root/Source/platform/exported/WebFileSystemCallbacks.cpp

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DEFINITIONS

This source file includes following definitions.
  1. create
  2. callbacks
  3. reset
  4. assign
  5. didSucceed
  6. didReadMetadata
  7. didCreateSnapshotFile
  8. didReadDirectory
  9. didOpenFileSystem
  10. didResolveURL
  11. didCreateFileWriter
  12. didFail
  13. shouldBlockUntilCompletion

/*
 * Copyright (C) 2013 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.
 */

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

#include "platform/AsyncFileSystemCallbacks.h"
#include "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 blink {

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::didResolveURL(const WebString& name, const WebURL& rootURL, WebFileSystemType type, const WebString& filePath, bool isDirectory)
{
    ASSERT(!m_private.isNull());
    m_private->callbacks()->didResolveURL(name, rootURL, static_cast<WebCore::FileSystemType>(type), filePath, isDirectory);
    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 blink

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