1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ash/system/tray/fixed_sized_scroll_view.h"
6
7namespace ash {
8
9FixedSizedScrollView::FixedSizedScrollView() {
10  set_notify_enter_exit_on_child(true);
11}
12
13FixedSizedScrollView::~FixedSizedScrollView() {
14}
15
16void FixedSizedScrollView::SetContentsView(views::View* view) {
17  SetContents(view);
18  view->SetBoundsRect(gfx::Rect(view->GetPreferredSize()));
19}
20
21void FixedSizedScrollView::SetFixedSize(const gfx::Size& size) {
22  if (fixed_size_ == size)
23    return;
24  fixed_size_ = size;
25  PreferredSizeChanged();
26}
27
28gfx::Size FixedSizedScrollView::GetPreferredSize() const {
29  gfx::Size size = fixed_size_.IsEmpty() ?
30      contents()->GetPreferredSize() : fixed_size_;
31  gfx::Insets insets = GetInsets();
32  size.Enlarge(insets.width(), insets.height());
33  return size;
34}
35
36void FixedSizedScrollView::Layout() {
37  gfx::Rect bounds = gfx::Rect(contents()->GetPreferredSize());
38  bounds.set_width(std::max(0, width() - GetScrollBarWidth()));
39  contents()->SetBoundsRect(bounds);
40
41  views::ScrollView::Layout();
42  if (!vertical_scroll_bar()->visible()) {
43    gfx::Rect bounds = contents()->bounds();
44    bounds.set_width(bounds.width() + GetScrollBarWidth());
45    contents()->SetBoundsRect(bounds);
46  }
47}
48
49void FixedSizedScrollView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
50  gfx::Rect bounds = gfx::Rect(contents()->GetPreferredSize());
51  bounds.set_width(std::max(0, width() - GetScrollBarWidth()));
52  contents()->SetBoundsRect(bounds);
53}
54
55}  // namespace ash
56