Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / ash / system / tray / tray_details_view.cc
1 // Copyright (c) 2012 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/tray_details_view.h"
6
7 #include "ash/system/tray/fixed_sized_scroll_view.h"
8 #include "ash/system/tray/system_tray.h"
9 #include "ash/system/tray/system_tray_item.h"
10 #include "ash/system/tray/tray_constants.h"
11 #include "ui/gfx/canvas.h"
12 #include "ui/views/background.h"
13 #include "ui/views/border.h"
14 #include "ui/views/controls/scroll_view.h"
15 #include "ui/views/layout/box_layout.h"
16
17 namespace ash {
18
19 class ScrollSeparator : public views::View {
20  public:
21   ScrollSeparator() {}
22
23   virtual ~ScrollSeparator() {}
24
25  private:
26   // Overriden from views::View.
27   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
28     canvas->FillRect(gfx::Rect(0, height() / 2, width(), 1), kBorderLightColor);
29   }
30   virtual gfx::Size GetPreferredSize() OVERRIDE {
31     return gfx::Size(1, kTrayPopupScrollSeparatorHeight);
32   }
33
34   DISALLOW_COPY_AND_ASSIGN(ScrollSeparator);
35 };
36
37 class ScrollBorder : public views::Border {
38  public:
39   ScrollBorder() {}
40   virtual ~ScrollBorder() {}
41
42   void set_visible(bool visible) { visible_ = visible; }
43
44  private:
45   // Overridden from views::Border.
46   virtual void Paint(const views::View& view, gfx::Canvas* canvas) OVERRIDE {
47     if (!visible_)
48       return;
49     canvas->FillRect(gfx::Rect(0, view.height() - 1, view.width(), 1),
50                      kBorderLightColor);
51   }
52
53   virtual gfx::Insets GetInsets() const OVERRIDE {
54     return gfx::Insets(0, 0, 1, 0);
55   }
56
57   virtual gfx::Size GetMinimumSize() const OVERRIDE {
58     return gfx::Size(0, 1);
59   }
60
61   bool visible_;
62
63   DISALLOW_COPY_AND_ASSIGN(ScrollBorder);
64 };
65
66 TrayDetailsView::TrayDetailsView(SystemTrayItem* owner)
67     : owner_(owner),
68       footer_(NULL),
69       scroller_(NULL),
70       scroll_content_(NULL),
71       scroll_border_(NULL) {
72   SetLayoutManager(new views::BoxLayout(views::BoxLayout::kVertical,
73       0, 0, 0));
74   set_background(views::Background::CreateSolidBackground(kBackgroundColor));
75 }
76
77 TrayDetailsView::~TrayDetailsView() {
78 }
79
80 void TrayDetailsView::CreateSpecialRow(int string_id,
81                                        ViewClickListener* listener) {
82   DCHECK(!footer_);
83   footer_ = new SpecialPopupRow();
84   footer_->SetTextLabel(string_id, listener);
85   AddChildViewAt(footer_, child_count());
86 }
87
88 void TrayDetailsView::CreateScrollableList() {
89   DCHECK(!scroller_);
90   scroll_content_ = new views::View;
91   scroll_content_->SetLayoutManager(new views::BoxLayout(
92       views::BoxLayout::kVertical, 0, 0, 1));
93   scroller_ = new FixedSizedScrollView;
94   scroller_->SetContentsView(scroll_content_);
95
96   // Note: |scroller_| takes ownership of |scroll_border_|.
97   scroll_border_ = new ScrollBorder;
98   scroller_->SetBorder(scoped_ptr<views::Border>(scroll_border_));
99
100   AddChildView(scroller_);
101 }
102
103 void TrayDetailsView::AddScrollSeparator() {
104   DCHECK(scroll_content_);
105   // Do not draw the separator if it is the very first item
106   // in the scrollable list.
107   if (scroll_content_->has_children())
108     scroll_content_->AddChildView(new ScrollSeparator);
109 }
110
111 void TrayDetailsView::Reset() {
112   RemoveAllChildViews(true);
113   footer_ = NULL;
114   scroller_ = NULL;
115   scroll_content_ = NULL;
116 }
117
118 void TrayDetailsView::TransitionToDefaultView() {
119   // Cache pointer to owner in this function scope. TrayDetailsView will be
120   // deleted after called ShowDefaultView.
121   SystemTrayItem* owner = owner_;
122   if (footer_ && footer_->content() && footer_->content()->HasFocus())
123     owner->set_restore_focus(true);
124   owner->system_tray()->ShowDefaultView(BUBBLE_USE_EXISTING);
125   owner->set_restore_focus(false);
126 }
127
128 void TrayDetailsView::Layout() {
129   if (bounds().IsEmpty()) {
130     views::View::Layout();
131     return;
132   }
133
134   if (scroller_) {
135     scroller_->set_fixed_size(gfx::Size());
136     gfx::Size size = GetPreferredSize();
137
138     // Set the scroller to fill the space above the bottom row, so that the
139     // bottom row of the detailed view will always stay just above the footer.
140     gfx::Size scroller_size = scroll_content_->GetPreferredSize();
141     scroller_->set_fixed_size(
142         gfx::Size(width() + scroller_->GetScrollBarWidth(),
143                   scroller_size.height() - (size.height() - height())));
144   }
145
146   views::View::Layout();
147
148   if (footer_) {
149     // Always make sure the footer element is bottom aligned.
150     gfx::Rect fbounds = footer_->bounds();
151     fbounds.set_y(height() - footer_->height());
152     footer_->SetBoundsRect(fbounds);
153   }
154 }
155
156 void TrayDetailsView::OnPaintBorder(gfx::Canvas* canvas) {
157   if (scroll_border_) {
158     int index = GetIndexOf(scroller_);
159     if (index < child_count() - 1 && child_at(index + 1) != footer_)
160       scroll_border_->set_visible(true);
161     else
162       scroll_border_->set_visible(false);
163   }
164
165   views::View::OnPaintBorder(canvas);
166 }
167
168 }  // namespace ash