Allow drag-and-drop of zipped extensions on chrome://extensions

chrome/browser/extensions/zipfile_installer.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_ZIPFILE_INSTALLER_H_
+#define CHROME_BROWSER_EXTENSIONS_ZIPFILE_INSTALLER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/files/file_path.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "content/public/browser/utility_process_host_client.h"
+
+class ExtensionService;
+
+namespace IPC {
+class Message;
+}
+
+namespace extensions {
+
+class ZipFileInstallerClient
+    : public base::RefCountedThreadSafe<ZipFileInstallerClient> {
+ public:
+  // temp_dir - A temporary directory containing the unzipped contents.
+  virtual void OnUnzipSuccess(const base::FilePath& temp_dir) = 0;
+  virtual void OnUnzipFailure(const std::string& error) = 0;
+
+ protected:
+  friend class base::RefCountedThreadSafe<ZipFileInstallerClient>;
+
+  virtual ~ZipFileInstallerClient() {}
+};
+
+// ZipFileInstaller unzips an extension that is zipped up via a utility process.
+// The contents are then loaded via UnpackedInstaller.
+class ZipFileInstaller : public content::UtilityProcessHostClient {
+ public:
+  static scoped_refptr<ZipFileInstaller> Create(
+      ExtensionService* extension_service,
+      ZipFileInstallerClient* client);
+
+  void LoadFromZipFile(const base::FilePath& path);
+
+  void set_be_noisy_on_failure(bool value) { be_noisy_on_failure_ = value; }
+
+  // UtilityProcessHostClient
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+ private:
+  explicit ZipFileInstaller(ExtensionService* extension_service,
+                            ZipFileInstallerClient* client);
+  virtual ~ZipFileInstaller();
+
+  void PrepareTempDir();
+  void StartWorkOnIOThread(const base::FilePath& temp_dir);
+  void ReportSuccessOnUIThread(const base::FilePath& unzipped_path);
+  void ReportErrorOnUIThread(const std::string& error);
+
+  void OnUnzipSucceeded(const base::FilePath& unzipped_path);
+  void OnUnzipFailed(const std::string& error);
+
+  bool be_noisy_on_failure_;
+  base::WeakPtr<ExtensionService> extension_service_;
+  base::FilePath zip_path_;
+
+  scoped_refptr<ZipFileInstallerClient> client_;
+
+  DISALLOW_COPY_AND_ASSIGN(ZipFileInstaller);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_ZIPFILE_INSTALLER_H_