/// <summary>
/// Return a list of connections that belongs to this brick or to other bricks that belong to the same
/// hierarchical group than this brick.
/// This function can return an empty list but not null.
/// </summary>
/// <param name="myTopGroup">If this brick belongs to a group, set the top group in this param, or null otherwise</param>
/// <returns>A list of connection in this brick and other brick of the same group (can be empty)</returns>
private List<Brick.ConnectionPoint> getConnectionsListForAllMyGroup(out Group myTopGroup)
{
// get all the bricks in the group of this brick
myTopGroup = this.TopGroup;
if (myTopGroup != null)
{
List<LayerItem> brickList = myTopGroup.getAllLeafItems();
// create the result list with an estimation of the number of connections
List<ConnectionPoint> result = new List<ConnectionPoint>(brickList.Count * 2);
// now iterate on all the bricks to get all the free connection points
foreach (LayerItem item in brickList)
{
Brick brick = item as Brick;
// iterate on the connections points to find the free ones
if (brick.mConnectionPoints != null)
result.AddRange(brick.mConnectionPoints);
}
// return the result that may be null
return result;
}
else
{
if (mConnectionPoints != null)
return mConnectionPoints;
else
return (new List<ConnectionPoint>(0));
}
}
