/// <summary>
/// 移除特定对象的第一个匹配项。
/// </summary>
/// <returns>如果成功移除 node，则为 true；否则为 false。</returns>
public bool RemoveTreeNode(UIComp_TreeNodeBase node)
{
if (node == rootNode)
{
return(false);
}
return(rootNode.RemoveTreeNode(node));
}
/// <summary>
/// 取对应位置的元素
/// </summary>
public UIComp_TreeNodeBase GetTreeNode(UIComp_TreeNodeBase parent, int position)
{
if (position < 0 || position >= parent.NodeCount)
{
NLogger.Instance.WriteString(LogType.Info, string.Format(System.Globalization.CultureInfo.CurrentCulture, "Invalid index {0} of treeNodes", position));
return(null);
}
return(parent.GetTreeNode(position));
}
/// <summary>
/// 插入一个新的元素
/// </summary>
public UIComp_TreeNodeBase InsertTreeNode(int position, UIComp_TreeNodeBase node, UIComp_TreeNodeBase parent)
{
if (parent == null)
{
return(rootNode.InsertTreeNode(position, node));
}
else
{
return(parent.InsertTreeNode(position, node));
}
}
/// <summary>
/// 往指定的父节点中追加一个缺省的子节点
/// </summary>
/// <param name="parent">parent 要追加子节点的节点</param>
public UIComp_TreeNodeBase AppendTreeNode(UIComp_TreeNodeBase parent)
{
if (parent == null)
{
return(rootNode.AppendTreeNode());
}
else
{
return(parent.AppendTreeNode());
}
}
private void addItemBtn_Clicked(object sender, GUIEventArgs e)
{
UIComp_TreeNodeBase newNode = this.AppendTreeNode(this.RootNode);
newNode.Text = "My custom node";
int count = 10;
while (--count > 0)
{
newNode = newNode.InsertTreeNode(0);
}
}
protected internal override bool OnMouseDoubleClicked(GUIMouseEventArgs e)
{
base.OnMouseDoubleClicked(e);
ClearAllSelections();
// get mouse position as a local pixel value
UIComp_TreeNodeBase node = GetNodeAtPoint(e.Position);
if (node != null)
{
BeginUpdate();
node.Selected = true;
node.Expand = !node.Expand;
EndUpdate();
}
return(true);
}
protected internal override bool OnMouseButtonDown(GUIMouseEventArgs e)
{
base.OnMouseButtonDown(e);
if (e.Button == GUISystem.ClickButton &&
!rootNode.OnMouseButtonDown(e))
{
// clear old selections if no control key is pressed or if not multi-select
if (!(GUISystem.Instance.Modifiers == System.Windows.Forms.Keys.Control) || !multiSelect)
{
ClearAllSelections();
}
// get mouse position as a local pixel value
UIComp_TreeNodeBase node = GetNodeAtPoint(e.Position);
if (node != null)
{
node.Selected = true;
}
}
return(true);
}
public TreeNodeEventArg(UIComp_TreeNodeBase node)
{
this.TreeNode = node;
}
/// <summary>
/// 移除指定位置的元素
/// </summary>
public bool RemoveTreeNode(int position, UIComp_TreeNodeBase parent)
{
return(parent.RemoveTreeNode(position));
}
