WorkerScriptLoader.cpp [plain text]
#include "config.h"
#if ENABLE(WORKERS)
#include "WorkerScriptLoader.h"
#include "CrossThreadTask.h"
#include "ResourceResponse.h"
#include "ScriptExecutionContext.h"
#include "SecurityOrigin.h"
#include "TextResourceDecoder.h"
#include "WorkerContext.h"
#include "WorkerScriptLoaderClient.h"
#include "WorkerThreadableLoader.h"
#include <wtf/OwnPtr.h>
#include <wtf/RefPtr.h>
#include <wtf/UnusedParam.h>
namespace WebCore {
WorkerScriptLoader::WorkerScriptLoader()
: m_client(0)
, m_script("")
, m_failed(false)
, m_identifier(0)
, m_finishing(false)
#if PLATFORM(CHROMIUM)
, m_targetType(ResourceRequest::TargetIsWorker)
#endif
{
}
WorkerScriptLoader::~WorkerScriptLoader()
{
}
void WorkerScriptLoader::loadSynchronously(ScriptExecutionContext* scriptExecutionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy)
{
m_url = url;
OwnPtr<ResourceRequest> request(createResourceRequest());
if (!request)
return;
ASSERT(scriptExecutionContext->isWorkerContext());
ThreadableLoaderOptions options;
options.allowCredentials = AllowStoredCredentials;
options.crossOriginRequestPolicy = crossOriginRequestPolicy;
options.sendLoadCallbacks = SendCallbacks;
WorkerThreadableLoader::loadResourceSynchronously(static_cast<WorkerContext*>(scriptExecutionContext), *request, *this, options);
}
void WorkerScriptLoader::loadAsynchronously(ScriptExecutionContext* scriptExecutionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy, WorkerScriptLoaderClient* client)
{
ASSERT(client);
m_client = client;
m_url = url;
OwnPtr<ResourceRequest> request(createResourceRequest());
if (!request)
return;
ThreadableLoaderOptions options;
options.allowCredentials = AllowStoredCredentials;
options.crossOriginRequestPolicy = crossOriginRequestPolicy;
options.sendLoadCallbacks = SendCallbacks;
RefPtr<WorkerScriptLoader> protect(this);
m_threadableLoader = ThreadableLoader::create(scriptExecutionContext, this, *request, options);
}
const KURL& WorkerScriptLoader::responseURL() const
{
ASSERT(!failed());
return m_responseURL;
}
PassOwnPtr<ResourceRequest> WorkerScriptLoader::createResourceRequest()
{
OwnPtr<ResourceRequest> request = adoptPtr(new ResourceRequest(m_url));
request->setHTTPMethod("GET");
#if PLATFORM(CHROMIUM) || PLATFORM(BLACKBERRY)
request->setTargetType(m_targetType);
#endif
return request.release();
}
void WorkerScriptLoader::didReceiveResponse(unsigned long identifier, const ResourceResponse& response)
{
if (response.httpStatusCode() / 100 != 2 && response.httpStatusCode()) {
m_failed = true;
return;
}
m_responseURL = response.url();
m_responseEncoding = response.textEncodingName();
if (m_client)
m_client->didReceiveResponse(identifier, response);
}
void WorkerScriptLoader::didReceiveData(const char* data, int len)
{
if (m_failed)
return;
if (!m_decoder) {
if (!m_responseEncoding.isEmpty())
m_decoder = TextResourceDecoder::create("text/javascript", m_responseEncoding);
else
m_decoder = TextResourceDecoder::create("text/javascript", "UTF-8");
}
if (!len)
return;
if (len == -1)
len = strlen(data);
m_script += m_decoder->decode(data, len);
}
void WorkerScriptLoader::didFinishLoading(unsigned long identifier, double)
{
if (m_failed) {
notifyError();
return;
}
if (m_decoder)
m_script += m_decoder->flush();
m_identifier = identifier;
notifyFinished();
}
void WorkerScriptLoader::didFail(const ResourceError&)
{
notifyError();
}
void WorkerScriptLoader::didFailRedirectCheck()
{
notifyError();
}
void WorkerScriptLoader::notifyError()
{
m_failed = true;
notifyFinished();
}
void WorkerScriptLoader::notifyFinished()
{
if (!m_client || m_finishing)
return;
m_finishing = true;
m_client->notifyFinished();
}
}
#endif // ENABLE(WORKERS)