public void OnEnable(Rect pos, EditorWindow parent)
{
m_Parent = parent;
m_Position = pos;
m_HorizontalSplitterRect = new Rect(
(int)(m_Position.x + m_Position.width * m_HorizontalSplitterPercent),
m_Position.y,
k_SplitterWidth,
m_Position.height);
m_GraphCollectionTreeState = new TreeViewState();
m_collectionTree = new GraphCollectionTree(m_GraphCollectionTreeState, this);
m_GraphCollectionDetailTreeState = new TreeViewState();
m_detailTree = new GraphCollectionDetailTree(m_GraphCollectionDetailTreeState, this);
m_collectionTree.Reload();
m_detailTree.Reload();
}