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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_WEBWORKERCLIENT_IMPL_H_
#define WEBKIT_GLUE_WEBWORKERCLIENT_IMPL_H_
#if ENABLE(WORKERS)
#include "webkit/api/public/WebWorkerClient.h"
#include "WorkerContextProxy.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class ScriptExecutionContext;
}
namespace WebKit {
class WebWorker;
}
// The purpose of this class is to provide a WorkerContextProxy
// implementation that we can give to WebKit. Internally, it converts the
// data types to Chrome compatible ones so that renderer code can use it over
// IPC.
class WebWorkerClientImpl : public WebCore::WorkerContextProxy,
public WebKit::WebWorkerClient {
public:
WebWorkerClientImpl(WebCore::Worker* worker);
// WebCore::WorkerContextProxy Factory.
static WebCore::WorkerContextProxy* createWorkerContextProxy(
WebCore::Worker* worker);
void set_webworker(WebKit::WebWorker* webworker);
// WebCore::WorkerContextProxy methods:
// These are called on the thread that created the worker. In the renderer
// process, this will be the main WebKit thread. In the worker process, this
// will be the thread of the executing worker (not the main WebKit thread).
virtual void startWorkerContext(const WebCore::KURL& script_url,
const WebCore::String& user_agent,
const WebCore::String& source_code);
virtual void terminateWorkerContext();
virtual void postMessageToWorkerContext(
WTF::PassRefPtr<WebCore::SerializedScriptValue> message,
WTF::PassOwnPtr<WebCore::MessagePortChannelArray> channels);
virtual bool hasPendingActivity() const;
virtual void workerObjectDestroyed();
// WebWorkerClient methods:
// These are called on the main WebKit thread.
virtual void postMessageToWorkerObject(
const WebKit::WebString& message,
const WebKit::WebMessagePortChannelArray& channels);
virtual void postExceptionToWorkerObject(
const WebKit::WebString& error_message,
int line_number,
const WebKit::WebString& source_url);
virtual void postConsoleMessageToWorkerObject(
int destination_id,
int source_id,
int message_type,
int message_level,
const WebKit::WebString& message,
int line_number,
const WebKit::WebString& source_url);
virtual void confirmMessageFromWorkerObject(bool has_pending_activity);
virtual void reportPendingActivity(bool has_pending_activity);
virtual void workerContextDestroyed();
virtual WebKit::WebWorker* createWorker(WebKit::WebWorkerClient* client) {
return NULL;
}
virtual WebKit::WebNotificationPresenter* notificationPresenter() {
// TODO(johnnyg): Notifications not yet supported in workers.
// Coming soon.
return NULL;
}
private:
virtual ~WebWorkerClientImpl();
// Methods used to support WebWorkerClientImpl being constructed on worker
// threads.
// These tasks are dispatched on the WebKit thread.
static void StartWorkerContextTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr,
const WebCore::String& script_url,
const WebCore::String& user_agent,
const WebCore::String& source_code);
static void TerminateWorkerContextTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr);
static void PostMessageToWorkerContextTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr,
const WebCore::String& message,
WTF::PassOwnPtr<WebCore::MessagePortChannelArray> channels);
static void WorkerObjectDestroyedTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr);
// These tasks are dispatched on the thread that created the worker (i.e.
// main WebKit thread in renderer process, and the worker thread in the worker
// process).
static void PostMessageToWorkerObjectTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr,
const WebCore::String& message,
WTF::PassOwnPtr<WebCore::MessagePortChannelArray> channels);
static void PostExceptionToWorkerObjectTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr,
const WebCore::String& error_message,
int line_number,
const WebCore::String& source_url);
static void PostConsoleMessageToWorkerObjectTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr,
int destination_id,
int source_id,
int message_type,
int message_level,
const WebCore::String& message,
int line_number,
const WebCore::String& source_url);
static void ConfirmMessageFromWorkerObjectTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr);
static void ReportPendingActivityTask(
WebCore::ScriptExecutionContext* context,
WebWorkerClientImpl* this_ptr,
bool has_pending_activity);
// Guard against context from being destroyed before a worker exits.
WTF::RefPtr<WebCore::ScriptExecutionContext> script_execution_context_;
WebCore::Worker* worker_;
WebKit::WebWorker* webworker_;
bool asked_to_terminate_;
uint32 unconfirmed_message_count_;
bool worker_context_had_pending_activity_;
WTF::ThreadIdentifier worker_thread_id_;
};
#endif
#endif // WEBKIT_GLUE_WEBWORKERCLIENT_IMPL_H_
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