text: /**
   * @license
   * Copyright 2019 Google LLC
   * SPDX-License-Identifier: Apache-2.0
   */
  
  /**
   * @fileoverview Zelos renderer.
   * @author fenichel@google.com (Rachel Fenichel)
   */
  'use strict';
  
  goog.provide('Blockly.zelos.Renderer');
  
  goog.require('Blockly.blockRendering');
  goog.require('Blockly.blockRendering.Renderer');
  goog.require('Blockly.InsertionMarkerManager');
  goog.require('Blockly.utils.object');
  goog.require('Blockly.zelos.ConstantProvider');
  goog.require('Blockly.zelos.Drawer');
  goog.require('Blockly.zelos.PathObject');
  goog.require('Blockly.zelos.RenderInfo');
  goog.require('Blockly.zelos.MarkerSvg');
  
  
  /**
   * The zelos renderer.
   * @param {string} name The renderer name.
   * @package
   * @constructor
   * @extends {Blockly.blockRendering.Renderer}
   */
  Blockly.zelos.Renderer = function(name) {
    Blockly.zelos.Renderer.superClass_.constructor.call(this, name);
  };
  Blockly.utils.object.inherits(Blockly.zelos.Renderer,
      Blockly.blockRendering.Renderer);
  
  /**
   * Create a new instance of the renderer's constant provider.
   * @return {!Blockly.zelos.ConstantProvider} The constant provider.
   * @protected
   * @override
   */
  Blockly.zelos.Renderer.prototype.makeConstants_ = function() {
    return new Blockly.zelos.ConstantProvider();
  };
  
  /**
   * Create a new instance of the renderer's render info object.
   * @param {!Blockly.BlockSvg} block The block to measure.
   * @return {!Blockly.zelos.RenderInfo} The render info object.
   * @protected
   * @override
   */
  Blockly.zelos.Renderer.prototype.makeRenderInfo_ = function(block) {
    return new Blockly.zelos.RenderInfo(this, block);
  };
  
  /**
   * Create a new instance of the renderer's drawer.
   * @param {!Blockly.BlockSvg} block The block to render.
   * @param {!Blockly.blockRendering.RenderInfo} info An object containing all
   *   information needed to render this block.
   * @return {!Blockly.zelos.Drawer} The drawer.
   * @protected
   * @override
   */
  Blockly.zelos.Renderer.prototype.makeDrawer_ = function(block, info) {
    return new Blockly.zelos.Drawer(block,
        /** @type {!Blockly.zelos.RenderInfo} */ (info));
  };
  
  /**
   * Create a new instance of the renderer's cursor drawer.
   * @param {!Blockly.WorkspaceSvg} workspace The workspace the cursor belongs to.
   * @param {!Blockly.Marker} marker The marker.
   * @return {!Blockly.blockRendering.MarkerSvg} The object in charge of drawing
   *     the marker.
   * @package
   * @override
   */
  Blockly.zelos.Renderer.prototype.makeMarkerDrawer = function(
      workspace, marker) {
    return new Blockly.zelos.MarkerSvg(workspace, this.getConstants(), marker);
  };
  
  /**
   * Create a new instance of a renderer path object.
   * @param {!SVGElement} root The root SVG element.
   * @param {!Blockly.Theme.BlockStyle} style The style object to use for
   *     colouring.
   * @return {!Blockly.zelos.PathObject} The renderer path object.
   * @package
   * @override
   */
  Blockly.zelos.Renderer.prototype.makePathObject = function(root, style) {
    return new Blockly.zelos.PathObject(root, style,
        /** @type {!Blockly.zelos.ConstantProvider} */ (this.getConstants()));
  };
  
  /**
   * @override
   */
  Blockly.zelos.Renderer.prototype.shouldHighlightConnection = function(conn) {
    return conn.type != Blockly.INPUT_VALUE && conn.type !== Blockly.OUTPUT_VALUE;
  };
  
  /**
   * @override
   */
  Blockly.zelos.Renderer.prototype.getConnectionPreviewMethod =
      function(closest, local, topBlock) {
        if (local.type == Blockly.OUTPUT_VALUE) {
          if (!closest.isConnected()) {
            return Blockly.InsertionMarkerManager.PREVIEW_TYPE.INPUT_OUTLINE;
          }
          // TODO: Returning this is a total hack, because we don't want to show
          //   a replacement fade, we want to show an outline affect.
          //   Sadly zelos does not support showing an outline around filled
          //   inputs, so we have to pretend like the connected block is getting
          //   replaced.
          return Blockly.InsertionMarkerManager.PREVIEW_TYPE.REPLACEMENT_FADE;
        }
  
        return Blockly.zelos.Renderer.superClass_
            .getConnectionPreviewMethod(closest, local, topBlock);
      };
  
  Blockly.blockRendering.register('zelos', Blockly.zelos.Renderer);
  