void JObjectTree::DropNode( JObject* pNode, JObject* pDest, bool bAsChild, bool bClone )
{
if (!pNode || !pDest) return;
JObject* pAddedNode = pNode;
pNode->AddRef();
if (bClone)
{
const char* nodeName = pNode->GetName();
pAddedNode = pNode->Clone( NULL, nodeName );
}
else
{
pNode->GetParent()->RemoveChild( pNode );
}
if (!bAsChild)
{
// insert after the node we dropped onto
JObject* pParent = pDest->GetParent();
pParent->AddChild( pAddedNode, pParent->GetChildIndex( pDest ) + 1 );
}
else
{
// add as child node
pDest->AddChild( pAddedNode );
}
pNode->Release();
} // JObjectTree::DropNode
void JObjectTree::Traverse( TraverseCallback callback, void* pContext ) const
{
if (!m_pRoot) return;
float nodeW = m_NodeWidth;
float nodeVisH = m_NodeHeight;
Frame ext( m_RootPos.x, m_RootPos.y, nodeW, nodeVisH );
// find node path for tree expansion
static std::vector<int> nodePath;
nodePath.clear();
JObject* pCurObj = m_pExpanded;
if (pCurObj) nodePath.push_back( 0 );
while (pCurObj && pCurObj != m_pRoot)
{
JObject* pParent = pCurObj->GetParent();
if (!pParent) break;
nodePath.push_back( pParent->GetChildIndex( pCurObj ) );
pCurObj = pParent;
}
// traverse root node (which is never collapsed)
if ((this->*callback)( ext, m_pRoot, (m_pExpanded != NULL), pContext ) == false) return;
// traverse along expansion path
pCurObj = m_pRoot;
for (int i = nodePath.size() - 1; i >= 0; i--)
{
int childIdx = nodePath[i];
if (!pCurObj) break;
int nCh = pCurObj->GetNChildren();
if (childIdx >= nCh) break;
float blockH = float( nCh )*nodeVisH;
ext.y = ext.y - blockH*0.5f + nodeVisH*0.5f;
ext.x += nodeW;
float cY = ext.y;
for (int j = 0; j < nCh; j++)
{
JObject* pChild = pCurObj->GetChild( j );
Frame chExt( ext );
chExt.y = cY;
bool bExpanded = (j == childIdx)&&(pCurObj != m_pExpanded);
if ((this->*callback)( chExt, pChild, bExpanded, pContext ) == false)
{
return;
}
cY += nodeVisH;
}
pCurObj = pCurObj->GetChild( childIdx );
ext.y += float( childIdx )*nodeVisH;
}
} // JObjectTree::Traverse
bool JObjectTree::DeleteNode()
{
if (!m_pSelected) return false;
JObject* pParent = m_pSelected->GetParent();
if (!pParent) return false;
int idx = pParent->GetChildIndex( m_pSelected );
pParent->RemoveChild( m_pSelected );
if (idx >= pParent->GetNChildren()) idx = pParent->GetNChildren() - 1;
if (idx < 0) idx = 0;
m_pSelected = pParent->GetChild( idx );
if (!m_pSelected) m_pSelected = pParent;
m_pExpanded = m_pSelected;
return true;
} // JObjectTree::DeleteNode