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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 "chrome/worker/webworker_stub.h"
#include "base/command_line.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/webmessageportchannel_impl.h"
#include "chrome/common/worker_messages.h"
#include "chrome/worker/nativewebworker_impl.h"
#include "webkit/api/public/WebString.h"
#include "webkit/api/public/WebURL.h"
#include "webkit/api/public/WebWorker.h"
using WebKit::WebWorker;
static bool UrlIsNativeWorker(const GURL& url) {
// If the renderer was not passed the switch to enable native workers,
// then the URL should be treated as a JavaScript worker.
if (!CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableNativeWebWorkers)) {
return false;
}
// Based on the suffix, decide whether the url should be considered
// a NativeWebWorker (for .nexe) or a WebWorker (for anything else).
const std::string kNativeSuffix(".nexe");
std::string worker_url = url.path();
// Compute the start index of the suffix.
std::string::size_type suffix_index =
worker_url.length() - kNativeSuffix.length();
std::string::size_type pos = worker_url.find(kNativeSuffix, suffix_index);
return (suffix_index == pos);
}
WebWorkerStub::WebWorkerStub(const GURL& url, int route_id)
: WebWorkerStubBase(route_id) {
if (UrlIsNativeWorker(url)) {
// Launch a native worker.
impl_ = NativeWebWorkerImpl::create(client());
} else {
// Launch a JavaScript worker.
impl_ = WebKit::WebWorker::create(client());
}
}
WebWorkerStub::~WebWorkerStub() {
impl_->clientDestroyed();
}
void WebWorkerStub::OnMessageReceived(const IPC::Message& message) {
if (!impl_)
return;
IPC_BEGIN_MESSAGE_MAP(WebWorkerStub, message)
IPC_MESSAGE_FORWARD(WorkerMsg_StartWorkerContext, impl_,
WebWorker::startWorkerContext)
IPC_MESSAGE_HANDLER(WorkerMsg_TerminateWorkerContext,
OnTerminateWorkerContext)
IPC_MESSAGE_HANDLER(WorkerMsg_PostMessage, OnPostMessage)
IPC_MESSAGE_FORWARD(WorkerMsg_WorkerObjectDestroyed, impl_,
WebWorker::workerObjectDestroyed)
IPC_END_MESSAGE_MAP()
}
void WebWorkerStub::OnTerminateWorkerContext() {
impl_->terminateWorkerContext();
// Call the client to make sure context exits.
EnsureWorkerContextTerminates();
}
void WebWorkerStub::OnPostMessage(
const string16& message,
const std::vector<int>& sent_message_port_ids,
const std::vector<int>& new_routing_ids) {
WebKit::WebMessagePortChannelArray channels(sent_message_port_ids.size());
for (size_t i = 0; i < sent_message_port_ids.size(); i++) {
channels[i] = new WebMessagePortChannelImpl(
new_routing_ids[i], sent_message_port_ids[i]);
}
impl_->postMessageToWorkerContext(message, channels);
}
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