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      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 
     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 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   static const int kButtonButtonSpacing;
     45   static const int kEndOfLabelSpacing;
     46 
     47   virtual ~InfoBarView();
     48 
     49   // Creates a label with the appropriate font and color for an infobar.
     50   views::Label* CreateLabel(const base::string16& text) const;
     51 
     52   // Creates a link with the appropriate font and color for an infobar.
     53   // NOTE: Subclasses must ignore link clicks if we're unowned.
     54   views::Link* CreateLink(const base::string16& text,
     55                           views::LinkListener* listener) const;
     56 
     57   // Creates a menu button with an infobar-specific appearance.
     58   // NOTE: Subclasses must ignore button presses if we're unowned.
     59   static views::MenuButton* CreateMenuButton(
     60       const base::string16& text,
     61       views::MenuButtonListener* menu_button_listener);
     62 
     63   // Creates a button with an infobar-specific appearance.
     64   // NOTE: Subclasses must ignore button presses if we're unowned.
     65   static views::LabelButton* CreateLabelButton(views::ButtonListener* listener,
     66                                                const base::string16& text,
     67                                                bool needs_elevation);
     68 
     69   // views::View:
     70   virtual void Layout() OVERRIDE;
     71   virtual 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   virtual void ButtonPressed(views::Button* sender,
     78                              const ui::Event& event) OVERRIDE;
     79 
     80   // Returns the minimum width the content (that is, everything between the icon
     81   // and the close button) can be shrunk to.  This is used to prevent the close
     82   // button from overlapping views that cannot be shrunk any further.
     83   virtual int ContentMinimumWidth() const;
     84 
     85   // These return x coordinates delimiting the usable area for subclasses to lay
     86   // out their controls.
     87   int StartX() const;
     88   int EndX() const;
     89 
     90   // Given a control with size |prefsize|, returns the centered y position
     91   // within us, taking into account animation so the control "slides in" (or
     92   // out) as we animate open and closed.
     93   int OffsetY(const gfx::Size& prefsize) const;
     94 
     95   // Convenience getter.
     96   const InfoBarContainer::Delegate* container_delegate() const;
     97 
     98   // Shows a menu at the specified position.
     99   // NOTE: This must not be called if we're unowned.  (Subclasses should ignore
    100   // calls to RunMenu() in this case.)
    101   void RunMenuAt(ui::MenuModel* menu_model,
    102                  views::MenuButton* button,
    103                  views::MenuItemView::AnchorPosition anchor);
    104 
    105  private:
    106   static const int kHorizontalPadding;
    107   static const int kCloseButtonSpacing;
    108 
    109   // InfoBar:
    110   virtual void PlatformSpecificShow(bool animate) OVERRIDE;
    111   virtual void PlatformSpecificHide(bool animate) OVERRIDE;
    112   virtual void PlatformSpecificOnHeightsRecalculated() OVERRIDE;
    113 
    114   // views::View:
    115   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
    116   virtual gfx::Size GetPreferredSize() OVERRIDE;
    117   virtual void PaintChildren(gfx::Canvas* canvas) OVERRIDE;
    118 
    119   // views::ExternalFocusTracker:
    120   virtual void OnWillChangeFocus(View* focused_before,
    121                                  View* focused_now) OVERRIDE;
    122 
    123   // The optional icon at the left edge of the InfoBar.
    124   views::ImageView* icon_;
    125 
    126   // The close button at the right edge of the InfoBar.
    127   views::ImageButton* close_button_;
    128 
    129   // The paths for the InfoBarBackground to draw, sized according to the heights
    130   // above.
    131   SkPath fill_path_;
    132   SkPath stroke_path_;
    133 
    134   // Used to run the menu.
    135   scoped_ptr<views::MenuRunner> menu_runner_;
    136 
    137   DISALLOW_COPY_AND_ASSIGN(InfoBarView);
    138 };
    139 
    140 #endif  // CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_VIEW_H_
    141