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IlvMultipleUserAccessor Class Reference

Base class for accessors that represent several attributes. More...

#include <ilviews/protos/useracc.h>

Inheritance diagram for IlvMultipleUserAccessor:
IlvUserAccessor IlvAccessor

Public Member Functions

 IlvMultipleUserAccessor (const char *name, IlUShort count, const char **names, IlvValueTypeClass **types)
 Initializes a new multiple accessor. More...
 
- Public Member Functions inherited from IlvUserAccessor
 IlvUserAccessor (const char *name, const IlvValueTypeClass *type, IlUInt flags=0)
 Constructor. More...
 
virtual void initialize (const IlvAccessorHolder *object)
 Attachment method to an IlvAccessorHolder. More...
 
virtual IlBoolean isOutputValue (const IlSymbol *) const
 Queries if the accessor is an output accessor. More...
 
IlBoolean isPrivate () const
 Checks the private status. More...
 
IlBoolean isRuntime () const
 Checks the RunTime status. More...
 
void setPrivate (IlBoolean val)
 Sets the Private flag of this accessor. More...
 
void setRuntime (IlBoolean runTime)
 Sets the RunTime flag of this accessor. More...
 
- Public Member Functions inherited from IlvAccessor
 IlvAccessor (const char *name, IlvValueTypeClass *type)
 Creates a new accessor of name name and type type.
 
virtual IlBoolean changeValues (IlvAccessorHolder *object, const IlvValue *values, IlUShort count)
 Called by the method IlvAccessible::changeValues() for each IlvAccessor attached to the IlvAccessorHolder.
 
const IlSymbolgetName () const
 Returns the name of the accessor. More...
 
IlvValueTypeClassgetType () const
 Returns the type of the accessor. More...
 
virtual IlBoolean isOutputAccessor (IlBoolean &inputAndOutput)
 Queries if the accessor is an output accessor. More...
 
virtual void queryValues (const IlvAccessorHolder *object, IlvValue *values, IlUShort count) const
 Called by the method IlvAccessible::queryValues() for each IlvAccessor attached to the IlvAccessorHolder.
 
void setName (const IlSymbol *name)
 Sets the name of the accessor. More...
 

Protected Member Functions

virtual IlBoolean changeValue (IlvAccessorHolder *, const IlvValue &)
 Called by the method IlvAccessible::changeValue() for each IlvAccessor attached to the IlvAccessorHolder.
 
virtual void getAccessors (const IlSymbol *const **, const IlvValueTypeClass *const **, IlUInt &) const
 Returns the names and types of the values handled by this accessor. More...
 
virtual IlShort matchValues (const IlvAccessorHolder *, const IlvValue *, IlUShort, IlvValue *=0) const
 Returns the number of values that are handled by the accessor in the values array of length count. More...
 
virtual IlvValuequeryValue (const IlvAccessorHolder *, IlvValue &) const
 Called by the method IlvAccessible::queryValue() for each IlvAccessor attached to the IlvAccessorHolder.
 
- Protected Member Functions inherited from IlvUserAccessor
virtual IlUInt compareValues (const IlvAccessorHolder *object, const IlvAccessible *ref, IlvValue *values, IlUShort count, IlvValueArray &diffs) const
 Compares the values in ref and object and returns the differing values. More...
 
IlBoolean getValue (IlvValue &val, const IlvAccessorHolder *object, IlvDisplay *display, IlvValueTypeClass *typeClass=0, IlSymbol *typeVal=0, const IlvValue *arg=0) const
 Evaluates a parameter of a user accessor. More...
 

Detailed Description

Base class for accessors that represent several attributes.

Library: ilvproto

IlvMultipleUserAccessor is used as a base class for accessors that respond to changes of several values at the same time. This class is not used directly; only its subclasses are useful to designers of prototypes.

See also
IlvMultipleAccessor, IlvXYChartAccessor.

Constructor & Destructor Documentation

IlvMultipleUserAccessor::IlvMultipleUserAccessor ( const char *  name,
IlUShort  count,
const char **  names,
IlvValueTypeClass **  types 
)

Initializes a new multiple accessor.

The changeValues() and queryValues() methods of this accessor are called when several of the values specified by names and types are changed or queried in a single call to changeValues() or queryValues() on the accessor holder.

Member Function Documentation

virtual void IlvMultipleUserAccessor::getAccessors ( const IlSymbol *const **  accessors,
const IlvValueTypeClass *const **  types,
IlUInt count 
) const
protectedvirtual

Returns the names and types of the values handled by this accessor.

Returns
The names and types of the values handled by this accessor. The base class implementation adds only the name and type of this accessor to the accessors and types lists, but subclasses (for example IlvMultipleAccessor) may add several names and types to signal that the accessor can respond to requests for several values.

Reimplemented from IlvAccessor.

virtual IlShort IlvMultipleUserAccessor::matchValues ( const IlvAccessorHolder object,
const IlvValue values,
IlUShort  count,
IlvValue matchingValues = 0 
) const
protectedvirtual

Returns the number of values that are handled by the accessor in the values array of length count.

The matching values are copied to the matchingValues array, which must have a length of at least count. This method is called by the changeValue()[s]/queryValue()[s] methods of the IlvAccessorHolder class to determine which IlvAccessor objects respond to a request for a set of value names. All the accessors that return a non-null count of matching values will be called by the IlvAccessorHolder, with the matching values as arguments. The base class implementation looks for a value corresponding to the accessor name given in values and copies it to matchingValues. Subclasses of IlvAccessor (for example IlvMultipleAccessor) may match several values.

Reimplemented from IlvAccessor.


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