public void AddReference(ItemSide src, Reference newref)
{
switch (src)
{
case ItemSide.Bottom:
Bottom.Add(newref);
break;
case ItemSide.Left:
Left.Add(newref);
break;
case ItemSide.Right:
Right.Add(newref);
break;
case ItemSide.Top:
Top.Add(newref);
break;
}
}
void FillFromDiagram(Diagram diagram)
{
// nejdrive vybereme zdrojovou a cilovou stranu
foreach (DiagramTableItem fromTable in diagram.Tables)
{
foreach (ForeignKey fk in TableStructureExtension.GetConstraints <ForeignKey, ForeignKey>(fromTable.Table))
{
DiagramTableItem toTable = diagram.FindTable(fk.PrimaryKeyTable);
if (toTable != null)
{
Interval fromx = fromTable.HorInterv, tox = toTable.HorInterv;
Interval fromy = fromTable.VerInterv, toy = toTable.VerInterv;
ItemSide src = ItemSide.None, dst = ItemSide.None;
if (fromx.Intersection(tox).Size > 0)
{
if (fromy <= toy)
{
src = ItemSide.Bottom;
dst = ItemSide.Top;
}
if (toy <= fromy)
{
src = ItemSide.Top;
dst = ItemSide.Bottom;
}
// prekryv pres oba rozmery - caru nebudeme kreslit
}
else if (fromy.Intersection(toy).Size > 0)
{
if (fromx <= tox)
{
src = ItemSide.Right;
dst = ItemSide.Left;
}
if (tox <= fromx)
{
src = ItemSide.Left;
dst = ItemSide.Right;
}
}
else //neni prekryv ani v jedne souradnici
{
if (fromx <= tox && fromy <= toy)
{
src = ItemSide.Right;
dst = ItemSide.Top;
}
if (fromx >= tox && fromy <= toy)
{
src = ItemSide.Left;
dst = ItemSide.Top;
}
if (fromx <= tox && fromy >= toy)
{
src = ItemSide.Right;
dst = ItemSide.Bottom;
}
if (fromx >= tox && fromy >= toy)
{
src = ItemSide.Left;
dst = ItemSide.Bottom;
}
}
AddReference(fromTable, toTable, fk, src, dst);
}
}
}
}
private void AddReference(DiagramTableItem fromTable, DiagramTableItem toTable, ForeignKey fk, ItemSide src, ItemSide dst)
{
Table from = AddTable(fromTable);
Table to = AddTable(toTable);
Reference newref = AddReference(fk, from, to);
if (!newref.IsMultiple)
{
from.AddReference(src, newref);
to.AddReference(dst, newref);
}
}
