nodeset.cpp

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// $Id: nodeset.cpp 751 2006-03-31 15:43:49Z alex $
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 */

// Implementation of Node sets, i.e. arbitrary collections of nodes.

/*
*/

#include "camtypes.h"

#include "nodeset.h"


DECLARE_SOURCE("$Revision: 751 $");

// Declare smart memory handling in Debug builds
#define new CAM_DEBUG_NEW

CC_IMPLEMENT_MEMDUMP(NodeSet, CCObject)


/********************************************************************************************

>   NodeSet::NodeSet(BOOL Strict)

    Author:     Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/10/94
    Inputs:     Strict - TRUE => Strict set - a node may only be in the set 0 or 1 times.
                        FALSE => Not strict - a node may be in the set more than once.
    Purpose:    Create a NodeSet.  It may or may not be a strict set - it depends on the
                "Strict" parameter.  If it is strict, then when nodes are added, the class
                checks that they don't already exist in the set - if they do, it just does
                nothing and returns success.
    SeeAlso:    NodeSet

********************************************************************************************/

NodeSet::NodeSet(BOOL Strict) : m_NodeSet( 50 )
{
    // Remember what kind of set this is.
    m_fStrictSet = Strict;
}


/********************************************************************************************

>   BOOL NodeSet::AddNode(Node *pNode)

    Author:     Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/10/94
    Inputs:     pNode - pointer to the Node to add to this NodeSet.
    Returns:    TRUE if the set now contains the specified Node;
                FALSE if out of memory => ERROR1
    Purpose:    Adds the specified node to this node set. If this is a strict set (see the
                NodeSet constructor), then the set is first scanned to see if it already
                contains this node.  If it does, then the set is unchanged and success is
                returned.
    Errors:     Out of memory => ERROR1
    SeeAlso:    NodeSet::NodeSet

********************************************************************************************/

BOOL NodeSet::AddNode(Node *pNode)
{
    ERROR2IF(pNode == NULL, FALSE, "NULL node pointer in NodeSet::AddNode()");

    if( m_fStrictSet )
    {
        // Check to see if we haven't already got this node in the set
        size_t          cNode = m_NodeSet.size();
        for( size_t i = 0; i < cNode; i++ )
        {
            if( m_NodeSet[i] == pNode )
                // Already have this node - return success
                return TRUE;
        }
    }

    // See if we can add another node to this set.
    m_NodeSet.push_back( pNode );

    // Return success to caller
    return TRUE;
}

/********************************************************************************************

>   void NodeSet::MakeEmpty()

    Author:     Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/10/94
    Purpose:    Remove all nodes from this NodeSet.
    SeeAlso:    DynamicArray::EmptyArray

********************************************************************************************/

void NodeSet::MakeEmpty()
{
    // Delete all the array elements, and create a new set that are all NULL.
    m_NodeSet.clear();
}


/********************************************************************************************

>   void NodeSet::MarkNodes()

    Author:     Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/10/94
    Purpose:    Set the MARKED flag on all Nodes in this NodeSet.
                This is usually done before doing a selective rendering pass on the 
                document tree.
    SeeAlso:    NodeSet::UnmarkNodes

********************************************************************************************/

void NodeSet::MarkNodes()
{

}

/********************************************************************************************

>   void NodeSet::UnmarkNodes()

    Author:     Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/10/94
    Purpose:    Clear the MARKED flag on all Nodes in this NodeSet.
                This is usually done after doing a selective rendering pass on the 
                document tree.
    SeeAlso:    NodeSet::MarkNodes

********************************************************************************************/

void NodeSet::UnmarkNodes()
{

}

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