Move application creation and extension install prompt showing off Browser and onto ExtensionTabHel…

chrome/browser/extensions/extension_tab_helper.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_EXTENSIONS_EXTENSION_TAB_HELPER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "chrome/browser/extensions/active_tab_permission_manager.h"
 #include "chrome/browser/extensions/app_notify_channel_setup.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #include "chrome/browser/extensions/webstore_inline_installer.h"
 #include "chrome/common/web_apps.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
-class ExtensionTabHelperDelegate;
 class TabContents;
 struct WebApplicationInfo;
 
 namespace content {
 struct LoadCommittedDetails;
 }
 
 namespace extensions {
 class Extension;
 class LocationBarController;
 class ScriptBadgeController;
 class ScriptExecutor;
 }
 
 // Per-tab extension helper. Also handles non-extension apps.
 class ExtensionTabHelper
     : public content::WebContentsObserver,
       public ExtensionFunctionDispatcher::Delegate,
       public ImageLoadingTracker::Observer,
       public WebstoreInlineInstaller::Delegate,
       public AppNotifyChannelSetup::Delegate,
-      public base::SupportsWeakPtr<ExtensionTabHelper> {
+      public base::SupportsWeakPtr<ExtensionTabHelper>,
+      public content::NotificationObserver {
  public:
+  // Different types of action when web app info is available.
+  // OnDidGetApplicationInfo uses this to dispatch calls.
+  enum WebAppAction {
+    NONE,             // No action at all.
+    CREATE_SHORTCUT,  // Bring up create application shortcut dialog.
+    UPDATE_SHORTCUT   // Update icon for app shortcut.
+  };
+
   explicit ExtensionTabHelper(TabContents* tab_contents);
   virtual ~ExtensionTabHelper();
 
   // Copies the internal state from another ExtensionTabHelper.
   void CopyStateFrom(const ExtensionTabHelper& source);
 
-  ExtensionTabHelperDelegate* delegate() const { return delegate_; }
-  void set_delegate(ExtensionTabHelperDelegate* d) { delegate_ = d; }
+  void CreateApplicationShortcuts();
+  bool CanCreateApplicationShortcuts() const;
 
-  // Requests application info for the specified page. This is an asynchronous
-  // request. The delegate is notified by way of OnDidGetApplicationInfo when
-  // the data is available.
-  void GetApplicationInfo(int32 page_id);
+  void set_pending_web_app_action(WebAppAction action) {
+    pending_web_app_action_ = action;
+  }
 
   // Gets the ID of the tab.
   int tab_id() const;
 
   // Gets the window ID of the tab.
   int window_id() const;
 
   // App extensions ------------------------------------------------------------
 
   // Sets the extension denoting this as an app. If |extension| is non-null this
@@ skipping 96 matching lines @@
   virtual void OnInlineInstallFailure(int install_id,
                                       int return_route_id,
                                       const std::string& error) OVERRIDE;
 
   // AppNotifyChannelSetup::Delegate.
   virtual void AppNotifyChannelSetupComplete(
       const std::string& channel_id,
       const std::string& error,
       const AppNotifyChannelSetup* setup) OVERRIDE;
 
+  // content::NotificationObserver.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  // Requests application info for the specified page. This is an asynchronous
+  // request. The delegate is notified by way of OnDidGetApplicationInfo when
+  // the data is available.
+  void GetApplicationInfo(int32 page_id);
+
   // Data for app extensions ---------------------------------------------------
 
   // Our observers. Declare at top so that it will outlive all other members,
   // since they might add themselves as observers.
   ObserverList<Observer> observers_;
 
-  // Delegate for notifying our owner about stuff. Not owned by us.
-  ExtensionTabHelperDelegate* delegate_;
-
   // If non-null this tab is an app tab and this is the extension the tab was
   // created for.
   const extensions::Extension* extension_app_;
 
   // Icon for extension_app_ (if non-null) or a manually-set icon for
   // non-extension apps.
   SkBitmap extension_app_icon_;
 
   // Process any extension messages coming from the tab.
   ExtensionFunctionDispatcher extension_function_dispatcher_;
 
   // Used for loading extension_app_icon_.
   scoped_ptr<ImageLoadingTracker> extension_app_image_loader_;
 
   // Cached web app info data.
   WebApplicationInfo web_app_info_;
 
+  // Which deferred action to perform when OnDidGetApplicationInfo is notified
+  // from a WebContents.
+  WebAppAction pending_web_app_action_;
+
+  content::NotificationRegistrar registrar_;
+
   TabContents* tab_contents_;
 
   // Either script_executor/location_bar_controller will have values, or
   // script_badge_controller will have a value, depending on whether the action
   // box is turned on.
   scoped_ptr<extensions::ScriptExecutor> script_executor_;
   scoped_ptr<extensions::LocationBarController> location_bar_controller_;
   scoped_refptr<extensions::ScriptBadgeController> script_badge_controller_;
 
   extensions::ActiveTabPermissionManager active_tab_permission_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionTabHelper);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_