text: /**
   * @license
   * Copyright 2016 Google LLC
   * SPDX-License-Identifier: Apache-2.0
   */
  
  /**
   * @fileoverview Blockly constants.
   * @author fenichel@google.com (Rachel Fenichel)
   */
  'use strict';
  
  goog.provide('Blockly.constants');
  
  goog.require('Blockly.connectionTypes');
  
  
  /**
   * The multiplier for scroll wheel deltas using the line delta mode.
   * @type {number}
   */
  Blockly.LINE_MODE_MULTIPLIER = 40;
  
  /**
   * The multiplier for scroll wheel deltas using the page delta mode.
   * @type {number}
   */
  Blockly.PAGE_MODE_MULTIPLIER = 125;
  
  /**
   * Number of pixels the mouse must move before a drag starts.
   */
  Blockly.DRAG_RADIUS = 3;
  
  /**
   * Number of pixels the mouse must move before a drag/scroll starts from the
   * flyout.  Because the drag-intention is determined when this is reached, it is
   * larger than Blockly.DRAG_RADIUS so that the drag-direction is clearer.
   */
  Blockly.FLYOUT_DRAG_RADIUS = 10;
  
  /**
   * Maximum misalignment between connections for them to snap together.
   */
  Blockly.SNAP_RADIUS = 48;
  
  /**
   * Maximum misalignment between connections for them to snap together,
   * when a connection is already highlighted.
   */
  Blockly.CONNECTING_SNAP_RADIUS = 96;
  
  /**
   * pxt-blockly Radius of circle that highlights connection points when dragging blocks.
   */
  Blockly.CONNECTION_INDICATOR_RADIUS = 9;
  
  /**
   * pxt-blockly: How much to prefer staying connected to the current connection over moving to
   * a new connection.  The current previewed connection is considered to be this
   * much closer to the matching connection on the block than it actually is.
   */
  Blockly.CURRENT_CONNECTION_PREFERENCE = 20;
  
  /**
   * Delay in ms between trigger and bumping unconnected block out of alignment.
   */
  Blockly.BUMP_DELAY = 0;
  
  /**
   * Maximum randomness in workspace units for bumping a block.
   */
  Blockly.BUMP_RANDOMNESS = 10;
  
  /**
   * Number of characters to truncate a collapsed block to.
   */
  Blockly.COLLAPSE_CHARS = 30;
  
  /**
   * Length in ms for a touch to become a long press.
   */
  Blockly.LONGPRESS = 750;
  
  /**
   * Prevent a sound from playing if another sound preceded it within this many
   * milliseconds.
   */
  Blockly.SOUND_LIMIT = 100;
  
  /**
   * When dragging a block out of a stack, split the stack in two (true), or drag
   * out the block healing the stack (false).
   */
  Blockly.DRAG_STACK = true;
  
  /**
   * The richness of block colours, regardless of the hue.
   * Must be in the range of 0 (inclusive) to 1 (exclusive).
   */
  Blockly.HSV_SATURATION = 0.45;
  
  /**
   * The intensity of block colours, regardless of the hue.
   * Must be in the range of 0 (inclusive) to 1 (exclusive).
   */
  Blockly.HSV_VALUE = 0.65;
  
  /**
   * Sprited icons and images.
   */
  Blockly.SPRITE = {
    width: 96,
    height: 124,
    url: 'sprites.png'
  };
  
  // Constants below this point are not intended to be changed.
  
  /**
   * Enum for alignment of inputs.
   * @enum {number}
   */
  Blockly.constants.ALIGN = {
    LEFT: -1,
    CENTRE: 0,
    RIGHT: 1
  };
  
  /**
   * ENUM for no drag operation.
   * @const
   */
  Blockly.DRAG_NONE = 0;
  
  /**
   * ENUM for inside the sticky DRAG_RADIUS.
   * @const
   */
  Blockly.DRAG_STICKY = 1;
  
  /**
   * ENUM for inside the non-sticky DRAG_RADIUS, for differentiating between
   * clicks and drags.
   * @const
   */
  Blockly.DRAG_BEGIN = 1;
  
  /**
   * ENUM for freely draggable (outside the DRAG_RADIUS, if one applies).
   * @const
   */
  Blockly.DRAG_FREE = 2;
  
  /**
   * pxt-blockly
   * ENUM for output shape: hexagonal (booleans/predicates).
   * @const
   */
  Blockly.OUTPUT_SHAPE_HEXAGONAL = 1;
  
  /**
   * pxt-blockly
   * ENUM for output shape: rounded (numbers).
   * @const
   */
  Blockly.OUTPUT_SHAPE_ROUND = 2;
  
  /**
   * pxt-blockly
   * ENUM for output shape: squared (any/all values; strings).
   * @const
   */
  Blockly.OUTPUT_SHAPE_SQUARE = 3;
  
  /**
   * Lookup table for determining the opposite type of a connection.
   * @const
   */
  Blockly.OPPOSITE_TYPE = [];
  Blockly.OPPOSITE_TYPE[Blockly.connectionTypes.INPUT_VALUE] =
      Blockly.connectionTypes.OUTPUT_VALUE;
  Blockly.OPPOSITE_TYPE[Blockly.connectionTypes.OUTPUT_VALUE] =
      Blockly.connectionTypes.INPUT_VALUE;
  Blockly.OPPOSITE_TYPE[Blockly.connectionTypes.NEXT_STATEMENT] =
      Blockly.connectionTypes.PREVIOUS_STATEMENT;
  Blockly.OPPOSITE_TYPE[Blockly.connectionTypes.PREVIOUS_STATEMENT] =
      Blockly.connectionTypes.NEXT_STATEMENT;
  
  /**
   * String for use in the "custom" attribute of a category in toolbox XML.
   * This string indicates that the category should be dynamically populated with
   * variable blocks.
   * @const {string}
   */
  Blockly.VARIABLE_CATEGORY_NAME = 'VARIABLE';
  /**
   * String for use in the "custom" attribute of a category in toolbox XML.
   * This string indicates that the category should be dynamically populated with
   * variable blocks.
   * @const {string}
   */
  Blockly.VARIABLE_DYNAMIC_CATEGORY_NAME = 'VARIABLE_DYNAMIC';
  
  /**
   * String for use in the "custom" attribute of a category in toolbox XML.
   * This string indicates that the category should be dynamically populated with
   * procedure blocks.
   * @const {string}
   */
  Blockly.PROCEDURE_CATEGORY_NAME = 'PROCEDURE';
  
  /**
   * String for use in the dropdown created in field_variable.
   * This string indicates that this option in the dropdown is 'Create
   * a variable...' and if selected, should trigger the prompt to create a variable.
   * @const {string}
   */
  Blockly.CREATE_VARIABLE_ID = 'CREATE_VARIABLE';
  
  /**
   * String for use in the dropdown created in field_variable.
   * This string indicates that this option in the dropdown is 'Rename
   * variable...' and if selected, should trigger the prompt to rename a variable.
   * @const {string}
   */
  Blockly.RENAME_VARIABLE_ID = 'RENAME_VARIABLE_ID';
  
  /**
   * String for use in the dropdown created in field_variable.
   * This string indicates that this option in the dropdown is 'Delete the "%1"
   * variable' and if selected, should trigger the prompt to delete a variable.
   * @const {string}
   */
  Blockly.DELETE_VARIABLE_ID = 'DELETE_VARIABLE_ID';
  
  /**
   * pxt-blockly
   * The type of all procedure definition blocks.
   * @const {string}
   */
  Blockly.FUNCTION_DEFINITION_BLOCK_TYPE = 'function_definition';
  
  /**
   * pxt-blockly
   * The type of all procedure declaration blocks.
   * @const {string}
   */
  Blockly.FUNCTION_DECLARATION_BLOCK_TYPE = 'function_declaration';
  
  /**
   * pxt-blockly
   * The type of all procedure call blocks.
   * @const {string}
   */
  Blockly.FUNCTION_CALL_BLOCK_TYPE = 'function_call';
  
  /**
   * pxt-blockly
   * The type of all procedure call blocks with return values.
   * @const {string}
   */
  Blockly.FUNCTION_CALL_OUTPUT_BLOCK_TYPE = 'function_call_output';
  
  /**
   * The language-neutral ID given to the collapsed input.
   * @const {string}
   */
  Blockly.constants.COLLAPSED_INPUT_NAME = '_TEMP_COLLAPSED_INPUT';
  
  /**
   * The language-neutral ID given to the collapsed field.
   * @const {string}
   */
  Blockly.constants.COLLAPSED_FIELD_NAME = '_TEMP_COLLAPSED_FIELD';
  