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 namespace password_manager {
  17
  18 // Reads from the PasswordStore are done asynchronously on a separate
  19 // thread. PasswordStoreConsumer provides the virtual callback method, which is
  20 // guaranteed to be executed on this (the UI) thread. It also provides the
  21 // base::CancelableTaskTracker member, which cancels any outstanding
  22 // tasks upon destruction.
  23 class PasswordStoreConsumer {
  24  public:
  25   PasswordStoreConsumer();
  26
  27   // Called when the request is finished. If there are no results, it is called
  28   // with an empty vector.
  29   // Note: The implementation owns all PasswordForms in the vector.
  30   virtual void OnGetPasswordStoreResults(
  31       const std::vector<autofill::PasswordForm*>& results) = 0;
  32
  33   // The base::CancelableTaskTracker can be used for cancelling the
  34   // tasks associated with the consumer.
  35   base::CancelableTaskTracker* cancelable_task_tracker() {
  36     return &cancelable_task_tracker_;
  37   }
  38
  39   base::WeakPtr<PasswordStoreConsumer> GetWeakPtr() {
  40     return weak_ptr_factory_.GetWeakPtr();
  41   }
  42
  43  protected:
  44   virtual ~PasswordStoreConsumer();
  45
  46  private:
  47   base::CancelableTaskTracker cancelable_task_tracker_;
  48   base::WeakPtrFactory<PasswordStoreConsumer> weak_ptr_factory_;
  49 };
  50
  51 }  // namespace password_manager
  52
  53 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_STORE_CONSUMER_H_