| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef WebBlobRegistry_h |
| #define WebBlobRegistry_h |
| |
| #include "WebCommon.h" |
| #include "WebThreadSafeData.h" |
| #include "mojo/public/cpp/system/message_pipe.h" |
| |
| #include <memory> |
| |
| namespace blink { |
| |
| class WebBlobData; |
| class WebString; |
| class WebURL; |
| |
| // Acts as singleton facade for all Blob interactions ouside of blink. This |
| // includes blob: |
| // * creation, |
| // * reference counting, |
| // * publishing, and |
| // * streaming. |
| class WebBlobRegistry { |
| public: |
| // Builder class for creating blobs. The blob is built on calling the |
| // Build() method, where IPCs are sent to the browser. |
| // Preconditions: |
| // * Not meant to be used on multiple threads. |
| // * Must not be kept alive longer than creator WebBlobRegistry (shouldn't |
| // be an issue because of the singleton nature of the WebBlobRegistry) |
| // * Append.* methods are invalid after Build() is called. |
| class Builder { |
| public: |
| virtual ~Builder() {} |
| virtual void AppendData(const WebThreadSafeData&) = 0; |
| virtual void AppendFile(const WebString& path, |
| uint64_t offset, |
| uint64_t length, |
| double expected_modification_time) = 0; |
| // Calling this method ensures the given blob lives for the creation of |
| // the new blob. |
| virtual void AppendBlob(const WebString& uuid, |
| uint64_t offset, |
| uint64_t length) = 0; |
| virtual void AppendFileSystemURL(const WebURL&, |
| uint64_t offset, |
| uint64_t length, |
| double expected_modification_time) = 0; |
| |
| // Builds the blob. All calls to Append* are invalid after calling this |
| // method. |
| virtual void Build() = 0; |
| }; |
| |
| virtual ~WebBlobRegistry() {} |
| |
| // TODO(dmurph): Deprecate and migrate to CreateBuilder |
| virtual void RegisterBlobData(const WebString& uuid, const WebBlobData&) {} |
| |
| // The blob is finalized (and sent to the browser) on calling Build() on the |
| // Builder object. |
| virtual std::unique_ptr<Builder> CreateBuilder( |
| const WebString& uuid, |
| const WebString& content_type) = 0; |
| |
| virtual void AddBlobDataRef(const WebString& uuid) {} |
| virtual void RemoveBlobDataRef(const WebString& uuid) {} |
| virtual void RegisterPublicBlobURL(const WebURL&, const WebString& uuid) {} |
| virtual void RevokePublicBlobURL(const WebURL&) {} |
| }; |
| |
| } // namespace blink |
| |
| #endif // WebBlobRegistry_h |