private void initTreeView()
{
treeViewState = new TreeViewState();
List <AssetElement> treeEles = new List <AssetElement>();
treeEles.Add(new AssetElement("root", -1, 0));
treeModel = new AssetTreeModel(treeEles);
treeModel.modelChanged += onTreeModelChanged;
var headerState = AssetTreeView.CreateDefaultMultiColumnHeaderState(multiColumnTreeViewRect.width);
if (MultiColumnHeaderState.CanOverwriteSerializedFields(multiColumnHeaderState, headerState))
{
MultiColumnHeaderState.OverwriteSerializedFields(multiColumnHeaderState, headerState);
}
multiColumnHeaderState = headerState;
MultiColumnHeader multiColumnHeader = new MultiColumnHeader(headerState);
multiColumnHeader.ResizeToFit();
treeView = new AssetTreeView(treeViewState, multiColumnHeader, treeModel);
m_SearchField = new SearchField();
m_SearchField.downOrUpArrowKeyPressed += treeView.SetFocusAndEnsureSelectedItem;
}
public AssetTreeView(TreeViewState state, MultiColumnHeader multiColumnHeader, TreeModel <AssetElement> model) :
base(state, multiColumnHeader, model)
{
assetTreeModel = model as AssetTreeModel;
rowHeight = kRowHeights;
columnIndexForTreeFoldouts = 1;
showAlternatingRowBackgrounds = true;
showBorder = true;
customFoldoutYOffset = (kRowHeights - EditorGUIUtility.singleLineHeight) * 0.5f; // center foldout in the row since we also center content. See RowGUI
extraSpaceBeforeIconAndLabel = kToggleWidth;
multiColumnHeader.sortingChanged += OnSortingChanged;
Reload();
}