ConnectionState

ConnectionState 类型打包了有关正在进行的连接的所有信息。它由 useConnection 钩子返回。

¥The ConnectionState type bundles all information about an ongoing connection. It is returned by the useConnection hook.


type NoConnection = {
  inProgress: false;
  isValid: null;
  from: null;
  fromHandle: null;
  fromPosition: null;
  fromNode: null;
  to: null;
  toHandle: null;
  toPosition: null;
  toNode: null;
};
type ConnectionInProgress = {
  inProgress: true;
  isValid: boolean | null;
  from: XYPosition;
  fromHandle: Handle;
  fromPosition: Position;
  fromNode: NodeBase;
  to: XYPosition;
  toHandle: Handle | null;
  toPosition: Position;
  toNode: NodeBase | null;
};
 
type ConnectionState = ConnectionInProgress | NoConnection;

字段

¥Fields

Name	Type	Default
`inProgress`	`boolean` Indicates whether a connection is currently in progress.
`isValid`	`boolean \| null` If an ongoing connection is above a handle or inside the connection radius, this will be `true` or `false`, otherwise `null`.
`from`	`XYPosition \| null` Returns the xy start position or `null` if no connection is in progress.
`fromHandle`	`Handle \| null` Returns the start handle or `null` if no connection is in progress.
`fromPosition`	`Position \| null` Returns the side (called position) of the start handle or `null` if no connection is in progress.
`fromNode`	`NodeType \| null` Returns the start node or `null` if no connection is in progress.
`to`	`XYPosition \| null` Returns the xy end position or `null` if no connection is in progress.
`toHandle`	`Handle \| null` Returns the end handle or `null` if no connection is in progress.
`toPosition`	`Position \| null` Returns the side (called position) of the end handle or `null` if no connection is in progress.
`toNode`	`NodeType \| null` Returns the end node or `null` if no connection is in progress.