todo.cpp

symbian手机上记事本的程序

#include"ToDo.h"
#include"ToDoList.h"

const TDesC& CToDo::GetSubject() const
	{
	return *iSubject; //因为定义的是指针类型，而返回的是引用，所以要加*
	}

void CToDo::SetSubject(const TDesC& aSubject)
	{
	delete iSubject;
	iSubject = aSubject.AllocL();
	}

const TDesC& CToDo::Location() const
    {
    return *iLocation;
    }

void CToDo::SetLocation(const TDesC& aLocation)
	{
	delete iLocation;
	iLocation = aLocation.AllocL();
	}
const TDesC& CToDo::Comments() const
	{
	return *iComments;
	}
void CToDo::SetComments(const TDesC& aComments)
	{
	delete iComments;
	iComments = HBufC::NewL(aComments.Length());
	*iComments = aComments;
	}
const TDesC& CToDo::Person() const
	{
	return iPerson;
	}
void CToDo::SetPerson(const TDesC& aPerson) 
	{
	iPerson = aPerson;
	}
const TInt16 CToDo::Alarm() const
	{
	return iAlarm;
	}
void CToDo::SetAlarm(TInt16 aAlarm)
	{
	iAlarm = aAlarm;
	}
const TInt CToDo::Priority() const
	{
	return iPriority;
	}
void CToDo::SetPriority(TInt16 aPriority)
	{
	iPriority = aPriority;
	}
const TDateTime CToDo::Time() const
	{
	return iTime;
	}
void CToDo::SetTime(TDateTime aTime)
	{
	iTime = aTime;
	}
const TDateTime CToDo::Date() const
	{
	return iDate;
	}
void CToDo::SetDate(TDateTime aDate)
	{
	iDate = aDate;
	}
    
CToDo* CToDo::NewLC(const TDesC& aSubject, TDateTime& aTime, TDateTime& aDate, const TDesC& aLocation, const TDesC& aPerson,
					TInt16 aAlarm, TInt16 aPriority, const TDesC& aComments)
	{
	CToDo* self = new(ELeave)CToDo(aTime, aDate,aPerson,aAlarm, aPriority);
	CleanupStack::PushL(self);
	self->ConstructL(aSubject, aLocation, aComments);
	return self;
	}

CToDo* CToDo::NewL(const TDesC& aSubject, TDateTime& aTime, TDateTime& aDate, const TDesC& aLocation, const TDesC& aPerson,
				   TInt16 aAlarm, TInt16 aPriority, const TDesC& aComments)
	{
	CToDo* self = CToDo::NewLC(aSubject, aTime, aDate, aLocation, aPerson, aAlarm,aPriority,aComments);
	CleanupStack::Pop(self);
	return self;
	}

CToDo* CToDo::NewLC(RReadStream& aStream)
	{
	CToDo* self = new(ELeave)CToDo;
	CleanupStack::PushL(self);
	aStream >> *self;
	return self;
	}

CToDo* CToDo::NewL(RReadStream& aStream)
	{
	CToDo* self = CToDo::NewLC(aStream);
	CleanupStack::Pop(self);
	return self;
	}

CToDo* CToDo::NewLC()
	{
	CToDo* todo = new(ELeave)CToDo;
	CleanupStack::PushL(todo);
	todo->ConstructL();
	return todo;
	}

CToDo* CToDo::NewL()
	{
	CToDo* todo = CToDo::NewLC();
	CleanupStack::Pop(todo);
	return todo;
	}
CToDo::~CToDo()
	{
	delete iSubject;
	delete iLocation;
	delete iComments;
	}

void CToDo::ExternalizeL( RWriteStream& aStream ) const
	{
	TInt32 len = iSubject->Des().MaxLength();// tbufc 中没有最大值，所以用des调用
	aStream << len;
	aStream << *iSubject;
	
	TTime time1(iTime);
	TInt64 number1 = time1.Int64();
	TBuf<20> bufValue;
	bufValue.AppendNum( number1 );
	aStream << bufValue;
	
	TTime time2(iDate);
	TInt64 number2 = time2.Int64();
	bufValue.Zero();
	bufValue.AppendNum( number2 );
	aStream << bufValue;

	TInt32 len1 = iLocation->Des().MaxLength();
	aStream<< len1;
	aStream << *iLocation;

	aStream << iPerson;
	aStream.WriteInt16L(iAlarm);
	aStream.WriteInt16L(iPriority);

	TInt32 len2 = iComments->Des().MaxLength();
	aStream<< len2;
	aStream << *iComments;
 
	}

void CToDo::InternalizeL( RReadStream& aStream )
	{
	TInt32 len = 0;//从流中读数据时，是按顺序读的，哪个先写进去，哪个就先读出来，跟len没关系
	aStream >> len;
	delete iSubject;
	iSubject = NULL;
	iSubject = HBufC::NewL( aStream, len );
	
	TInt64 number1 = 0;
	TBufC<20> bufValue;
	TPtr ptrValue( bufValue.Des() );
	aStream >> ptrValue;
	TLex lex( bufValue );
	lex.Val(number1);
	TTime time1( number1 );
	iTime = time1.DateTime();

	TInt64 number2 = 0;
	TBufC<20> bufValue2;
	ptrValue.Set( bufValue.Des() );
	aStream >> ptrValue;
	lex = bufValue;
	lex.Val( number2 );
	TTime time2( number2 );
	iDate = time2.DateTime();

	TInt32 len1 = 0;
	aStream >> len1;
	delete iLocation;
	iLocation = NULL;
	iLocation = HBufC::NewL(aStream, len1);

	TPtr personPtr = iPerson.Des();
	aStream >> personPtr;

	iAlarm = aStream.ReadInt16L();
	iPriority = aStream.ReadInt16L();

	TInt32 len2 = 0;
	aStream >> len2;
	delete iComments;
	iComments = NULL;
	iComments = HBufC::NewL(aStream, len2);
	
    	}
CToDo::CToDo(TDateTime& aTime,TDateTime& aDate, const TDesC& aPerson,TInt16 aAlarm, TInt16 aPriority)
			:iTime(aTime),iDate(aDate),iPerson(aPerson),iAlarm(aAlarm), iPriority(aPriority)
	{
	}

void CToDo::ConstructL(const TDesC& aSubject, const TDesC& aLocation, const TDesC& aComments)
	{
	iSubject = HBufC::NewL(aSubject.Length());  //hbufc 可以使用带RReadStream参数的NewL或NewLC从文件输入流中构建对象 
	*iSubject = aSubject;// 用hbufc在流中建立对象
 	// iName = aName.AllocL();
	iLocation = aLocation.AllocL();
	iComments = aComments.AllocL();
	}

void CToDo::ConstructL()
	{
	iSubject = HBufC::NewL(1);
	*iSubject = _L("");
	
	iLocation = HBufC::NewL(1);
	*iLocation = _L("");
	
	iComments = HBufC::NewL(1);
	*iComments = _L("");
	}
/*void CToDo::Print()
	{
	console->Printf(_L("the subject is %S\n "), iSubject);
	console->Printf(_L("the time is %d-%d-%d \n"), iTime.Year(),iTime.Month(), iTime.Day());
	console->Printf(_L("the time is %d:%d:%d \n"), iDate.Hour(),iDate.Minute(), iDate.Second());
	console->Printf(_L("the location is %S\n"), iLocation);
	console->Printf(_L("the person is %S\n"), iPerson);
	console->Printf(_L("the alarm is %S\n"), iAlarm);
	console->Printf(_L("the priority is %S\n"), iPriority);
	console->Printf(_L("the comments is %S\n"), iComments);
	}
*/