protected override void DoMouseOperation(TreeNodeAdvMouseEventArgs args)
{
if (Tree.SelectionMode == TreeSelectionMode.Single)
{
base.DoMouseOperation(args);
}
else if (CanSelect(args.Node))
{
args.Node.IsSelected = !args.Node.IsSelected;
Tree.SelectionStart = args.Node;
}
}
protected override void DoMouseOperation(TreeNodeAdvMouseEventArgs args)
{
if (Tree.SelectionMode == TreeSelectionMode.Single || Tree.SelectionStart == null)
{
base.DoMouseOperation(args);
}
else if (CanSelect(args.Node))
{
Tree.SuspendSelectionEvent = true;
try
{
SelectAllFromStart(args.Node);
}
finally
{
Tree.SuspendSelectionEvent = false;
}
}
}
public abstract void MouseUp(TreeNodeAdvMouseEventArgs args);
public virtual void MouseDoubleClick(TreeNodeAdvMouseEventArgs args)
{
}
public override void MouseUp(TreeNodeAdvMouseEventArgs args)
{
FinishResize();
}
public override void MouseDown(TreeNodeAdvMouseEventArgs args)
{
}
public override void MouseDoubleClick(TreeNodeAdvMouseEventArgs args)
{
Tree.AutoSizeColumn(Column);
}
protected override void MouseDownAtEmptySpace(TreeNodeAdvMouseEventArgs args)
{
}
public override void MouseDown(TreeNodeAdvMouseEventArgs args)
{
if (args.Node != null)
{
Tree.ItemDragMode = true;
Tree.ItemDragStart = args.Location;
if (args.Button == MouseButtons.Left || args.Button == MouseButtons.Right)
{
Tree.BeginUpdate();
try
{
Tree.CurrentNode = args.Node;
if (args.Node.IsSelected)
_mouseDownFlag = true;
else
{
_mouseDownFlag = false;
DoMouseOperation(args);
}
}
finally
{
Tree.EndUpdate();
}
}
}
else
{
Tree.ItemDragMode = false;
MouseDownAtEmptySpace(args);
}
}
protected virtual void MouseDownAtEmptySpace(TreeNodeAdvMouseEventArgs args)
{
Tree.ClearSelection();
}
protected virtual void DoMouseOperation(TreeNodeAdvMouseEventArgs args)
{
if (Tree.SelectedNodes.Count == 1 && args.Node != null && args.Node.IsSelected)
return;
Tree.SuspendSelectionEvent = true;
try
{
Tree.ClearSelectionInternal();
if (args.Node != null)
args.Node.IsSelected = true;
Tree.SelectionStart = args.Node;
}
finally
{
Tree.SuspendSelectionEvent = false;
}
}
public override void MouseUp(TreeNodeAdvMouseEventArgs args)
{
Tree.ItemDragMode = false;
if (_mouseDownFlag && args.Node != null)
{
if (args.Button == MouseButtons.Left)
DoMouseOperation(args);
else if (args.Button == MouseButtons.Right)
Tree.CurrentNode = args.Node;
}
_mouseDownFlag = false;
}
private void OnNodeMouseDoubleClick(TreeNodeAdvMouseEventArgs args)
{
if (NodeMouseDoubleClick != null)
NodeMouseDoubleClick(this, args);
}
private string GetNodeToolTip(TreeNodeAdvMouseEventArgs args)
{
string msg = args.Control.GetToolTip(args.Node);
BaseTextControl btc = args.Control as BaseTextControl;
if (btc != null && btc.DisplayHiddenContentInToolTip && String.IsNullOrEmpty(msg))
{
Size ms = btc.GetActualSize(args.Node, _measureContext);
if (ms.Width > args.ControlBounds.Size.Width || ms.Height > args.ControlBounds.Size.Height
|| args.ControlBounds.Right - OffsetX > DisplayRectangle.Width)
msg = btc.GetLabel(args.Node);
}
if (String.IsNullOrEmpty(msg) && DefaultToolTipProvider != null)
msg = DefaultToolTipProvider.GetToolTip(args.Node, args.Control);
return msg;
}
private TreeNodeAdvMouseEventArgs CreateMouseArgs(MouseEventArgs e)
{
TreeNodeAdvMouseEventArgs args = new TreeNodeAdvMouseEventArgs(e);
args.ViewLocation = new Point(e.X + OffsetX,
e.Y + _rowLayout.GetRowBounds(FirstVisibleRow).Y - ColumnHeaderHeight);
args.ModifierKeys = ModifierKeys;
args.Node = GetNodeAt(e.Location);
NodeControlInfo info = GetNodeControlInfoAt(args.Node, e.Location);
args.ControlBounds = info.Bounds;
args.Control = info.Control;
return args;
}
public override void MouseUp(TreeNodeAdvMouseEventArgs args)
{
Tree.ChangeInput();
Tree.UpdateView();
Tree.OnColumnClicked(Column);
}
