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 "device/hid/hid_device_filter.h" 6 7 #include "device/hid/hid_device_info.h" 8 9 namespace device { 10 11 HidDeviceFilter::HidDeviceFilter() 12 : vendor_id_set_(false), 13 product_id_set_(false), 14 usage_page_set_(false), 15 usage_set_(false) { 16 } 17 18 HidDeviceFilter::~HidDeviceFilter() { 19 } 20 21 void HidDeviceFilter::SetVendorId(uint16_t vendor_id) { 22 vendor_id_set_ = true; 23 vendor_id_ = vendor_id; 24 } 25 26 void HidDeviceFilter::SetProductId(uint16_t product_id) { 27 product_id_set_ = true; 28 product_id_ = product_id; 29 } 30 31 void HidDeviceFilter::SetUsagePage(uint16_t usage_page) { 32 usage_page_set_ = true; 33 usage_page_ = usage_page; 34 } 35 36 void HidDeviceFilter::SetUsage(uint16_t usage) { 37 usage_set_ = true; 38 usage_ = usage; 39 } 40 41 bool HidDeviceFilter::Matches(const HidDeviceInfo& device_info) const { 42 if (vendor_id_set_) { 43 if (device_info.vendor_id != vendor_id_) { 44 return false; 45 } 46 47 if (product_id_set_ && device_info.product_id != product_id_) { 48 return false; 49 } 50 } 51 52 if (usage_page_set_) { 53 bool found_matching_collection = false; 54 for (std::vector<HidCollectionInfo>::const_iterator i = 55 device_info.collections.begin(); 56 i != device_info.collections.end() && !found_matching_collection; 57 ++i) { 58 const HidCollectionInfo& collection = *i; 59 if (collection.usage.usage_page != usage_page_) { 60 continue; 61 } 62 if (usage_set_ && collection.usage.usage != usage_) { 63 continue; 64 } 65 found_matching_collection = true; 66 } 67 if (!found_matching_collection) { 68 return false; 69 } 70 } 71 72 return true; 73 } 74 75 // static 76 bool HidDeviceFilter::MatchesAny( 77 const HidDeviceInfo& device_info, 78 const std::vector<HidDeviceFilter>& filters) { 79 for (std::vector<HidDeviceFilter>::const_iterator i = filters.begin(); 80 i != filters.end(); 81 ++i) { 82 if (i->Matches(device_info)) { 83 return true; 84 } 85 } 86 return false; 87 } 88 89 } // namespace device 90