Source/WebCore/fileapi/LocalFileSystem.cpp

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "config.h"
#include "LocalFileSystem.h"

#if PLATFORM(CHROMIUM)
#error "Chromium should not compile this file and instead define its own version of these factories."
#endif

#if ENABLE(FILE_SYSTEM)

#include "CrossThreadTask.h"
#include "DOMFileSystem.h"
#include "ErrorCallback.h"
#include "ExceptionCode.h"
#include "FileError.h"
#include "FileSystemCallback.h"
#include "FileSystemCallbacks.h"
#include "ScriptExecutionContext.h"
#include "SecurityOrigin.h"
#include <wtf/PassRefPtr.h>

namespace WebCore {

LocalFileSystem* LocalFileSystem::s_instance = 0;

void LocalFileSystem::initializeLocalFileSystem(const String& basePath)
{
    // FIXME: Should initialize the quota settings as well.
    ASSERT(isMainThread());
    ASSERT(!s_instance);
    if (s_instance)
        return;

    OwnPtr<LocalFileSystem> localFileSystem = adoptPtr(new LocalFileSystem(basePath));
    s_instance = localFileSystem.leakPtr();
}

LocalFileSystem& LocalFileSystem::localFileSystem()
{
    // initializeLocalFileSystem must be called prior calling this.
    ASSERT(s_instance);
    return *s_instance;
}

String LocalFileSystem::fileSystemBasePath() const
{
    return m_basePath;
}

static void openFileSystem(ScriptExecutionContext*, const String& basePath, const String& identifier, AsyncFileSystem::Type type, bool create, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
{
    AsyncFileSystem::openFileSystem(basePath, identifier, type, create, callbacks);
}

void LocalFileSystem::readFileSystem(ScriptExecutionContext* context, AsyncFileSystem::Type type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool)
{
    // AsyncFileSystem::openFileSystem calls callbacks synchronously, so the method needs to be called asynchronously.
    context->postTask(createCallbackTask(&openFileSystem, fileSystemBasePath(), context->securityOrigin()->databaseIdentifier(), type, false, callbacks));
}

void LocalFileSystem::requestFileSystem(ScriptExecutionContext* context, AsyncFileSystem::Type type, long long, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool)
{
    // AsyncFileSystem::openFileSystem calls callbacks synchronously, so the method needs to be called asynchronously.
    context->postTask(createCallbackTask(&openFileSystem, fileSystemBasePath(), context->securityOrigin()->databaseIdentifier(), type, true, callbacks));
}

} // namespace

#endif // ENABLE(FILE_SYSTEM)