text: /**
  * Copyright 2012-2017, 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 constants = require('./constants');
  var subTypes = require('./subtypes');
  var handleXYDefaults = require('./xy_defaults');
  var handleMarkerDefaults = require('./marker_defaults');
  var handleLineDefaults = require('./line_defaults');
  var handleLineShapeDefaults = require('./line_shape_defaults');
  var handleTextDefaults = require('./text_defaults');
  var handleFillColorDefaults = require('./fillcolor_defaults');
  var errorBarsSupplyDefaults = require('../../components/errorbars/defaults');
  
  module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
      function coerce(attr, dflt) {
          return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
      }
  
      var len = handleXYDefaults(traceIn, traceOut, layout, coerce),
          // TODO: default mode by orphan points...
          defaultMode = len < constants.PTS_LINESONLY ? 'lines+markers' : 'lines';
      if(!len) {
          traceOut.visible = false;
          return;
      }
  
      coerce('text');
      coerce('hovertext');
      coerce('mode', defaultMode);
  
      if(subTypes.hasLines(traceOut)) {
          handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
          handleLineShapeDefaults(traceIn, traceOut, coerce);
          coerce('connectgaps');
          coerce('line.simplify');
      }
  
      if(subTypes.hasMarkers(traceOut)) {
          handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerce, {gradient: true});
      }
  
      if(subTypes.hasText(traceOut)) {
          handleTextDefaults(traceIn, traceOut, layout, coerce);
      }
  
      var dfltHoverOn = [];
  
      if(subTypes.hasMarkers(traceOut) || subTypes.hasText(traceOut)) {
          coerce('marker.maxdisplayed');
          dfltHoverOn.push('points');
      }
  
      coerce('fill');
      if(traceOut.fill !== 'none') {
          handleFillColorDefaults(traceIn, traceOut, defaultColor, coerce);
          if(!subTypes.hasLines(traceOut)) handleLineShapeDefaults(traceIn, traceOut, coerce);
      }
  
      if(traceOut.fill === 'tonext' || traceOut.fill === 'toself') {
          dfltHoverOn.push('fills');
      }
      coerce('hoveron', dfltHoverOn.join('+') || 'points');
  
      errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'y'});
      errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
  
      coerce('cliponaxis');
  
      Lib.coerceSelectionMarkerOpacity(traceOut, coerce);
  };
  