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| 1 // Copyright (c) 2012 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 "content/browser/device_orientation/observer_delegate.h" |
| 6 |
| 7 #include "base/logging.h" |
| 8 #include "content/browser/device_orientation/device_data.h" |
| 9 #include "content/browser/device_orientation/orientation.h" |
| 10 #include "ipc/ipc_sender.h" |
| 11 |
| 12 namespace device_orientation { |
| 13 |
| 14 ObserverDelegate::ObserverDelegate(DeviceData::Type device_data_type, |
| 15 Provider* provider, int render_view_id, |
| 16 IPC::Sender* sender) |
| 17 : Observer(device_data_type), |
| 18 provider_(provider), |
| 19 render_view_id_(render_view_id), |
| 20 sender_(sender) { |
| 21 provider_->AddObserver(this); |
| 22 } |
| 23 |
| 24 ObserverDelegate::~ObserverDelegate() { |
| 25 provider_->RemoveObserver(this); |
| 26 } |
| 27 |
| 28 void ObserverDelegate::OnDeviceDataUpdate( |
| 29 const DeviceData* device_data, DeviceData::Type device_data_type) { |
| 30 scoped_refptr<const DeviceData> new_device_data(device_data); |
| 31 if (!new_device_data.get()) |
| 32 new_device_data = EmptyDeviceData(device_data_type); |
| 33 |
| 34 sender_->Send(new_device_data->CreateIPCMessage(render_view_id_)); |
| 35 } |
| 36 |
| 37 DeviceData* ObserverDelegate::EmptyDeviceData(DeviceData::Type type) { |
| 38 DCHECK(type == DeviceData::kTypeOrientation); |
| 39 return new Orientation(); |
| 40 } |
| 41 |
| 42 } // namespace device_orientation |
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