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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_GLUE_WEBWORKER_IMPL_H_
#define WEBKIT_GLUE_WEBWORKER_IMPL_H_
#include "webkit/api/public/WebWorker.h"
#if ENABLE(WORKERS)
#include "ScriptExecutionContext.h"
#include "WorkerLoaderProxy.h"
#include "WorkerObjectProxy.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class WorkerThread;
};
class WebView;
// This class is used by the worker process code to talk to the WebCore::Worker
// implementation. It can't use it directly since it uses WebKit types, so this
// class converts the data types. When the WebCore::Worker object wants to call
// WebCore::WorkerObjectProxy, this class will conver to Chrome data types first
// and then call the supplied WebWorkerClient.
class WebWorkerImpl: public WebCore::WorkerObjectProxy,
public WebCore::WorkerLoaderProxy,
public WebKit::WebWorker {
public:
explicit WebWorkerImpl(WebKit::WebWorkerClient* client);
// WebCore::WorkerObjectProxy methods:
virtual void postMessageToWorkerObject(
WTF::PassRefPtr<WebCore::SerializedScriptValue> message,
WTF::PassOwnPtr<WebCore::MessagePortChannelArray> channels);
virtual void postExceptionToWorkerObject(
const WebCore::String& error_message,
int line_number,
const WebCore::String& source_url);
virtual void postConsoleMessageToWorkerObject(
WebCore::MessageDestination destination,
WebCore::MessageSource source,
WebCore::MessageType type,
WebCore::MessageLevel level,
const WebCore::String& message,
int line_number,
const WebCore::String& source_url);
virtual void confirmMessageFromWorkerObject(bool has_pending_activity);
virtual void reportPendingActivity(bool has_pending_activity);
virtual void workerContextDestroyed();
// WebCore::WorkerLoaderProxy methods:
virtual void postTaskToLoader(
WTF::PassRefPtr<WebCore::ScriptExecutionContext::Task>);
virtual void postTaskForModeToWorkerContext(
WTF::PassRefPtr<WebCore::ScriptExecutionContext::Task>,
const WebCore::String& mode);
// WebWorker methods:
virtual void startWorkerContext(const WebKit::WebURL& script_url,
const WebKit::WebString& user_agent,
const WebKit::WebString& source_code);
virtual void terminateWorkerContext();
virtual void postMessageToWorkerContext(
const WebKit::WebString& message,
const WebKit::WebMessagePortChannelArray& channel);
virtual void workerObjectDestroyed();
virtual void clientDestroyed();
WebKit::WebWorkerClient* client() { return client_; }
// Executes the given task on the main thread.
static void DispatchTaskToMainThread(
PassRefPtr<WebCore::ScriptExecutionContext::Task> task);
private:
virtual ~WebWorkerImpl();
// Tasks that are run on the worker thread.
static void PostMessageToWorkerContextTask(
WebCore::ScriptExecutionContext* context,
WebWorkerImpl* this_ptr,
const WebCore::String& message,
WTF::PassOwnPtr<WebCore::MessagePortChannelArray> channels);
// Function used to invoke tasks on the main thread.
static void InvokeTaskMethod(void* param);
// Tasks that are run on the main thread.
static void PostMessageTask(
WebCore::ScriptExecutionContext* context,
WebWorkerImpl* this_ptr,
WebCore::String message,
WTF::PassOwnPtr<WebCore::MessagePortChannelArray> channels);
static void PostExceptionTask(
WebCore::ScriptExecutionContext* context,
WebWorkerImpl* this_ptr,
const WebCore::String& error_message,
int line_number,
const WebCore::String& source_url);
static void PostConsoleMessageTask(
WebCore::ScriptExecutionContext* context,
WebWorkerImpl* this_ptr,
int destination,
int source,
int type,
int level,
const WebCore::String& message,
int line_number,
const WebCore::String& source_url);
static void ConfirmMessageTask(
WebCore::ScriptExecutionContext* context,
WebWorkerImpl* this_ptr,
bool has_pending_activity);
static void ReportPendingActivityTask(
WebCore::ScriptExecutionContext* context,
WebWorkerImpl* this_ptr,
bool has_pending_activity);
static void WorkerContextDestroyedTask(
WebCore::ScriptExecutionContext* context,
WebWorkerImpl* this_ptr);
WebKit::WebWorkerClient* client_;
// 'shadow page' - created to proxy loading requests from the worker.
WTF::RefPtr<WebCore::ScriptExecutionContext> loading_document_;
WebView* web_view_;
bool asked_to_terminate_;
WTF::RefPtr<WebCore::WorkerThread> worker_thread_;
DISALLOW_COPY_AND_ASSIGN(WebWorkerImpl);
};
#endif
#endif // WEBKIT_GLUE_WEBWORKER_IMPL_H_
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