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62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
/**
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* @license
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* Copyright 2021 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview The interface for a block dragger.
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* @author aschmiedt@google.com (Abby Schmiedt)
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*/
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'use strict';
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goog.module('Blockly.IBlockDragger');
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goog.module.declareLegacyNamespace();
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const BlockSvg = goog.requireType('Blockly.BlockSvg');
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const Coordinate = goog.requireType('Blockly.utils.Coordinate');
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/**
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* A block dragger interface.
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* @interface
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*/
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const IBlockDragger = function() {};
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/**
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* Start dragging a block. This includes moving it to the drag surface.
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* @param {!Coordinate} currentDragDeltaXY How far the pointer has
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* moved from the position at mouse down, in pixel units.
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* @param {boolean} healStack Whether or not to heal the stack after
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* disconnecting.
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*/
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IBlockDragger.prototype.startDrag;
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/**
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* Execute a step of block dragging, based on the given event. Update the
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* display accordingly.
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* @param {!Event} e The most recent move event.
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* @param {!Coordinate} currentDragDeltaXY How far the pointer has
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* moved from the position at the start of the drag, in pixel units.
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*/
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IBlockDragger.prototype.drag;
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/**
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* Finish a block drag and put the block back on the workspace.
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* @param {!Event} e The mouseup/touchend event.
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* @param {!Coordinate} currentDragDeltaXY How far the pointer has
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* moved from the position at the start of the drag, in pixel units.
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*/
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IBlockDragger.prototype.endDrag;
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/**
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* Get a list of the insertion markers that currently exist. Drags have 0, 1,
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* or 2 insertion markers.
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* @return {!Array.<!BlockSvg>} A possibly empty list of insertion
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* marker blocks.
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*/
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IBlockDragger.prototype.getInsertionMarkers;
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exports = IBlockDragger;
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