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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.
#include "config.h"
#if ENABLE(WORKERS)
#include "base/compiler_specific.h"
#include "Frame.h"
#include "FrameLoaderClient.h"
#include "ScriptExecutionContext.h"
#include "WorkerMessagingProxy.h"
#include "Worker.h"
#undef LOG
#include "webkit/glue/webworkerclient_impl.h"
#include "webkit/glue/glue_util.h"
#include "webkit/glue/webframeloaderclient_impl.h"
#include "webkit/glue/webframe_impl.h"
#include "webkit/glue/webview_delegate.h"
#include "webkit/glue/webview_impl.h"
#include "third_party/WebKit/WebKit/chromium/public/WebConsoleMessage.h"
#include "third_party/WebKit/WebKit/chromium/public/WebScriptSource.h"
#include "third_party/WebKit/WebKit/chromium/public/WebWorker.h"
using WebKit::WebConsoleMessage;
using WebKit::WebScriptSource;
using WebKit::WebString;
using WebKit::WebWorker;
using WebKit::WebWorkerClient;
// When WebKit creates a WorkerContextProxy object, we check if we're in the
// renderer or worker process. If the latter, then we just use
// WebCore::WorkerMessagingProxy.
//
// If we're in the renderer process, then we need use the glue provided
// WebWorker object to talk to the worker process over IPC. The worker process
// talks to WebCore::Worker* using WorkerObjectProxy, which we implement on
// WebWorkerClientImpl.
WebCore::WorkerContextProxy* WebCore::WorkerContextProxy::create(
WebCore::Worker* worker) {
if (!worker->scriptExecutionContext()->isDocument())
return new WebCore::WorkerMessagingProxy(worker);
WebWorkerClientImpl* proxy = new WebWorkerClientImpl(worker);
// Get to the RenderView, so that we can tell the browser to create a
// worker process if necessary.
WebCore::Document* document = static_cast<WebCore::Document*>(
worker->scriptExecutionContext());
WebFrameLoaderClient* frame_loader_client =
static_cast<WebFrameLoaderClient*>(document->frame()->loader()->client());
WebViewDelegate* webview_delegate =
frame_loader_client->webframe()->webview_impl()->delegate();
WebWorker* webworker = webview_delegate->CreateWebWorker(proxy);
proxy->set_webworker(webworker);
return proxy;
}
WebWorkerClientImpl::WebWorkerClientImpl(WebCore::Worker* worker)
: script_execution_context_(worker->scriptExecutionContext()),
worker_(worker),
asked_to_terminate_(false),
unconfirmed_message_count_(0),
worker_context_had_pending_activity_(false) {
}
WebWorkerClientImpl::~WebWorkerClientImpl() {
}
void WebWorkerClientImpl::set_webworker(WebWorker* webworker) {
webworker_ = webworker;
}
void WebWorkerClientImpl::startWorkerContext(
const WebCore::KURL& script_url,
const WebCore::String& user_agent,
const WebCore::String& source_code) {
// Worker.terminate() could be called from JS before the context is started.
if (asked_to_terminate_)
return;
webworker_->startWorkerContext(
webkit_glue::KURLToWebURL(script_url),
webkit_glue::StringToWebString(user_agent),
webkit_glue::StringToWebString(source_code));
}
void WebWorkerClientImpl::terminateWorkerContext() {
if (asked_to_terminate_)
return;
asked_to_terminate_ = true;
webworker_->terminateWorkerContext();
}
void WebWorkerClientImpl::postMessageToWorkerContext(
const WebCore::String& message) {
// Worker.terminate() could be called from JS before the context is started.
if (asked_to_terminate_)
return;
++unconfirmed_message_count_;
webworker_->postMessageToWorkerContext(
webkit_glue::StringToWebString(message));
}
bool WebWorkerClientImpl::hasPendingActivity() const {
return !asked_to_terminate_ &&
(unconfirmed_message_count_ || worker_context_had_pending_activity_);
}
void WebWorkerClientImpl::workerObjectDestroyed() {
webworker_->workerObjectDestroyed();
// The lifetime of this proxy is controlled by the worker.
delete this;
}
void WebWorkerClientImpl::postMessageToWorkerObject(const WebString& message) {
worker_->dispatchMessage(webkit_glue::WebStringToString(message));
}
void WebWorkerClientImpl::postExceptionToWorkerObject(
const WebString& error_message,
int line_number,
const WebString& source_url) {
script_execution_context_->reportException(
webkit_glue::WebStringToString(error_message),
line_number,
webkit_glue::WebStringToString(source_url));
}
void WebWorkerClientImpl::postConsoleMessageToWorkerObject(
int destination_id,
int source_id,
int message_level,
const WebString& message,
int line_number,
const WebString& source_url) {
script_execution_context_->addMessage(
static_cast<WebCore::MessageDestination>(destination_id),
static_cast<WebCore::MessageSource>(source_id),
static_cast<WebCore::MessageLevel>(message_level),
webkit_glue::WebStringToString(message),
line_number,
webkit_glue::WebStringToString(source_url));
}
void WebWorkerClientImpl::confirmMessageFromWorkerObject(
bool has_pending_activity) {
--unconfirmed_message_count_;
}
void WebWorkerClientImpl::reportPendingActivity(bool has_pending_activity) {
worker_context_had_pending_activity_ = has_pending_activity;
}
void WebWorkerClientImpl::workerContextDestroyed() {
}
#endif
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