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blockly > ConnectionChecker
ConnectionChecker class
Class for connection type checking logic.
Signature:
export declare class ConnectionChecker implements IConnectionChecker
Implements: IConnectionChecker
Methods
| Method |
Modifiers |
Description |
| canConnect(a, b, isDragging, opt_distance) |
|
Check whether the current connection can connect with the target connection. |
| canConnectToPrevious_(a, b) |
protected |
Helper function for drag checking. |
| 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. |
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Last updated 2024-09-18 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-09-18 UTC."],[[["The `ConnectionChecker` class in Blockly manages the logic for validating connections between blocks."],["It provides methods to check connection compatibility based on type, safety, and drag restrictions."],["These checks ensure that connections adhere to Blockly's rules and prevent invalid block configurations."],["Developers can use `ConnectionChecker` to determine if two connections can be joined and understand the reasons for any connection failures."]]],["The `ConnectionChecker` class, implementing `IConnectionChecker`, manages connection type checking in the Blockly system. Key actions include determining if two connections can link via the `canConnect` and `canConnectWithReason` methods, with the latter also providing error codes. It assesses drag-related connections via `doDragChecks` and verifies safety using `doSafetyChecks`. Type compatibility is handled by `doTypeChecks`. Additionally, `getErrorMessage` provides readable error messages and `canConnectToPrevious_` is used for drag checking.\n"]]
