extensions/common/event_matcher.cc

   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 "base/callback.h"
   6
   7 #include "extensions/common/event_matcher.h"
   8
   9 #include "extensions/common/event_filtering_info.h"
  10
  11 namespace {
  12 const char kUrlFiltersKey[] = "url";
  13 const char kWindowTypesKey[] = "windowTypes";
  14
  15 const char* const kDefaultWindowTypes[] = {"normal", "panel", "popup"};
  16 }
  17
  18 namespace extensions {
  19
  20 const char kEventFilterServiceTypeKey[] = "serviceType";
  21
  22 EventMatcher::EventMatcher(scoped_ptr<base::DictionaryValue> filter,
  23                            int routing_id)
  24     : filter_(filter.Pass()),
  25       routing_id_(routing_id) {
  26 }
  27
  28 EventMatcher::~EventMatcher() {
  29 }
  30
  31 bool EventMatcher::MatchNonURLCriteria(
  32     const EventFilteringInfo& event_info) const {
  33   if (event_info.has_instance_id()) {
  34     return event_info.instance_id() == GetInstanceID();
  35   }
  36
  37   if (event_info.has_window_type()) {
  38     for (int i = 0; i < GetWindowTypeCount(); i++) {
  39       std::string window_type;
  40       if (GetWindowType(i, &window_type) &&
  41           window_type == event_info.window_type())
  42         return true;
  43     }
  44     return false;
  45   }
  46
  47   const std::string& service_type_filter = GetServiceTypeFilter();
  48   return service_type_filter.empty() ||
  49          service_type_filter == event_info.service_type();
  50 }
  51
  52 int EventMatcher::GetURLFilterCount() const {
  53   base::ListValue* url_filters = nullptr;
  54   if (filter_->GetList(kUrlFiltersKey, &url_filters))
  55     return url_filters->GetSize();
  56   return 0;
  57 }
  58
  59 bool EventMatcher::GetURLFilter(int i, base::DictionaryValue** url_filter_out) {
  60   base::ListValue* url_filters = nullptr;
  61   if (filter_->GetList(kUrlFiltersKey, &url_filters)) {
  62     return url_filters->GetDictionary(i, url_filter_out);
  63   }
  64   return false;
  65 }
  66
  67 int EventMatcher::HasURLFilters() const {
  68   return GetURLFilterCount() != 0;
  69 }
  70
  71 std::string EventMatcher::GetServiceTypeFilter() const {
  72   std::string service_type_filter;
  73   filter_->GetStringASCII(kEventFilterServiceTypeKey, &service_type_filter);
  74   return service_type_filter;
  75 }
  76
  77 int EventMatcher::GetInstanceID() const {
  78   int instance_id = 0;
  79   filter_->GetInteger("instanceId", &instance_id);
  80   return instance_id;
  81 }
  82
  83 int EventMatcher::GetWindowTypeCount() const {
  84   base::ListValue* window_type_filters = nullptr;
  85   if (filter_->GetList(kWindowTypesKey, &window_type_filters))
  86     return window_type_filters->GetSize();
  87   return arraysize(kDefaultWindowTypes);
  88 }
  89
  90 bool EventMatcher::GetWindowType(int i, std::string* window_type_out) const {
  91   base::ListValue* window_types = nullptr;
  92   if (filter_->GetList(kWindowTypesKey, &window_types)) {
  93     return window_types->GetString(i, window_type_out);
  94   }
  95   if (i >= 0 && i < static_cast<int>(arraysize(kDefaultWindowTypes))) {
  96     *window_type_out = kDefaultWindowTypes[i];
  97     return true;
  98   }
  99   return false;
 100 }
 101
 102 int EventMatcher::GetRoutingID() const {
 103   return routing_id_;
 104 }
 105
 106 }  // namespace extensions