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blockly > InsertionMarkerPreviewer
InsertionMarkerPreviewer class
Signature:
export declare class InsertionMarkerPreviewer implements IConnectionPreviewer
Implements: IConnectionPreviewer
Constructors
Methods
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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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-09-18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."],[[["\u003cp\u003eThe \u003ccode\u003eInsertionMarkerPreviewer\u003c/code\u003e class in Blockly helps visualize where a block will be inserted during drag-and-drop interactions.\u003c/p\u003e\n"],["\u003cp\u003eIt implements the \u003ccode\u003eIConnectionPreviewer\u003c/code\u003e interface and provides methods for displaying and hiding previews.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eInsertionMarkerPreviewer\u003c/code\u003e handles two preview scenarios: inserting a block into an empty space and replacing an existing block.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers can use methods like \u003ccode\u003epreviewConnection\u003c/code\u003e and \u003ccode\u003epreviewReplacement\u003c/code\u003e to control the preview behavior.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003edispose\u003c/code\u003e method should be called to clean up references when the previewer is no longer needed.\u003c/p\u003e\n"]]],[],null,["[blockly](./blockly.md) \\\u003e [InsertionMarkerPreviewer](./blockly.insertionmarkerpreviewer_class.md)\n\nInsertionMarkerPreviewer class\n------------------------------\n\n**Signature:** \n\n export declare class InsertionMarkerPreviewer implements IConnectionPreviewer \n\n**Implements:** [IConnectionPreviewer](./blockly.iconnectionpreviewer_interface.md)\n\nConstructors\n------------\n\n| Constructor | Modifiers | Description |\n|--------------------------------------------------------------------------------------------------------|-----------|-------------------------------------------------------------------|\n| [(constructor)(draggedBlock)](./blockly.insertionmarkerpreviewer_class._constructor__1_constructor.md) | | Constructs a new instance of the `InsertionMarkerPreviewer` class |\n\nMethods\n-------\n\n| Method | Modifiers | Description |\n|---------------------------------------------------------------------------------------------------------------------------------------|-----------|--------------------------------------------------------------------------------------------------------------------------------------------------|\n| [dispose()](./blockly.insertionmarkerpreviewer_class.dispose_1_method.md) | | Dispose of any references held by this connection previewer. |\n| [hidePreview()](./blockly.insertionmarkerpreviewer_class.hidepreview_1_method.md) | | Hide any previews that are currently displayed. |\n| [previewConnection(draggedConn, staticConn)](./blockly.insertionmarkerpreviewer_class.previewconnection_1_method.md) | | Display a connection preview where the draggedCon connects to the staticCon, and no block is being relaced. |\n| [previewReplacement(draggedConn, staticConn, replacedBlock)](./blockly.insertionmarkerpreviewer_class.previewreplacement_1_method.md) | | Display a connection preview where the draggedCon connects to the staticCon, replacing the replacedBlock (currently connected to the staticCon). |"]]
