Re-land the password store work from bug 8205, with changes that should fix b...

chrome/browser/password_manager/password_store_default.h

+// Copyright (c) 2006-2009 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_PASSWORD_MANAGER_PASSWORD_STORE_DEFAULT
+#define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_DEFAULT
+
+#include <map>
+
+#include "base/file_path.h"
+#include "base/ref_counted.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/password_manager/password_store.h"
+#include "chrome/browser/webdata/web_data_service.h"
+
+class Task;
+
+// Simple password store implementation that delegates everything to
+// the WebDatabase.
+// TODO(stuartmorgan): This is a temprorary shim for Windows from the new
+// PasswordStore interface to the old model of storing passwords in the
+// WebDatabase. This should be replaced by a self-contained Windows
+// implementation once PasswordStore is completed.
+class PasswordStoreDefault : public PasswordStore,
+                             public WebDataServiceConsumer {
+ public:
+  explicit PasswordStoreDefault(WebDataService* web_data_service);
+  virtual ~PasswordStoreDefault() {}
+
+ protected:
+  // Implements PasswordStore interface.
+  void AddLoginImpl(const PasswordForm& form);
+  void UpdateLoginImpl(const PasswordForm& form);
+  void RemoveLoginImpl(const PasswordForm& form);
+  void GetLoginsImpl(GetLoginsRequest* request);
+
+  // Called when a WebDataService method finishes.
+  // Overrides must call RemovePendingWebDataServiceRequest.
+  virtual void OnWebDataServiceRequestDone(WebDataService::Handle h,
+                                           const WDTypedResult* result);
+
+  // Keeps track of a pending WebDataService request, and the original
+  // GetLogins request it is associated with.
+  // Increases the reference count of |this|, so must be balanced with a
+  // call to RemovePendingWebDataServiceRequest.
+  void AddPendingWebDataServiceRequest(WebDataService::Handle handle,
+                                       GetLoginsRequest* request);
+  // Removes a WebDataService request from the list of pending requests,
+  // and reduces the reference count of |this|.
+  void RemovePendingWebDataServiceRequest(WebDataService::Handle handle);
+  // Returns the GetLoginsRequest associated with |handle|.
+  GetLoginsRequest* GetLoginsRequestForWebDataServiceRequest(
+      WebDataService::Handle handle);
+
+  scoped_refptr<WebDataService> web_data_service_;
+
+ private:
+  // Methods in this class call async WebDataService methods.  This mapping
+  // remembers which WebDataService request corresponds to which PasswordStore
+  // request.
+  typedef std::map<WebDataService::Handle, GetLoginsRequest*> PendingRequestMap;
+  PendingRequestMap pending_requests_;
+
+  DISALLOW_COPY_AND_ASSIGN(PasswordStoreDefault);
+};
+
+#endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_DEFAULT