#include <disti_metadata.h>

Inheritance diagram for DistiAttributeBase:

Public Types
typedef unsigned int	CallbackID
	Type for unique identifiers.

Public Member Functions
	DistiAttributeBase (CallbackMethodCallerBase *callback, const AttributeName &name, bool localStorage)

virtual DistiAttributeBase &	operator= (const DistiAttributeBase &oldClass)

const AttributeName &	Name () const

AttributeName &	Name ()

bool	LocalStorage () const

virtual bool	Copyable () const

virtual bool	OkToWrite () const

virtual bool	ValueChanged ()

virtual void	ResetValueChanged ()

virtual std::string	ValueString ()

virtual void	ValueString (const std::string &s)

virtual long	ValueInt ()

virtual void	ValueInt (long val)

virtual double	ValueFloat ()

virtual void	ValueFloat (double val)

virtual void	CallCallback ()

virtual std::ostream &	WriteValue (std::ostream &outstr)=0

virtual std::istream &	ReadValue (std::istream &instr)=0

virtual bool	operator== (const DistiAttributeBase &r)

template<class valType >
DistiAttributeBase &	operator<< (const valType &val)

template<class valType >
DistiAttributeBase &	operator>> (valType &val)

virtual CallbackID	RegisterObserver (AttributeObserver *observer)

virtual void	UnregisterObserver (CallbackID id)

virtual void	NotifyObservers ()

Public Member Functions inherited from WeakReferenceableMixin
void	AddWeakReference (WeakReference *weakRef)

void	NotifyWeakReferenceDestroyed (WeakReference *ref)

Public Attributes
AttributeName	_name

CallbackMethodCallerBase *	_callback

bool	_localStorage

Friends
std::ostream &	operator<< (std::ostream &outstr, const DistiAttributeBase &attribute)

std::istream &	operator>> (std::istream &instr, DistiAttributeBase &attribute)

Additional Inherited Members
Protected Member Functions inherited from WeakReferenceableMixin
	WeakReferenceableMixin (void)

virtual	~WeakReferenceableMixin ()

Protected Attributes inherited from WeakReferenceableMixin
DynamicArray< WeakReference * > *	_weakRefs

Detailed Description

This is the base class for all Disti Attributes.

Constructor & Destructor Documentation

DistiAttributeBase	(	CallbackMethodCallerBase *	callback,
		const AttributeName &	name,
		bool	localStorage
	)

Constructor

Parameters

callback	The method to call when the value changes. A duplicate of the CallbackMethodCallerBase is created and stored internally.
name	The name of the attribute
localStorage	True if this DistiAttribute contains actual storage, rather than just a pointer to somebody elses storage

Member Function Documentation

virtual void CallCallback ( )

virtual

Calls callback CallType3 if it has been set

virtual bool Copyable ( ) const

virtual

Its not a word, but it means able to be copied This should return true if it makes sense for the data to be copied. By default, will only copy if it contains local storage

Reimplemented in DistiAttribute< T >, DistiAttribute< std::string >, DistiAttribute< Vertex >, and DistiAttribute< unsigned char >.

bool LocalStorage ( ) const

Returns true if this object has local storage

const AttributeName& Name ( ) const

Returns the name of this object

AttributeName& Name ( )

Returns the name of this object

virtual void NotifyObservers ( )

virtual

Triggers all observers to have their callbacks called. Typically called by the class that owns the DistiAttributeBase

Reimplemented in DistiAttributeAlias.

virtual bool OkToWrite ( ) const

virtual

Returns true if this object is ready to have its WriteValue() called This SHOULD be overriden by any derived objects that may not be ready to write at any point. The reason for this is the data is often written "NAME: VALUE". If Value is not available, we don't want to write "NAME: " first, so before writting "NAME: ", OkToWrite() can be called to see if it will have a valid value

Reimplemented in DistiAttributeProperty< containerT, T, SetArgT >, DistiAttributeHomogeneousItemArray< T >, DistiAttributeStdVector< T, showIndex >, DistiAttributeDynamicArray< T, showIndex >, DistiAttributeAlias, DistiAttributeNeverWrite< T >, GlsTextCharAttr, DistiAttributeVertexArray< Vertex >, DistiAttributeVertexArray< T >, DistiAttributeVertexArray< Vector >, DistiAttributeStdMap< Map_t >, DistiAttributeDictionaryAttributeSibling, DistiAttributeDictionaryAttribute, DistiAttributeStdString, DistiAttributeEncodedStdString, DistiAttributeString, DistiAttributeConnectionGlsAngularScaleDataArray, TexturePalette::DistiAttributeTexturePalette_V21, DistiAttributeConnectionGlsLinearScaleDataArray, DistiAttributeColorMaterialModeEnum< containerClass >, DistiAttributeMeshFaceArray, DistiAttributeDoubleArray, and DistiAttributeFloatArray.

DistiAttributeBase& operator<< ( const valType & val )

inline

Allow for generic access to some data types. This will NOT work for types which: s << val does not work. In general if the WriteValue is overridden, then it probably will not work.

virtual DistiAttributeBase& operator= ( const DistiAttributeBase & oldClass )

virtual

This will perform the copy using ReadValue() and WriteValue() It can be overridden by any dervied classes to do a smarter more efficent copy.

Reimplemented in DistiAttributeEnumDirect< enumType >, DistiAttributeEnumDirect< glsImageCodec >, DistiAttributeEnum< containerClass, setType, getType >, DistiAttributeEnum< GlsLightSource, int, int >, DistiAttributeEnum< GlsSphere, glsSphereMapping_e, glsSphereMapping_e >, DistiAttributeEnum< containerClass, const int, int >, DistiAttributeEnum< GlsEyePoint, GlsEyePoint::FovConstraintType, GlsEyePoint::FovConstraintType >, DistiAttributeEnum< containerClass, int, int >, DistiAttribute< T >, DistiAttribute< std::string >, DistiAttribute< Vertex >, DistiAttribute< unsigned char >, TexturePalette::DistiAttributeTexturePalette, DistiAttributeViewDataArray, DistiAttributeFilePathClass, and DistiAttributeUCharOrBool.

virtual bool operator== ( const DistiAttributeBase & r )

virtual

Compares name and value This can be overriden to improve speed.

Reimplemented in DistiAttributeAlias, DistiAttributeVertexArray< Vertex >, DistiAttributeVertexArray< T >, DistiAttributeVertexArray< Vector >, DistiAttribute< T >, DistiAttribute< std::string >, DistiAttribute< Vertex >, and DistiAttribute< unsigned char >.

DistiAttributeBase& operator>> ( valType & val )

inline

Allows for generic access to some data types. This will NOT work for types which: s >> val does not work. In general if the ReadValue is overridden, then it probably will not work.

virtual std::istream& ReadValue ( std::istream & instr )

pure virtual

Pure virtual because this is specific to the data type to be contained. This should be overridden to read the data from the stream. The value read could be encoded for being read from a file as a single string, or have its own special encoding specific to its underlying type. In the case of attribute strings, this will be the GLS file encoded value. The user is responsible for encoding the value themselves, or using WriteValue which should perform encoding to maintain symmetry.

Implemented in DistiAttributeEnumDirect< enumType >, DistiAttributeEnumDirect< glsImageCodec >, DistiEmptyAttribute, DistiAttributeProperty< containerT, T, SetArgT >, DistiAttributeHomogeneousItemArray< T >, DistiAttributeStdVector< T, showIndex >, DistiAttributeDynamicArray< T, showIndex >, DistiAttributeAlias, DistiAttributeTexturePointArray, DistiAttributeEnum< containerClass, setType, getType >, DistiAttributeEnum< GlsLightSource, int, int >, DistiAttributeEnum< GlsSphere, glsSphereMapping_e, glsSphereMapping_e >, DistiAttributeEnum< containerClass, const int, int >, DistiAttributeEnum< GlsEyePoint, GlsEyePoint::FovConstraintType, GlsEyePoint::FovConstraintType >, DistiAttributeEnum< containerClass, int, int >, GlsTextCharAttr, DistiAttributeVertexArray< Vertex >, DistiAttributeVertexArray< T >, DistiAttributeVertexArray< Vector >, DistiAttributeStdMap< Map_t >, DistiAttribute< T >, DistiAttribute< std::string >, DistiAttribute< Vertex >, DistiAttribute< unsigned char >, DistiAttributeDictionaryAttributeSibling, DistiAttributeDictionaryAttribute, DistiAttributeLocation, DistiAttributeStdString, DistiAttributeFixedString, DistiAttributeEncodedStdString, DistiAttributeEncodedString, DistiAttributeString, TexturePalette::DistiAttributeTexturePalette, DistiAttributeConnectionGlsAngularScaleDataArray, TexturePalette::DistiAttributeTexturePalette_V21, DistiAttributeConnectionGlsLinearScaleDataArray, DistiAttributeViewDataArray, DistiAttributeMeshFaceArray, DistiAttributeCWDRelativePath, DistiAttributeFilePathClass, DistiAttributeDoubleArray, DistiAttributeFloatArray, DistiAttributeUCharOrBool, DistiAttribute< T >, DistiAttribute< T >, DistiAttribute< T >, and DistiAttribute< T >.

virtual CallbackID RegisterObserver ( AttributeObserver * observer )

virtual

Register a callback that is called when the value of the attribute changes. If multiple oservers are registered, they will be notified in the order they registered. DistiAttributeBase takes ownership of the observer and will delete it.

Parameters

observer the observer to notify. It is automatically unregistered and destroyed when it becomes invalid.

Returns: an id that can be used to unregister the observer

Reimplemented in DistiAttributeAlias.

virtual void ResetValueChanged ( )

virtual

Saves the current value for later comparison by ValueChanged() This does nothing in the base class

Reimplemented in DistiAttributeAlias.

virtual void UnregisterObserver ( CallbackID id )

virtual

Unregister an observer

Parameters

id	the id returned when the observer was registered

Reimplemented in DistiAttributeAlias.

virtual bool ValueChanged ( )

virtual

Returns true if the object's value has changed since calling ResetValueChanged() However, it is not implmented in the base class and will always return true if not overridden

Reimplemented in DistiAttributeAlias.

virtual double ValueFloat ( )

virtual

Allows for faster access to floating-point types than the more generic stream operators. However, it is only faster if it is overridden.

Reimplemented in DistiAttributeProperty< containerT, T, SetArgT >, DistiAttributeAlias, DistiAttribute< T >, DistiAttribute< std::string >, DistiAttribute< Vertex >, and DistiAttribute< unsigned char >.

virtual void ValueFloat ( double val )

virtual

Allows for faster access to floating-point types than the more generic stream operator. However, it is only faster if it is overridden.

Reimplemented in DistiAttributeProperty< containerT, T, SetArgT >, DistiAttributeAlias, DistiAttribute< T >, DistiAttribute< std::string >, DistiAttribute< Vertex >, and DistiAttribute< unsigned char >.

virtual long ValueInt ( )

virtual

Allows for faster access to integer types than the more generic stream operators. However, it is only faster if it is overridden.

virtual void ValueInt ( long val )

virtual

Allows for faster access to integer types than the more generic stream operator. However, it is only faster if it is overridden.

virtual std::string ValueString ( )

virtual

Returns the std::string version of the attribute data. Here in the base class it uses WriteValue() If this particular attribute's underlying type is a string, this returns the unencoded value, suitable for users. If a file encoded value is required, call WriteValue instead.

Reimplemented in DistiAttributeProperty< containerT, T, SetArgT >, DistiAttributeAlias, DistiAttributeEncodedStdString, and DistiAttributeEncodedString.

virtual void ValueString ( const std::string & s )

virtual

Sets the value from a std::string argument. Here in the base class it uses ReadValue() If this particular attribute's underlying type is a string, this should not be set to an encoded value. If needing to set from an encoded value, call ReadValue instead.

Reimplemented in DistiAttributeProperty< containerT, T, SetArgT >, DistiAttributeAlias, DistiAttributeEncodedStdString, and DistiAttributeEncodedString.

virtual std::ostream& WriteValue ( std::ostream & outstr )

pure virtual

Pure virtual because this is specific to the data type to be contained. This should be overridden to write the data to the stream. The value written could be encoded for writing to a file as a single string, or have its own special encoding specific to its underlying type. In the case of attribute strings, this will be the GLS file encoded value. The user is responsible for decoding the value themselves, or using ReadValue which should perform decoding to maintain symmetry.

Implemented in DistiAttributeEnumDirect< enumType >, DistiAttributeEnumDirect< glsImageCodec >, DistiEmptyAttribute, DistiAttributeProperty< containerT, T, SetArgT >, DistiAttributeHomogeneousItemArray< T >, DistiAttributeStdVector< T, showIndex >, DistiAttributeDynamicArray< T, showIndex >, DistiAttributeAlias, DistiAttributeTexturePointArray, GlsTextCharAttr, DistiAttributeEnum< containerClass, setType, getType >, DistiAttributeEnum< GlsLightSource, int, int >, DistiAttributeEnum< GlsSphere, glsSphereMapping_e, glsSphereMapping_e >, DistiAttributeEnum< containerClass, const int, int >, DistiAttributeEnum< GlsEyePoint, GlsEyePoint::FovConstraintType, GlsEyePoint::FovConstraintType >, DistiAttributeEnum< containerClass, int, int >, DistiAttributeVertexArray< Vertex >, DistiAttributeVertexArray< T >, DistiAttributeVertexArray< Vector >, DistiAttributeStdMap< Map_t >, DistiAttribute< T >, DistiAttribute< std::string >, DistiAttribute< Vertex >, DistiAttribute< unsigned char >, DistiAttributeDictionaryAttributeSibling, DistiAttributeDictionaryAttribute, DistiAttributeLocation, DistiAttributeStdString, DistiAttributeFixedString, DistiAttributeEncodedStdString, DistiAttributeEncodedString, DistiAttributeString, TexturePalette::DistiAttributeTexturePalette, DistiAttributeConnectionGlsAngularScaleDataArray, TexturePalette::DistiAttributeTexturePalette_V21, DistiAttributeConnectionGlsLinearScaleDataArray, DistiAttributeViewDataArray, DistiAttributeMeshFaceArray, DistiAttributeCWDRelativePath, DistiAttributeFilePathClass, DistiAttributeDoubleArray, DistiAttributeFloatArray, DistiAttributeUCharOrBool, DistiAttribute< T >, and DistiAttribute< T >.

Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	outstr,
		const DistiAttributeBase &	attribute
	)

friend

Allows this class to send to a stream. Internally it uses WriteValue()

std::istream& operator>>	(	std::istream &	instr,
		DistiAttributeBase &	attribute
	)

friend

Allows this class to receive from a stream. Internally it uses ReadValue()

Member Data Documentation

CallbackMethodCallerBase* _callback

The callback which is called when the value of this object changes

bool _localStorage

_localStorage is true if this attributes data should be copied. It would typically be set false if the data is stored externally, and there is no need to copy the data through metadata. It is also used to determine if storage should be deleted.

AttributeName _name

The name of this attribute

The documentation for this class was generated from the following file:

disti_metadata.h

Public Types

Public Member Functions

Public Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation