MetaTreeCtrl.cpp

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// MetaTreeCtrl.cpp: implementation of the CMetaTreeCtrl class.
//

#include "stdafx.h"
#include "gmeactivebrowser.h"
#include "MetaTreeCtrl.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

// Construction/Destruction

CMetaTreeCtrl::CMetaTreeCtrl()
{

}

CMetaTreeCtrl::~CMetaTreeCtrl()
{

}

// If recursive element returns NULL, otherwise the inserted item tree handle
HTREEITEM CMetaTreeCtrl::InsertItem(HTREEITEM hParent, CString strObjectName, LPUNKNOWN pUnknown, objtype_enum otObjectType)
{
        MGATREECTRL_LOGEVENT("CMetaTreeCtrl::InsertItem "+strObjectName+"\r\n");

        if(hParent==NULL)       // Root folder
        {
                HTREEITEM hItem=CTreeCtrlEx::InsertItem(strObjectName,0,0,TVI_ROOT,TVI_SORT);   
                CMgaObjectProxy ObjectProxy(pUnknown,otObjectType);
                m_MgaMap.AddEntry(hItem,ObjectProxy);
                SetItemData(hItem,(DWORD)0);
                return hItem;
        }

        if(m_MgaMap.bIsInMap(pUnknown)) // If the element has been already insereted in the map
        {
                HTREEITEM hItem=CTreeCtrlEx::InsertItem(strObjectName,(int)otObjectType,(int)otObjectType,hParent,TVI_SORT);    
                HTREEITEM hRefItem;
                m_MgaMap.LookupTreeItem(pUnknown,hRefItem); // Search for the handle of the inserted element
                SetItemData(hItem,(DWORD)hRefItem); // Set item data to reference that
                return NULL;
        }
        else
        {
                HTREEITEM hItem=CTreeCtrlEx::InsertItem(strObjectName,(int)otObjectType,(int)otObjectType,hParent,TVI_SORT);    
                CMgaObjectProxy ObjectProxy(pUnknown,otObjectType);
                m_MgaMap.AddEntry(hItem,ObjectProxy);
                SetItemData(hItem,(DWORD)0); // Set to zero if this is the first and hence no referenced element
                return hItem;
        }
}