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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 "ui/events/x/device_list_cache_x.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 | |
| 9 #include "base/memory/singleton.h" | |
| 10 #include "base/message_loop/message_loop.h" | |
| 11 #include "ui/events/x/device_data_manager_x11.h" | |
| 12 | |
| 13 namespace { | |
| 14 | |
| 15 bool IsXI2Available() { | |
| 16 #if defined(USE_AURA) | |
| 17 return ui::DeviceDataManagerX11::GetInstance()->IsXInput2Available(); | |
| 18 #else | |
| 19 return false; | |
| 20 #endif | |
| 21 } | |
| 22 | |
| 23 } | |
| 24 | |
| 25 namespace ui { | |
| 26 | |
| 27 DeviceListCacheX::DeviceListCacheX() { | |
| 28 } | |
| 29 | |
| 30 DeviceListCacheX::~DeviceListCacheX() { | |
| 31 std::map<Display*, XDeviceList>::iterator xp; | |
| 32 for (xp = x_dev_list_map_.begin(); xp != x_dev_list_map_.end(); xp++) { | |
| 33 if (xp->second.devices) | |
| 34 XFreeDeviceList(xp->second.devices); | |
| 35 } | |
| 36 std::map<Display*, XIDeviceList>::iterator xip; | |
| 37 for (xip = xi_dev_list_map_.begin(); xip != xi_dev_list_map_.end(); xip++) { | |
| 38 if (xip->second.devices) | |
| 39 XIFreeDeviceInfo(xip->second.devices); | |
| 40 } | |
| 41 } | |
| 42 | |
| 43 DeviceListCacheX* DeviceListCacheX::GetInstance() { | |
| 44 return Singleton<DeviceListCacheX>::get(); | |
| 45 } | |
| 46 | |
| 47 void DeviceListCacheX::UpdateDeviceList(Display* display) { | |
| 48 XDeviceList& new_x_dev_list = x_dev_list_map_[display]; | |
| 49 if (new_x_dev_list.devices) | |
| 50 XFreeDeviceList(new_x_dev_list.devices); | |
| 51 new_x_dev_list.devices = XListInputDevices(display, &new_x_dev_list.count); | |
| 52 | |
| 53 XIDeviceList& new_xi_dev_list = xi_dev_list_map_[display]; | |
| 54 if (new_xi_dev_list.devices) | |
| 55 XIFreeDeviceInfo(new_xi_dev_list.devices); | |
| 56 new_xi_dev_list.devices = IsXI2Available() ? | |
| 57 XIQueryDevice(display, XIAllDevices, &new_xi_dev_list.count) : NULL; | |
| 58 } | |
| 59 | |
| 60 const XDeviceList& DeviceListCacheX::GetXDeviceList(Display* display) { | |
| 61 XDeviceList& x_dev_list = x_dev_list_map_[display]; | |
| 62 // Note that the function can be called before any update has taken place. | |
| 63 if (!x_dev_list.devices && !x_dev_list.count) | |
| 64 x_dev_list.devices = XListInputDevices(display, &x_dev_list.count); | |
| 65 return x_dev_list; | |
| 66 } | |
| 67 | |
| 68 const XIDeviceList& DeviceListCacheX::GetXI2DeviceList(Display* display) { | |
| 69 XIDeviceList& xi_dev_list = xi_dev_list_map_[display]; | |
| 70 if (!xi_dev_list.devices && !xi_dev_list.count) { | |
| 71 xi_dev_list.devices = XIQueryDevice(display, XIAllDevices, | |
| 72 &xi_dev_list.count); | |
| 73 } | |
| 74 return xi_dev_list; | |
| 75 } | |
| 76 | |
| 77 } // namespace ui | |
| 78 | |
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