| /* |
| * 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" |
| |
| 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 expectedModificationTime) = 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 expectedModificationTime) = 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&) { } |
| |
| // Caller takes ownership of the Builder. The blob is finalized (and sent to |
| // the browser) on calling build() on the Builder object. |
| virtual Builder* createBuilder(const WebString& uuid, const WebString& contentType) { BLINK_ASSERT_NOT_REACHED(); return nullptr; } |
| |
| 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&) { } |
| |
| // Registers a stream URL referring to a stream with the specified media |
| // type. |
| virtual void registerStreamURL(const WebURL&, const WebString&) { BLINK_ASSERT_NOT_REACHED(); } |
| |
| // Registers a stream URL referring to the stream identified by the |
| // specified srcURL. |
| virtual void registerStreamURL(const WebURL&, const WebURL& srcURL) { BLINK_ASSERT_NOT_REACHED(); } |
| |
| // Add data to the stream referred by the URL. |
| virtual void addDataToStream(const WebURL&, const char* data, size_t length) { BLINK_ASSERT_NOT_REACHED(); } |
| |
| // Flush contents buffered in the stream to the corresponding reader. |
| virtual void flushStream(const WebURL&) { BLINK_ASSERT_NOT_REACHED(); } |
| |
| // Tell the registry that construction of this stream has completed |
| // successfully and so it won't receive any more data. |
| virtual void finalizeStream(const WebURL&) { BLINK_ASSERT_NOT_REACHED(); } |
| |
| // Tell the registry that construction of this stream has been aborted and |
| // so it won't receive any more data. |
| virtual void abortStream(const WebURL&) { BLINK_ASSERT_NOT_REACHED(); } |
| |
| // Unregisters a stream referred by the URL. |
| virtual void unregisterStreamURL(const WebURL&) { BLINK_ASSERT_NOT_REACHED(); } |
| }; |
| |
| } // namespace blink |
| |
| #endif // WebBlobRegistry_h |