IConnectionChecker interface
Class for connection type checking logic.
Signature:
export interface IConnectionChecker
Methods
| Method | Description |
|---|---|
| canConnect(a, b, isDragging, opt_distance) | Check whether the current connection can connect with the target connection. |
| canConnectWithReason(a, b, isDragging, opt_distance) | Checks whether the current connection can connect with the target connection, and return an error code if there are problems. |
| doDragChecks(a, b, distance) | Check whether this connection can be made by dragging. |
| doSafetyChecks(a, b) | Check that connecting the given connections is safe, meaning that it would not break any of Blockly's basic assumptions (e.g. no self connections). |
| doTypeChecks(a, b) | Check whether this connection is compatible with another connection with respect to the value type system. E.g. square_root("Hello") is not compatible. |
| getErrorMessage(errorCode, a, b) | Helper method that translates a connection error code into a string. |