/// <summary>
/// 新建,黏贴插入操作
/// </summary>
/// <param name="index">Index.</param>
/// <param name="itemName">Item name.</param>
/// <param name="parentFolder">Parent folder.</param>
/// <param name="menuList">Menu list.</param>
private TreeItem InsertItem(int index, string itemName, TreeFolder parentFolder, TreeContainer menuList)
{
//实例化文件夹
GameObject go = GameObject.Instantiate(Resources.Load("Prefabs/TreeItem")) as GameObject;
go.name = itemName;
TreeItem item = go.GetComponent <TreeItem>();
item.MyTreeContainer = menuList;
item.BeFolder = false;
item.Name = itemName;
go.transform.SetParent(parentFolder.SubRootRectTransform as Transform);
item._RectTransform = go.GetComponent <RectTransform>();
item._RectTransform.pivot = new Vector2(0, 1);
item._RectTransform.anchorMax = new Vector2(0, 1);
item._RectTransform.anchorMin = new Vector2(0, 1);
item.ItemNameText.text = itemName;
item.ItemNameText.fontSize = UIEnum.FontSize;
var textRt = item.ItemNameText.gameObject.GetComponent <RectTransform>();
float w = Tools.GetStringW(item.ItemNameText.text, UIEnum.FontSize);
textRt.sizeDelta = new Vector2(w, UIEnum.ItmeH);
//重新设置下Folder的边框宽度
float w1 = UIEnum.ItemImageW + w;
item._RectTransform.sizeDelta = new Vector2(w1, UIEnum.ItemH);
item.ParentFolder = parentFolder;
//这里这句还是要注意点，文件夹和item混合插入应该会出问题，不过目前没这种需求
float h = (index + 1) * UIEnum.ItemH;
item._RectTransform.anchoredPosition = new Vector2(UIEnum.FolderBtnW * 2 + 4, -h);
item.CreateMenu(item);
parentFolder.ItemList.Insert(index, item);
parentFolder.RefreshItemNum();
//新建文件夹后通知上级进行重新排序，比如rootFolder下有10个subFolder，在第二个subFolder下新建，那么后面所有subFolder都要重排
//这里注意下ui坐标系是左下是0,0所以负值是向下移动
parentFolder.ParentYOrder(-UIEnum.ItemH, index);
return(item);
}
/// <summary>
/// 这个方法只有从folder右键创建item时调用
/// 其他地方用InsertItem
/// </summary>
/// <param name="itemName">Item name.</param>
/// <param name="parentFolder">Parent folder.</param>
/// <param name="menuList">Menu list.</param>
public static TreeItem Create(string itemName, TreeFolder parentFolder, TreeContainer treeContainer)
{
//添加文件夹时，如果父文件夹没有打开，先打开再添加
if (!parentFolder.BeFolderOpen)
{
parentFolder.BeFolderOpen = true;
}
//实例化文件夹
GameObject go = GameObject.Instantiate(Resources.Load("Prefabs/TreeItem")) as GameObject;
go.name = itemName;
TreeItem item = go.GetComponent <TreeItem>();
item.MyTreeContainer = treeContainer;
item.BeFolder = false;
item.Name = itemName;
go.transform.SetParent(parentFolder.SubRootRectTransform as Transform);
item._RectTransform = go.GetComponent <RectTransform>();
item._RectTransform.pivot = new Vector2(0, 1);
item._RectTransform.anchorMax = new Vector2(0, 1);
item._RectTransform.anchorMin = new Vector2(0, 1);
item.ItemNameText.text = itemName;
item.ItemNameText.fontSize = UIEnum.FontSize;
var textRt = item.ItemNameText.gameObject.GetComponent <RectTransform>();
float w = Tools.GetStringW(item.ItemNameText.text, UIEnum.FontSize);
textRt.sizeDelta = new Vector2(w, UIEnum.ItmeH);
//重新设置下Folder的边框宽度
float w1 = UIEnum.ItemImageW + w;
item._RectTransform.sizeDelta = new Vector2(w1, UIEnum.ItemH);
item.ParentFolder = parentFolder;
//float h = (parentFolder.SubItemNums + 1) * UIEnum.ItemH;
float h = parentFolder.CurFolderH;
//float h = parentFolder.CurFolderH;
item._RectTransform.anchoredPosition = new Vector2(UIEnum.FolderBtnW * 2 + 4, -h);
item.CreateMenu(item);
parentFolder.ItemList.Add(item);
parentFolder.RefreshItemNum();
//新建文件夹后通知上级进行重新排序，比如rootFolder下有10个subFolder，在第二个subFolder下新建，那么后面所有subFolder都要重排
//这里注意下ui坐标系是左下是0,0所以负值是向下移动
parentFolder.ParentYOrder(-UIEnum.ItemH, item.IndexInParentFolder);
//刷新下MenuList的边框宽，用于刷新MenuList滚动区域,item距离Menulist左边距离+一个图标间隔+4(文字和图标间隔)+w1(文字长度)
float _w = item.CurItemLeftOffset + UIEnum.ItemImageW + 4 + w1;
treeContainer.SetTreeW(_w);
treeContainer.RefreshTreeArea();
return(item);
}