examples/sfexamples/S60_weather/include/weatherinfo.h

00001 /*
00002 Copyright (c) 2002-2011 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
00003 
00004 Redistribution and use in source and binary forms, with or without
00005 modification, are permitted provided that the following conditions are met:
00006 
00007 * Redistributions of source code must retain the above copyright notice, this
00008   list of conditions and the following disclaimer.
00009 * Redistributions in binary form must reproduce the above copyright notice,
00010   this list of conditions and the following disclaimer in the documentation
00011   and/or other materials provided with the distribution.
00012 * Neither the name of Nokia Corporation nor the names of its contributors
00013   may be used to endorse or promote products derived from this software
00014   without specific prior written permission.
00015 
00016 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00017 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00018 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00019 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00020 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00021 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00022 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00023 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00024 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00025 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00026 
00027 Description:  
00028 */ 
00029 
00030 #ifndef __WEATHERINFO_H
00031 #define __WEATHERINFO_H
00032 
00033 #include <e32base.h>
00034 #include <in_sock.h>
00035 
00036 class MWeatherObserver
00037         {
00038 public:
00039         virtual void TemperatureReport(TDesC& aCity, TDesC& aTemperature)=0;
00040         virtual void TemperatureError(TDesC& aErrStr,TInt aErrCode)=0;
00041         };
00042 
00043 class CWeatherInfo : public CActive
00044         {
00045 public:
00046     static CWeatherInfo* NewL(MWeatherObserver& aObserver);
00047     ~CWeatherInfo();
00048     void GetTemperature(const TDesC& aCity);
00049 protected:
00050     // From CActive
00051         void RunL();
00052     void DoCancel();
00053 private:
00054         CWeatherInfo(MWeatherObserver& aObserver);      
00055         void Cleanup(TInt aError);
00056     enum TLoadStates
00057                 {
00058                 EInitializing,
00059             EResolvingName,
00060         EConnecting,
00061         ESending,
00062         EReceiving
00063                 };
00064 private:
00065     TInt iCommState;
00066     RSocketServ iSocketSrv;
00067     RSocket iSocket;
00068         RConnection iConnection;
00069     TNameEntry iNameEntry;
00070     RHostResolver iResolver;
00071     TBuf8<20000> iNetBuff;
00072     TSockXfrLength iLen;
00073     TBuf<16> iCityCode;
00074         MWeatherObserver& iObserver;
00075         };
00076 
00077 #endif
00078 

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