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/*
* 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 "WorkerFileSystemClient.h"
#include "WebWorkerBase.h"
#include "WorkerAllowMainThreadBridgeBase.h"
#include "core/dom/ExecutionContext.h"
#include "core/platform/AsyncFileSystemCallbacks.h"
#include "core/workers/WorkerGlobalScope.h"
#include "core/workers/WorkerThread.h"
#include "public/platform/Platform.h"
#include "public/platform/WebFileError.h"
#include "public/platform/WebFileSystem.h"
#include "public/platform/WebFileSystemType.h"
#include "wtf/MainThread.h"
#include "wtf/Threading.h"
#include "wtf/text/WTFString.h"
using namespace WebCore;
namespace WebKit {
namespace {
// This class is used to route the result of the WebWorkerBase::allowFileSystem
// call back to the worker context.
class AllowFileSystemMainThreadBridge : public WorkerAllowMainThreadBridgeBase {
public:
static PassRefPtr<AllowFileSystemMainThreadBridge> create(WebCore::WorkerGlobalScope* workerGlobalScope, WebWorkerBase* webWorkerBase, const String& mode)
{
return adoptRef(new AllowFileSystemMainThreadBridge(workerGlobalScope, webWorkerBase, mode));
}
private:
AllowFileSystemMainThreadBridge(WebCore::WorkerGlobalScope* workerGlobalScope, WebWorkerBase* webWorkerBase, const String& mode)
: WorkerAllowMainThreadBridgeBase(workerGlobalScope, webWorkerBase)
{
postTaskToMainThread(adoptPtr(new AllowParams(mode)));
}
virtual bool allowOnMainThread(WebCommonWorkerClient* commonClient, AllowParams*)
{
ASSERT(isMainThread());
return commonClient->allowFileSystem();
}
};
} // namespace
PassOwnPtr<FileSystemClient> WorkerFileSystemClient::create()
{
return adoptPtr(static_cast<FileSystemClient*>(new WorkerFileSystemClient()));
}
WorkerFileSystemClient::~WorkerFileSystemClient()
{
}
bool WorkerFileSystemClient::allowFileSystem(ExecutionContext* context)
{
WorkerGlobalScope* workerGlobalScope = toWorkerGlobalScope(context);
WebCore::WorkerThread* workerThread = workerGlobalScope->thread();
WorkerRunLoop& runLoop = workerThread->runLoop();
WebCore::WorkerLoaderProxy* workerLoaderProxy = &workerThread->workerLoaderProxy();
String mode = "allowFileSystemMode";
mode.append(String::number(runLoop.createUniqueId()));
RefPtr<AllowFileSystemMainThreadBridge> bridge = AllowFileSystemMainThreadBridge::create(workerGlobalScope, workerLoaderProxy->toWebWorkerBase(), mode);
// Either the bridge returns, or the queue gets terminated.
// FIXME: This synchoronous execution should be replaced with better model.
if (runLoop.runInMode(workerGlobalScope, mode) == MessageQueueTerminated) {
bridge->cancel();
return false;
}
return bridge->result();
}
WorkerFileSystemClient::WorkerFileSystemClient()
{
}
} // namespace WebKit
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