public void ForceFieldTransform(ReportField field)
{
if (field == null)
{
throw new ArgumentNullException(nameof(field));
}
if (FieldType != ReportFieldType.Value)
{
field.Transform = ReportFieldTransform.None;
}
else if (field.Transform == ReportFieldTransform.None)
{
var dataType = (field.Fields.Tail as EntityTypedField)?.DataType;
switch (dataType.GetValueOrDefault(EntityDataType.String))
{
case EntityDataType.Decimal:
case EntityDataType.Long:
case EntityDataType.Int:
field.Transform = ReportFieldTransform.Sum;
break;
default:
field.Transform = ReportFieldTransform.Count;
break;
}
}
}
protected override void OnDragLeave(EventArgs e)
{
base.OnDragLeave(e);
if (_draggingField != null)
{
Items.Remove(_draggingField);
_draggingField.Transform = _draggingOldTransform;
_draggingField = null;
}
}
private void SetDraggingField(ReportField field)
{
if (_draggingField != null)
{
Items.Remove(_draggingField);
}
if (_draggingField == field)
{
return;
}
_draggingField = field;
_draggingOldTransform = _draggingField.Transform;
ForceFieldTransform(_draggingField);
}
private void ShowFieldMenu(ReportFieldListBox sender, ReportField reportField)
{
_moveToColumnLabelsMenuItem.Enabled = sender.FieldType != ReportFieldType.Column;
_moveToRowLabelsMenuItem.Enabled = sender.FieldType != ReportFieldType.Row;
_moveToValuesMenuItem.Enabled = sender.FieldType != ReportFieldType.Value;
_aggregateMenuItem.Enabled = sender.FieldType == ReportFieldType.Value;
int index = sender.Items.IndexOf(reportField);
_moveUpMenuItem.Enabled = index > 0;
_moveToBeginningMenuItem.Enabled = index > 0;
_moveDownMenuItem.Enabled = index < sender.Items.Count - 1;
_moveToEndMenuItem.Enabled = index < sender.Items.Count - 1;
foreach (ToolStripMenuItem menuItem in _aggregateMenuItem.DropDownItems)
{
menuItem.Checked = (ReportFieldTransform)menuItem.Tag == reportField.Transform;
}
var bounds = sender.GetItemRectangle(index);
_selectedField = new SelectedField(sender, reportField);
_fieldContextMenu.Show(sender, bounds.Left, bounds.Bottom + 1);
}
protected override void OnDragDrop(DragEventArgs e)
{
base.OnDragDrop(e);
_draggingField = null;
}
public SelectedField(ReportFieldListBox listBox, ReportField field)
{
ListBox = listBox;
Field = field;
}