src/components/password_manager/core/browser/password_store_consumer.h

   1 // Copyright 2014 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 COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_STORE_CONSUMER_H_
   6 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_STORE_CONSUMER_H_
   7
   8 #include <vector>
   9
  10 #include "base/task/cancelable_task_tracker.h"
  11
  12 namespace autofill {
  13 struct PasswordForm;
  14 }
  15
  16 // Reads from the PasswordStore are done asynchronously on a separate
  17 // thread. PasswordStoreConsumer provides the virtual callback method, which is
  18 // guaranteed to be executed on this (the UI) thread. It also provides the
  19 // base::CancelableTaskTracker member, which cancels any outstanding
  20 // tasks upon destruction.
  21 class PasswordStoreConsumer {
  22  public:
  23   PasswordStoreConsumer();
  24
  25   // Called when the request is finished. If there are no results, it is called
  26   // with an empty vector.
  27   // Note: The implementation owns all PasswordForms in the vector.
  28   virtual void OnGetPasswordStoreResults(
  29       const std::vector<autofill::PasswordForm*>& results) = 0;
  30
  31   // The base::CancelableTaskTracker can be used for cancelling the
  32   // tasks associated with the consumer.
  33   base::CancelableTaskTracker* cancelable_task_tracker() {
  34     return &cancelable_task_tracker_;
  35   }
  36
  37   base::WeakPtr<PasswordStoreConsumer> GetWeakPtr() {
  38     return weak_ptr_factory_.GetWeakPtr();
  39   }
  40
  41  protected:
  42   virtual ~PasswordStoreConsumer();
  43
  44  private:
  45   base::CancelableTaskTracker cancelable_task_tracker_;
  46   base::WeakPtrFactory<PasswordStoreConsumer> weak_ptr_factory_;
  47 };
  48
  49 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_STORE_CONSUMER_H_