private void fl_CanSelectItemNeeded(object sender, FastTreeNS.BoolItemEventArgs e)
{
switch (e.ItemIndex % 20)
{
case 15: e.Result = false; break;
}
}
private void fl_ItemBackColorNeeded(object sender, FastTreeNS.ColorItemEventArgs e)
{
if (e.ItemIndex == 10)
e.Result = Color.SteelBlue;
if (e.ItemIndex == 8)
e.Result = DateTime.Now.Millisecond > 500 ? Color.Transparent : Color.Tomato;
}
private void fl_ItemForeColorNeeded(object sender, FastTreeNS.ColorItemEventArgs e)
{
if (e.ItemIndex == 1)
e.Result = Color.Red;
if (e.ItemIndex == 10)
e.Result = Color.White;
}
private void fl_ItemTextNeeded(object sender, FastTreeNS.StringItemEventArgs e)
{
if (e.ItemIndex == 0)
e.Result = "Time " + DateTime.Now.TimeOfDay;
else
e.Result = "Item " + e.ItemIndex;
}
private void fl_PaintItem(object sender, FastTreeNS.PaintItemContentEventArgs e)
{
if (e.Info.ItemIndex > 12 && e.Info.ItemIndex < 16)
{
//draw default background
fl.DrawItemBackgound(e.Graphics, e.Info);
//draw default selection
if (fl.SelectedItemIndexes.Contains(e.Info.ItemIndex))
fl.DrawSelection(e.Graphics, e.Info);
//draw icon
fl.DrawItemIcons(e.Graphics, e.Info);
//draw custom bold text
using (var font = new Font(Font, FontStyle.Bold))
e.Graphics.DrawString(e.Info.Text, font, Brushes.Black, e.Info.TextRect);
}
else
if (e.Info.ItemIndex == 18)
{
//draw whole item
fl.DrawItemWhole(e.Graphics, e.Info);
//draw border
e.Graphics.DrawRectangle(Pens.Gray, e.Info.TextAndIconRect);
}
else
if (e.Info.ItemIndex == 3)
{
//draw whole item
fl.DrawItemWhole(e.Graphics, e.Info);
//draw second icon
e.Graphics.DrawImage(imageList1.Images[1], new Point(e.Info.X - 16, e.Info.Rect.Top));
}
else
//default drawing
fl.DrawItemWhole(e.Graphics, e.Info);
}
private void ft_NodeChildrenNeeded(object sender, FastTreeNS.NodeChildrenNeededEventArgs e)
{
var path = e.Node as string;
//root ?
if (path == null)
{
//return driver's list
e.Children = DriveInfo.GetDrives().Select(d => d.RootDirectory.FullName).ToList();
return;
}
//path is not dir ?
if (!Directory.Exists(path))
return;
//get subdirs and files
string[] dirs, files;
try
{
dirs = Directory.GetDirectories(path);
files = Directory.GetFiles(path);
}
catch
{
return;//UnauthorizedAccessException
}
e.Children = dirs.Concat(files);
}
private void ft_NodeTextNeeded(object sender, FastTreeNS.StringNodeEventArgs e)
{
var path = e.Node as string;
e.Result = Path.GetFileName(path);
if (string.IsNullOrEmpty(e.Result))
e.Result = path;
}
private void fl_ItemForeColorNeeded(object sender, FastTreeNS.ColorItemEventArgs e)
{
switch (e.ItemIndex % 20)
{
case 5: e.Result = Color.Red; break;
case 15: e.Result = Color.Silver; break;
}
}
private void fl_ItemTextNeeded(object sender, FastTreeNS.StringItemEventArgs e)
{
switch(e.ItemIndex % 20)
{
case 5: e.Result = "Readonly item " + e.ItemIndex + ". You can not check/uncheck this item."; break;
case 15: e.Result = "Disabled item " + e.ItemIndex + ". You can not select this item."; break;
default: e.Result = "Regular item " + e.ItemIndex; break;
}
}
private void ft_DropOverNode(object sender, FastTreeNS.DragOverItemEventArgs e)
{
var draggedNodes = (e.Data.GetData(typeof(HashSet<object>)) as HashSet<object>).ToList().Cast<Node>();
var targetNode = e.Tag as Node;
//
switch(e.InsertEffect)
{
case FastTreeNS.InsertEffect.AddAsChild: AddChild(draggedNodes, targetNode); break;
case FastTreeNS.InsertEffect.InsertBefore: InsertBefore(draggedNodes, targetNode); break;
case FastTreeNS.InsertEffect.InsertAfter: InsertAfter(draggedNodes, targetNode); break;
}
ft.Build(root);
}
private void ft_DragOverNode(object sender, FastTreeNS.DragOverItemEventArgs e)
{
var draggedNodes = (e.Data.GetData(typeof(HashSet<object>)) as HashSet<object>).ToList().Cast<Node>();
var targetNode = e.Tag as Node;
//check if targetNode is child of draggedNodes
foreach(var n in draggedNodes)
if (targetNode.IsChildOf(n) || n == targetNode)
return;
//
e.Effect = e.AllowedEffect;
if(e.X > e.TextRect.Left + 50)
e.InsertEffect = FastTreeNS.InsertEffect.AddAsChild;
else
if(e.Y < e.TextRect.Top + 10)
e.InsertEffect = FastTreeNS.InsertEffect.InsertBefore;
else
e.InsertEffect = FastTreeNS.InsertEffect.InsertAfter;
}
private void fl_ItemIndentNeeded(object sender, FastTreeNS.IntItemEventArgs e)
{
if (e.ItemIndex == 5)
e.Result = 30;
}
private void fl_ItemIconNeeded(object sender, FastTreeNS.ImageItemEventArgs e)
{
if (e.ItemIndex == 1)
e.Result = DateTime.Now.Millisecond > 500 ? null : imageList1.Images[0];
}
private void fl_ItemTextNeeded(object sender, FastTreeNS.StringItemEventArgs e)
{
e.Result = list[e.ItemIndex].Name;
}
private void fl_ItemCheckedStateChanged(object sender, FastTreeNS.ItemCheckedStateChangedEventArgs e)
{
list[e.ItemIndex].Checked = e.Checked;
}
private void fl_ItemDrag(object sender, FastTreeNS.ItemDragEventArgs e)
{
fl.DoDragDrop(e.ItemIndex, DragDropEffects.Copy);
}
private void ft_NodeIconNeeded(object sender, FastTreeNS.ImageNodeEventArgs e)
{
var path = e.Node as string;
e.Result = File.Exists(path) ? Resources.default_icon : Resources.folder;
}
private void fl_ItemExpandedStateChanged(object sender, FastTreeNS.ItemExpandedStateChangedEventArgs e)
{
expandedItemIndex = e.Expanded ? e.ItemIndex : -1;
fl.BuildNeeded();
}
private void fl_ItemCheckStateNeeded(object sender, FastTreeNS.BoolItemEventArgs e)
{
e.Result = list[e.ItemIndex].Checked;
}
private void fl_ItemHeightNeeded(object sender, FastTreeNS.IntItemEventArgs e)
{
if (e.ItemIndex == 10)
e.Result = 40;
}
private void fl_ItemTextNeeded(object sender, FastTreeNS.StringItemEventArgs e)
{
e.Result = "Item " + e.ItemIndex;
}
private void ft_NodeChildrenNeeded(object sender, FastTreeNS.NodeChildrenNeededEventArgs e)
{
e.Children = GenerateNodes(e.Node as string, 100000);
}
