/// <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 == null)
{
return(false);
}
bool ret = treeNodes.Remove(node);
if (!ret)
{
// 迭代所有子节点
foreach (UIComp_TreeNodeBase child in treeNodes)
{
ret = child.RemoveTreeNode(node);
if (ret)
{
break;
}
}
}
if (ret)
{
OnTreeNodesChanged(new TreeNodeEventArg(this));
}
return(ret);
}
public override UIComp_TreeNodeBase GetNodeAtPoint(Vector2 point)
{
foreach (UIComp_TreeNodeBase node in treeNodes)
{
UIComp_TreeNodeBase ret = node.GetNodeAtPoint(point);
if (ret != null)
{
return(ret);
}
}
return(null);
}
/// <summary>
/// 插入一个新的元素
/// </summary>
public UIComp_TreeNodeBase InsertTreeNode(int position, UIComp_TreeNodeBase item)
{
if (item == null)
{
throw new InvalidRequestException("Invalid insert item");
}
if (position < 0 || position >= treeNodes.Count)
{
treeNodes.Add(item);
}
else
{
treeNodes.Insert(position, item);
}
OnTreeNodesChanged(new TreeNodeEventArg(item));
return(item);
}
public override UIComp_TreeNodeBase GetNodeAtPoint(Vector2 point)
{
if (IsHit(point))
{
return(this);
}
// 迭代所有子项
if (expand)
{
foreach (UIComp_TreeNodeBase node in treeNodes)
{
UIComp_TreeNodeBase ret = node.GetNodeAtPoint(point);
if (ret != null)
{
return(ret);
}
}
}
return(null);
}
public UIComp_TreeNode(Window owner, UIComp_TreeNodeBase parent)
: base(owner)
{
this.parentNode = parent;
this.expand = true;
this.indentation = DefaultIndentation;
this.nodeIcon = new UIComp_DrawTextureAtlas(owner);
this.nodeText = new UIComp_DrawText(owner);
this.nodeIcon.ResourceAtlasLocation = new NexusEngine.NResourceLoc(@"engine_data:/ui/Atlas/engine_data1.txa");
this.nodeIcon.AtlasItemName = "0";
this.nodeIcon.Height = new UIDim(0, DefaultTreeNodeIconHeight);
this.nodeIcon.Width = new UIDim(0, DefaultTreeNodeIconHeight);
this.nodeText.TextFormat = DrawTextFormat.Left | DrawTextFormat.VerticalCenter | DrawTextFormat.NoClip;
this.nodeText.Height = new UIDim(0, DefaultTreeNodeTextHeight);
this.nodeText.Width = new UIDim(0, DefaultTreeNodeTextHeight);
this.nodeText.TextChanged += new EventHandler <GUIEventArgs>(nodeText_TextChanged);
this.nodeText.Text = "Tree Item";
CacheOwnerData();
}
protected UIComp_TreeNodeBase(Window owner, UIComp_TreeNodeBase parent)
: base(owner)
{
this.parentNode = parent;
}
} //default ctor not valid - we want to enforce initializing our data
protected UIComp_TreeNodeBase(Window owner)
: base(owner)
{
this.parentNode = null;
}