/// <summary>
/// 新建实体时使用
/// </summary>
/// <returns></returns>
public static TreeOptions New()
{
TreeOptions treeOptions = new TreeOptions()
{
IsSinglePath = false,
SelectBoxType = null,
IsDrag = false,
RadioBoxType = null,
RootId = null,
IsRemove = false,
IsRename = false,
AsyncUrl = string.Empty,
AdditionalSetOptions = null
};
return(treeOptions);
}
/// <summary>
/// 构建数节点
/// </summary>
/// <param name="htmlHelper">被扩展的htmlhelper实例</param>
/// <param name="name"> 树选择器的名称</param>
/// <param name="treeOptions">树的设置</param>
/// <param name="treeNodes">树节点集合如果不填则通过ViewData传值</param>
/// <exception cref="ArgumentNullException">ViewData为空时</exception>
/// <returns></returns>
public static MvcHtmlString Tree(this HtmlHelper htmlHelper, string name, TreeOptions treeOptions, IEnumerable <TreeNode> treeNodes = null)
{
if (treeNodes == null)
{
if (htmlHelper.ViewData[name] != null)
{
treeNodes = htmlHelper.ViewData[name] as IEnumerable <TreeNode>;
}
}
if (treeNodes == null)
{
throw new ExceptionFacade("ViewData没有对name赋值");
}
//定义属性字典
Dictionary <string, object> result = new Dictionary <string, object>();
//data属性字典
Dictionary <string, object> data = new Dictionary <string, object>();
//添加树节点数据
data.TryAdd("TreeNodes", treeNodes.Select(n => n.ToUnobtrusiveHtmlAttributes()));
//添加树属性数据
data.TryAdd("Settings", treeOptions.ToUnobtrusiveHtmlAttributes());
//将数据添加到集合中
//建立标签元素
TagBuilder builder = new TagBuilder("ul");
//添加初始化数据树
//添加用于脚本操作的标识
result["plugin"] = "Tree";
result.Add("data", Json.Encode(data));
builder.MergeAttributes(result);
builder.MergeAttribute("id", name);
//样式
builder.MergeAttribute("class", "ztree");
return(MvcHtmlString.Create(builder.ToString().Replace(""|", "").Replace("|"", "")));
}
