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IlvGroupUserAccessor Class Reference

References all the subattributes of a group that have the same name. More...

#include <ilviews/protos/useracc.h>

Inheritance diagram for IlvGroupUserAccessor:
IlvUserAccessor IlvAccessor

Public Member Functions

 IlvGroupUserAccessor (const char *name, IlvValueTypeClass *type)
 Initializes a new group 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.
 
virtual void getAccessors (const IlSymbol *const **accessors, const IlvValueTypeClass *const **types, IlUInt &count) const
 Returns the names and types of the values handled by this accessor. More...
 
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 IlShort matchValues (const IlvAccessorHolder *object, const IlvValue *values, IlUShort count, IlvValue *matchingValues=0) const
 Returns the number of values that are handled by the accessor in the values array of length count. 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 IlUInt compareValues (const IlvAccessorHolder *, const IlvAccessible *, IlvValue *, IlUShort, IlvValueArray &) const
 Compares the values in ref and object and returns the differing values. 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
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

References all the subattributes of a group that have the same name.

Library: ilvproto

IlvGroupUserAccessor is used to change and/or query a value for all the nodes in a group. It defines a global value that is dispatched to all the nodes in the group. In a programming language, this accessor would be similar to a pointer to a collection of attributes of the same name.

See also
IlvGroupAccessor.

Constructor & Destructor Documentation

IlvGroupUserAccessor::IlvGroupUserAccessor ( const char *  name,
IlvValueTypeClass type 
)

Initializes a new group accessor.

When the value specified by name is changed for a group, the same value change will be forwarded to all the nodes of the group. When the value is queried for a group, it will be queried from all the nodes of the group, and the last value will be returned.

Member Function Documentation

virtual IlUInt IlvGroupUserAccessor::compareValues ( const IlvAccessorHolder object,
const IlvAccessible ref,
IlvValue values,
IlUShort  count,
IlvValueArray diffs 
) const
protectedvirtual

Compares the values in ref and object and returns the differing values.

Compares the objects object and ref for the values specified by the values array of length count.

The default implementation simply calls the IlvAccessible::compareValues(const IlvAccessible*, IlvValue*, IlUShort, IlvValueArray&) const method, which will query the values for the two objects and compare them one by one. Subclasses may compare values more cleverly by grouping differences: for example, the IlvGroupAccessor subclass detects when all nodes of a group differ homogeneously and reports only one difference for the whole group.

Parameters
objectThe object to compare.
refThe reference to compare to.
valuesThe values to be compared.
countThe number of elements in the array values.
diffsWhere the differences are stored.
Returns
The number of differences found. This is therefore the size of the output array diffs.
See also
IlvAccessible::compareValues().
IlvProtoInstance, IlvPrototype.

Reimplemented from IlvUserAccessor.


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