chrome/browser/extensions/install_observer.h

// Copyright 2013 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_INSTALL_OBSERVER_H_
#define CHROME_BROWSER_EXTENSIONS_INSTALL_OBSERVER_H_

#include <string>

#include "ui/gfx/image/image_skia.h"

namespace extensions {

class Extension;

class InstallObserver {
 public:
  struct ExtensionInstallParams {
    ExtensionInstallParams(
        std::string extension_id,
        std::string extension_name,
        gfx::ImageSkia installing_icon,
        bool is_app,
        bool is_platform_app);

    std::string extension_id;
    std::string extension_name;
    gfx::ImageSkia installing_icon;
    bool is_app;
    bool is_platform_app;
    bool is_ephemeral;
  };

  // Called at the beginning of the complete installation process, i.e., this
  // is called before the extension download begins.
  virtual void OnBeginExtensionInstall(const ExtensionInstallParams& params);

  // Called whenever the extension download is updated.
  // Note: Some extensions have multiple modules, so the percent included here
  // is a simple calculation of:
  // (finished_files * 100 + current_file_progress) / (total files * 100).
  virtual void OnDownloadProgress(const std::string& extension_id,
                                  int percent_downloaded);

  // Called if the extension fails to install.
  virtual void OnInstallFailure(const std::string& extension_id);

  // Called if the installation succeeds.
  virtual void OnExtensionInstalled(const Extension* extension);

  // Called when an extension is [Loaded, Unloaded, Uninstalled] or an app is
  // installed to the app list. These are simply forwarded from the
  // chrome::NOTIFICATIONs.
  virtual void OnExtensionLoaded(const Extension* extension);
  virtual void OnExtensionUnloaded(const Extension* extension);
  virtual void OnExtensionUninstalled(const Extension* extension);
  virtual void OnAppInstalledToAppList(const std::string& extension_id);

  // Called when the app list is reordered.
  virtual void OnAppsReordered();

  // Notifies observers that the observed object is going away.
  virtual void OnShutdown();

 protected:
  virtual ~InstallObserver() {}
};

}  // namespace extensions

#endif  // CHROME_BROWSER_EXTENSIONS_INSTALL_OBSERVER_H_