1 // Copyright 2013 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.
5 #include "ios/public/consumer/base/supports_user_data.h"
7 #include "base/memory/scoped_ptr.h"
8 #include "base/supports_user_data.h"
12 // Class that wraps a ios::SupportsUserData::Data object in a
13 // base::SupportsUserData::Data object. The wrapper object takes ownership of
14 // the wrapped object and will delete it on destruction.
15 class DataAdaptor : public base::SupportsUserData::Data {
17 DataAdaptor(SupportsUserData::Data* data);
18 virtual ~DataAdaptor();
20 SupportsUserData::Data* data() { return data_.get(); }
23 scoped_ptr<SupportsUserData::Data> data_;
26 DataAdaptor::DataAdaptor(SupportsUserData::Data* data)
29 DataAdaptor::~DataAdaptor() {}
31 // Class that subclasses base::SupportsUserData in order to enable it to
32 // support ios::SupportsUserData::Data objects. It accomplishes this by
33 // wrapping these objects internally in ios::DataAdaptor objects.
34 class SupportsUserDataInternal : public base::SupportsUserData {
36 // Returns the data that is associated with |key|, or NULL if there is no
37 // such associated data.
38 ios::SupportsUserData::Data* GetIOSUserData(const void* key);
40 // Associates |data| with |key|. Takes ownership of |data| and will delete it
41 // on either a call to |RemoveUserData(key)| or otherwise on destruction.
42 void SetIOSUserData(const void* key, ios::SupportsUserData::Data* data);
45 SupportsUserDataInternal() {}
46 virtual ~SupportsUserDataInternal() {}
48 friend class ios::SupportsUserData;
51 ios::SupportsUserData::Data* SupportsUserDataInternal::GetIOSUserData(
53 DataAdaptor* adaptor = static_cast<DataAdaptor*>(
54 base::SupportsUserData::GetUserData(key));
57 return adaptor->data();
60 void SupportsUserDataInternal::SetIOSUserData(
61 const void* key, ios::SupportsUserData::Data* data) {
62 base::SupportsUserData::SetUserData(key, new DataAdaptor(data));
65 // ios::SupportsUserData implementation.
66 SupportsUserData::SupportsUserData()
67 : internal_helper_(new SupportsUserDataInternal()) {
70 SupportsUserData::~SupportsUserData() {
71 delete internal_helper_;
74 SupportsUserData::Data* SupportsUserData::GetUserData(const void* key) const {
75 return internal_helper_->GetIOSUserData(key);
78 void SupportsUserData::SetUserData(const void* key, Data* data) {
79 internal_helper_->SetIOSUserData(key, data);
82 void SupportsUserData::RemoveUserData(const void* key) {
83 internal_helper_->RemoveUserData(key);
86 void SupportsUserData::DetachUserDataThread() {
87 internal_helper_->DetachUserDataThread();