Blockly.WorkspaceCommentSvg.prototype.render = function()

in core/workspace_comment_render_svg.js [102:210]
85 lines of code
14 McCabe index (conditional complexity)

Blockly.WorkspaceCommentSvg.prototype.render = function() {
  if (this.rendered_) {
    return;
  }

  var size = this.getHeightWidth();

  // Add text area
  if (!this.isEditable() || Blockly.utils.userAgent.IE) {
    this.createUneditableText_()
    this.svgGroup_.appendChild(this.uneditableTextGroup_);
  } else {
    this.commentEditor_ = this.createEditor_();
    this.svgGroup_.appendChild(this.commentEditor_);
  }

  var backdrop = this.commentEditor_ || this.uneditableTextGroup_;

  this.svgHandleTarget_ = Blockly.utils.dom.createSvgElement(
      Blockly.utils.Svg.RECT,
      // pxt-blockly: Custom comment rendering
      {
        'class': 'blocklyCommentHandleTarget',
        'fill': 'transparent',
        'rx': Blockly.WorkspaceCommentSvg.BORDER_WIDTH,
        'ry': Blockly.WorkspaceCommentSvg.BORDER_WIDTH,
        'height': Blockly.WorkspaceCommentSvg.TOP_BAR_HEIGHT
      }, this.svgGroup_);
  this.svgGroup_.appendChild(this.svgHandleTarget_);
  this.svgRectTarget_ = Blockly.utils.dom.createSvgElement(
      Blockly.utils.Svg.RECT,
      {
        'class': 'blocklyDraggable blocklyCommentTarget',
        'x': 0,
        'y': 0,
        'rx': 4 * Blockly.WorkspaceCommentSvg.BORDER_WIDTH,
        'ry': 4 * Blockly.WorkspaceCommentSvg.BORDER_WIDTH
      }, this.svgGroup_);

  if (this.isEditable() && !Blockly.utils.userAgent.IE) {
    // Add the resize icon
    this.addResizeDom_();
    // pxt-blockly: Custom workspace comment delete rendering
    // if (this.isDeletable()) {
    //   // Add the delete icon
    //   this.addDeleteDom_();
    // }
  }

  this.createTopBarIcons_();
  this.createTopBarLabel_();

  // Show / hide relevant things based on minimized state
  if (this.isMinimized()) {
    this.minimizeArrow_.setAttributeNS('http://www.w3.org/1999/xlink',
        'xlink:href', Blockly.mainWorkspace.options.pathToMedia + 'comment-arrow-up.svg');
    backdrop.setAttribute('display', 'none');
    this.resizeGroup_.setAttribute('display', 'none');
  } else {
    this.minimizeArrow_.setAttributeNS('http://www.w3.org/1999/xlink',
        'xlink:href', Blockly.mainWorkspace.options.pathToMedia + 'comment-arrow-down.svg');
    this.topBarLabel_.setAttribute('display', 'none');
  }

  // Set the content
  if (this.textarea_) {
    this.textarea_.value = this.content_;
  } else {
    // Split up the text content into multiple lines
    for (var i = 0; i < this.content_.length; i += Blockly.WorkspaceCommentSvg.UNEDITABLE_TEXT_LENGTH) {
        var line = this.content_.substring(i, i + Blockly.WorkspaceCommentSvg.UNEDITABLE_TEXT_LENGTH);
        this.pushUneditableTextLine_(line);
    }
  }

  if (this.isEditable() && !Blockly.utils.userAgent.IE) {
    this.setSize(size.width, size.height);
  } else {
    var width = Blockly.WorkspaceCommentSvg.UNEDITABLE_TEXT_LENGTH * 8;
    width += 25;
    var height = this.uneditableTextLineY - 10;
    this.setSize(width, height);
  }

  this.rendered_ = true;

  if (this.resizeGroup_) {
    Blockly.browserEvents.conditionalBind(
        this.resizeGroup_, 'mousedown', this, this.resizeMouseDown_);
    Blockly.bindEventWithChecks_(
        this.resizeGroup_, 'mouseup', this, this.resizeMouseUp_);
  }

  Blockly.bindEventWithChecks_(
      this.minimizeArrow_, 'mousedown', this, this.minimizeArrowMouseDown_);
  Blockly.bindEventWithChecks_(
      this.minimizeArrow_, 'mouseout', this, this.minimizeArrowMouseOut_);
  Blockly.bindEventWithChecks_(
      this.minimizeArrow_, 'mouseup', this, this.minimizeArrowMouseUp_);

  if (this.isDeletable()) {
    Blockly.browserEvents.conditionalBind(
        this.deleteGroup_, 'mousedown', this, this.deleteMouseDown_);
    Blockly.browserEvents.conditionalBind(
        this.deleteGroup_, 'mouseout', this, this.deleteMouseOut_);
    Blockly.browserEvents.conditionalBind(
        this.deleteGroup_, 'mouseup', this, this.deleteMouseUp_);
  }
};