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