infobar_view.h revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
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#ifndef CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_VIEW_H_
6#define CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_VIEW_H_
7
8#include "base/basictypes.h"
9#include "base/compiler_specific.h"
10#include "chrome/browser/infobars/infobar.h"
11#include "chrome/browser/infobars/infobar_container.h"
12#include "third_party/skia/include/core/SkPath.h"
13#include "ui/views/controls/button/button.h"
14#include "ui/views/controls/menu/menu_item_view.h"
15#include "ui/views/focus/external_focus_tracker.h"
16
17namespace ui {
18class MenuModel;
19}
20
21namespace views {
22class ImageButton;
23class ImageView;
24class Label;
25class LabelButton;
26class Link;
27class LinkListener;
28class MenuButton;
29class MenuButtonListener;
30class MenuRunner;
31}  // namespace views
32
33class InfoBarView : public InfoBar,
34                    public views::View,
35                    public views::ButtonListener,
36                    public views::ExternalFocusTracker {
37 public:
38  explicit InfoBarView(scoped_ptr<InfoBarDelegate> delegate);
39
40  const SkPath& fill_path() const { return fill_path_; }
41  const SkPath& stroke_path() const { return stroke_path_; }
42
43 protected:
44  typedef std::vector<views::Label*> Labels;
45
46  static const int kButtonButtonSpacing;
47  static const int kEndOfLabelSpacing;
48
49  virtual ~InfoBarView();
50
51  // Creates a label with the appropriate font and color for an infobar.
52  views::Label* CreateLabel(const base::string16& text) const;
53
54  // Creates a link with the appropriate font and color for an infobar.
55  // NOTE: Subclasses must ignore link clicks if we're unowned.
56  views::Link* CreateLink(const base::string16& text,
57                          views::LinkListener* listener) const;
58
59  // Creates a menu button with an infobar-specific appearance.
60  // NOTE: Subclasses must ignore button presses if we're unowned.
61  static views::MenuButton* CreateMenuButton(
62      const base::string16& text,
63      views::MenuButtonListener* menu_button_listener);
64
65  // Creates a button with an infobar-specific appearance.
66  // NOTE: Subclasses must ignore button presses if we're unowned.
67  static views::LabelButton* CreateLabelButton(views::ButtonListener* listener,
68                                               const base::string16& text,
69                                               bool needs_elevation);
70
71  // Given |labels| and the total |available_width| to display them in, sets
72  // each label's size so that the longest label shrinks until it reaches the
73  // length of the next-longest label, then both shrink until reaching the
74  // length of the next-longest, and so forth.
75  static void AssignWidths(Labels* labels, int available_width);
76
77  // views::View:
78  virtual void Layout() OVERRIDE;
79  virtual void ViewHierarchyChanged(
80      const ViewHierarchyChangedDetails& details) OVERRIDE;
81
82  // views::ButtonListener:
83  // NOTE: This must not be called if we're unowned.  (Subclasses should ignore
84  // calls to ButtonPressed() in this case.)
85  virtual void ButtonPressed(views::Button* sender,
86                             const ui::Event& event) OVERRIDE;
87
88  // Returns the minimum width the content (that is, everything between the icon
89  // and the close button) can be shrunk to.  This is used to prevent the close
90  // button from overlapping views that cannot be shrunk any further.
91  virtual int ContentMinimumWidth();
92
93  // These return x coordinates delimiting the usable area for subclasses to lay
94  // out their controls.
95  int StartX() const;
96  int EndX() const;
97
98  // Given a |view|, returns the centered y position within us, taking into
99  // account animation so the control "slides in" (or out) as we animate open
100  // and closed.
101  int OffsetY(views::View* view) const;
102
103  // Convenience getter.
104  const InfoBarContainer::Delegate* container_delegate() const;
105
106  // Shows a menu at the specified position.
107  // NOTE: This must not be called if we're unowned.  (Subclasses should ignore
108  // calls to RunMenu() in this case.)
109  void RunMenuAt(ui::MenuModel* menu_model,
110                 views::MenuButton* button,
111                 views::MenuItemView::AnchorPosition anchor);
112
113 private:
114  static const int kHorizontalPadding;
115  static const int kCloseButtonSpacing;
116
117  // Does the actual work for AssignWidths().  Assumes |labels| is sorted by
118  // decreasing preferred width.
119  static void AssignWidthsSorted(Labels* labels, int available_width);
120
121  // InfoBar:
122  virtual void PlatformSpecificShow(bool animate) OVERRIDE;
123  virtual void PlatformSpecificHide(bool animate) OVERRIDE;
124  virtual void PlatformSpecificOnHeightsRecalculated() OVERRIDE;
125
126  // views::View:
127  virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
128  virtual gfx::Size GetPreferredSize() OVERRIDE;
129  virtual void PaintChildren(gfx::Canvas* canvas) OVERRIDE;
130
131  // views::ExternalFocusTracker:
132  virtual void OnWillChangeFocus(View* focused_before,
133                                 View* focused_now) OVERRIDE;
134
135  // The optional icon at the left edge of the InfoBar.
136  views::ImageView* icon_;
137
138  // The close button at the right edge of the InfoBar.
139  views::ImageButton* close_button_;
140
141  // The paths for the InfoBarBackground to draw, sized according to the heights
142  // above.
143  SkPath fill_path_;
144  SkPath stroke_path_;
145
146  // Used to run the menu.
147  scoped_ptr<views::MenuRunner> menu_runner_;
148
149  DISALLOW_COPY_AND_ASSIGN(InfoBarView);
150};
151
152#endif  // CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_VIEW_H_
153