protected virtual TextFormatting GetFormatting(TreeListNode node, TreeListColumn column)
{
return(column.CellFormat);
}
protected virtual void PaintNode(Graphics dc, Rectangle rowRect, TreeListNode node, TreeListColumn[] visibleColumns, int visibleRowIndex)
{
CellPainter.DrawSelectionBackground(dc, rowRect, node);
foreach (TreeListColumn col in visibleColumns)
{
if (col.CalculatedRect.Right - HScrollValue() < RowHeaderWidth())
{
continue;
}
Rectangle cellRect = rowRect;
cellRect.X = col.CalculatedRect.X - HScrollValue();
cellRect.Width = col.CalculatedRect.Width;
if (col.VisibleIndex == 0)
{
int lineindet = 10;
// add left margin
cellRect.X += Columns.Options.LeftMargin;
cellRect.Width -= Columns.Options.LeftMargin;
// add indent size
int indentSize = GetIndentSize(node) + 5;
cellRect.X += indentSize;
cellRect.Width -= indentSize;
if (ViewOptions.ShowLine)
{
PaintLines(dc, cellRect, node);
}
cellRect.X += lineindet;
cellRect.Width -= lineindet;
Rectangle glyphRect = GetPlusMinusRectangle(node, col, visibleRowIndex);
if (glyphRect != Rectangle.Empty && ViewOptions.ShowPlusMinus)
{
CellPainter.PaintCellPlusMinus(dc, glyphRect, node);
}
if (!ViewOptions.ShowLine && !ViewOptions.ShowPlusMinus)
{
cellRect.X -= (lineindet + 5);
cellRect.Width += (lineindet + 5);
}
Image icon = GetNodeBitmap(node);
if (icon != null)
{
// center the image vertically
glyphRect.Y = cellRect.Y + (cellRect.Height / 2) - (icon.Height / 2);
glyphRect.X = cellRect.X;
glyphRect.Width = icon.Width;
glyphRect.Height = icon.Height;
PaintImage(dc, glyphRect, node, icon);
cellRect.X += (glyphRect.Width + 2);
cellRect.Width -= (glyphRect.Width + 2);
}
PaintCell(dc, cellRect, node, col);
}
else
{
PaintCell(dc, cellRect, node, col);
}
}
}
public virtual void OnNotifyAfterExpand(TreeListNode node, bool isExpanded)
{
raiseNotifyAfterExpand(node, isExpanded);
}
protected virtual void OnAfterSelect(TreeListNode node)
{
raiseAfterSelect(node);
}
protected override void OnKeyDown(KeyEventArgs e)
{
TreeListNode newnode = null;
if (e.KeyCode == Keys.PageUp)
{
int remainder = 0;
int diff = MaxVisibleRows(out remainder) - 1;
newnode = NodeCollection.GetNextNode(FocusedNode, -diff);
if (newnode == null)
{
newnode = Nodes.FirstVisibleNode();
}
}
if (e.KeyCode == Keys.PageDown)
{
int remainder = 0;
int diff = MaxVisibleRows(out remainder) - 1;
newnode = NodeCollection.GetNextNode(FocusedNode, diff);
if (newnode == null)
{
newnode = Nodes.LastVisibleNode(true);
}
}
if (e.KeyCode == Keys.Down)
{
newnode = NodeCollection.GetNextNode(FocusedNode, 1);
}
if (e.KeyCode == Keys.Up)
{
newnode = NodeCollection.GetNextNode(FocusedNode, -1);
}
if (e.KeyCode == Keys.Home)
{
newnode = Nodes.FirstNode;
}
if (e.KeyCode == Keys.End)
{
newnode = Nodes.LastVisibleNode(true);
}
if (e.KeyCode == Keys.Left)
{
if (FocusedNode != null)
{
if (FocusedNode.Expanded)
{
FocusedNode.Collapse();
EnsureVisible(FocusedNode);
return;
}
if (FocusedNode.Parent != null)
{
FocusedNode = FocusedNode.Parent;
EnsureVisible(FocusedNode);
}
}
}
if (e.KeyCode == Keys.Right)
{
if (FocusedNode != null)
{
if (FocusedNode.Expanded == false && FocusedNode.HasChildren)
{
FocusedNode.Expand();
EnsureVisible(FocusedNode);
return;
}
if (FocusedNode.Expanded == true && FocusedNode.HasChildren)
{
FocusedNode = FocusedNode.Nodes.FirstNode;
EnsureVisible(FocusedNode);
}
}
}
if (newnode != null)
{
if (MultiSelect)
{
// tree behavior is
// keys none, the selected node is added as the focused and selected node
// keys control, only focused node is moved, the selected nodes collection is not modified
// keys shift, selection from first selected node to current node is done
if (Control.ModifierKeys == Keys.Control)
{
FocusedNode = newnode;
}
else
{
MultiSelectAdd(newnode, Control.ModifierKeys);
}
}
else
{
FocusedNode = newnode;
}
EnsureVisible(FocusedNode);
}
base.OnKeyDown(e);
}
public virtual void OnNotifyBeforeExpand(TreeListNode node, bool isExpanding)
{
raiseNotifyBeforeExpand(node, isExpanding);
}
public void Reset()
{
m_current = null;
}
public NodeCollection(TreeListNode owner)
{
m_owner = owner;
}
public virtual void NodetifyAfterExpand(TreeListNode nodeToExpand, bool expanding)
{
}
public NodesEnumerator(TreeListNode firstNode)
{
m_firstNode = firstNode;
}
public virtual void NodetifyBeforeExpand(TreeListNode nodeToExpand, bool expanding)
{
}
public override void NodetifyAfterExpand(TreeListNode nodeToExpand, bool expanded)
{
m_tree.OnNotifyAfterExpand(nodeToExpand, expanded);
}
public bool Contains(TreeListNode node)
{
return(m_nodesMap.ContainsKey(node));
}
public void Remove(TreeListNode node)
{
m_nodes.Remove(node);
m_nodesMap.Remove(node);
}
public void Add(TreeListNode node)
{
m_nodes.Add(node);
m_nodesMap.Add(node, 0);
}