public override void FetchData()
{
this.m_RootItem = new TreeViewItem(this.m_RootInstanceID, 0, (TreeViewItem) null, AssetsTreeViewDataSource.CreateDisplayName(this.m_RootInstanceID));
if (!this.showRootNode)
this.SetExpanded(this.m_RootItem, true);
IHierarchyProperty hierarchyProperty = (IHierarchyProperty) new HierarchyProperty(HierarchyType.Assets);
hierarchyProperty.Reset();
if (!hierarchyProperty.Find(this.m_RootInstanceID, (int[]) null))
Debug.LogError((object) ("Root Asset with id " + (object) this.m_RootInstanceID + " not found!!"));
int minDepth = hierarchyProperty.depth + (!this.showRootNode ? 1 : 0);
int[] array = this.expandedIDs.ToArray();
Texture2D texture = EditorGUIUtility.FindTexture(EditorResourcesUtility.emptyFolderIconName);
this.m_VisibleRows = new List<TreeViewItem>();
while (hierarchyProperty.NextWithDepthCheck(array, minDepth))
{
if (!this.foldersOnly || hierarchyProperty.isFolder)
{
int depth = hierarchyProperty.depth - minDepth;
TreeViewItem treeViewItem = !hierarchyProperty.isFolder ? (TreeViewItem) new AssetsTreeViewDataSource.NonFolderTreeItem(hierarchyProperty.instanceID, depth, (TreeViewItem) null, hierarchyProperty.name) : (TreeViewItem) new AssetsTreeViewDataSource.FolderTreeItem(hierarchyProperty.instanceID, depth, (TreeViewItem) null, hierarchyProperty.name);
treeViewItem.icon = !hierarchyProperty.isFolder || hierarchyProperty.hasChildren ? hierarchyProperty.icon : texture;
if (hierarchyProperty.hasChildren)
treeViewItem.AddChild((TreeViewItem) null);
this.m_VisibleRows.Add(treeViewItem);
}
}
TreeViewUtility.SetChildParentReferences(this.m_VisibleRows, this.m_RootItem);
if (this.foldersFirst)
{
AssetsTreeViewDataSource.FoldersFirstRecursive(this.m_RootItem);
this.m_VisibleRows.Clear();
this.GetVisibleItemsRecursive(this.m_RootItem, this.m_VisibleRows);
}
this.m_NeedRefreshVisibleFolders = false;
this.m_TreeView.SetSelection(Selection.instanceIDs, false);
}
