@Nonnull
@Override
public Connection connect(@Nonnull OutputTerminal output, @Nonnull InputTerminal input) {
// Locate the correct CanvasItem for the Connection.
CanvasItem canvas = output.getTerminalHolder().getCanvas();
if (canvas == input.getTerminalHolder().getCanvas()) {
if (canvas != this) return canvas.connect(output, input);
}
// If the two Terminals are in separate CanvasItems, the connection should
// be made in the ProjectItem.
else if (!(this instanceof ProjectItem && canvas.getProject() == this))
return canvas.getProject().connect(output, input);
// Make sure an identical Connection doesn't already exist.
for (Connection connection : output.getConnections())
if (connection.getInputTerminal().equals(input)) return connection;
// Create the Connection.
final Connection connection = createConnection(output, input);
connectionList.addItem(
connection,
new Runnable() {
@Override
public void run() {
connection
.getOutputTerminal()
.addEventListener(TerminalConnectionEvent.class, connectionListener);
}
});
return connection;
}
private void createConnections() {
for (ConnectionConfig connectionConfig : getConfig().getConnectionList()) {
try {
Connection connection = new ConnectionImpl(connectionConfig);
connection
.getOutputTerminal()
.addEventListener(TerminalConnectionEvent.class, connectionListener);
connectionList.addItem(connection);
} catch (Exception e) {
badConnections.add(connectionConfig);
log.error(
"Unable to create connection between terminals "
+ connectionConfig.getInputTerminalId()
+ " and "
+ connectionConfig.getOutputTerminalId(),
e);
}
}
}