chrome/browser/ui/views/infobars/infobar_view.h

   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 "components/infobars/core/infobar.h"
  11 #include "components/infobars/core/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_types.h"
  15 #include "ui/views/focus/external_focus_tracker.h"
  16
  17 namespace ui {
  18 class MenuModel;
  19 }
  20
  21 namespace views {
  22 class ImageButton;
  23 class ImageView;
  24 class Label;
  25 class LabelButton;
  26 class Link;
  27 class LinkListener;
  28 class MenuButton;
  29 class MenuButtonListener;
  30 class MenuRunner;
  31 }  // namespace views
  32
  33 class InfoBarView : public infobars::InfoBar,
  34                     public views::View,
  35                     public views::ButtonListener,
  36                     public views::ExternalFocusTracker {
  37  public:
  38   explicit InfoBarView(scoped_ptr<infobars::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
  70   // Given |labels| and the total |available_width| to display them in, sets
  71   // each label's size so that the longest label shrinks until it reaches the
  72   // length of the next-longest label, then both shrink until reaching the
  73   // length of the next-longest, and so forth.
  74   static void AssignWidths(Labels* labels, int available_width);
  75
  76   // views::View:
  77   virtual void Layout() OVERRIDE;
  78   virtual void ViewHierarchyChanged(
  79       const ViewHierarchyChangedDetails& details) OVERRIDE;
  80
  81   // views::ButtonListener:
  82   // NOTE: This must not be called if we're unowned.  (Subclasses should ignore
  83   // calls to ButtonPressed() in this case.)
  84   virtual void ButtonPressed(views::Button* sender,
  85                              const ui::Event& event) OVERRIDE;
  86
  87   // Returns the minimum width the content (that is, everything between the icon
  88   // and the close button) can be shrunk to.  This is used to prevent the close
  89   // button from overlapping views that cannot be shrunk any further.
  90   virtual int ContentMinimumWidth() const;
  91
  92   // These return x coordinates delimiting the usable area for subclasses to lay
  93   // out their controls.
  94   int StartX() const;
  95   int EndX() const;
  96
  97   // Given a |view|, returns the centered y position within us, taking into
  98   // account animation so the control "slides in" (or out) as we animate open
  99   // and closed.
 100   int OffsetY(views::View* view) const;
 101
 102   // Convenience getter.
 103   const infobars::InfoBarContainer::Delegate* container_delegate() const;
 104
 105   // Shows a menu at the specified position.
 106   // NOTE: This must not be called if we're unowned.  (Subclasses should ignore
 107   // calls to RunMenu() in this case.)
 108   void RunMenuAt(ui::MenuModel* menu_model,
 109                  views::MenuButton* button,
 110                  views::MenuAnchorPosition anchor);
 111
 112  private:
 113   // Does the actual work for AssignWidths().  Assumes |labels| is sorted by
 114   // decreasing preferred width.
 115   static void AssignWidthsSorted(Labels* labels, int available_width);
 116
 117   // InfoBar:
 118   virtual void PlatformSpecificShow(bool animate) OVERRIDE;
 119   virtual void PlatformSpecificHide(bool animate) OVERRIDE;
 120   virtual void PlatformSpecificOnHeightsRecalculated() OVERRIDE;
 121
 122   // views::View:
 123   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
 124   virtual gfx::Size GetPreferredSize() const OVERRIDE;
 125   virtual void PaintChildren(gfx::Canvas* canvas,
 126                              const views::CullSet& cull_set) OVERRIDE;
 127
 128   // views::ExternalFocusTracker:
 129   virtual void OnWillChangeFocus(View* focused_before,
 130                                  View* focused_now) OVERRIDE;
 131
 132   // The optional icon at the left edge of the InfoBar.
 133   views::ImageView* icon_;
 134
 135   // The close button at the right edge of the InfoBar.
 136   views::ImageButton* close_button_;
 137
 138   // The paths for the InfoBarBackground to draw, sized according to the heights
 139   // above.
 140   SkPath fill_path_;
 141   SkPath stroke_path_;
 142
 143   // Used to run the menu.
 144   scoped_ptr<views::MenuRunner> menu_runner_;
 145
 146   DISALLOW_COPY_AND_ASSIGN(InfoBarView);
 147 };
 148
 149 #endif  // CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_VIEW_H_