void InitDsgVarsTreeIfNeeded(Rect transitionsRect, DsgVarComponent target)
{
if (treeviewDsgVars == null || treeviewDsgVarsState == null || treeviewDsgVars.target != target)
{
treeviewDsgVarsState = new TreeViewState();
bool firstInit = m_MultiColumnHeaderState == null;
var headerState = DsgVarsTreeView.CreateDefaultMultiColumnHeaderState(transitionsRect.width);
if (MultiColumnHeaderState.CanOverwriteSerializedFields(m_MultiColumnHeaderState, headerState))
{
MultiColumnHeaderState.OverwriteSerializedFields(m_MultiColumnHeaderState, headerState);
}
m_MultiColumnHeaderState = headerState;
var multiColumnHeader = new MultiColumnHeader(headerState);
if (firstInit)
{
multiColumnHeader.ResizeToFit();
}
var treeModel = new TreeModel <DsgVarsTreeElement>(GetData());
treeviewDsgVars = new DsgVarsTreeView(treeviewDsgVarsState, multiColumnHeader, treeModel)
{
target = target
};
}
}
