text: /**
  * Copyright 2012-2018, Plotly, Inc.
  * All rights reserved.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
  
  'use strict';
  
  var Lib = require('../../lib');
  var attributes = require('./attributes');
  var handleDomainDefaults = require('../../plots/domain').defaults;
  
  module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
      function coerce(attr, dflt) {
          return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
      }
  
      var coerceFont = Lib.coerceFont;
      var len;
  
      var vals = coerce('values');
      var hasVals = Lib.isArrayOrTypedArray(vals);
      var labels = coerce('labels');
      if(Array.isArray(labels)) {
          len = labels.length;
          if(hasVals) len = Math.min(len, vals.length);
      }
      else if(hasVals) {
          len = vals.length;
  
          coerce('label0');
          coerce('dlabel');
      }
  
      if(!len) {
          traceOut.visible = false;
          return;
      }
      traceOut._length = len;
  
      var lineWidth = coerce('marker.line.width');
      if(lineWidth) coerce('marker.line.color');
  
      coerce('marker.colors');
  
      coerce('scalegroup');
      // TODO: hole needs to be coerced to the same value within a scaleegroup
  
      var textData = coerce('text');
      var textInfo = coerce('textinfo', Array.isArray(textData) ? 'text+percent' : 'percent');
      coerce('hovertext');
  
      if(textInfo && textInfo !== 'none') {
          var textPosition = coerce('textposition'),
              hasBoth = Array.isArray(textPosition) || textPosition === 'auto',
              hasInside = hasBoth || textPosition === 'inside',
              hasOutside = hasBoth || textPosition === 'outside';
  
          if(hasInside || hasOutside) {
              var dfltFont = coerceFont(coerce, 'textfont', layout.font);
              if(hasInside) coerceFont(coerce, 'insidetextfont', dfltFont);
              if(hasOutside) coerceFont(coerce, 'outsidetextfont', dfltFont);
          }
      }
  
      handleDomainDefaults(traceOut, layout, coerce);
  
      var hole = coerce('hole');
      var title = coerce('title');
      if(title) {
          var titlePosition = coerce('titleposition', hole ? 'middle center' : 'top center');
          if(!hole && titlePosition === 'middle center') traceOut.titleposition = 'top center';
          coerceFont(coerce, 'titlefont', layout.font);
      }
  
      coerce('sort');
      coerce('direction');
      coerce('rotation');
  
      coerce('pull');
  };
  