HierarchyVisitorHelperImpl Class Reference

#include <HierarchyVisitorHelper.h>

Inheritance diagram for HierarchyVisitorHelperImpl:

Public Member Functions
	HierarchyVisitorHelperImpl (IPMUnknown *boss)
virtual bool16	Accept (IBaseVisitor *theVisitor)
virtual int32	CollectChildren (IBaseHandler *theHandler)
virtual IVisitorHelper *	QueryChild (int32 index)

Additional Inherited Members
Public Types inherited from IVisitorHelper
enum	{ kDefaultIID = IID_IVISITORHELPER }

Detailed Description

Base implementation for IVisitorHelper classes that use IHierarchy for finding children.

Member Function Documentation

virtual bool16 HierarchyVisitorHelperImpl::Accept ( IBaseVisitor *  theVisitor )

virtual

Override this to call the proper routine in theVisitor for the node.

Parameters

theVisitor

IN a pointer to the IBaseVisitor that knows how to pass control off to specific visitor routines, depending on the type of node found

Returns

bool16 whether to stop traversal yet or not; kTrue means stop immediately, kFalse means continue

Implements IVisitorHelper.

virtual int32 HierarchyVisitorHelperImpl::CollectChildren ( IBaseHandler *  theHandler )

virtual

Determine how many children this node has, and if necessary, do any allocation or caching needed when individual children are accessed via QueryChild.

Parameters

theHandler

IN pointer to the IBaseHandler in use for this visitation.

Returns

bool16 the number of children found for this item.

Implements IVisitorHelper.

virtual IVisitorHelper* HierarchyVisitorHelperImpl::QueryChild ( int32  index )

virtual

Query for a specific child of this node.

Parameters

index

IN the index of the node desired (zero-based)

Returns

an IVisitorHelper pointer to the child node

Implements IVisitorHelper.