Install Chrome OS apps to shared location

chrome/browser/extensions/extension_assets_manager_chromeos.h

+// Copyright (c) 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_EXTENSION_ASSETS_MANAGER_CHROMEOS_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_ASSETS_MANAGER_CHROMEOS_H_
+
+#include "base/memory/weak_ptr.h"
+#include "chrome/browser/extensions/extension_assets_manager.h"
+
+template <typename T> struct DefaultSingletonTraits;
+class PrefRegistrySimple;
+
+namespace base {
+class SequencedTaskRunner;
+}
+
+namespace extensions {
+
+// Chrome OS specific implementation assets manager that share default apps
+// between all users on the machine.
+class ExtensionAssetsManagerChromeOS : public ExtensionAssetsManager {
+ public:
+  static ExtensionAssetsManagerChromeOS* GetInstance();
+
+  // Path to shared extensions install dir.
+  static const char kSharedExtensionsDir[];
+
+  // Register shared assets related preferences.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
+
+  // Override from ExtensionAssetsManager.
+  virtual void InstallExtension(const Extension* extension,
+                                const base::FilePath& unpacked_extension_root,
+                                const base::FilePath& local_install_dir,
+                                Profile* profile,
+                                InstallExtensionCallback callback) OVERRIDE;
+  virtual void UninstallExtension(
+      const std::string& id,
+      Profile* profile,
+      const base::FilePath& local_install_dir,
+      const base::FilePath& extension_root) OVERRIDE;
+
+  void SetSharedInstallDirForTesting(const base::FilePath& install_dir);
+
+ private:
+  friend struct DefaultSingletonTraits<ExtensionAssetsManagerChromeOS>;
+
+  ExtensionAssetsManagerChromeOS();
+  virtual ~ExtensionAssetsManagerChromeOS();
+
+  // Should be called on UI thread to get associated file task runner for
+  // the profile.
+  static base::SequencedTaskRunner* GetFileTaskRunner(Profile* profile);
+
+  // Return |true| if |extension| can be installed in shared place for all users
+  // on the device.
+  static bool CanShareAssets(const Extension* extension);
+
+  // Called in UI thread to check if given version of the |extension| already
+  // exists at shared location.
+  static void CheckSharedExtension(
+      base::WeakPtr<ExtensionAssetsManagerChromeOS> object,
+      const Extension* extension,
+      const base::FilePath& unpacked_extension_root,
+      const base::FilePath& local_install_dir,
+      Profile* profile,
+      InstallExtensionCallback callback);
+
+  // Called on task runner thread when version found in shared location.
+  static void SharedExtensionFound(const base::FilePath& shared_version_dir,
+                                   InstallExtensionCallback callback);
+
+  // Called on task runner thread when there is no version in shared location.
+  void SharedExtensionNotFound(
+      const Extension* extension,
+      const base::FilePath& unpacked_extension_root,
+      const base::FilePath& local_install_dir,
+      Profile* profile,
+      InstallExtensionCallback callback);
+
+  // Called on UI thread to mark that shared version is in use.
+  static void MarkSharedExtensionUsed(
+      const std::string& id,
+      const std::string& version,
+      const base::FilePath& shared_version_dir,
+      Profile* profile);
+
+  // Called on UI thread to mark that shared version is not used.
+  static void MarkSharedExtensionUnused(
+      base::WeakPtr<ExtensionAssetsManagerChromeOS> object,
+      const std::string& id,
+      Profile* profile);
+
+  // Called on task runner thread to remove shared version.
+  void DeleteSharedVersion(const base::FilePath& shared_version_dir);
+
+  // Weak factory for callbacks.
+  base::WeakPtrFactory<ExtensionAssetsManagerChromeOS> weak_ptr_factory_;
+
+  // Shared install dir, set to some temporary dir in tests.
+  base::FilePath shared_install_dir_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionAssetsManagerChromeOS);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_ASSETS_MANAGER_CHROMEOS_H_