15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/*
25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2010 Google Inc. All rights reserved.
35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *
45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without
55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions are
65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * met:
75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *
85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *     * Redistributions of source code must retain the above copyright
95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer.
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115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * copyright notice, this list of conditions and the following disclaimer
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165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * this software without specific prior written permission.
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185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */
305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)
31e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)#ifndef WebFileWriter_h
32e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)#define WebFileWriter_h
335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)
34e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)#include "WebCommon.h"
35e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)#include "WebString.h"
365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)
3751b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles)namespace blink {
385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)
398abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)class WebString;
40e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)class WebURL;
415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)
42e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)class WebFileWriter {
435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public:
44e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)    virtual ~WebFileWriter() { }
455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)
46e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)    // Only one write or one truncate operation can be in progress at a time.
47e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)    // These functions are asynchronous and will report results through the WebFileWriter's associated WebFileWriterClient.
488abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)    virtual void write(long long position, const WebURL& blobURL) { } // DEPRECATED
498abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)    virtual void write(long long position, const WebString& blobUUID) { }
505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)    virtual void truncate(long long length) = 0;
51e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)
52e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)    // Cancel will attempt to abort a running write or truncate. However, it may not be possible to cancel an in-progress action, or the call may have come in too late. Partial writes are possible.
53e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)    // Do not call cancel when there is no write or truncate in progress.
54e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)    virtual void cancel() = 0;
555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)};
565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)
5751b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles)} // namespace blink
585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)
59e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)#endif
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