cxflists.cpp

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// $Id: cxflists.cpp 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
       Copyright on certain contributions may be held in joint with their
              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

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Xara LX is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as published
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Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


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-----------------

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=================================XARAHEADEREND============================
 */

// Implements bits of the stuff defined in cxflists.h

#include "camtypes.h"
//#include "camfiltr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "cxflists.h"
//#include "group.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "cxftags.h"

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

>   CXaraFileTextStoryGroupRefListItem::~CXaraFileTextStoryGroupRefListItem();

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    31/8/96
    Inputs:     -
    Returns:    -
    Purpose:    Destroys every last fragmented morsal of this pathetic excuse for an object.

                If it has a group, its children are deleted via CascadeDelete(), then the group
                itself is deleted

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

// WEBSTER - markn 31/1/97
// Replaced with general system
/*
CXaraFileTextStoryGroupRefListItem::~CXaraFileTextStoryGroupRefListItem()
{
    if (pNodeGroup != NULL)
    {
        pNodeGroup->CascadeDelete();
        delete pNodeGroup;
        pNodeGroup = NULL;
    }
}
*/

//----------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------

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

>   CXaraFileNodeGroupRefListItem::~CXaraFileNodeGroupRefListItem();

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    29/1/97
    Inputs:     -
    Returns:    -
    Purpose:    Destroys every last fragmented morsal of this pathetic excuse for an object.

                If it has a group, its children are deleted via CascadeDelete(), then the group
                itself is deleted

                WEBSTER - markn 29/1/97
                Part of the general form of the system used to convert text to outlines in v1.5

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

CXaraFileNodeGroupRefListItem::~CXaraFileNodeGroupRefListItem()
{
    if (pNodeGroup != NULL)
    {
        pNodeGroup->CascadeDelete();
        delete pNodeGroup;
        pNodeGroup = NULL;
    }
}

//----------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------

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

>   InsertLevelStackItem::InsertLevelStackItem(BaseCamelotFilter* pThisFilter)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    2/9/96
    Inputs:     pThisFilter = ptr to the filter this item is used by
    Returns:    -
    Purpose:    The default constructor

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

InsertLevelStackItem::InsertLevelStackItem(BaseCamelotFilter* pThisFilter)
{ 
    NumNodesInserted    = 0; 
    pLastInsertedNode   = NULL; 
    pLastHandler        = NULL; 
    LastHandledTag      = TAG_UNDEFINED;
    pFilter             = pThisFilter;
    LastNodeInformedChildrenComplete = FALSE;

    ERROR3IF(pFilter == NULL,"pFilter is NULL");
}

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

>   BOOL InsertLevelStackItem::SetLastInsertedNode(Node* pNode)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    18/9/96
    Inputs:     pNode = ptr to node just inserted into the tree
    Returns:    TRUE if ok, FALSE if a failure has ocurred
    Purpose:    Sets the last inserted node of this tree

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

BOOL InsertLevelStackItem::SetLastInsertedNode(Node* pNode)
{
    ERROR3IF(pNode == NULL,"pNode is NULL");

    if (pNode != NULL)
    {
        if (pNode->FindPrevious() == pLastInsertedNode)
        {
            if (!InformLastInsertedNodeChildrenComplete())
                return FALSE;
        }

        pLastInsertedNode = pNode;
        LastNodeInformedChildrenComplete = FALSE;

        IncNumNodesInserted();          // Inc the number of nodes on this level
    }

    return TRUE;
}

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

>   BOOL InsertLevelStackItem::InformLastInsertedNodeChildrenComplete()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    18/9/96
    Inputs:     -
    Returns:    TRUE if ok, FALSE if a failure has ocurred
    Purpose:    Tells the last inserted node that its children are complete

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

BOOL InsertLevelStackItem::InformLastInsertedNodeChildrenComplete()
{
    ERROR3IF(pFilter == NULL,"pFilter is NULL");

    if (!LastNodeInformedChildrenComplete && pLastInsertedNode != NULL && pFilter != NULL)
    {
        if (!pFilter->ReadPostChildren(pLastInsertedNode))
            return FALSE;

        LastNodeInformedChildrenComplete = TRUE;
    }

    return TRUE;
}


//----------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------

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

>   InsertLevelStack::InsertLevelStack();

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/9/96
    Inputs:     -
    Returns:    -
    Purpose:    The default constructor

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

InsertLevelStack::InsertLevelStack()
{
    InsertLevel = 0;
}

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

>   InsertLevelStack::~InsertLevelStack();

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/9/96
    Inputs:     -
    Returns:    -
    Purpose:    The default destructor - deletes all the list's items

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

InsertLevelStack::~InsertLevelStack()
{
    DeleteAll();
}

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

>   void InsertLevelStack::Add(InsertLevelStackItem* pItem)

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/9/96
    Inputs:     pItem
    Returns:    -
    Purpose:    Adds the item to the top of the stack

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

void InsertLevelStack::Add(InsertLevelStackItem* pItem)
{
    InsertLevel++;
    AddTail(pItem);
}

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

>   InsertLevelStackItem* InsertLevelStack::Get()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/9/96
    Inputs:     -
    Returns:    ptr to a InsertLevelStackItem 
    Purpose:    Returns a ptr to the item on the top of the stack, without removing it

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

InsertLevelStackItem* InsertLevelStack::Get()
{
    return (InsertLevelStackItem*)List::GetTail();
}

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

>   InsertLevelStackItem* InsertLevelStack::Pop()

    Author:     Mark_Neves (Xara Group Ltd) <camelotdev@xara.com>
    Created:    3/9/96
    Inputs:     -
    Returns:    ptr to a InsertLevelStackItem 
    Purpose:    Removes the item from the top of the stack, and returns a ptr to it

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

InsertLevelStackItem* InsertLevelStack::Pop()
{
    if (InsertLevel == 0)
    {
        ERROR3("InsertLevel == 0");
        return NULL;
    }

    InsertLevel--;

    return (InsertLevelStackItem*)List::RemoveTail();
}

---