Resubmit: Refactor external_install_ui

chrome/browser/extensions/external_install_error.h

+// Copyright 2014 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_EXTERNAL_INSTALL_ERROR_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTERNAL_INSTALL_ERROR_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "chrome/browser/extensions/extension_install_prompt.h"
+#include "chrome/browser/extensions/webstore_data_fetcher_delegate.h"
+
+class ExtensionInstallUI;
+class GlobalError;
+class GlobalErrorService;
+
+namespace content {
+class BrowserContext;
+}
+
+namespace extensions {
+class Extension;
+class ExternalInstallManager;
+class WebstoreDataFetcher;
+
+// An error to show the user an extension has been externally installed. The
+// error will automatically fetch data about the extension from the webstore (if
+// possible) and will handle adding itself to the GlobalErrorService when
+// initialized and removing itself from the GlobalErrorService upon
+// destruction.
+class ExternalInstallError : public ExtensionInstallPrompt::Delegate,
+                             public WebstoreDataFetcherDelegate {
+ public:
+  // The possible types of errors to show. A menu alert adds a menu item to the
+  // wrench, which spawns an extension install dialog when clicked. The bubble
+  // alert also adds an item, but spawns a bubble instead (less invasive and
+  // easier to dismiss).
+  enum AlertType {
+    BUBBLE_ALERT,
+    MENU_ALERT
+  };
+
+  ExternalInstallError(content::BrowserContext* browser_context,
+                       const std::string& extension_id,
+                       AlertType error_type,
+                       ExternalInstallManager* manager);
+  virtual ~ExternalInstallError();
+
+  // ExtensionInstallPrompt::Delegate implementation.
+  virtual void InstallUIProceed() OVERRIDE;
+  virtual void InstallUIAbort(bool user_initiated) OVERRIDE;
+
+  // Acknowledge the associated external extension.
+  void AcknowledgeExtension();
+
+  // Show the associated dialog. This should only be called once the dialog is
+  // ready.
+  void ShowDialog();
+
+  // Return the associated extension, or NULL.
+  const Extension* GetExtension() const;
+
+  const std::string& extension_id() const { return extension_id_; }
+  AlertType alert_type() const { return alert_type_; }
+
+ private:
+  // WebstoreDataFetcherDelegate implementation.
+  virtual void OnWebstoreRequestFailure() OVERRIDE;
+  virtual void OnWebstoreResponseParseSuccess(
+      scoped_ptr<base::DictionaryValue> webstore_data) OVERRIDE;
+  virtual void OnWebstoreResponseParseFailure(
+      const std::string& error) OVERRIDE;
+
+  // Called when data fetching has completed (either successfully or not).
+  void OnFetchComplete();
+
+  // Called when the dialog has been successfully populated, and is ready to be
+  // shown.
+  void OnDialogReady(const ExtensionInstallPrompt::ShowParams& show_params,
+                     ExtensionInstallPrompt::Delegate* prompt_delegate,
+                     const ExtensionInstallPrompt::Prompt& prompt);
+
+  // The associated BrowserContext.
+  content::BrowserContext* browser_context_;
+
+  // The id of the external extension.
+  std::string extension_id_;
+
+  // The type of alert to show the user.
+  AlertType alert_type_;
+
+  // The owning ExternalInstallManager.
+  ExternalInstallManager* manager_;
+
+  // The associated GlobalErrorService.
+  GlobalErrorService* error_service_;
+
+  // The UI for showing the error.
+  scoped_ptr<ExtensionInstallPrompt> install_ui_;
+  scoped_ptr<ExtensionInstallPrompt::Prompt> prompt_;
+  scoped_ptr<ExtensionInstallPrompt::ShowParams> show_params_;
+
+  // The UI for the given error, which will take the form of either a menu
+  // alert or a bubble alert (depending on the |alert_type_|.
+  scoped_ptr<GlobalError> global_error_;
+
+  // The associated browser. Can be NULL.
+  Browser* browser_;
+
+  // The WebstoreDataFetcher to use in order to populate the error with webstore
+  // information of the extension.
+  scoped_ptr<WebstoreDataFetcher> webstore_data_fetcher_;
+
+  base::WeakPtrFactory<ExternalInstallError> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExternalInstallError);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_INSTALL_ERROR_H_