downloadentity.h

SYMBIAN S60 2ND列车时刻表软件

#ifndef DOWNLOADENTITY_H_
#define DOWNLOADENTITY_H_
#include <e32base.h>
#include <f32file.h>
#include <aknprogressdialog.h>
#include <aknwaitdialog.h> 
#include "MDownloadManagerObserver.h"
#include "HttpClientEngine.h"

// CLASS DECLARATION
#ifndef WEBCLIENTOBSERVER_H
#define WEBCLIENTOBSERVER_H
/**
* MWebClientObserver
* CHttpClientEngine passes events and responses body data with this interface. 
* An instance of this class must be provided for construction of CHttpClientEngine.
*/

class MWebClientObserver 
    {
    public:
		virtual void ClientEvent( const TDesC& aEventDescription ) = 0;
		virtual void ClientHeaderReceived( const TDesC& aHeaderData ) = 0;
		virtual void ClientBodyReceived( const TDesC8& aBodyData ) = 0;
		virtual void ClientSuccess() = 0;
        virtual void ClientFailed() = 0;   
    };

#endif


class CDownloadEntity : public CBase
						,public MWebClientObserver
						,public MProgressDialogCallback
{
public:
	static CDownloadEntity* NewL(RFs& aFs,MDownloadManagerObserver&	aObserver  );
	~CDownloadEntity();
	TBool iUsed;
public:
	void ConstructL();
	CDownloadEntity( RFs& aFs, MDownloadManagerObserver&	aObserver );
	void Initialize(const TDesC8& aUrl, const TDesC& aFileName);
public:
	TInt GetID();
	void Cancel();
public: // Functions from base classes
    void ClientEvent( const TDesC& aEventDescription );
    void ClientHeaderReceived( const TDesC& aHeaderData );
    void ClientBodyReceived( const TDesC8& aBodyData );	
	void ClientSuccess();
	void ClientFailed();
private:
	void DialogDismissedL( TInt aButtonId );
	
	MDownloadManagerObserver&	iObserver;
	CHttpClientEngine* 			iHttpClient;
	HBufC*					iFileName;
	HBufC8*					iUrl;
	RFs						iFs;
	TInt					iSize;
    CAknWaitDialog*         iWaitDialog;	
};

#endif /*DOWNLOADENTITY_H_*/