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
9namespace device {
10
11HidDeviceFilter::HidDeviceFilter()
12    : vendor_id_set_(false),
13      product_id_set_(false),
14      usage_page_set_(false),
15      usage_set_(false) {
16}
17
18HidDeviceFilter::~HidDeviceFilter() {
19}
20
21void HidDeviceFilter::SetVendorId(uint16_t vendor_id) {
22  vendor_id_set_ = true;
23  vendor_id_ = vendor_id;
24}
25
26void HidDeviceFilter::SetProductId(uint16_t product_id) {
27  product_id_set_ = true;
28  product_id_ = product_id;
29}
30
31void HidDeviceFilter::SetUsagePage(uint16_t usage_page) {
32  usage_page_set_ = true;
33  usage_page_ = usage_page;
34}
35
36void HidDeviceFilter::SetUsage(uint16_t usage) {
37  usage_set_ = true;
38  usage_ = usage;
39}
40
41bool 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
76bool 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