Put extension enable logic into a ExtensionEnableFlow.

chrome/browser/ui/webui/ntp/app_launcher_handler.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_
 
+#include <set>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/public/pref_change_registrar.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/extension_uninstall_dialog.h"
 #include "chrome/browser/favicon/favicon_service.h"
+#include "chrome/browser/ui/extensions/extension_enable_flow_delegate.h"
 #include "chrome/common/cancelable_task_tracker.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_message_handler.h"
 #include "sync/api/string_ordinal.h"
 
+class ExtensionEnableFlow;
 class ExtensionService;
 class PrefChangeRegistrar;
 class PrefServiceSyncable;
 class Profile;
 
 namespace extensions {
 class AppNotification;
 }
 
 // The handler for Javascript messages related to the "apps" view.
 class AppLauncherHandler : public content::WebUIMessageHandler,
                            public ExtensionUninstallDialog::Delegate,
-                           public ExtensionInstallPrompt::Delegate,
+                           public ExtensionEnableFlowDelegate,
                            public content::NotificationObserver {
  public:
   explicit AppLauncherHandler(ExtensionService* extension_service);
   virtual ~AppLauncherHandler();
 
   // Populate a dictionary with the information from an extension.
   static void CreateAppInfo(
       const extensions::Extension* extension,
       const extensions::AppNotification* notification,
       ExtensionService* service,
@@ skipping 89 matching lines @@
                                    std::string escaped_url,
                                    extension_misc::AppLaunchBucket bucket);
 
   // Prompts the user to re-enable the app for |extension_id|.
   void PromptToEnableApp(const std::string& extension_id);
 
   // ExtensionUninstallDialog::Delegate:
   virtual void ExtensionUninstallAccepted() OVERRIDE;
   virtual void ExtensionUninstallCanceled() OVERRIDE;
 
-  // ExtensionInstallPrompt::Delegate:
-  virtual void InstallUIProceed() OVERRIDE;
-  virtual void InstallUIAbort(bool user_initiated) OVERRIDE;
+  // ExtensionEnableFlowDelegate:
+  virtual ExtensionInstallPrompt* CreateExtensionInstallPrompt() OVERRIDE;
+  virtual void ExtensionEnableFlowFinished() OVERRIDE;
+  virtual void ExtensionEnableFlowAborted(bool user_initiated) OVERRIDE;
 
   // Returns the ExtensionUninstallDialog object for this class, creating it if
   // needed.
   ExtensionUninstallDialog* GetExtensionUninstallDialog();
 
-  // Returns the ExtensionInstallPrompt object for this class, creating it if
-  // needed.
-  ExtensionInstallPrompt* GetExtensionInstallPrompt();
-
   // Continuation for installing a bookmark app after favicon lookup.
   void OnFaviconForApp(scoped_ptr<AppInstallInfo> install_info,
                        const history::FaviconImageResult& image_result);
 
   // Sends |highlight_app_id_| to the js.
   void SetAppToBeHighlighted();
 
   void OnPreferenceChanged();
 
   // The apps are represented in the extensions model, which
   // outlives us since it's owned by our containing profile.
   ExtensionService* const extension_service_;
 
   // We monitor changes to the extension system so that we can reload the apps
   // when necessary.
   content::NotificationRegistrar registrar_;
 
   // Monitor extension preference changes so that the Web UI can be notified.
   PrefChangeRegistrar pref_change_registrar_;
 
   // Used to show confirmation UI for uninstalling extensions in incognito mode.
   scoped_ptr<ExtensionUninstallDialog> extension_uninstall_dialog_;
 
-  // Used to show confirmation UI for enabling extensions in incognito mode.
-  scoped_ptr<ExtensionInstallPrompt> extension_install_ui_;
+  // Used to show confirmation UI for enabling extensions.
+  scoped_ptr<ExtensionEnableFlow> extension_enable_flow_;
 
   // The ids of apps to show on the NTP.
   std::set<std::string> visible_apps_;
 
-  // The id of the extension we are prompting the user about.
+  // The id of the extension we are prompting the user about (either enable or
+  // uninstall).
   std::string extension_id_prompting_;
 
   // When true, we ignore changes to the underlying data rather than immediately
   // refreshing. This is useful when making many batch updates to avoid flicker.
   bool ignore_changes_;
 
   // When true, we have attempted to install a bookmark app, and are still
   // waiting to hear about success or failure from the extensions system.
   bool attempted_bookmark_app_install_;
 
   // True if we have executed HandleGetApps() at least once.
   bool has_loaded_apps_;
 
   // The ID of the app to be highlighted on the NTP (i.e. shown on the page
   // and pulsed). This is done for new installs. The actual higlighting occurs
   // when the app is added to the page (via getAppsCallback or appAdded).
   std::string highlight_app_id_;
 
   // Used for favicon loading tasks.
   CancelableTaskTracker cancelable_task_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(AppLauncherHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_APP_LAUNCHER_HANDLER_H_