src/chrome/browser/password_manager/password_store_consumer.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_CONSUMER_H_
   6 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_CONSUMER_H_
   7
   8 #include "chrome/common/cancelable_task_tracker.h"
   9
  10 namespace autofill {
  11 struct PasswordForm;
  12 }
  13
  14 // Reads from the PasswordStore are done asynchronously on a separate
  15 // thread. PasswordStoreConsumer provides the virtual callback method, which is
  16 // guaranteed to be executed on this (the UI) thread. It also provides the
  17 // CancelableTaskTracker member, which cancels any outstanding tasks upon
  18 // destruction.
  19 class PasswordStoreConsumer {
  20  public:
  21   PasswordStoreConsumer();
  22
  23   // Called when the request is finished. If there are no results, it is called
  24   // with an empty vector.
  25   // Note: The implementation owns all PasswordForms in the vector.
  26   virtual void OnGetPasswordStoreResults(
  27       const std::vector<autofill::PasswordForm*>& results) = 0;
  28
  29   // The CancelableTaskTracker can be used for cancelling the tasks associated
  30   // with the consumer.
  31   CancelableTaskTracker* cancelable_task_tracker() {
  32     return &cancelable_task_tracker_;
  33   }
  34
  35   base::WeakPtr<PasswordStoreConsumer> GetWeakPtr() {
  36     return weak_ptr_factory_.GetWeakPtr();
  37   }
  38
  39  protected:
  40   virtual ~PasswordStoreConsumer();
  41
  42  private:
  43   CancelableTaskTracker cancelable_task_tracker_;
  44   base::WeakPtrFactory<PasswordStoreConsumer> weak_ptr_factory_;
  45 };
  46
  47 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_STORE_CONSUMER_H_