Source/web/AsyncFileSystemChromium.cpp

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * 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.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * 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
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#include "config.h"
#include "AsyncFileSystemChromium.h"

#include "AsyncFileWriterChromium.h"
#include "WebFileSystemCallbacksImpl.h"
#include "WebFileWriter.h"
#include "core/platform/AsyncFileSystemCallbacks.h"
#include "core/platform/FileMetadata.h"
#include "public/platform/Platform.h"
#include "public/platform/WebFileInfo.h"
#include "public/platform/WebFileSystem.h"
#include "weborigin/SecurityOrigin.h"
#include "wtf/text/CString.h"
#include "wtf/text/StringBuilder.h"

namespace WebCore {

PassOwnPtr<AsyncFileSystem> AsyncFileSystem::create()
{
    return AsyncFileSystemChromium::create();
}

AsyncFileSystemChromium::AsyncFileSystemChromium()
    : m_webFileSystem(WebKit::Platform::current()->fileSystem())
{
    ASSERT(m_webFileSystem);
}

AsyncFileSystemChromium::~AsyncFileSystemChromium()
{
}

void AsyncFileSystemChromium::move(const KURL& sourcePath, const KURL& destinationPath, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->move(sourcePath, destinationPath, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::copy(const KURL& sourcePath, const KURL& destinationPath, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->copy(sourcePath, destinationPath, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::remove(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->remove(path, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::removeRecursively(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->removeRecursively(path, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::readMetadata(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->readMetadata(path, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::createFile(const KURL& path, bool exclusive, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->createFile(path, exclusive, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::createDirectory(const KURL& path, bool exclusive, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->createDirectory(path, exclusive, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::fileExists(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->fileExists(path, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::directoryExists(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->directoryExists(path, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

void AsyncFileSystemChromium::readDirectory(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->readDirectory(path, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

class FileWriterHelperCallbacks : public WebKit::WebFileSystemCallbacks {
public:
    FileWriterHelperCallbacks(AsyncFileWriterClient* client, const KURL& path, WebKit::WebFileSystem* webFileSystem, PassOwnPtr<WebCore::AsyncFileSystemCallbacks> callbacks)
        : m_client(client)
        , m_path(path)
        , m_webFileSystem(webFileSystem)
        , m_callbacks(callbacks)
    {
    }

    virtual void didSucceed()
    {
        ASSERT_NOT_REACHED();
        delete this;
    }
    virtual void didReadMetadata(const WebKit::WebFileInfo& info)
    {
        ASSERT(m_callbacks);
        if (info.type != WebKit::WebFileInfo::TypeFile || info.length < 0)
            m_callbacks->didFail(WebKit::WebFileErrorInvalidState);
        else {
            OwnPtr<AsyncFileWriterChromium> asyncFileWriterChromium = adoptPtr(new AsyncFileWriterChromium(m_client));
            OwnPtr<WebKit::WebFileWriter> webFileWriter = adoptPtr(m_webFileSystem->createFileWriter(m_path, asyncFileWriterChromium.get()));
            asyncFileWriterChromium->setWebFileWriter(webFileWriter.release());
            m_callbacks->didCreateFileWriter(asyncFileWriterChromium.release(), info.length);
        }
        delete this;
    }
    virtual void didCreateSnapshotFile(const WebKit::WebFileInfo& info)
    {
        ASSERT_NOT_REACHED();
        delete this;
    }
    virtual void didReadDirectory(const WebKit::WebVector<WebKit::WebFileSystemEntry>& entries, bool hasMore)
    {
        ASSERT_NOT_REACHED();
        delete this;
    }
    virtual void didOpenFileSystem(const WebKit::WebString& name, const WebKit::WebURL& rootURL)
    {
        ASSERT_NOT_REACHED();
        delete this;
    }

    virtual void didFail(WebKit::WebFileError error)
    {
        ASSERT(m_callbacks);
        m_callbacks->didFail(error);
        delete this;
    }

    virtual bool shouldBlockUntilCompletion() const
    {
        return m_callbacks->shouldBlockUntilCompletion();
    }

private:
    AsyncFileWriterClient* m_client;
    KURL m_path;
    WebKit::WebFileSystem* m_webFileSystem;
    OwnPtr<WebCore::AsyncFileSystemCallbacks> m_callbacks;
};

void AsyncFileSystemChromium::createWriter(AsyncFileWriterClient* client, const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->readMetadata(path, new FileWriterHelperCallbacks(client, path, m_webFileSystem, callbacks));
}

void AsyncFileSystemChromium::createSnapshotFileAndReadMetadata(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    m_webFileSystem->createSnapshotFileAndReadMetadata(path, new WebKit::WebFileSystemCallbacksImpl(callbacks));
}

} // namespace WebCore