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 12 namespace content { 13 14 BatteryStatusDispatcher::BatteryStatusDispatcher(RenderThread* thread) 15 : listener_(0) { 16 if (thread) 17 thread->AddObserver(this); 18 } 19 20 BatteryStatusDispatcher::~BatteryStatusDispatcher() { 21 if (listener_) 22 Stop(); 23 } 24 25 bool BatteryStatusDispatcher::SetListener( 26 blink::WebBatteryStatusListener* listener) { 27 listener_ = listener; 28 return listener ? Start() : Stop(); 29 } 30 31 bool 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 41 bool BatteryStatusDispatcher::Start() { 42 return RenderThread::Get()->Send(new BatteryStatusHostMsg_Start()); 43 } 44 45 bool BatteryStatusDispatcher::Stop() { 46 return RenderThread::Get()->Send(new BatteryStatusHostMsg_Stop()); 47 } 48 49 void BatteryStatusDispatcher::OnDidChange( 50 const blink::WebBatteryStatus& status) { 51 if (listener_) 52 listener_->updateBatteryStatus(status); 53 } 54 55 } // namespace content 56
