bool IDropTarget.CanDropElement(UIElement draggedElement)
{
bool allowColumnReorder = true;
ColumnManagerRow parentRow = this.ParentRow as ColumnManagerRow;
if (parentRow != null)
{
allowColumnReorder = parentRow.AllowColumnReorder;
}
DataGridContext sourceDetailContext = this.DataGridContext;
Debug.Assert(sourceDetailContext != null);
DetailConfiguration sourceDetailConfig = (sourceDetailContext != null) ? sourceDetailContext.SourceDetailConfiguration : null;
DataGridContext draggedDetailContext = DataGridControl.GetDataGridContext(draggedElement);
Debug.Assert(draggedDetailContext != null);
DetailConfiguration draggedDetailConfig = (draggedDetailContext != null) ? draggedDetailContext.SourceDetailConfiguration : null;
return((sourceDetailConfig == draggedDetailConfig) &&
(sourceDetailContext != null) &&
(draggedDetailContext != null) &&
(sourceDetailContext.GroupLevelDescriptions == draggedDetailContext.GroupLevelDescriptions) &&
(allowColumnReorder) &&
(draggedElement is ColumnManagerCell) &&
(draggedElement != this));
}
bool IDropTarget.CanDropElement(UIElement draggedElement)
{
ColumnManagerCell draggedCell = draggedElement as ColumnManagerCell;
if ((draggedCell == null) || (this == draggedCell))
{
return(false);
}
ColumnManagerRow parentRow = this.ParentRow as ColumnManagerRow;
if ((parentRow == null) || !parentRow.AllowColumnReorder)
{
return(false);
}
if (!ColumnManagerCell.CanMove(draggedCell) || !ColumnManagerCell.CanMove(this))
{
return(false);
}
DataGridContext draggedDetailContext = draggedCell.DataGridContext;
DataGridContext sourceDetailContext = this.DataGridContext;
Debug.Assert((draggedDetailContext != null) && (sourceDetailContext != null));
return((sourceDetailContext.SourceDetailConfiguration == draggedDetailContext.SourceDetailConfiguration) &&
(sourceDetailContext.GroupLevelDescriptions == draggedDetailContext.GroupLevelDescriptions));
}
internal bool CanDoSort()
{
ColumnManagerRow parentRow = this.ParentRow as ColumnManagerRow;
if (parentRow != null)
{
if (!parentRow.AllowSort)
{
return(false);
}
}
DataGridContext dataGridContext = this.DataGridContext;
if (dataGridContext == null)
{
return(false);
}
// When details are flatten, only the ColumnManagerCell at the master level may do the sort.
if (dataGridContext.IsAFlattenDetail)
{
return(false);
}
if (dataGridContext.SourceDetailConfiguration == null)
{
if (!dataGridContext.Items.CanSort)
{
return(false);
}
}
if (!this.IsEnabled)
{
return(false);
}
ColumnBase parentColumn = this.ParentColumn;
if ((parentColumn == null) || (!parentColumn.AllowSort))
{
return(false);
}
return(true);
}
internal bool CanDoSort()
{
ColumnManagerRow parentRow = this.ParentRow as ColumnManagerRow;
if (parentRow != null)
{
if (!parentRow.AllowSort)
{
return(false);
}
}
DataGridContext dataGridContext = this.DataGridContext;
if (dataGridContext == null)
{
return(false);
}
if (dataGridContext.SourceDetailConfiguration == null)
{
if (!dataGridContext.Items.CanSort)
{
return(false);
}
}
if (!this.IsEnabled)
{
return(false);
}
ColumnBase parentColumn = this.ParentColumn;
if ((parentColumn == null) || (!parentColumn.AllowSort))
{
return(false);
}
return(true);
}
