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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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