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/*
* Copyright (C) 2010 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 "modules/filesystem/DOMFileSystemSync.h"
#include "bindings/v8/ExceptionState.h"
#include "core/dom/ExceptionCode.h"
#include "core/fileapi/File.h"
#include "core/fileapi/FileError.h"
#include "modules/filesystem/DOMFilePath.h"
#include "modules/filesystem/DirectoryEntrySync.h"
#include "modules/filesystem/ErrorCallback.h"
#include "modules/filesystem/FileEntrySync.h"
#include "modules/filesystem/FileSystemCallbacks.h"
#include "modules/filesystem/FileWriterBaseCallback.h"
#include "modules/filesystem/FileWriterSync.h"
#include "platform/FileMetadata.h"
#include "public/platform/WebFileSystem.h"
#include "public/platform/WebFileSystemCallbacks.h"
namespace WebCore {
class FileWriterBase;
PassRefPtr<DOMFileSystemSync> DOMFileSystemSync::create(DOMFileSystemBase* fileSystem)
{
return adoptRef(new DOMFileSystemSync(fileSystem->m_context, fileSystem->name(), fileSystem->type(), fileSystem->rootURL()));
}
DOMFileSystemSync::DOMFileSystemSync(ExecutionContext* context, const String& name, FileSystemType type, const KURL& rootURL)
: DOMFileSystemBase(context, name, type, rootURL)
{
ScriptWrappable::init(this);
}
DOMFileSystemSync::~DOMFileSystemSync()
{
}
void DOMFileSystemSync::reportError(PassOwnPtr<ErrorCallback> errorCallback, PassRefPtr<FileError> fileError)
{
errorCallback->handleEvent(fileError.get());
}
PassRefPtr<DirectoryEntrySync> DOMFileSystemSync::root()
{
return DirectoryEntrySync::create(this, DOMFilePath::root);
}
namespace {
class CreateFileHelper : public AsyncFileSystemCallbacks {
public:
class CreateFileResult : public RefCounted<CreateFileResult> {
public:
static PassRefPtr<CreateFileResult> create()
{
return adoptRef(new CreateFileResult());
}
bool m_failed;
int m_code;
RefPtr<File> m_file;
private:
CreateFileResult()
: m_failed(false)
, m_code(0)
{
}
~CreateFileResult()
{
}
friend class WTF::RefCounted<CreateFileResult>;
};
static PassOwnPtr<AsyncFileSystemCallbacks> create(PassRefPtr<CreateFileResult> result, const String& name, const KURL& url, FileSystemType type)
{
return adoptPtr(static_cast<AsyncFileSystemCallbacks*>(new CreateFileHelper(result, name, url, type)));
}
virtual void didFail(int code)
{
m_result->m_failed = true;
m_result->m_code = code;
}
virtual ~CreateFileHelper()
{
}
virtual void didCreateSnapshotFile(const FileMetadata& metadata, PassRefPtr<BlobDataHandle> snapshot)
{
// We can't directly use the snapshot blob data handle because the content type on it hasn't been set.
// The |snapshot| param is here to provide a a chain of custody thru thread bridging that is held onto until
// *after* we've coined a File with a new handle that has the correct type set on it. This allows the
// blob storage system to track when a temp file can and can't be safely deleted.
// For regular filesystem types (temporary or persistent), we should not cache file metadata as it could change File semantics.
// For other filesystem types (which could be platform-specific ones), there's a chance that the files are on remote filesystem.
// If the port has returned metadata just pass it to File constructor (so we may cache the metadata).
// FIXME: We should use the snapshot metadata for all files.
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=17746
if (m_type == FileSystemTypeTemporary || m_type == FileSystemTypePersistent) {
m_result->m_file = File::createWithName(metadata.platformPath, m_name);
} else if (!metadata.platformPath.isEmpty()) {
// If the platformPath in the returned metadata is given, we create a File object for the path.
m_result->m_file = File::createForFileSystemFile(m_name, metadata).get();
} else {
// Otherwise create a File from the FileSystem URL.
m_result->m_file = File::createForFileSystemFile(m_url, metadata).get();
}
}
virtual bool shouldBlockUntilCompletion() const OVERRIDE
{
return true;
}
private:
CreateFileHelper(PassRefPtr<CreateFileResult> result, const String& name, const KURL& url, FileSystemType type)
: m_result(result)
, m_name(name)
, m_url(url)
, m_type(type)
{
}
RefPtr<CreateFileResult> m_result;
String m_name;
KURL m_url;
FileSystemType m_type;
};
} // namespace
PassRefPtr<File> DOMFileSystemSync::createFile(const FileEntrySync* fileEntry, ExceptionState& exceptionState)
{
KURL fileSystemURL = createFileSystemURL(fileEntry);
RefPtr<CreateFileHelper::CreateFileResult> result(CreateFileHelper::CreateFileResult::create());
fileSystem()->createSnapshotFileAndReadMetadata(fileSystemURL, CreateFileHelper::create(result, fileEntry->name(), fileSystemURL, type()));
if (result->m_failed) {
exceptionState.throwUninformativeAndGenericDOMException(result->m_code);
return 0;
}
return result->m_file;
}
namespace {
class ReceiveFileWriterCallback : public FileWriterBaseCallback {
public:
static PassOwnPtr<ReceiveFileWriterCallback> create()
{
return adoptPtr(new ReceiveFileWriterCallback());
}
void handleEvent(FileWriterBase*)
{
}
private:
ReceiveFileWriterCallback()
{
}
};
class LocalErrorCallback : public ErrorCallback {
public:
static PassOwnPtr<LocalErrorCallback> create(FileError::ErrorCode& errorCode)
{
return adoptPtr(new LocalErrorCallback(errorCode));
}
void handleEvent(FileError* error)
{
ASSERT(error->code() != FileError::OK);
m_errorCode = error->code();
}
private:
explicit LocalErrorCallback(FileError::ErrorCode& errorCode)
: m_errorCode(errorCode)
{
}
FileError::ErrorCode& m_errorCode;
};
}
PassRefPtr<FileWriterSync> DOMFileSystemSync::createWriter(const FileEntrySync* fileEntry, ExceptionState& exceptionState)
{
ASSERT(fileEntry);
RefPtr<FileWriterSync> fileWriter = FileWriterSync::create();
OwnPtr<ReceiveFileWriterCallback> successCallback = ReceiveFileWriterCallback::create();
FileError::ErrorCode errorCode = FileError::OK;
OwnPtr<LocalErrorCallback> errorCallback = LocalErrorCallback::create(errorCode);
OwnPtr<AsyncFileSystemCallbacks> callbacks = FileWriterBaseCallbacks::create(fileWriter, successCallback.release(), errorCallback.release());
callbacks->setShouldBlockUntilCompletion(true);
fileSystem()->createFileWriter(createFileSystemURL(fileEntry), fileWriter.get(), callbacks.release());
if (errorCode != FileError::OK) {
FileError::throwDOMException(exceptionState, errorCode);
return 0;
}
return fileWriter.release();
}
}
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