chrome/browser/extensions/extension_uninstall_dialog.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_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_
   6 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "ui/gfx/image/image_skia.h"
  12 #include "ui/gfx/native_widget_types.h"
  13
  14 class Profile;
  15
  16 namespace base {
  17 class MessageLoop;
  18 }
  19
  20 namespace gfx {
  21 class Image;
  22 }
  23
  24 namespace extensions {
  25 class Extension;
  26
  27 class ExtensionUninstallDialog
  28     : public base::SupportsWeakPtr<ExtensionUninstallDialog> {
  29  public:
  30   class Delegate {
  31    public:
  32     // We call this method to signal that the uninstallation should continue.
  33     virtual void ExtensionUninstallAccepted() = 0;
  34
  35     // We call this method to signal that the uninstallation should stop.
  36     virtual void ExtensionUninstallCanceled() = 0;
  37
  38    protected:
  39     virtual ~Delegate() {}
  40   };
  41
  42   // Creates a platform specific implementation of ExtensionUninstallDialog. The
  43   // dialog will be modal to |parent|, or a non-modal dialog if |parent| is
  44   // NULL.
  45   static ExtensionUninstallDialog* Create(Profile* profile,
  46                                           gfx::NativeWindow parent,
  47                                           Delegate* delegate);
  48
  49   virtual ~ExtensionUninstallDialog();
  50
  51   // This is called to verify whether the uninstallation should proceed.
  52   // Starts the process of showing a confirmation UI, which is split into two.
  53   // 1) Set off a 'load icon' task.
  54   // 2) Handle the load icon response and show the UI (OnImageLoaded).
  55   void ConfirmUninstall(const Extension* extension);
  56
  57   // This shows the same dialog as above, except it also shows which extension
  58   // triggered the dialog by calling chrome.management.uninstall API.
  59   void ConfirmProgrammaticUninstall(const Extension* extension,
  60                                     const Extension* triggering_extension);
  61
  62   std::string GetHeadingText();
  63
  64  protected:
  65   // Constructor used by the derived classes.
  66   ExtensionUninstallDialog(Profile* profile,
  67                            gfx::NativeWindow parent,
  68                            Delegate* delegate);
  69
  70   // TODO(sashab): Remove protected members: crbug.com/397395
  71   Profile* const profile_;
  72
  73   // TODO(sashab): Investigate lifetime issue of this window variable:
  74   // crbug.com/397396
  75   gfx::NativeWindow parent_;
  76
  77   // The delegate we will call Accepted/Canceled on after confirmation dialog.
  78   Delegate* delegate_;
  79
  80   // The extension we are showing the dialog for.
  81   const Extension* extension_;
  82
  83   // The extension triggering the dialog if the dialog was shown by
  84   // chrome.management.uninstall.
  85   const Extension* triggering_extension_;
  86
  87   // The extensions icon.
  88   gfx::ImageSkia icon_;
  89
  90  private:
  91   // Sets the icon that will be used in the dialog. If |icon| contains an empty
  92   // image, then we use a default icon instead.
  93   void SetIcon(const gfx::Image& image);
  94
  95   void OnImageLoaded(const std::string& extension_id, const gfx::Image& image);
  96
  97   // Displays the prompt. This should only be called after loading the icon.
  98   // The implementations of this method are platform-specific.
  99   virtual void Show() = 0;
 100
 101   base::MessageLoop* ui_loop_;
 102
 103   DISALLOW_COPY_AND_ASSIGN(ExtensionUninstallDialog);
 104 };
 105
 106 }  // namespace extensions
 107
 108 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_