private void LoadTree()
{
TreeNodeItem root = new TreeNodeItem();
root.ImageIndex = 0;
root.Text = "Tree";
string[] parents = { "C#", "JAVA", "PYTHON", "C++", "C", "JAVASCRIPT" };
string[] infos = { "01", "02", "03", "04", "05", "06" };
List <TreeNodeItem> treeNodes = new List <TreeNodeItem>();
foreach (var item in parents)
{
TreeNodeItem treeNodeItem = new TreeNodeItem();
treeNodeItem.Text = item;
treeNodeItem.ImageIndex = 0;
foreach (var ch in infos)
{
treeNodeItem.Nodes.Add(new TreeNodeItem()
{
Text = ch, ImageIndex = 1
});
}
treeNodes.Add(treeNodeItem);
}
root.Open = true;
root.Nodes.AddRange(treeNodes);
treeView1.Nodes.Add(root);
}
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
TreeNodeItem ti = e.Node as TreeNodeItem;
if (ti != null)
{
textBox1.Text = ti.node.ToFullString();
}
}
protected virtual void OnDrawNode(Graphics g, SolidBrush brush, Pen pen, TreeNodeItem node)
{
if (SelectedNode == node)
{
using (SolidBrush solidBrush = new SolidBrush(Color.FromArgb(75, 110, 175)))
g.FillRectangle(solidBrush, node.Bounds);
//brush.Color = Color.White;
pen.Color = Color.White;
}
else
{
//brush.Color = this.ForeColor;
pen.Color = this.ForeColor;
}
if (node.ForeColor != Color.Transparent)
{
brush.Color = node.ForeColor;
}
else
{
brush.Color = this.ForeColor;
}
int x = node.Level * indent + 7;
g.DrawLine(pen, x + 8, node.Bounds.Y + rowHeight / 2, x + 23, node.Bounds.Y + rowHeight / 2);
if (node.Nodes.Count > 0)//开关
{
if (node.Open)
{
g.DrawLine(pen, x + 31, node.Bounds.Y + rowHeight - 13, x + 31, node.Bounds.Y + GetChildCount(node) * rowHeight + rowHeight / 2);//纵线
g.DrawImage(ImageCloseIcon, node.SwitchBounds);
}
else
{
g.DrawImage(ImageOpenIcon, node.SwitchBounds);
}
}
//文件夹
if (ImageList != null)
{
Image image = ImageList.Images[node.ImageIndex];
g.DrawImage(image, x + 25, node.Bounds.Y + 3);
}
//if (!node.Folder)
// g.DrawImage(FileIcon, x + 25, node.Bounds.Y + 3);
//else
// g.DrawImage(FolderIcon, x + 25, node.Bounds.Y + 3);
g.DrawString(node.Text, this.Font, brush, x + 50, node.Bounds.Y + 3);
}
/// <summary>
/// 获取node节点下所有已展开的字节点
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
public int GetChildCount(TreeNodeItem node)
{
int count = node.Nodes.Count;
foreach (var item in node.Nodes)
{
if (item.Open)
{
count += GetChildCount(item);
}
}
return(count);
}
private void DrawNode(Graphics g, SolidBrush brush, Pen pen, TreeNodeItem node)
{
node.SwitchBounds = new Rectangle(node.Level * indent + 7, node.Bounds.Y + 6, 12, 12);
OnDrawNode(g, brush, pen, node);
VirtualHeight += node.Bounds.Height;
if (node.Open)
{
foreach (var item in node.Nodes)
{
draw_y += rowHeight;
item.Bounds = new Rectangle(0, draw_y, this.Width, rowHeight);
item.Level = node.Level + 1;
DrawNode(g, brush, pen, item);
}
}
}
void PrintTree(SyntaxNode sn, TreeNode parentNode)
{
//for (int i = 0; i < depth; i++)
// Console.Write("\t");
//Console.WriteLine("{0}", node.GetType().ToString());
TreeNodeItem treeNodeItem = new TreeNodeItem(sn);
parentNode.Nodes.Add(treeNodeItem);
if (sn.ChildNodes().Count() > 0)
{
foreach (var c in sn.ChildNodes())
{
//PrintTree(c, ++depth);
PrintTree(c, treeNodeItem);
}
}
}
private IEnumerable <Object> CreateTreeOrderedList(TreeNodeItem parent, ILookup <Object, TreeNodeItem> treeLp)
{
if (parent == null || parent.DataItem == null)
{
yield break;
}
yield return(parent.DataItem);
var children = treeLp[parent.PrimaryKey];
foreach (var child in children)
{
foreach (var subChild in CreateTreeOrderedList(child, treeLp))
{
yield return(subChild);
}
}
}
public void SetCachedNodes(TreeNodeItem rootNode)
{
}