//Recursively find the child who doesn't have a child yet
public void Pin(ShapeGraphic childToPin)
{
if (childShapeGraphic == null)
{
//Find the highest parent in the child graphic
while (true)
{
if (childToPin.hasParent())
{
childToPin = childToPin.getParent();
}
else
{
break;
}
}
childShapeGraphic = childToPin;
childToPin.giveParent(this);
}
else
{
childShapeGraphic.Pin(childToPin);
}
}
//Returns true if a passed shape is pinned to the shape in any way
public bool checkIfAlreadyPinned(ShapeGraphic childToPin)
{
bool result = false;
if (childToPin == this)
{
return(true);
}
if (childShapeGraphic != null)
{
result = childShapeGraphic.checkIfAlreadyPinned(childToPin);
if (result == true)
{
return(true);
}
}
if (parentShapeGraphic != null)
{
result = parentShapeGraphic.checkIfAlreadyPinned(childToPin);
if (result == true)
{
return(true);
}
}
//CHeck all the childToPin's children and parents
if (childToPin.hasChild())
{
if (childShapeGraphic != null)
{
result = childShapeGraphic.checkIfAlreadyPinned(childToPin.getChild());
if (result == true)
{
return(true);
}
}
if (parentShapeGraphic != null)
{
result = parentShapeGraphic.checkIfAlreadyPinned(childToPin.getChild());
if (result == true)
{
return(true);
}
}
}
if (childToPin.hasParent())
{
if (childShapeGraphic != null)
{
result = childShapeGraphic.checkIfAlreadyPinned(childToPin.getParent());
if (result == true)
{
return(true);
}
}
if (parentShapeGraphic != null)
{
result = parentShapeGraphic.checkIfAlreadyPinned(childToPin.getParent());
if (result == true)
{
return(true);
}
}
}
return(false);
}