protected virtual void BuildDataDir(int depth, AssetModel.AssetInfo dirInfo, TreeViewItem parent)
        {
            var dirItem = new AssetTreeViewItem <AssetModel.AssetInfo>(dirInfo.id, depth, dirInfo.displayName, dirInfo);

            parent.AddChild(dirItem);

            if (dirInfo.hasChildren)
            {
                foreach (var childInfo in dirInfo.children)
                {
                    BuildDataDir(depth + 1, childInfo, dirItem);
                }
            }
        }
        /// <summary>
        /// 去引用到的目录查找所有用到的guid,批量更改
        /// </summary>
        private void OnContextUseThisItem(object userdata)
        {
            var item = userdata as AssetTreeViewItem <AssetModel.AssetInfo>;

            if (item != null)
            {
                AssetModel.AssetInfo group   = ((AssetTreeViewItem <AssetModel.AssetInfo>)item.parent).data;
                AssetModel.AssetInfo useInfo = item.data;
                var style = AssetDanshariStyle.Get();
                if (!EditorUtility.DisplayDialog(String.Empty, style.sureStr + style.duplicateContextOnlyUseThis.text,
                                                 style.sureStr, style.cancelStr))
                {
                    return;
                }

                Dictionary <string, List <string> > beReplaceDic = new Dictionary <string, List <string> >();
                for (int i = group.children.Count - 1; i >= 0; i--)
                {
                    var info = group.children[i];
                    if (info != useInfo)
                    {
                        //存储依赖info的资源路径
                        if (info.hasChildren)
                        {
                            List <string> depList = new List <string>();
                            for (int j = 0; j < info.children.Count; j++)
                            {
                                depList.Add(info.children[j].fileRelativePath);
                            }
                            beReplaceDic.Add(info.fileRelativePath, depList);
                        }
                        AssetDatabase.DeleteAsset(info.fileRelativePath);
                        info.deleted = true;
                    }
                }
                ((AssetRepeatModel)m_Model).SetUseThis(useInfo.fileRelativePath, beReplaceDic);
                EditorUtility.DisplayDialog(String.Empty, style.progressFinish, style.sureStr);
                AssetDatabase.Refresh();
                Repaint();
            }
        }