Source/core/platform/chromium/support/WebFileSystemCallbacks.cpp

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#include "config.h"
#include "public/platform/WebFileSystemCallbacks.h"

#include "core/platform/AsyncFileSystemCallbacks.h"
#include "core/platform/FileMetadata.h"
#include "public/platform/WebFileInfo.h"
#include "public/platform/WebFileSystem.h"
#include "public/platform/WebFileSystemEntry.h"
#include "public/platform/WebFileWriter.h"
#include "public/platform/WebString.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"

using namespace WebCore;

namespace WebKit {

class WebFileSystemCallbacksPrivate : public RefCounted<WebFileSystemCallbacksPrivate> {
public:
    static PassRefPtr<WebFileSystemCallbacksPrivate> create(const PassOwnPtr<AsyncFileSystemCallbacks>& callbacks)
    {
        return adoptRef(new WebFileSystemCallbacksPrivate(callbacks));
    }

    AsyncFileSystemCallbacks* callbacks() { return m_callbacks.get(); }

private:
    WebFileSystemCallbacksPrivate(const PassOwnPtr<AsyncFileSystemCallbacks>& callbacks) : m_callbacks(callbacks) { }
    OwnPtr<AsyncFileSystemCallbacks> m_callbacks;
};

WebFileSystemCallbacks::WebFileSystemCallbacks(const PassOwnPtr<AsyncFileSystemCallbacks>& callbacks)
{
    m_private = WebFileSystemCallbacksPrivate::create(callbacks);
}

void WebFileSystemCallbacks::reset()
{
    m_private.reset();
}

void WebFileSystemCallbacks::assign(const WebFileSystemCallbacks& other)
{
    m_private = other.m_private;
}

void WebFileSystemCallbacks::didSucceed()
{
    ASSERT(!m_private.isNull());
    m_private->callbacks()->didSucceed();
    m_private.reset();
}

void WebFileSystemCallbacks::didReadMetadata(const WebFileInfo& webFileInfo)
{
    ASSERT(!m_private.isNull());
    FileMetadata fileMetadata;
    fileMetadata.modificationTime = webFileInfo.modificationTime;
    fileMetadata.length = webFileInfo.length;
    fileMetadata.type = static_cast<FileMetadata::Type>(webFileInfo.type);
    fileMetadata.platformPath = webFileInfo.platformPath;
    m_private->callbacks()->didReadMetadata(fileMetadata);
    m_private.reset();
}

void WebFileSystemCallbacks::didCreateSnapshotFile(const WebFileInfo& webFileInfo)
{
    ASSERT(!m_private.isNull());
    // It's important to create a BlobDataHandle that refers to the platform file path prior
    // to return from this method so the underlying file will not be deleted.
    OwnPtr<BlobData> blobData = BlobData::create();
    blobData->appendFile(webFileInfo.platformPath);
    RefPtr<BlobDataHandle> snapshotBlob = BlobDataHandle::create(blobData.release(), webFileInfo.length);

    FileMetadata fileMetadata;
    fileMetadata.modificationTime = webFileInfo.modificationTime;
    fileMetadata.length = webFileInfo.length;
    fileMetadata.type = static_cast<FileMetadata::Type>(webFileInfo.type);
    fileMetadata.platformPath = webFileInfo.platformPath;
    m_private->callbacks()->didCreateSnapshotFile(fileMetadata, snapshotBlob);
    m_private.reset();
}

void WebFileSystemCallbacks::didReadDirectory(const WebVector<WebFileSystemEntry>& entries, bool hasMore)
{
    ASSERT(!m_private.isNull());
    for (size_t i = 0; i < entries.size(); ++i)
        m_private->callbacks()->didReadDirectoryEntry(entries[i].name, entries[i].isDirectory);
    m_private->callbacks()->didReadDirectoryEntries(hasMore);
    m_private.reset();
}

void WebFileSystemCallbacks::didOpenFileSystem(const WebString& name, const WebURL& rootURL)
{
    ASSERT(!m_private.isNull());
    m_private->callbacks()->didOpenFileSystem(name, rootURL);
    m_private.reset();
}

void WebFileSystemCallbacks::didCreateFileWriter(WebFileWriter* webFileWriter, long long length)
{
    ASSERT(!m_private.isNull());
    m_private->callbacks()->didCreateFileWriter(adoptPtr(webFileWriter), length);
    m_private.reset();
}

void WebFileSystemCallbacks::didFail(WebFileError error)
{
    ASSERT(!m_private.isNull());
    m_private->callbacks()->didFail(error);
    m_private.reset();
}

bool WebFileSystemCallbacks::shouldBlockUntilCompletion() const
{
    ASSERT(!m_private.isNull());
    return m_private->callbacks()->shouldBlockUntilCompletion();
}

} // namespace WebKit