Support for file listing in privet local filesystem

chrome/browser/local_discovery/storage/privet_filesystem_operations.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_LOCAL_DISCOVERY_STORAGE_PRIVET_FILESYSTEM_OPERATIONS_H_
+#define CHROME_BROWSER_LOCAL_DISCOVERY_STORAGE_PRIVET_FILESYSTEM_OPERATIONS_H_
+
+#include "chrome/browser/local_discovery/privet_device_resolver.h"
+#include "chrome/browser/local_discovery/privet_http.h"
+#include "chrome/browser/local_discovery/privet_http_asynchronous_factory.h"
+#include "chrome/browser/local_discovery/service_discovery_shared_client.h"
+#include "chrome/browser/local_discovery/storage/path_util.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/browser_thread.h"
+#include "net/url_request/url_request_context.h"
+#include "webkit/browser/fileapi/async_file_util.h"
+
+namespace local_discovery {
+
+class PrivetFileSystemAsyncOperation {
+ public:
+  virtual ~PrivetFileSystemAsyncOperation() {}
+
+  virtual void Start() = 0;
+};
+
+class PrivetFileSystemAsyncOperationContainer {
+ public:
+  virtual ~PrivetFileSystemAsyncOperationContainer() {}
+
+  virtual void RemoveOperation(
+      PrivetFileSystemAsyncOperation* operation) = 0;
+  virtual void RemoveAllOperations() = 0;
+};
+
+class PrivetFileSystemAsyncOperationUtil {
+ public:
+  class Delegate {
+   public:
+    Delegate() {}
+    virtual ~Delegate() {}
+
+    // |http_client| is the client for the resolved service, or NULL if
+    // resolution failed. |path| is the canonical path within the privet
+    // service.
+    virtual void PrivetFileSystemResolved(
+        PrivetHTTPClient* http_client,
+        const std::string& path) = 0;
+  };
+
+  // full_path
+  PrivetFileSystemAsyncOperationUtil(
+      const base::FilePath& full_path,
+      net::URLRequestContextGetter* request_context,
+      Delegate* delegate);
+  ~PrivetFileSystemAsyncOperationUtil();
+
+  void Start();
+
+ private:
+  void OnGotDeviceDescription(bool success,
+                              const DeviceDescription& device_description);
+  void OnGotPrivetHTTP(scoped_ptr<PrivetHTTPClient> privet_http_client);
+
+  ParsedPrivetPath parsed_path_;
+  scoped_refptr<net::URLRequestContextGetter> request_context_;
+  Delegate* delegate_;
+
+  scoped_refptr<ServiceDiscoverySharedClient> service_discovery_client_;
+  scoped_ptr<PrivetDeviceResolver> privet_device_resolver_;
+  scoped_ptr<PrivetHTTPAsynchronousFactory> privet_async_factory_;
+  scoped_ptr<PrivetHTTPResolution> privet_http_resolution_;
+  scoped_ptr<PrivetHTTPClient> privet_client_;
+};
+
+class PrivetFileSystemListOperation
+    : public PrivetFileSystemAsyncOperationUtil::Delegate,
+      public local_discovery::PrivetFileSystemAsyncOperation {
+ public:
+  PrivetFileSystemListOperation(
+      const base::FilePath& full_path,
+      content::BrowserContext* browser_context,
+      PrivetFileSystemAsyncOperationContainer* async_file_util,
+      const fileapi::AsyncFileUtil::ReadDirectoryCallback& callback);
+  virtual ~PrivetFileSystemListOperation();
+
+  virtual void Start() OVERRIDE;
+
+  virtual void PrivetFileSystemResolved(
+        PrivetHTTPClient* http_client,
+        const std::string& path) OVERRIDE;
+
+ private:
+  void StartOnUIThread();
+  void OnStorageListResult(const base::DictionaryValue* value);
+  void TriggerCallback(base::File::Error result,
+                       const fileapi::AsyncFileUtil::EntryList& file_list,
+                       bool has_more);
+
+  void TriggerCallbackOnIOThread(
+      base::File::Error result,
+      fileapi::AsyncFileUtil::EntryList file_list,
+      bool has_more);
+
+  base::FilePath full_path_;
+  content::BrowserContext* browser_context_;
+  scoped_ptr<PrivetFileSystemAsyncOperationUtil> core_;
+  PrivetFileSystemAsyncOperationContainer* async_file_util_;
+  fileapi::AsyncFileUtil::ReadDirectoryCallback callback_;
+
+  scoped_ptr<PrivetJSONOperation> list_operation_;
+  base::WeakPtrFactory<PrivetFileSystemListOperation> weak_factory_;
+};
+
+}  // namespace local_discovery
+
+#endif  // CHROME_BROWSER_LOCAL_DISCOVERY_STORAGE_PRIVET_FILESYSTEM_OPERATIONS_H_