DIAL extension API skeleton.

chrome/browser/extensions/api/dial/dial_api.cc

+// Copyright (c) 2012 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/browser/extensions/api/dial/dial_api.h"
+
+#include <vector>
+
+#include "chrome/browser/extensions/api/dial/dial_api_factory.h"
+#include "chrome/browser/extensions/event_names.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/extensions/api/dial.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace {
+
+const char kDialServiceError[] = "Dial service error.";
+
+}  // namespace
+
+namespace extensions {
+
+DialAPI::DialAPI(Profile* profile)
+    : RefcountedProfileKeyedService(content::BrowserThread::IO),
+      profile_(profile) {
+  ExtensionSystem::Get(profile)->event_router()->RegisterObserver(
+      this, extensions::event_names::kOnDialDeviceList);
+}
+
+DialAPI::~DialAPI() {}
+
+DialRegistry* DialAPI::dial_registry() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  if (!dial_registry_.get()) {
+    dial_registry_.reset(new DialRegistry(this));
+  }
+  return dial_registry_.get();
+}
+
+void DialAPI::OnListenerAdded(const EventListenerInfo& details) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&DialAPI::NotifyListenerAddedOnIOThread, this));
+}
+
+void DialAPI::OnListenerRemoved(const EventListenerInfo& details) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&DialAPI::NotifyListenerRemovedOnIOThread, this));
+}
+
+void DialAPI::NotifyListenerAddedOnIOThread() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DVLOG(1) << "DIAL device event listener added.";
+  dial_registry()->OnListenerAdded();
+}
+
+void DialAPI::NotifyListenerRemovedOnIOThread() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DVLOG(1) << "DIAL device event listener removed";
+  dial_registry()->OnListenerRemoved();
+}
+
+void DialAPI::OnDialDeviceEvent(const DialRegistry::DeviceList& devices) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+      base::Bind(&DialAPI::SendEventOnUIThread, this, devices));
+}
+
+void DialAPI::SendEventOnUIThread(const DialRegistry::DeviceList& devices) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  std::vector<linked_ptr<api::dial::DialDevice> > args;
+  for (DialRegistry::DeviceList::const_iterator it = devices.begin();
+       it != devices.end(); ++it) {
+    linked_ptr<api::dial::DialDevice> api_device =
+        make_linked_ptr(new api::dial::DialDevice);
+    it->FillDialDevice(api_device.get());
+    args.push_back(api_device);
+  }
+  scoped_ptr<base::ListValue> results = api::dial::OnDeviceList::Create(args);
+
+  extensions::ExtensionSystem::Get(profile_)->event_router()->
+      DispatchEventToRenderers(event_names::kOnDialDeviceList, results.Pass(),
+          profile_, GURL());
+}
+
+void DialAPI::ShutdownOnUIThread() {}
+
+namespace api {
+
+DialDiscoverNowFunction::DialDiscoverNowFunction()
+    : dial_(NULL), result_(false) {
+}
+
+bool DialDiscoverNowFunction::Prepare() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(profile());
+  dial_ = DialAPIFactory::GetInstance()->GetForProfile(profile());
+  return true;
+}
+
+void DialDiscoverNowFunction::Work() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  result_ = dial_->dial_registry()->DiscoverNow();
+}
+
+bool DialDiscoverNowFunction::Respond() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  if (!result_)
+    error_ = kDialServiceError;
+
+  SetResult(base::Value::CreateBooleanValue(result_));
+  return true;
+}
+
+}  // namespace api
+
+}  // namespace extensions