1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "battery_status_dispatcher.h" 6 7#include "base/logging.h" 8#include "content/common/battery_status_messages.h" 9#include "content/renderer/render_thread_impl.h" 10#include "third_party/WebKit/public/platform/WebBatteryStatusListener.h" 11 12namespace content { 13 14BatteryStatusDispatcher::BatteryStatusDispatcher(RenderThread* thread) 15 : listener_(0) { 16 if (thread) 17 thread->AddObserver(this); 18} 19 20BatteryStatusDispatcher::~BatteryStatusDispatcher() { 21 if (listener_) 22 Stop(); 23} 24 25bool BatteryStatusDispatcher::SetListener( 26 blink::WebBatteryStatusListener* listener) { 27 listener_ = listener; 28 return listener ? Start() : Stop(); 29} 30 31bool BatteryStatusDispatcher::OnControlMessageReceived( 32 const IPC::Message& message) { 33 bool handled = true; 34 IPC_BEGIN_MESSAGE_MAP(BatteryStatusDispatcher, message) 35 IPC_MESSAGE_HANDLER(BatteryStatusMsg_DidChange, OnDidChange) 36 IPC_MESSAGE_UNHANDLED(handled = false) 37 IPC_END_MESSAGE_MAP() 38 return handled; 39} 40 41bool BatteryStatusDispatcher::Start() { 42 return RenderThread::Get()->Send(new BatteryStatusHostMsg_Start()); 43} 44 45bool BatteryStatusDispatcher::Stop() { 46 return RenderThread::Get()->Send(new BatteryStatusHostMsg_Stop()); 47} 48 49void BatteryStatusDispatcher::OnDidChange( 50 const blink::WebBatteryStatus& status) { 51 if (listener_) 52 listener_->updateBatteryStatus(status); 53} 54 55} // namespace content 56