views: Move the remaining files to ui/views/controls/.

views/controls/scroll_view.cc

Index: views/controls/scroll_view.cc
diff --git a/views/controls/scroll_view.cc b/views/controls/scroll_view.cc
deleted file mode 100644
index 43d8377c0430c36f1e5787efe84993f91cfa6de5..0000000000000000000000000000000000000000
--- a/views/controls/scroll_view.cc
+++ /dev/null
@@ -1,501 +0,0 @@
-// Copyright (c) 2011 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 "views/controls/scroll_view.h"
-
-#include "base/logging.h"
-#include "ui/views/controls/scrollbar/native_scroll_bar.h"
-#include "ui/views/widget/root_view.h"
-
-namespace views {
-
-const char* const ScrollView::kViewClassName = "views/ScrollView";
-
-// Viewport contains the contents View of the ScrollView.
-class Viewport : public View {
- public:
-  Viewport() {}
-  virtual ~Viewport() {}
-
-  virtual std::string GetClassName() const {
-    return "views/Viewport";
-  }
-
-  virtual void ScrollRectToVisible(const gfx::Rect& rect) {
-    if (!has_children() || !parent())
-      return;
-
-    View* contents = child_at(0);
-    gfx::Rect scroll_rect(rect);
-    scroll_rect.Offset(-contents->x(), -contents->y());
-    static_cast<ScrollView*>(parent())->ScrollContentsRegionToBeVisible(
-        scroll_rect);
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(Viewport);
-};
-
-
-ScrollView::ScrollView() {
-  Init(new NativeScrollBar(true), new NativeScrollBar(false), NULL);
-}
-
-ScrollView::ScrollView(ScrollBar* horizontal_scrollbar,
-                       ScrollBar* vertical_scrollbar,
-                       View* resize_corner) {
-  Init(horizontal_scrollbar, vertical_scrollbar, resize_corner);
-}
-
-ScrollView::~ScrollView() {
-  // If scrollbars are currently not used, delete them
-  if (!horiz_sb_->parent())
-    delete horiz_sb_;
-
-  if (!vert_sb_->parent())
-    delete vert_sb_;
-
-  if (resize_corner_ && !resize_corner_->parent())
-    delete resize_corner_;
-}
-
-void ScrollView::SetContents(View* a_view) {
-  if (contents_ && contents_ != a_view) {
-    viewport_->RemoveChildView(contents_);
-    delete contents_;
-    contents_ = NULL;
-  }
-
-  if (a_view) {
-    contents_ = a_view;
-    viewport_->AddChildView(contents_);
-  }
-
-  Layout();
-}
-
-View* ScrollView::GetContents() const {
-  return contents_;
-}
-
-void ScrollView::Init(ScrollBar* horizontal_scrollbar,
-                      ScrollBar* vertical_scrollbar,
-                      View* resize_corner) {
-  DCHECK(horizontal_scrollbar && vertical_scrollbar);
-
-  contents_ = NULL;
-  horiz_sb_ = horizontal_scrollbar;
-  vert_sb_ = vertical_scrollbar;
-  resize_corner_ = resize_corner;
-
-  viewport_ = new Viewport();
-  AddChildView(viewport_);
-
-  // Don't add the scrollbars as children until we discover we need them
-  // (ShowOrHideScrollBar).
-  horiz_sb_->SetVisible(false);
-  horiz_sb_->set_controller(this);
-  vert_sb_->SetVisible(false);
-  vert_sb_->set_controller(this);
-  if (resize_corner_)
-    resize_corner_->SetVisible(false);
-}
-
-// Make sure that a single scrollbar is created and visible as needed
-void ScrollView::SetControlVisibility(View* control, bool should_show) {
-  if (!control)
-    return;
-  if (should_show) {
-    if (!control->IsVisible()) {
-      AddChildView(control);
-      control->SetVisible(true);
-    }
-  } else {
-    RemoveChildView(control);
-    control->SetVisible(false);
-  }
-}
-
-void ScrollView::ComputeScrollBarsVisibility(const gfx::Size& vp_size,
-                                             const gfx::Size& content_size,
-                                             bool* horiz_is_shown,
-                                             bool* vert_is_shown) const {
-  // Try to fit both ways first, then try vertical bar only, then horizontal
-  // bar only, then defaults to both shown.
-  if (content_size.width() <= vp_size.width() &&
-      content_size.height() <= vp_size.height()) {
-    *horiz_is_shown = false;
-    *vert_is_shown = false;
-  } else if (content_size.width() <= vp_size.width() - GetScrollBarWidth()) {
-    *horiz_is_shown = false;
-    *vert_is_shown = true;
-  } else if (content_size.height() <= vp_size.height() - GetScrollBarHeight()) {
-    *horiz_is_shown = true;
-    *vert_is_shown = false;
-  } else {
-    *horiz_is_shown = true;
-    *vert_is_shown = true;
-  }
-}
-
-void ScrollView::Layout() {
-  // Most views will want to auto-fit the available space. Most of them want to
-  // use the all available width (without overflowing) and only overflow in
-  // height. Examples are HistoryView, MostVisitedView, DownloadTabView, etc.
-  // Other views want to fit in both ways. An example is PrintView. To make both
-  // happy, assume a vertical scrollbar but no horizontal scrollbar. To
-  // override this default behavior, the inner view has to calculate the
-  // available space, used ComputeScrollBarsVisibility() to use the same
-  // calculation that is done here and sets its bound to fit within.
-  gfx::Rect viewport_bounds = GetLocalBounds();
-  // Realign it to 0 so it can be used as-is for SetBounds().
-  viewport_bounds.set_origin(gfx::Point(0, 0));
-  // viewport_size is the total client space available.
-  gfx::Size viewport_size = viewport_bounds.size();
-  if (viewport_bounds.IsEmpty()) {
-    // There's nothing to layout.
-    return;
-  }
-
-  // Assumes a vertical scrollbar since most the current views are designed for
-  // this.
-  int horiz_sb_height = GetScrollBarHeight();
-  int vert_sb_width = GetScrollBarWidth();
-  viewport_bounds.set_width(viewport_bounds.width() - vert_sb_width);
-  // Update the bounds right now so the inner views can fit in it.
-  viewport_->SetBoundsRect(viewport_bounds);
-
-  // Give contents_ a chance to update its bounds if it depends on the
-  // viewport.
-  if (contents_)
-    contents_->Layout();
-
-  bool should_layout_contents = false;
-  bool horiz_sb_required = false;
-  bool vert_sb_required = false;
-  if (contents_) {
-    gfx::Size content_size = contents_->size();
-    ComputeScrollBarsVisibility(viewport_size,
-                                content_size,
-                                &horiz_sb_required,
-                                &vert_sb_required);
-  }
-  bool resize_corner_required = resize_corner_ && horiz_sb_required &&
-                                vert_sb_required;
-  // Take action.
-  SetControlVisibility(horiz_sb_, horiz_sb_required);
-  SetControlVisibility(vert_sb_, vert_sb_required);
-  SetControlVisibility(resize_corner_, resize_corner_required);
-
-  // Non-default.
-  if (horiz_sb_required) {
-    viewport_bounds.set_height(
-        std::max(0, viewport_bounds.height() - horiz_sb_height));
-    should_layout_contents = true;
-  }
-  // Default.
-  if (!vert_sb_required) {
-    viewport_bounds.set_width(viewport_bounds.width() + vert_sb_width);
-    should_layout_contents = true;
-  }
-
-  if (horiz_sb_required) {
-    horiz_sb_->SetBounds(0,
-                         viewport_bounds.bottom(),
-                         viewport_bounds.right(),
-                         horiz_sb_height);
-  }
-  if (vert_sb_required) {
-    vert_sb_->SetBounds(viewport_bounds.right(),
-                        0,
-                        vert_sb_width,
-                        viewport_bounds.bottom());
-  }
-  if (resize_corner_required) {
-    // Show the resize corner.
-    resize_corner_->SetBounds(viewport_bounds.right(),
-                              viewport_bounds.bottom(),
-                              vert_sb_width,
-                              horiz_sb_height);
-  }
-
-  // Update to the real client size with the visible scrollbars.
-  viewport_->SetBoundsRect(viewport_bounds);
-  if (should_layout_contents && contents_)
-    contents_->Layout();
-
-  CheckScrollBounds();
-  SchedulePaint();
-  UpdateScrollBarPositions();
-}
-
-int ScrollView::CheckScrollBounds(int viewport_size,
-                                  int content_size,
-                                  int current_pos) {
-  int max = std::max(content_size - viewport_size, 0);
-  if (current_pos < 0)
-    current_pos = 0;
-  else if (current_pos > max)
-    current_pos = max;
-  return current_pos;
-}
-
-void ScrollView::CheckScrollBounds() {
-  if (contents_) {
-    int x, y;
-
-    x = CheckScrollBounds(viewport_->width(),
-                          contents_->width(),
-                          -contents_->x());
-    y = CheckScrollBounds(viewport_->height(),
-                          contents_->height(),
-                          -contents_->y());
-
-    // This is no op if bounds are the same
-    contents_->SetBounds(-x, -y, contents_->width(), contents_->height());
-  }
-}
-
-gfx::Rect ScrollView::GetVisibleRect() const {
-  if (!contents_)
-    return gfx::Rect();
-
-  const int x =
-      (horiz_sb_ && horiz_sb_->IsVisible()) ? horiz_sb_->GetPosition() : 0;
-  const int y =
-      (vert_sb_ && vert_sb_->IsVisible()) ? vert_sb_->GetPosition() : 0;
-  return gfx::Rect(x, y, viewport_->width(), viewport_->height());
-}
-
-void ScrollView::ScrollContentsRegionToBeVisible(const gfx::Rect& rect) {
-  if (!contents_ || ((!horiz_sb_ || !horiz_sb_->IsVisible()) &&
-                     (!vert_sb_ || !vert_sb_->IsVisible()))) {
-    return;
-  }
-
-  // Figure out the maximums for this scroll view.
-  const int contents_max_x =
-      std::max(viewport_->width(), contents_->width());
-  const int contents_max_y =
-      std::max(viewport_->height(), contents_->height());
-
-  // Make sure x and y are within the bounds of [0,contents_max_*].
-  int x = std::max(0, std::min(contents_max_x, rect.x()));
-  int y = std::max(0, std::min(contents_max_y, rect.y()));
-
-  // Figure out how far and down the rectangle will go taking width
-  // and height into account.  This will be "clipped" by the viewport.
-  const int max_x = std::min(contents_max_x,
-                             x + std::min(rect.width(), viewport_->width()));
-  const int max_y = std::min(contents_max_y,
-                             y + std::min(rect.height(), viewport_->height()));
-
-  // See if the rect is already visible. Note the width is (max_x - x)
-  // and the height is (max_y - y) to take into account the clipping of
-  // either viewport or the content size.
-  const gfx::Rect vis_rect = GetVisibleRect();
-  if (vis_rect.Contains(gfx::Rect(x, y, max_x - x, max_y - y)))
-    return;
-
-  // Shift contents_'s X and Y so that the region is visible. If we
-  // need to shift up or left from where we currently are then we need
-  // to get it so that the content appears in the upper/left
-  // corner. This is done by setting the offset to -X or -Y.  For down
-  // or right shifts we need to make sure it appears in the
-  // lower/right corner. This is calculated by taking max_x or max_y
-  // and scaling it back by the size of the viewport.
-  const int new_x =
-      (vis_rect.x() > x) ? x : std::max(0, max_x - viewport_->width());
-  const int new_y =
-      (vis_rect.y() > y) ? y : std::max(0, max_y - viewport_->height());
-
-  contents_->SetX(-new_x);
-  contents_->SetY(-new_y);
-  UpdateScrollBarPositions();
-}
-
-void ScrollView::UpdateScrollBarPositions() {
-  if (!contents_) {
-    return;
-  }
-
-  if (horiz_sb_->IsVisible()) {
-    int vw = viewport_->width();
-    int cw = contents_->width();
-    int origin = contents_->x();
-    horiz_sb_->Update(vw, cw, -origin);
-  }
-  if (vert_sb_->IsVisible()) {
-    int vh = viewport_->height();
-    int ch = contents_->height();
-    int origin = contents_->y();
-    vert_sb_->Update(vh, ch, -origin);
-  }
-}
-
-// TODO(ACW): We should really use ScrollWindowEx as needed
-void ScrollView::ScrollToPosition(ScrollBar* source, int position) {
-  if (!contents_)
-    return;
-
-  if (source == horiz_sb_ && horiz_sb_->IsVisible()) {
-    int vw = viewport_->width();
-    int cw = contents_->width();
-    int origin = contents_->x();
-    if (-origin != position) {
-      int max_pos = std::max(0, cw - vw);
-      if (position < 0)
-        position = 0;
-      else if (position > max_pos)
-        position = max_pos;
-      contents_->SetX(-position);
-      contents_->SchedulePaintInRect(contents_->GetVisibleBounds());
-    }
-  } else if (source == vert_sb_ && vert_sb_->IsVisible()) {
-    int vh = viewport_->height();
-    int ch = contents_->height();
-    int origin = contents_->y();
-    if (-origin != position) {
-      int max_pos = std::max(0, ch - vh);
-      if (position < 0)
-        position = 0;
-      else if (position > max_pos)
-        position = max_pos;
-      contents_->SetY(-position);
-      contents_->SchedulePaintInRect(contents_->GetVisibleBounds());
-    }
-  }
-}
-
-int ScrollView::GetScrollIncrement(ScrollBar* source, bool is_page,
-                                   bool is_positive) {
-  bool is_horizontal = source->IsHorizontal();
-  int amount = 0;
-  View* view = GetContents();
-  if (view) {
-    if (is_page)
-      amount = view->GetPageScrollIncrement(this, is_horizontal, is_positive);
-    else
-      amount = view->GetLineScrollIncrement(this, is_horizontal, is_positive);
-    if (amount > 0)
-      return amount;
-  }
-  // No view, or the view didn't return a valid amount.
-  if (is_page)
-    return is_horizontal ? viewport_->width() : viewport_->height();
-  return is_horizontal ? viewport_->width() / 5 : viewport_->height() / 5;
-}
-
-bool ScrollView::OnKeyPressed(const KeyEvent& event) {
-  bool processed = false;
-
-  // Give vertical scrollbar priority
-  if (vert_sb_->IsVisible()) {
-    processed = vert_sb_->OnKeyPressed(event);
-  }
-
-  if (!processed && horiz_sb_->IsVisible()) {
-    processed = horiz_sb_->OnKeyPressed(event);
-  }
-  return processed;
-}
-
-bool ScrollView::OnMouseWheel(const MouseWheelEvent& e) {
-  bool processed = false;
-  // Give vertical scrollbar priority
-  if (vert_sb_->IsVisible()) {
-    processed = vert_sb_->OnMouseWheel(e);
-  }
-  if (!processed && horiz_sb_->IsVisible()) {
-    processed = horiz_sb_->OnMouseWheel(e);
-  }
-  return processed;
-}
-
-std::string ScrollView::GetClassName() const {
-  return kViewClassName;
-}
-
-int ScrollView::GetScrollBarWidth() const {
-  return vert_sb_->GetLayoutSize();
-}
-
-int ScrollView::GetScrollBarHeight() const {
-  return horiz_sb_->GetLayoutSize();
-}
-
-// VariableRowHeightScrollHelper ----------------------------------------------
-
-VariableRowHeightScrollHelper::VariableRowHeightScrollHelper(
-    Controller* controller) : controller_(controller) {
-}
-
-VariableRowHeightScrollHelper::~VariableRowHeightScrollHelper() {
-}
-
-int VariableRowHeightScrollHelper::GetPageScrollIncrement(
-    ScrollView* scroll_view, bool is_horizontal, bool is_positive) {
-  if (is_horizontal)
-    return 0;
-  // y coordinate is most likely negative.
-  int y = abs(scroll_view->GetContents()->y());
-  int vis_height = scroll_view->GetContents()->parent()->height();
-  if (is_positive) {
-    // Align the bottom most row to the top of the view.
-    int bottom = std::min(scroll_view->GetContents()->height() - 1,
-                          y + vis_height);
-    RowInfo bottom_row_info = GetRowInfo(bottom);
-    // If 0, ScrollView will provide a default value.
-    return std::max(0, bottom_row_info.origin - y);
-  } else {
-    // Align the row on the previous page to to the top of the view.
-    int last_page_y = y - vis_height;
-    RowInfo last_page_info = GetRowInfo(std::max(0, last_page_y));
-    if (last_page_y != last_page_info.origin)
-      return std::max(0, y - last_page_info.origin - last_page_info.height);
-    return std::max(0, y - last_page_info.origin);
-  }
-}
-
-int VariableRowHeightScrollHelper::GetLineScrollIncrement(
-    ScrollView* scroll_view, bool is_horizontal, bool is_positive) {
-  if (is_horizontal)
-    return 0;
-  // y coordinate is most likely negative.
-  int y = abs(scroll_view->GetContents()->y());
-  RowInfo row = GetRowInfo(y);
-  if (is_positive) {
-    return row.height - (y - row.origin);
-  } else if (y == row.origin) {
-    row = GetRowInfo(std::max(0, row.origin - 1));
-    return y - row.origin;
-  } else {
-    return y - row.origin;
-  }
-}
-
-VariableRowHeightScrollHelper::RowInfo
-    VariableRowHeightScrollHelper::GetRowInfo(int y) {
-  return controller_->GetRowInfo(y);
-}
-
-// FixedRowHeightScrollHelper -----------------------------------------------
-
-FixedRowHeightScrollHelper::FixedRowHeightScrollHelper(int top_margin,
-                                                       int row_height)
-    : VariableRowHeightScrollHelper(NULL),
-      top_margin_(top_margin),
-      row_height_(row_height) {
-  DCHECK_GT(row_height, 0);
-}
-
-VariableRowHeightScrollHelper::RowInfo
-    FixedRowHeightScrollHelper::GetRowInfo(int y) {
-  if (y < top_margin_)
-    return RowInfo(0, top_margin_);
-  return RowInfo((y - top_margin_) / row_height_ * row_height_ + top_margin_,
-                 row_height_);
-}
-
-}  // namespace views