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blockly > dragging > BlockDragStrategy
dragging.BlockDragStrategy class
Signature:
export declare class BlockDragStrategy implements IDragStrategy
Implements: IDragStrategy
Constructors
| Constructor |
Modifiers |
Description |
| (constructor)(block) |
|
Constructs a new instance of the BlockDragStrategy class |
Methods
| Method |
Modifiers |
Description |
| drag(newLoc) |
|
Moves the block and updates any connection previews. |
| endDrag(e) |
|
Cleans up any state at the end of the drag. Applies any pending connections. |
| getSearchRadius() |
protected |
Get the radius to use when searching for a nearby valid connection. |
| isMovable() |
|
Returns true if the block is currently movable. False otherwise. |
| revertDrag() |
|
Moves the block back to where it was at the beginning of the drag, including reconnecting connections. |
| shouldHealStack(e) |
protected |
Get whether the drag should act on a single block or a block stack. |
| startDrag(e) |
|
Handles any setup for starting the drag, including disconnecting the block from any parent blocks. |
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Last updated 2025-05-16 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-05-16 UTC."],[[["The `BlockDragStrategy` class manages the dragging behavior of blocks within Blockly."],["It provides methods for initiating, performing, and concluding drag operations, including handling connections and preview updates."],["This class ensures that block movement and interactions during dragging are handled correctly, including reverting to the original position if necessary."],["It implements the `IDragStrategy` interface, providing a consistent approach to drag-and-drop interactions within Blockly."]]],["The `BlockDragStrategy` class, implementing `IDragStrategy`, manages block dragging in Blockly. Key actions include `startDrag`, which disconnects the block from parents, and `drag`, which moves the block and updates previews. `endDrag` finalizes the drag, applying connections, while `revertDrag` returns the block to its original position. `isMovable` checks if a block is draggable. The constructor initializes a new `BlockDragStrategy` instance.\n"]]
