httpex.h

s60下的http客户端程序

// HttpEx.h
// ------------
//
// Copyright (c) 2000 Symbian Ltd.  All rights reserved.
//

////////////////////////////////////////////////////////////////////
// HttpEx 
// ----------
//
//
// The class definitions for the simple example application
// containing a single view with the text "Hello World !" drawn
// on it.
//
// The class definitions are:
//
// CHttpExApplication 
// CHttpExAppUi
// CHttpExAppView
// CHttpExDocument
//
//
////////////////////////////////////////////////////////////////////
#ifndef __HttpEx_H
#define __HttpEx_H

#include <coeccntx.h>

#include <eikenv.h>
#include <eikappui.h>
#include <eikapp.h>
#include <eikdoc.h>
#include <eikmenup.h>
#include <eiklabel.h>

#include <eikon.hrh>

#include <HttpEx.rsg>
#include "HttpEx.hrh"

#include <http\rhttpsession.h>
#include <http\mhttptransactioncallback.h>

////////////////////////////////////////////////////////////////////////
//
// CHttpExApplication
//
////////////////////////////////////////////////////////////////////////

class CHttpExApplication : public CEikApplication
	{
private: 
	           // Inherited from class CApaApplication
	CApaDocument* CreateDocumentL();
	TUid AppDllUid() const;
	};

////////////////////////////////////////////////////////////////////////
//
// CHttpExAppView
//
////////////////////////////////////////////////////////////////////////
class CHttpExAppView : public CCoeControl
    {
public:

	// logical state management
	enum TState
		{
		EReady,
		EFetching,
		EDone,
		EError,
		EStateLast
		};
	inline TState State() const; 
		
	TInt SetState(const TState aState);
	
	void ClearL();
	void SetTextL(const TDesC& aText);

	static CHttpExAppView* NewL(const TRect& aRect);
	CHttpExAppView();
	~CHttpExAppView();
    void ConstructL(const TRect& aRect);

private:
	// Inherited from CCoeControl
	void Draw(const TRect& aRect) const;
	inline TInt CountComponentControls() const;
	inline CCoeControl* ComponentControl(TInt aIndex) const;
	
private:
	const static TInt
		KSeparatorY = 50,
		KMargin = 10;
	TState iState;
	TPtrC iStateDesc;
	CEikLabel *iBody;
    };

inline CHttpExAppView::TState CHttpExAppView::State() const
	{
	return iState;
	}
	
inline TInt CHttpExAppView::CountComponentControls() const
	{
	return 1;
	}
	
inline CCoeControl* CHttpExAppView::ComponentControl(TInt /*aIndex*/) const
	{
	return iBody;
	}

////////////////////////////////////////////////////////////////////////
//
// CHttpExAppUi
//
////////////////////////////////////////////////////////////////////////
class CHttpExAppUi : public CEikAppUi, public MHTTPTransactionCallback
    {
public:
	// construction/destruction
    void ConstructL();
	~CHttpExAppUi();

    // methods from MHTTPTransactionCallback
	virtual void MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent& aEvent);
   	virtual TInt MHFRunError(TInt aError, RHTTPTransaction aTransaction, const THTTPEvent& aEvent);

private:
	// methods inherited from CEikAppUi
	void HandleCommandL(TInt aCommand);	
	void DynInitMenuPaneL(TInt aMenuId, CEikMenuPane* aMenuPane);

private:
	CHttpExAppView* iAppView;
    RHTTPSession iSession;
    
    void StartRequest(const TDesC8& aUri);
    
	// store only the first n bytes of response for this example
    TBuf<4096> iResponse;
	};


////////////////////////////////////////////////////////////////////////
//
// CHttpExDocument
//
////////////////////////////////////////////////////////////////////////
class CHttpExDocument : public CEikDocument
	{
public:
	static CHttpExDocument* NewL(CEikApplication& aApp);
	CHttpExDocument(CEikApplication& aApp);
	void ConstructL();
private: 
	           // Inherited from CEikDocument
	CEikAppUi* CreateAppUiL();
	};


#endif