public ColumnDragMouseAction(ColumnElementListCompartment compartment, Column[] sourceColumns, Column targetColumn)
: base(compartment.Diagram)
{
myShape = compartment;
mySourceColumns = sourceColumns;
myLastTargetColumn = targetColumn;
}
public override void OnMouseDown(DiagramMouseEventArgs e)
{
base.OnMouseDown(e);
DiagramItem diagramItem = e.HitDiagramItem;
Column referenceColumn = ResolveColumn(diagramItem);
if (referenceColumn != null)
{
// See if we're dragging other columns
DiagramItemCollection selection = e.DiagramClientView.Selection.TopLevelItems;
Table table = referenceColumn.Table;
int count = selection.Count;
Column[] selectedColumns = new Column[count];
for (int i = 0; i < count; ++i)
{
Column column = ResolveColumn(selection[i]);
if (null == column ||
(column != referenceColumn && column.Table != table))
{
return;
}
selectedColumns[i] = column;
}
myDragSourceColumns = selectedColumns;
myDragSourceShape = (ColumnElementListCompartment)diagramItem.Shape;
}
else
{
myDragSourceColumns = null;
myDragSourceShape = null;
}
}
/// <summary>
/// Creates a new <see cref="ColumnElementListCompartment"/>.
/// </summary>
/// <param name="partition">The current <see cref="Partition"/> of the diagram.</param>
/// <returns>ColumnElementListCompartment</returns>
public override Compartment CreateCompartment(Microsoft.VisualStudio.Modeling.Partition partition)
{
ColumnElementListCompartment columnElementListCompartment = new ColumnElementListCompartment(partition, null);
if (base.IsDefaultCollapsed)
{
columnElementListCompartment.IsExpanded = false;
}
return(columnElementListCompartment);
}
public override void OnMouseMove(DiagramMouseEventArgs e)
{
Column[] sourceColumns;
if (null != (sourceColumns = myDragSourceColumns))
{
DiagramItem currentItem = e.HitDiagramItem;
Column targetColumn;
ColumnElementListCompartment sourceShape = myDragSourceShape;
if (currentItem.Shape != sourceShape)
{
myDragSourceColumns = null;
myDragSourceShape = null;
}
else if (null != (targetColumn = ResolveColumn(currentItem)) &&
-1 == (Array.IndexOf <Column>(sourceColumns, targetColumn)))
{
myDragSourceColumns = null;
myDragSourceShape = null;
e.DiagramClientView.ActiveMouseAction = new ColumnDragMouseAction(sourceShape, sourceColumns, targetColumn);
}
}
base.OnMouseMove(e);
}
public override void OnMouseUp(DiagramMouseEventArgs e)
{
myDragSourceShape = null;
myDragSourceColumns = null;
base.OnMouseUp(e);
}
/// <summary>
/// Creates a new <see cref="ColumnElementListCompartment"/>.
/// </summary>
/// <param name="partition">The current <see cref="Partition"/> of the diagram.</param>
/// <returns>ColumnElementListCompartment</returns>
public override Compartment CreateCompartment(Microsoft.VisualStudio.Modeling.Partition partition)
{
ColumnElementListCompartment columnElementListCompartment = new ColumnElementListCompartment(partition, null);
if (base.IsDefaultCollapsed)
{
columnElementListCompartment.IsExpanded = false;
}
return columnElementListCompartment;
}
