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/scoped_ptr.h" 11 #include "base/memory/weak_ptr.h" 12 #include "content/public/browser/notification_observer.h" 13 #include "content/public/browser/notification_registrar.h" 14 #include "ui/gfx/image/image_skia.h" 15 16 class Browser; 17 class Profile; 18 19 namespace base { 20 class MessageLoop; 21 } 22 23 namespace gfx { 24 class Image; 25 } 26 27 namespace extensions { 28 class Extension; 29 30 class ExtensionUninstallDialog 31 : public content::NotificationObserver, 32 public base::SupportsWeakPtr<ExtensionUninstallDialog> { 33 public: 34 class Delegate { 35 public: 36 // We call this method to signal that the uninstallation should continue. 37 virtual void ExtensionUninstallAccepted() = 0; 38 39 // We call this method to signal that the uninstallation should stop. 40 virtual void ExtensionUninstallCanceled() = 0; 41 42 protected: ~Delegate()43 virtual ~Delegate() {} 44 }; 45 46 // Creates a platform specific implementation of ExtensionUninstallDialog. 47 // |profile| and |delegate| can never be NULL. 48 // |browser| can be NULL only for Ash when this is used with the applist 49 // window. 50 static ExtensionUninstallDialog* Create(Profile* profile, 51 Browser* browser, 52 Delegate* delegate); 53 54 virtual ~ExtensionUninstallDialog(); 55 56 // This is called to verify whether the uninstallation should proceed. 57 // Starts the process of showing a confirmation UI, which is split into two. 58 // 1) Set off a 'load icon' task. 59 // 2) Handle the load icon response and show the UI (OnImageLoaded). 60 void ConfirmUninstall(const Extension* extension); 61 62 // This shows the same dialog as above, except it also shows which extension 63 // triggered the dialog by calling chrome.management.uninstall API. 64 void ConfirmProgrammaticUninstall(const Extension* extension, 65 const Extension* triggering_extension); 66 67 std::string GetHeadingText(); 68 69 protected: 70 // Constructor used by the derived classes. 71 ExtensionUninstallDialog(Profile* profile, 72 Browser* browser, 73 Delegate* delegate); 74 75 Profile* const profile_; 76 77 Browser* browser_; 78 79 // The delegate we will call Accepted/Canceled on after confirmation dialog. 80 Delegate* delegate_; 81 82 // The extension we are showing the dialog for. 83 const Extension* extension_; 84 85 // The extension triggering the dialog if the dialog was shown by 86 // chrome.management.uninstall. 87 const Extension* triggering_extension_; 88 89 // The extensions icon. 90 gfx::ImageSkia icon_; 91 92 private: 93 // Sets the icon that will be used in the dialog. If |icon| contains an empty 94 // image, then we use a default icon instead. 95 void SetIcon(const gfx::Image& image); 96 97 void OnImageLoaded(const std::string& extension_id, const gfx::Image& image); 98 99 // content::NotificationObserver implementation. 100 virtual void Observe(int type, 101 const content::NotificationSource& source, 102 const content::NotificationDetails& details) OVERRIDE; 103 104 // Displays the prompt. This should only be called after loading the icon. 105 // The implementations of this method are platform-specific. 106 virtual void Show() = 0; 107 108 // Keeps track of whether we're still waiting for an image to load before 109 // we show the dialog. 110 enum State { 111 kImageIsLoading, // Image is loading asynchronously. 112 kDialogIsShowing, // Dialog is shown after image is loaded. 113 kBrowserIsClosing // Browser is closed while image is still loading. 114 }; 115 State state_; 116 117 base::MessageLoop* ui_loop_; 118 119 content::NotificationRegistrar registrar_; 120 121 DISALLOW_COPY_AND_ASSIGN(ExtensionUninstallDialog); 122 }; 123 124 } // namespace extensions 125 126 #endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_ 127