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 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 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;
}
}
protected virtual void MouseDownAtEmptySpace(TreeNodeAdvMouseEventArgs args)
{
Tree.ClearSelection();
}
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;
}
public virtual void MouseDoubleClick(TreeNodeAdvMouseEventArgs args)
{
}
public abstract void MouseUp(TreeNodeAdvMouseEventArgs args);
public override void MouseUp(TreeNodeAdvMouseEventArgs args)
{
Tree.ChangeInput();
Tree.UpdateView();
Tree.OnColumnClicked(Column);
}
public override void MouseDown(TreeNodeAdvMouseEventArgs args)
{
}
public override void MouseDoubleClick(TreeNodeAdvMouseEventArgs args)
{
Tree.AutoSizeColumn(Column);
}
public override void MouseUp(TreeNodeAdvMouseEventArgs args)
{
FinishResize();
}
protected override void MouseDownAtEmptySpace(TreeNodeAdvMouseEventArgs args)
{
}
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;
}
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;
}
