| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_COMMON_H_ |
| #define CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_COMMON_H_ |
| |
| #include <assert.h> |
| |
| #include "base/logging.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/strings/string16.h" |
| #include "content/browser/geolocation/wifi_data_provider.h" |
| #include "content/browser/geolocation/wifi_polling_policy.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| // Converts a MAC address stored as an array of uint8 to a string. |
| base::string16 MacAddressAsString16(const uint8 mac_as_int[6]); |
| |
| // Base class to promote code sharing between platform specific wifi data |
| // providers. It's optional for specific platforms to derive this, but if they |
| // do polling behavior is taken care of by this base class, and all the platform |
| // need do is provide the underlying WLAN access API and polling policy. |
| // Also designed this way for ease of testing the cross-platform behavior. |
| class CONTENT_EXPORT WifiDataProviderCommon : public WifiDataProviderImplBase { |
| public: |
| // Interface to abstract the low level data OS library call, and to allow |
| // mocking (hence public). |
| class WlanApiInterface { |
| public: |
| virtual ~WlanApiInterface() {} |
| // Gets wifi data for all visible access points. |
| virtual bool GetAccessPointData(WifiData::AccessPointDataSet* data) = 0; |
| }; |
| |
| WifiDataProviderCommon(); |
| |
| // WifiDataProviderImplBase implementation |
| virtual void StartDataProvider() OVERRIDE; |
| virtual void StopDataProvider() OVERRIDE; |
| virtual bool GetData(WifiData* data) OVERRIDE; |
| |
| protected: |
| virtual ~WifiDataProviderCommon(); |
| |
| // Returns ownership. |
| virtual WlanApiInterface* NewWlanApi() = 0; |
| |
| // Returns ownership. |
| virtual WifiPollingPolicy* NewPollingPolicy() = 0; |
| |
| private: |
| // Runs a scan. Calls the callbacks if new data is found. |
| void DoWifiScanTask(); |
| |
| // Will schedule a scan; i.e. enqueue DoWifiScanTask deferred task. |
| void ScheduleNextScan(int interval); |
| |
| WifiData wifi_data_; |
| |
| // Whether we've successfully completed a scan for WiFi data. |
| bool is_first_scan_complete_; |
| |
| // Underlying OS wifi API. |
| scoped_ptr<WlanApiInterface> wlan_api_; |
| |
| // Controls the polling update interval. |
| scoped_ptr<WifiPollingPolicy> polling_policy_; |
| |
| // Holder for delayed tasks; takes care of cleanup. |
| base::WeakPtrFactory<WifiDataProviderCommon> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WifiDataProviderCommon); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_GEOLOCATION_WIFI_DATA_PROVIDER_COMMON_H_ |