hellotestappui.cpp

symbian os下的helloworld

/*
============================================================================
 Name		: hellotestAppUi.cpp
 Author	  : 
 Copyright   : Your copyright notice
 Description : ChellotestAppUi implementation
============================================================================
*/

// INCLUDE FILES
#include <avkon.hrh>
#include <aknmessagequerydialog.h>
#include <aknnotewrappers.h>
#include <stringloader.h>
#include <f32file.h>
#include <s32file.h>
#include <hlplch.h>

#include <hellotest_0xEB744BB1.rsg>

#include "hellotest_0xEB744BB1.hlp.hrh"
#include "hellotest.hrh"
#include "hellotest.pan"
#include "hellotestApplication.h"
#include "hellotestAppUi.h"
#include "hellotestAppView.h"

_LIT( KFileName, "C:\\private\\EB744BB1\\hellotest.txt" );
_LIT( KText, "Hello World!");

// ============================ MEMBER FUNCTIONS ===============================


// -----------------------------------------------------------------------------
// ChellotestAppUi::ConstructL()
// Symbian 2nd phase constructor can leave.
// -----------------------------------------------------------------------------
//
void ChellotestAppUi::ConstructL()
	{
	// Initialise app UI with standard value.
	BaseConstructL(CAknAppUi::EAknEnableSkin);

	// Create view object
	iAppView = ChellotestAppView::NewL( ClientRect() );

	// Create a file to write the text to
	RFs fsSession;
	User::LeaveIfError(fsSession.Connect());
	CleanupClosePushL( fsSession );

	TInt err = fsSession.MkDirAll(KFileName);
	if ( (KErrNone != err) && (KErrAlreadyExists != err) )
		{
		CleanupStack::PopAndDestroy(1); //  fsSession
		return;
		}
	
	RFile file;
	err = file.Replace(fsSession, KFileName, EFileWrite );
	CleanupClosePushL( file );
	if ( KErrNone != err )
		{
		CleanupStack::PopAndDestroy(2); // file, fsSession
		return;
		}
	
	RFileWriteStream outputFileStream( file );
	CleanupClosePushL( outputFileStream );
	outputFileStream << KText;

	CleanupStack::PopAndDestroy(3); // outputFileStream, file, fsSession

	}
// -----------------------------------------------------------------------------
// ChellotestAppUi::ChellotestAppUi()
// C++ default constructor can NOT contain any code, that might leave.
// -----------------------------------------------------------------------------
//
ChellotestAppUi::ChellotestAppUi()
	{
	// No implementation required
	}

// -----------------------------------------------------------------------------
// ChellotestAppUi::~ChellotestAppUi()
// Destructor.
// -----------------------------------------------------------------------------
//
ChellotestAppUi::~ChellotestAppUi()
	{
	if ( iAppView )
		{
		delete iAppView;
		iAppView = NULL;
		}

	}

// -----------------------------------------------------------------------------
// ChellotestAppUi::HandleCommandL()
// Takes care of command handling.
// -----------------------------------------------------------------------------
//
void ChellotestAppUi::HandleCommandL( TInt aCommand )
	{
	switch( aCommand )
		{
		case EEikCmdExit:
		case EAknSoftkeyExit:
			Exit();
			break;

		case ECommand1:
			{
			
			// Load a string from the resource file and display it
			HBufC* textResource = StringLoader::LoadLC( R_COMMAND1_TEXT );
			CAknInformationNote* informationNote;

			informationNote = new ( ELeave ) CAknInformationNote;

			// Show the information Note with
			// textResource loaded with StringLoader.
			informationNote->ExecuteLD( *textResource );

			// Pop HBuf from CleanUpStack and Destroy it.
			CleanupStack::PopAndDestroy( textResource );
			}
			break;
		case ECommand2:
			{
			
			RFs fsSession;
			RFile rFile;
			
			// Connects a client process to the fileserver
			User::LeaveIfError(fsSession.Connect());
			CleanupClosePushL(fsSession);
			
			//Open file where the stream text is
			User::LeaveIfError(rFile.Open(fsSession,KFileName, EFileStreamText));//EFileShareReadersOnly));// EFileStreamText));
			CleanupClosePushL(rFile);
			
			// copy stream from file to RFileStream object
			RFileReadStream inputFileStream(rFile);
			CleanupClosePushL(inputFileStream);
			
			// HBufC descriptor is created from the RFileStream object.
			HBufC* fileData = HBufC::NewLC(inputFileStream, 32);

			CAknInformationNote* informationNote;

			informationNote = new ( ELeave ) CAknInformationNote;
			// Show the information Note
			informationNote->ExecuteLD( *fileData);			
			
			// Pop loaded resources from the cleanup stack
			CleanupStack::PopAndDestroy(4); // filedata, inputFileStream, rFile, fsSession
			fsSession.Close();
			}
			break;
		case EHelp:
			{
			
			CArrayFix<TCoeHelpContext>* buf = CCoeAppUi::AppHelpContextL();
			HlpLauncher::LaunchHelpApplicationL(iEikonEnv->WsSession(), buf);
			}
			break;
		case EAbout:
			{
			
			CAknMessageQueryDialog* dlg = new (ELeave)CAknMessageQueryDialog(); 
			dlg->PrepareLC(R_ABOUT_QUERY_DIALOG);
			HBufC* title = iEikonEnv->AllocReadResourceLC(R_ABOUT_DIALOG_TITLE);
			dlg->QueryHeading()->SetTextL(*title);
			CleanupStack::PopAndDestroy(); //title
			HBufC* msg = iEikonEnv->AllocReadResourceLC(R_ABOUT_DIALOG_TEXT);
			dlg->SetMessageTextL(*msg);
			CleanupStack::PopAndDestroy(); //msg
			dlg->RunLD(); 
			}
			break;
		default:
			Panic( EhellotestUi );
			break;
		}
	}
// -----------------------------------------------------------------------------
//  Called by the framework when the application status pane
//  size is changed.  Passes the new client rectangle to the
//  AppView
// -----------------------------------------------------------------------------
//
void ChellotestAppUi::HandleStatusPaneSizeChange()
	{
	iAppView->SetRect( ClientRect() );
	} 

CArrayFix<TCoeHelpContext>* ChellotestAppUi::HelpContextL() const
	{
	#warning "Please see comment about help and UID3..."
	// Note: help will not work if the application uid3 is not in the
	// protected range.  The default uid3 range for projects created
	// from this template (0xE0000000 - 0xEFFFFFFF) are not in the protected range so they
	// can be self signed and installed on the device during testing.
	// Once you get your official uid3 from Symbian Ltd. and find/replace
	// all occurrences of uid3 in your project, the context help will
	// work.
	CArrayFixFlat<TCoeHelpContext>* array = new(ELeave)CArrayFixFlat<TCoeHelpContext>(1);
	CleanupStack::PushL(array);
	array->AppendL(TCoeHelpContext(KUidhellotestApp, KGeneral_Information));
	CleanupStack::Pop(array);
	return array;
	}

// End of File