chrome/browser/ui/global_error/global_error.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_GLOBAL_ERROR_GLOBAL_ERROR_H_
   6 #define CHROME_BROWSER_UI_GLOBAL_ERROR_GLOBAL_ERROR_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/strings/string16.h"
  13
  14 class Browser;
  15 class GlobalErrorBubbleViewBase;
  16
  17 namespace gfx {
  18 class Image;
  19 }
  20
  21 // This object describes a single global error.
  22 class GlobalError {
  23  public:
  24   enum Severity {
  25     SEVERITY_LOW,
  26     SEVERITY_MEDIUM,
  27     SEVERITY_HIGH,
  28   };
  29
  30   GlobalError();
  31   virtual ~GlobalError();
  32
  33   // Returns the error's severity level. If there are multiple errors,
  34   // the error with the highest severity will display in the menu. If not
  35   // overridden, this is based on the badge resource ID.
  36   virtual Severity GetSeverity();
  37
  38   // Returns true if a menu item should be added to the wrench menu.
  39   virtual bool HasMenuItem() = 0;
  40   // Returns the command ID for the menu item.
  41   virtual int MenuItemCommandID() = 0;
  42   // Returns the label for the menu item.
  43   virtual base::string16 MenuItemLabel() = 0;
  44   // Returns the resource ID for the menu item icon.
  45   int MenuItemIconResourceID();
  46   // Called when the user clicks on the menu item.
  47   virtual void ExecuteMenuItem(Browser* browser) = 0;
  48
  49   // Returns true if a bubble view should be shown.
  50   virtual bool HasBubbleView() = 0;
  51   // Returns true if the bubble view has been shown.
  52   virtual bool HasShownBubbleView() = 0;
  53   // Called to show the bubble view.
  54   virtual void ShowBubbleView(Browser* browser) = 0;
  55   // Returns the bubble view.
  56   virtual GlobalErrorBubbleViewBase* GetBubbleView() = 0;
  57 };
  58
  59 // This object describes a single global error that already comes with support
  60 // for showing a standard Bubble UI. Derived classes just need to supply the
  61 // content to be displayed in the bubble.
  62 class GlobalErrorWithStandardBubble
  63     : public GlobalError,
  64       public base::SupportsWeakPtr<GlobalErrorWithStandardBubble> {
  65  public:
  66   GlobalErrorWithStandardBubble();
  67   virtual ~GlobalErrorWithStandardBubble();
  68
  69   // Returns an icon to use for the bubble view.
  70   virtual gfx::Image GetBubbleViewIcon();
  71   // Returns the title for the bubble view.
  72   virtual base::string16 GetBubbleViewTitle() = 0;
  73   // Returns the messages for the bubble view, one per line. Multiple messages
  74   // are only supported on Views.
  75   // TODO(yoz): Add multi-line support for GTK and Cocoa.
  76   virtual std::vector<base::string16> GetBubbleViewMessages() = 0;
  77   // Returns the accept button label for the bubble view.
  78   virtual base::string16 GetBubbleViewAcceptButtonLabel() = 0;
  79   // Returns the cancel button label for the bubble view. To hide the cancel
  80   // button return an empty string.
  81   virtual base::string16 GetBubbleViewCancelButtonLabel() = 0;
  82   // Called when the bubble view is closed. |browser| is the Browser that the
  83   // bubble view was shown on.
  84   void BubbleViewDidClose(Browser* browser);
  85   // Notifies subclasses that the bubble view is closed. |browser| is the
  86   // Browser that the bubble view was shown on.
  87   virtual void OnBubbleViewDidClose(Browser* browser) = 0;
  88   // Called when the user clicks on the accept button. |browser| is the
  89   // Browser that the bubble view was shown on.
  90   virtual void BubbleViewAcceptButtonPressed(Browser* browser) = 0;
  91   // Called when the user clicks the cancel button. |browser| is the
  92   // Browser that the bubble view was shown on.
  93   virtual void BubbleViewCancelButtonPressed(Browser* browser) = 0;
  94
  95   // GlobalError overrides:
  96   virtual bool HasBubbleView() OVERRIDE;
  97   virtual bool HasShownBubbleView() OVERRIDE;
  98   virtual void ShowBubbleView(Browser* browser) OVERRIDE;
  99   virtual GlobalErrorBubbleViewBase* GetBubbleView() OVERRIDE;
 100
 101  private:
 102   bool has_shown_bubble_view_;
 103   GlobalErrorBubbleViewBase* bubble_view_;
 104
 105   DISALLOW_COPY_AND_ASSIGN(GlobalErrorWithStandardBubble);
 106 };
 107
 108 #endif  // CHROME_BROWSER_UI_GLOBAL_ERROR_GLOBAL_ERROR_H_