/// <summary>
/// Handles the creation of a new connection. It does not allow a connection
/// from a intput connector to a output connector (it must be other way around)
/// </summary>
/// <param name="Sender">Sender of the event</param>
/// <param name="e">Event parameters</param>
/// <returns>
/// If true, the connection is added by the Netron library,
/// otherwise no connection is added
/// </returns>
/// <remarks>
/// Little trick is used with checking if the connection has the right direction
/// (from output to input). Because the output connector in Ferda is always
/// Connection type and the input connector is always FerdaConnector type, we can
/// check it by is
/// </remarks>
protected bool FerdaDesktop_OnNewConnection(object Sender, ConnectionEventArgs e)
{
//checking if the connection has the right direction
if (e.From is FerdaConnector)
{
//a message is throw to the user
//MessageBox.Show(ResManager.GetString("DesktopBadConnectionDescription"),
// ResManager.GetString("DesktopBadConnectionCaption"));
return false;
}
if (!(e.To is FerdaConnector))
{
//a message is throw to the user
MessageBox.Show(ResManager.GetString("DesktopBadConnectionDescription"),
ResManager.GetString("DesktopBadConnectionCaption"));
return false;
}
//I have the right connection and now I am checking the type consistency
IBoxModule fromBox = ((BoxNode)e.From.BelongsTo).Box;
IBoxModule toBox = ((BoxNode)e.To.BelongsTo).Box;
Modules.SocketInfo toSocket = ((FerdaConnector)e.To).Socket;
//checking the good socket Types
Modules.BoxType [] goodBoxTypes = toSocket.socketType;
bool contains = false;
foreach (Modules.BoxType boxType in goodBoxTypes)
{
if (fromBox.HasBoxType(boxType))
{
contains = true;
break;
}
}
if (contains)
{
//adding the connection to the ProjectManager
if (toBox.TryWriteEnter())
{
try
{
toBox.SetConnection(toSocket.name, fromBox);
}
catch (BadTypeError)
{
//showing the messageBox
MessageBox.Show(ResManager.GetString("DesktopBadConnectionInvalidType"),
ResManager.GetString("DesktopBadConnectionCaption"));
toBox.WriteExit();
return false;
}
catch (ConnectionExistsError)
{
//showing the messageBox
MessageBox.Show(ResManager.GetString("DesktopMoreThanOneErrorText"),
ResManager.GetString("DesktopBadConnectionCaption"));
toBox.WriteExit();
return false;
}
toBox.WriteExit();
}
else
{
FrontEndCommon.CannotWriteToBox(toBox, ResManager);
return false;
}
}
else
{
//showing the messageBox
MessageBox.Show(ResManager.GetString("DesktopBadConnectionInvalidType"),
ResManager.GetString("DesktopBadConnectionCaption"));
return false;
}
RefreshBoxNames();
archiveDisplayer.Adapt();
return true;
}
private bool graphControl1_OnNewConnection(object sender, Netron.GraphLib.ConnectionEventArgs e)
{
return(true);
}
private bool mConnections_OnConnectionRemoved(object sender, ConnectionEventArgs e)
{
this.paintables.Remove(e.Connection);
this.SortPaintables();
return(true);
}