ChangeTracker Class Reference

updates a variable when changes occur. More...

List of all members.

Public Member Functions
	ChangeTracker (bool *c=0)
	ChangeTracker (bool &c)
	ChangeTracker (unsigned int &c)
	ChangeTracker (unsigned int *c)
	ChangeTracker (bool &c, unsigned int &ci)
template<class T , class U >
bool	set (const T &oldval, const U &newval)
	returns wether this value is changed
template<class T , class U >
bool	update (T &val, const U &newval)
	Changes and returns wether this value is changed.
bool	set (const char *&, const char *&)
	specialisation for C-strings
bool	update (char *&, const char *&)
	specialisation for C-strings
bool	isChanged () const
unsigned int	changeId () const
void	setChanged (bool yn=true)
void	setChangeId (unsigned int c)
bool	hasBoolVar () const
bool	hasIntVar () const
const bool &	boolVar () const
	Don't call if !hasBoolVar().
const unsigned int &	intVar () const
	Don't call if !hasIntVar().
void	setVar (bool *m)
void	setVar (bool &m)
void	setVar (unsigned int *m)
void	setVar (unsigned int &m)
Protected Attributes
bool *	chgd
unsigned int *	chgid

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Detailed Description

updates a variable when changes occur.

Use if you need to keep track of whether a variable changes when it is assigned to another variable. Example: a 'not saved' flag in a UI. Also facilitates Giving unique change stamps.

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Constructor & Destructor Documentation

ChangeTracker::ChangeTracker

(

bool *

c = 0

)

[inline]

ChangeTracker::ChangeTracker

(

bool &

c

)

[inline]

ChangeTracker::ChangeTracker

(

unsigned int &

c

)

[inline]

ChangeTracker::ChangeTracker

(

unsigned int *

c

)

[inline]

ChangeTracker::ChangeTracker	(	bool &	c,
		unsigned int &	ci
	)			[inline]

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Member Function Documentation

const bool& ChangeTracker::boolVar

(

)

const [inline]

Don't call if !hasBoolVar().

unsigned int ChangeTracker::changeId

(

)

const [inline]

bool ChangeTracker::hasBoolVar

(

)

const [inline]

bool ChangeTracker::hasIntVar

(

)

const [inline]

const unsigned int& ChangeTracker::intVar

(

)

const [inline]

Don't call if !hasIntVar().

bool ChangeTracker::isChanged

(

)

const [inline]

template<class T , class U >

bool ChangeTracker::set	(	const T &	oldval,
		const U &	newval
	)			[inline]

returns wether this value is changed

bool ChangeTracker::set	(	const char *&	val,
		const char *&	newval
	)			[inline]

specialisation for C-strings

void ChangeTracker::setChanged

(

bool

yn = true

)

[inline]

void ChangeTracker::setChangeId

(

unsigned int

c

)

[inline]

void ChangeTracker::setVar

(

unsigned int &

m

)

[inline]

void ChangeTracker::setVar

(

bool *

m

)

[inline]

void ChangeTracker::setVar

(

unsigned int *

m

)

[inline]

void ChangeTracker::setVar

(

bool &

m

)

[inline]

bool ChangeTracker::update	(	char *&	val,
		const char *&	newval
	)			[inline]

specialisation for C-strings

template<class T , class U >

bool ChangeTracker::update	(	T &	val,
		const U &	newval
	)			[inline]

Changes and returns wether this value is changed.

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Member Data Documentation

bool* ChangeTracker::chgd [protected]

unsigned int* ChangeTracker::chgid [protected]