Index: storage/browser/blob/blob_data_item.h |
diff --git a/storage/browser/blob/blob_data_item.h b/storage/browser/blob/blob_data_item.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..099415b6e14079698754a61e477d7f426a183e92 |
--- /dev/null |
+++ b/storage/browser/blob/blob_data_item.h |
@@ -0,0 +1,63 @@ |
+// Copyright (c) 2015 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 STORAGE_BROWSER_BLOB_BLOB_DATA_ITEM_H_ |
+#define STORAGE_BROWSER_BLOB_BLOB_DATA_ITEM_H_ |
+ |
+#include "base/basictypes.h" |
+#include "base/memory/ref_counted.h" |
+#include "storage/browser/blob/shareable_file_reference.h" |
+#include "storage/browser/storage_browser_export.h" |
+#include "storage/common/data_element.h" |
+ |
+namespace storage { |
+class BlobDataBuilder; |
+class BlobStorageContext; |
+ |
+// Ref counted blob item. This class owns the backing data of the blob item. |
+// The backing data is immutable, and cannot change after creation. |
+// The purpose of this class is to allow the resource to stick around in the |
+// snapshot even after the resource was swapped in the blob (either to disk or |
+// to memory) by the BlobStorageContext. |
+class STORAGE_EXPORT BlobDataItem : public base::RefCounted<BlobDataItem> { |
+ public: |
+ storage::DataElement::Type type() const { return item_->type(); } |
+ const char* bytes() const { return item_->bytes(); } |
+ const base::FilePath& path() const { return item_->path(); } |
+ const GURL& filesystem_url() const { return item_->filesystem_url(); } |
+ const std::string& blob_uuid() const { return item_->blob_uuid(); } |
+ uint64 offset() const { return item_->offset(); } |
+ uint64 length() const { return item_->length(); } |
+ const base::Time& expected_modification_time() const { |
+ return item_->expected_modification_time(); |
+ } |
+ const DataElement& data_element() const { return *item_; } |
+ const DataElement* data_element_ptr() const { return item_.get(); } |
+ |
+ private: |
+ friend class BlobDataBuilder; |
+ friend class BlobStorageContext; |
+ friend class base::RefCounted<BlobDataItem>; |
+ BlobDataItem(scoped_ptr<DataElement> item); |
+ BlobDataItem(scoped_ptr<DataElement> item, |
+ scoped_refptr<ShareableFileReference> file_handle); |
+ virtual ~BlobDataItem(); |
+ |
+ scoped_ptr<storage::DataElement> item_; |
+ scoped_refptr<ShareableFileReference> file_handle_; |
+}; |
+ |
+#if defined(UNIT_TEST) |
+inline bool operator==(const BlobDataItem& a, const BlobDataItem& b) { |
+ return a.data_element() == b.data_element(); |
+} |
+ |
+inline bool operator!=(const BlobDataItem& a, const BlobDataItem& b) { |
+ return !(a == b); |
+} |
+#endif // defined(UNIT_TEST) |
+ |
+} // namespace storage |
+ |
+#endif // STORAGE_BROWSER_BLOB_BLOB_DATA_ITEM_H_ |