
-    gfx::Rect track_bounds = scroll_bar_->GetTrackBounds();
-    if (scroll_bar_->IsHorizontal()) {
-      thumb_bounds.set_x(track_bounds.x() + position);
-    } else {
-      thumb_bounds.set_x(track_bounds.y() + position);
-    }
-    SetBounds(thumb_bounds);
-  }
-
-  // Gets the position of the thumb on the x or y axis.
-  int GetPosition() const {
-    gfx::Rect track_bounds = scroll_bar_->GetTrackBounds();
-    if (scroll_bar_->IsHorizontal())
-      return x() - track_bounds.x();
-    return y() - track_bounds.y();
-  }
-
-  // View overrides:
-  virtual gfx::Size GetPreferredSize() {
-    return gfx::Size(background_bitmap()->width(),
-                     start_cap_bitmap()->height() +
-                         end_cap_bitmap()->height() +
-                         grippy_bitmap()->height());
-  }
-
- protected:
-  // View overrides:
-  virtual void Paint(ChromeCanvas* canvas) {
-    canvas->DrawBitmapInt(*start_cap_bitmap(), 0, 0);
-    int top_cap_height = start_cap_bitmap()->height();
-    int bottom_cap_height = end_cap_bitmap()->height();
-    int thumb_body_height = height() - top_cap_height - bottom_cap_height;
-    canvas->TileImageInt(*background_bitmap(), 0, top_cap_height,
-                         background_bitmap()->width(), thumb_body_height);
-    canvas->DrawBitmapInt(*end_cap_bitmap(), 0,
-                          height() - bottom_cap_height);
-
-    // Paint the grippy over the track.
-    int grippy_x = (width() - grippy_bitmap()->width()) / 2;
-    int grippy_y = (thumb_body_height - grippy_bitmap()->height()) / 2;
-    canvas->DrawBitmapInt(*grippy_bitmap(), grippy_x, grippy_y);
-  }
-
-  virtual void OnMouseEntered(const MouseEvent& event) {
-    SetState(CustomButton::BS_HOT);
-  }
-
-  virtual void OnMouseExited(const MouseEvent& event) {
-    SetState(CustomButton::BS_NORMAL);
-  }
-
-  virtual bool OnMousePressed(const MouseEvent& event) {
-    mouse_offset_ = scroll_bar_->IsHorizontal() ? event.x() : event.y();
-    drag_start_position_ = GetPosition();
-    SetState(CustomButton::BS_PUSHED);
-    return true;
-  }
-
-  virtual bool OnMouseDragged(const MouseEvent& event) {
-    // If the user moves the mouse more than |kScrollThumbDragOutSnap| outside
-    // the bounds of the thumb, the scrollbar will snap the scroll back to the
-    // point it was at before the drag began.
-    if (scroll_bar_->IsHorizontal()) {
-      if ((event.y() < y() - kScrollThumbDragOutSnap) ||
-          (event.y() > (y() + height() + kScrollThumbDragOutSnap))) {
-        scroll_bar_->ScrollToThumbPosition(drag_start_position_, false);
-        return true;
-      }
-    } else {
-      if ((event.x() < x() - kScrollThumbDragOutSnap) ||
-          (event.x() > (x() + width() + kScrollThumbDragOutSnap))) {
-        scroll_bar_->ScrollToThumbPosition(drag_start_position_, false);
-        return true;
-      }
-    }
-    if (scroll_bar_->IsHorizontal()) {
-      int thumb_x = event.x() - mouse_offset_;
-      scroll_bar_->ScrollToThumbPosition(x() + thumb_x, false);
-    } else {
-      int thumb_y = event.y() - mouse_offset_;
-      scroll_bar_->ScrollToThumbPosition(y() + thumb_y, false);
-    }
-    return true;
-  }
-
-  virtual void OnMouseReleased(const MouseEvent& event,
-                               bool canceled) {
-    SetState(CustomButton::BS_HOT);
-    View::OnMouseReleased(event, canceled);
-  }
-
- private:
-  // Returns the bitmap rendered at the start of the thumb.
-  SkBitmap* start_cap_bitmap() const {
-    return scroll_bar_->images_[BitmapScrollBar::THUMB_START_CAP][state_];
-  }
-
-  // Returns the bitmap rendered at the end of the thumb.
-  SkBitmap* end_cap_bitmap() const {
-    return scroll_bar_->images_[BitmapScrollBar::THUMB_END_CAP][state_];
-  }
-
-  // Returns the bitmap that is tiled in the background of the thumb between
-  // the start and the end caps.
-  SkBitmap* background_bitmap() const {
-    return scroll_bar_->images_[BitmapScrollBar::THUMB_MIDDLE][state_];
-  }
-
-  // Returns the bitmap that is rendered in the middle of the thumb
-  // transparently over the background bitmap.
-  SkBitmap* grippy_bitmap() const {
-    return scroll_bar_->images_[BitmapScrollBar::THUMB_GRIPPY]
-        [CustomButton::BS_NORMAL];
-  }
-
-  // Update our state and schedule a repaint when the mouse moves over us.
-  void SetState(CustomButton::ButtonState state) {
-    state_ = state;
-    SchedulePaint();
-  }
-
-  // The BitmapScrollBar that owns us.
-  BitmapScrollBar* scroll_bar_;
-
-  int drag_start_position_;
-
-  // The position of the mouse on the scroll axis relative to the top of this
-  // View when the drag started.
-  int mouse_offset_;
-
-  // The current state of the thumb button.
-  CustomButton::ButtonState state_;
-
-  DISALLOW_EVIL_CONSTRUCTORS(BitmapScrollBarThumb);
-};
-
-} // anonymous namespace
-
-///////////////////////////////////////////////////////////////////////////////
-// BitmapScrollBar, public:
-
-BitmapScrollBar::BitmapScrollBar(bool horizontal, bool show_scroll_buttons)
-    : contents_size_(0),
-      contents_scroll_offset_(0),
-      prev_button_(new AutorepeatButton(this)),
-      next_button_(new AutorepeatButton(this)),
-      thumb_(new BitmapScrollBarThumb(this)),
-      thumb_track_state_(CustomButton::BS_NORMAL),
-      last_scroll_amount_(SCROLL_NONE),
-      repeater_(NewCallback<BitmapScrollBar>(this,
-          &BitmapScrollBar::TrackClicked)),
-      context_menu_mouse_position_(0),
-      show_scroll_buttons_(show_scroll_buttons),
-      ScrollBar(horizontal) {
-  if (!show_scroll_buttons_) {
-    prev_button_->SetVisible(false);
-    next_button_->SetVisible(false);
-  }
-
-  AddChildView(prev_button_);
-  AddChildView(next_button_);
-  AddChildView(thumb_);
-
-  SetContextMenuController(this);
-  prev_button_->SetContextMenuController(this);
-  next_button_->SetContextMenuController(this);
-  thumb_->SetContextMenuController(this);
-}
-
-gfx::Rect BitmapScrollBar::GetTrackBounds() const {
-  gfx::Size prefsize = prev_button_->GetPreferredSize();
-  if (IsHorizontal()) {
-    if (!show_scroll_buttons_)
-      prefsize.set_width(0);
-    int new_width =
-        std::max(0, static_cast<int>(width() - (prefsize.width() * 2)));
-    gfx::Rect track_bounds(prefsize.width(), 0, new_width, prefsize.height());
-    return track_bounds;
-  }
-  if (!show_scroll_buttons_)
-    prefsize.set_height(0);
-  gfx::Rect track_bounds(0, prefsize.height(), prefsize.width(),
-                         std::max(0, height() - (prefsize.height() * 2)));
-  return track_bounds;
-}
-
-void BitmapScrollBar::SetImage(ScrollBarPart part,
-                               CustomButton::ButtonState state,
-                               SkBitmap* bitmap) {
-  DCHECK(part < PART_COUNT);
-  DCHECK(state < CustomButton::BS_COUNT);
-  switch (part) {
-    case PREV_BUTTON:
-      prev_button_->SetImage(state, bitmap);
-      break;
-    case NEXT_BUTTON:
-      next_button_->SetImage(state, bitmap);
-      break;
-    case THUMB_START_CAP:
-    case THUMB_MIDDLE:
-    case THUMB_END_CAP:
-    case THUMB_GRIPPY:
-    case THUMB_TRACK:
-      images_[part][state] = bitmap;
-      break;
-  }
-}
-
-void BitmapScrollBar::ScrollByAmount(ScrollAmount amount) {
-  ScrollBarController* controller = GetController();
-  int offset = contents_scroll_offset_;
-  switch (amount) {
-    case SCROLL_START:
-      offset = GetMinPosition();
-      break;
-    case SCROLL_END:
-      offset = GetMaxPosition();
-      break;
-    case SCROLL_PREV_LINE:
-      offset -= controller->GetScrollIncrement(this, false, false);
-      offset = std::max(GetMinPosition(), offset);
-      break;
-    case SCROLL_NEXT_LINE:
-      offset += controller->GetScrollIncrement(this, false, true);
-      offset = std::min(GetMaxPosition(), offset);
-      break;
-    case SCROLL_PREV_PAGE:
-      offset -= controller->GetScrollIncrement(this, true, false);
-      offset = std::max(GetMinPosition(), offset);
-      break;
-    case SCROLL_NEXT_PAGE:
-      offset += controller->GetScrollIncrement(this, true, true);
-      offset = std::min(GetMaxPosition(), offset);
-      break;
-  }
-  contents_scroll_offset_ = offset;
-  ScrollContentsToOffset();
-}
-
-void BitmapScrollBar::ScrollToThumbPosition(int thumb_position,
-                                            bool scroll_to_middle) {
-  contents_scroll_offset_ =
-      CalculateContentsOffset(thumb_position, scroll_to_middle);
-  if (contents_scroll_offset_ < GetMinPosition()) {
-    contents_scroll_offset_ = GetMinPosition();
-  } else if (contents_scroll_offset_ > GetMaxPosition()) {
-    contents_scroll_offset_ = GetMaxPosition();
-  }
-  ScrollContentsToOffset();
-  SchedulePaint();
-}
-
-void BitmapScrollBar::ScrollByContentsOffset(int contents_offset) {
-  contents_scroll_offset_ -= contents_offset;
-  if (contents_scroll_offset_ < GetMinPosition()) {
-    contents_scroll_offset_ = GetMinPosition();
-  } else if (contents_scroll_offset_ > GetMaxPosition()) {
-    contents_scroll_offset_ = GetMaxPosition();
-  }
-  ScrollContentsToOffset();
-}
-
-void BitmapScrollBar::TrackClicked() {
-  if (last_scroll_amount_ != SCROLL_NONE)
-    ScrollByAmount(last_scroll_amount_);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BitmapScrollBar, View implementation:
-
-gfx::Size BitmapScrollBar::GetPreferredSize() {
-  // In this case, we're returning the desired width of the scrollbar and its
-  // minimum allowable height.
-  gfx::Size button_prefsize = prev_button_->GetPreferredSize();
-  return gfx::Size(button_prefsize.width(), button_prefsize.height() * 2);
-}
-
-void BitmapScrollBar::Paint(ChromeCanvas* canvas) {
-  // Paint the track.
-  gfx::Rect track_bounds = GetTrackBounds();
-  canvas->TileImageInt(*images_[THUMB_TRACK][thumb_track_state_],
-                       track_bounds.x(), track_bounds.y(),
-                       track_bounds.width(), track_bounds.height());
-}
-
-void BitmapScrollBar::Layout() {
-  // Size and place the two scroll buttons.
-  if (show_scroll_buttons_) {
-    gfx::Size prefsize = prev_button_->GetPreferredSize();
-    prev_button_->SetBounds(0, 0, prefsize.width(), prefsize.height());
-    prefsize = next_button_->GetPreferredSize();
-    if (IsHorizontal()) {
-      next_button_->SetBounds(width() - prefsize.width(), 0, prefsize.width(),
-                              prefsize.height());
-    } else {
-      next_button_->SetBounds(0, height() - prefsize.height(), prefsize.width(),
-                              prefsize.height());
-    }
-  } else {
-    prev_button_->SetBounds(0, 0, 0, 0);
-    next_button_->SetBounds(0, 0, 0, 0);
-  }
-
-  // Size and place the thumb
-  gfx::Size thumb_prefsize = thumb_->GetPreferredSize();
-  gfx::Rect track_bounds = GetTrackBounds();
-
-  // Preserve the height/width of the thumb (depending on orientation) as set
-  // by the last call to |Update|, but coerce the width/height to be the
-  // appropriate value for the bitmaps provided.
-  if (IsHorizontal()) {
-    thumb_->SetBounds(thumb_->x(), thumb_->y(), thumb_->width(),
-                      thumb_prefsize.height());
-  } else {
-    thumb_->SetBounds(thumb_->x(), thumb_->y(), thumb_prefsize.width(),
-                      thumb_->height());
-  }
-
-  // Hide the thumb if the track isn't tall enough to display even a tiny
-  // thumb. The user can only use the mousewheel, scroll buttons or keyboard
-  // in this scenario.
-  if ((IsHorizontal() && (track_bounds.width() < thumb_prefsize.width()) ||
-      (!IsHorizontal() && (track_bounds.height() < thumb_prefsize.height())))) {
-    thumb_->SetVisible(false);
-  } else if (!thumb_->IsVisible()) {
-    thumb_->SetVisible(true);
-  }
-}
-
-bool BitmapScrollBar::OnMousePressed(const MouseEvent& event) {
-  if (event.IsOnlyLeftMouseButton()) {
-    SetThumbTrackState(CustomButton::BS_PUSHED);
-    gfx::Rect thumb_bounds = thumb_->bounds();
-    if (IsHorizontal()) {
-      if (event.x() < thumb_bounds.x()) {
-        last_scroll_amount_ = SCROLL_PREV_PAGE;
-      } else if (event.x() > thumb_bounds.right()) {
-        last_scroll_amount_ = SCROLL_NEXT_PAGE;
-      }
-    } else {
-      if (event.y() < thumb_bounds.y()) {
-        last_scroll_amount_ = SCROLL_PREV_PAGE;
-      } else if (event.y() > thumb_bounds.bottom()) {
-        last_scroll_amount_ = SCROLL_NEXT_PAGE;
-      }
-    }
-    TrackClicked();
-    repeater_.Start();
-  }
-  return true;
-}
-
-void BitmapScrollBar::OnMouseReleased(const MouseEvent& event, bool canceled) {
-  SetThumbTrackState(CustomButton::BS_NORMAL);
-  repeater_.Stop();
-  View::OnMouseReleased(event, canceled);
-}
-
-bool BitmapScrollBar::OnMouseWheel(const MouseWheelEvent& event) {
-  ScrollByContentsOffset(event.GetOffset());
-  return true;
-}
-
-bool BitmapScrollBar::OnKeyPressed(const KeyEvent& event) {
-  ScrollAmount amount = SCROLL_NONE;
-  switch(event.GetCharacter()) {
-    case VK_UP:
-      if (!IsHorizontal())
-        amount = SCROLL_PREV_LINE;
-      break;
-    case VK_DOWN:
-      if (!IsHorizontal())
-        amount = SCROLL_NEXT_LINE;
-      break;
-    case VK_LEFT:
-      if (IsHorizontal())
-        amount = SCROLL_PREV_LINE;
-      break;
-    case VK_RIGHT:
-      if (IsHorizontal())
-        amount = SCROLL_NEXT_LINE;
-      break;
-    case VK_PRIOR:
-      amount = SCROLL_PREV_PAGE;
-      break;
-    case VK_NEXT:
-      amount = SCROLL_NEXT_PAGE;
-      break;
-    case VK_HOME:
-      amount = SCROLL_START;
-      break;
-    case VK_END:
-      amount = SCROLL_END;
-      break;
-  }
-  if (amount != SCROLL_NONE) {
-    ScrollByAmount(amount);
-    return true;
-  }
-  return false;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BitmapScrollBar, ContextMenuController implementation:
-
-enum ScrollBarContextMenuCommands {
-  ScrollBarContextMenuCommand_ScrollHere = 1,
-  ScrollBarContextMenuCommand_ScrollStart,
-  ScrollBarContextMenuCommand_ScrollEnd,
-  ScrollBarContextMenuCommand_ScrollPageUp,
-  ScrollBarContextMenuCommand_ScrollPageDown,
-  ScrollBarContextMenuCommand_ScrollPrev,
-  ScrollBarContextMenuCommand_ScrollNext
-};
-
-void BitmapScrollBar::ShowContextMenu(View* source,
-                                      int x,
-                                      int y,
-                                      bool is_mouse_gesture) {
-  Widget* widget = GetWidget();
-  gfx::Rect widget_bounds;
-  widget->GetBounds(&widget_bounds, true);
-  gfx::Point temp_pt(x - widget_bounds.x(), y - widget_bounds.y());
-  View::ConvertPointFromWidget(this, &temp_pt);
-  context_menu_mouse_position_ = IsHorizontal() ? temp_pt.x() : temp_pt.y();
-
-  Menu menu(this, Menu::TOPLEFT, GetWidget()->GetNativeView());
-  menu.AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollHere);
-  menu.AppendSeparator();
-  menu.AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollStart);
-  menu.AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollEnd);
-  menu.AppendSeparator();
-  menu.AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPageUp);
-  menu.AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPageDown);
-  menu.AppendSeparator();
-  menu.AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollPrev);
-  menu.AppendDelegateMenuItem(ScrollBarContextMenuCommand_ScrollNext);
-  menu.RunMenuAt(x, y);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BitmapScrollBar, Menu::Delegate implementation:
-
-std::wstring BitmapScrollBar::GetLabel(int id) const {
-  switch (id) {
-    case ScrollBarContextMenuCommand_ScrollHere:
-      return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLHERE);
-    case ScrollBarContextMenuCommand_ScrollStart:
-      if (IsHorizontal())
-        return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLLEFTEDGE);
-      return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLHOME);
-    case ScrollBarContextMenuCommand_ScrollEnd:
-      if (IsHorizontal())
-        return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLRIGHTEDGE);
-      return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLEND);
-    case ScrollBarContextMenuCommand_ScrollPageUp:
-      if (IsHorizontal())
-        return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLPAGEUP);
-      return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLPAGEUP);
-    case ScrollBarContextMenuCommand_ScrollPageDown:
-      if (IsHorizontal())
-        return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLPAGEDOWN);
-      return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLPAGEDOWN);
-    case ScrollBarContextMenuCommand_ScrollPrev:
-      if (IsHorizontal())
-        return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLLEFT);
-      return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLUP);
-    case ScrollBarContextMenuCommand_ScrollNext:
-      if (IsHorizontal())
-        return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLRIGHT);
-      return l10n_util::GetString(IDS_SCROLLBAR_CXMENU_SCROLLDOWN);
-  }
-  NOTREACHED() << "Invalid BitmapScrollBar Context Menu command!";
-  return L"";
-}
-
-bool BitmapScrollBar::IsCommandEnabled(int id) const {
-  switch (id) {
-    case ScrollBarContextMenuCommand_ScrollPageUp:
-    case ScrollBarContextMenuCommand_ScrollPageDown:
-      return !IsHorizontal();
-  }
-  return true;
-}
-
-void BitmapScrollBar::ExecuteCommand(int id) {
-  switch (id) {
-    case ScrollBarContextMenuCommand_ScrollHere:
-      ScrollToThumbPosition(context_menu_mouse_position_, true);
-      break;
-    case ScrollBarContextMenuCommand_ScrollStart:
-      ScrollByAmount(SCROLL_START);
-      break;
-    case ScrollBarContextMenuCommand_ScrollEnd:
-      ScrollByAmount(SCROLL_END);
-      break;
-    case ScrollBarContextMenuCommand_ScrollPageUp:
-      ScrollByAmount(SCROLL_PREV_PAGE);
-      break;
-    case ScrollBarContextMenuCommand_ScrollPageDown:
-      ScrollByAmount(SCROLL_NEXT_PAGE);
-      break;
-    case ScrollBarContextMenuCommand_ScrollPrev:
-      ScrollByAmount(SCROLL_PREV_LINE);
-      break;
-    case ScrollBarContextMenuCommand_ScrollNext:
-      ScrollByAmount(SCROLL_NEXT_LINE);
-      break;
-  }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BitmapScrollBar, ButtonListener implementation:
-
-void BitmapScrollBar::ButtonPressed(Button* sender) {
-  if (sender == prev_button_) {
-    ScrollByAmount(SCROLL_PREV_LINE);
-  } else if (sender == next_button_) {
-    ScrollByAmount(SCROLL_NEXT_LINE);
-  }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BitmapScrollBar, ScrollBar implementation:
-
-void BitmapScrollBar::Update(int viewport_size, int content_size,
-                             int contents_scroll_offset) {
-  ScrollBar::Update(viewport_size, content_size, contents_scroll_offset);
-
-  // Make sure contents_size is always > 0 to avoid divide by zero errors in
-  // calculations throughout this code.
-  contents_size_ = std::max(1, content_size);
-
-  if (content_size < 0)
-    content_size = 0;
-  if (contents_scroll_offset < 0)
-    contents_scroll_offset = 0;
-  if (contents_scroll_offset > content_size)
-    contents_scroll_offset = content_size;
-
-  // Thumb Height and Thumb Pos.
-  // The height of the thumb is the ratio of the Viewport height to the
-  // content size multiplied by the height of the thumb track.
-  double ratio = static_cast<double>(viewport_size) / contents_size_;
-  int thumb_size = static_cast<int>(ratio * GetTrackSize());
-  thumb_->SetSize(thumb_size);
-
-  int thumb_position = CalculateThumbPosition(contents_scroll_offset);
-  thumb_->SetPosition(thumb_position);
-}
-
-int BitmapScrollBar::GetLayoutSize() const {
-  gfx::Size prefsize = prev_button_->GetPreferredSize();
-  return IsHorizontal() ? prefsize.height() : prefsize.width();
-}
-
-int BitmapScrollBar::GetPosition() const {
-  return thumb_->GetPosition();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BitmapScrollBar, private:
-
-void BitmapScrollBar::ScrollContentsToOffset() {
-  GetController()->ScrollToPosition(this, contents_scroll_offset_);
-  thumb_->SetPosition(CalculateThumbPosition(contents_scroll_offset_));
-}
-
-int BitmapScrollBar::GetTrackSize() const {
-  gfx::Rect track_bounds = GetTrackBounds();
-  return IsHorizontal() ? track_bounds.width() : track_bounds.height();
-}
-
-int BitmapScrollBar::CalculateThumbPosition(int contents_scroll_offset) const {
-  return (contents_scroll_offset * GetTrackSize()) / contents_size_;
-}
-
-int BitmapScrollBar::CalculateContentsOffset(int thumb_position,
-                                             bool scroll_to_middle) const {
-  if (scroll_to_middle)
-    thumb_position = thumb_position - (thumb_->GetSize() / 2);
-  return (thumb_position * contents_size_) / GetTrackSize();
-}
-
-void BitmapScrollBar::SetThumbTrackState(CustomButton::ButtonState state) {
-  thumb_track_state_ = state;
-  SchedulePaint();
-}
-
-}  // namespace views