/// <summary>
/// Removes a node from a specific point in the array
/// </summary>
/// <param name="index"></param>
public void RemoveNodeAt(int index)
{
if (_nodes == null)
{
return;
}
if (_nodes.Length == 1)
{
_nodes = null;
}
else
{
var tmp = new TreeviewNode[_nodes.Length];
int c = 0;
for (int i = 0; i < _nodes.Length; i++)
{
if (i != index)
{
tmp[c++] = _nodes[i];
}
}
_nodes = tmp;
}
Invalidate();
}
protected virtual void OnNodeTap(TreeviewNode node, point e)
{
if (NodeTapped != null)
{
NodeTapped(node, e);
}
}
/// <summary>
/// Removes a subnode from a specific point in the array
/// </summary>
/// <param name="index"></param>
public void RemoveNodeAt(int index)
{
if (_nodes == null)
{
return;
}
if (_nodes.Length == 1)
{
_nodes = null;
}
else
{
var tmp = new TreeviewNode[_nodes.Length];
int c = 0;
for (int i = 0; i < _nodes.Length; i++)
{
if (i != index)
{
tmp[c++] = _nodes[i];
}
}
_nodes = tmp;
}
Expanded = _expanded; // Automatically updates for 0 nodes
}
protected virtual void OnNodeExpanded(object sender, TreeviewNode node)
{
if (NodeExpanded != null)
{
NodeExpanded(sender, node);
}
}
protected override void TouchDownMessage(object sender, point point, ref bool handled)
{
if (_nodes != null)
{
TreeviewNode node = NodeFromPoint(point);
if (node != null)
{
node.PenDown = true;
}
}
}
private void ResetChildrenBounds(TreeviewNode node)
{
for (int i = 0; i < node.Length; i++)
{
node.Nodes[i].Bounds = new rect(0, 0, 0, 0);
if (node.Nodes[i].Length > 0)
{
ResetChildrenBounds(node.Nodes[i]);
}
}
}
private void SetChildrenPen(TreeviewNode node)
{
node.PenDown = false;
for (int i = 0; i < node.Length; i++)
{
node.Nodes[i].PenDown = false;
if (node.Nodes[i].Length > 0)
{
SetChildrenPen(node.Nodes[i]);
}
}
}
private void SetChildrenSelected(TreeviewNode node)
{
_selNode = null;
node.Selected = false;
for (int i = 0; i < node.Length; i++)
{
node.Nodes[i].Selected = false;
if (node.Nodes[i].Length > 0)
{
SetChildrenSelected(node.Nodes[i]);
}
}
}
protected override void TouchUpMessage(object sender, point point, ref bool handled)
{
if (_nodes != null)
{
// Get Selected Node
TreeviewNode node = NodeFromPoint(point);
int icoSize = _font.Height;
if (node != null)
{
var ecRect = new rect(node.Bounds.X, node.Bounds.Y, icoSize, icoSize);
if (ecRect.Contains(point) && node.PenDown)
{
/*node.Expanded = !node._expanded;
* if (!node._expanded)
* ResetChildrenBounds(node);*/
node.Expanded = !node.Expanded;
if (!node.Expanded)
{
ResetChildrenBounds(node);
}
Invalidate();
}
else
{
// Reset States
if (!node.Selected && node.PenDown)
{
for (int i = 0; i < _nodes.Length; i++)
{
ResetNodesState(_nodes[i]);
}
node.Selected = true;
_selNode = node;
Invalidate();
}
OnNodeTap(node, point);
}
}
// Reset Pen States
for (int i = 0; i < _nodes.Length; i++)
{
SetChildrenPen(_nodes[i]);
}
}
base.TouchUpMessage(sender, point, ref handled);
}
private void ResetNodesState(TreeviewNode topNode)
{
_selNode = null;
topNode.Selected = false;
topNode.PenDown = false;
for (int i = 0; i < topNode.Length; i++)
{
topNode.Nodes[i].Selected = false;
topNode.Nodes[i].PenDown = false;
if (topNode.Nodes[i].Length > 0)
{
SetChildrenSelected(topNode.Nodes[i]);
}
}
}
/// <summary>
/// Removes a specific node
/// </summary>
/// <param name="node"></param>
public void RemoveNode(TreeviewNode node)
{
if (_nodes == null)
{
return;
}
for (int i = 0; i < _nodes.Length; i++)
{
if (_nodes[i] == node)
{
RemoveNodeAt(i);
return;
}
}
}
private point RenderSubNodes(TreeviewNode node, int x, int y, int icoSize)
{
int maxX = x;
for (int i = 0; i < node.Length; i++)
{
int tH;
int tW;
_font.ComputeExtent(node.Nodes[i].Text, out tW, out tH);
node.Nodes[i].Bounds = new rect(x, y, Width + (x - Left), _font.Height + 8);
if (maxX < tW + icoSize + 20 + x)
{
maxX = tW + icoSize + 20 + x;
}
if (y + _font.Height + 4 > 0 && y < Top + Height)
{
// Draw Icon if node has children
if (node.Nodes[i].Length > 0)
{
Core.Screen.DrawRectangle(Colors.DarkGray, 1, x + 2, y + 2, icoSize - 4, icoSize - 4, 0, 0, Colors.Ghost, x + 2, y + 2, Colors.LightGray, x + 2, y + 6, 256);
Core.Screen.DrawTextInRect((node.Nodes[i].Expanded) ? "-" : "+", x + 2, y + 4, icoSize - 4, _font.Height, Bitmap.DT_AlignmentCenter, Colors.Charcoal, _font);
}
// Draw Node Text
Core.Screen.DrawTextInRect(node.Nodes[i].Text, x + icoSize + 4, y + 4, tW, _font.Height, Bitmap.DT_TrimmingCharacterEllipsis,
(node.Nodes[i].Selected) ? _selColor : _color, _font);
}
y += icoSize + 4;
if (node.Nodes[i].Expanded)
{
point e = RenderSubNodes(node.Nodes[i], x + icoSize, y, icoSize);
y = e.Y;
if (e.X > maxX)
{
maxX = e.X;
}
}
}
return(new point(maxX, y));
}
/// <summary>
/// Adds a node
/// </summary>
/// <param name="node"></param>
public void AddNode(TreeviewNode node)
{
node.Container = this;
if (_nodes == null)
{
_nodes = new[] { node };
}
else
{
var tmp = new TreeviewNode[_nodes.Length + 1];
Array.Copy(_nodes, tmp, _nodes.Length);
tmp[tmp.Length - 1] = node;
_nodes = tmp;
}
Invalidate();
}
private TreeviewNode CheckNodePoint(TreeviewNode node, point e)
{
for (int i = 0; i < node.Length; i++)
{
if (node.Nodes[i].Bounds.Contains(e))
{
return(node.Nodes[i]);
}
if (node.Nodes[i].Length > 0)
{
TreeviewNode subnode = CheckNodePoint(node.Nodes[i], e);
if (subnode != null)
{
return(subnode);
}
}
}
return(null);
}
private TreeviewNode NodeFromPoint(point e)
{
for (int i = 0; i < _nodes.Length; i++)
{
if (_nodes[i].Bounds.Contains(e))
{
return(_nodes[i]);
}
if (_nodes[i].Length > 0)
{
TreeviewNode node = CheckNodePoint(_nodes[i], e);
if (node != null)
{
return(node);
}
}
}
return(null);
}
/// <summary>
/// Adds a subnode
/// </summary>
/// <param name="node"></param>
public void AddNode(TreeviewNode node)
{
node.Parent = this;
node.Container = _container;
if (_nodes == null)
{
_nodes = new[] { node };
}
else
{
var tmp = new TreeviewNode[_nodes.Length + 1];
Array.Copy(_nodes, tmp, _nodes.Length);
tmp[tmp.Length - 1] = node;
_nodes = tmp;
}
if (_expanded || _nodes.Length == 1 && _container != null)
{
_container.Invalidate();
}
}
protected internal void ChildExpanded(TreeviewNode node)
{
OnNodeExpanded(this, node);
}
