we don't reuse scatter files ... because partialy impelemented

Author: ErwanMAS

src/traces/scattergl/attributes.js

@@ -54,8 +54,17 @@ var attrs = module.exports = overrideAll({
     line: {
         color: scatterLineAttrs.color,
         width: scatterLineAttrs.width,
-        shape: scatterLineAttrs.shape,
-        smoothing: scatterLineAttrs.smoothing,
+        shape: {
+            valType: 'enumerated',
+            values: ['linear', 'hv', 'vh', 'hvh', 'vhv'],
+            dflt: 'linear',
+            role: 'style',
+            editType: 'plot',
+            description: [
+                'Determines the line shape.',
+                'The values correspond to step-wise line shapes.'
+            ].join(' ')
+        },
         dash: {
             valType: 'enumerated',
             values: Object.keys(DASHES),

src/traces/scattergl/defaults.js

@@ -17,7 +17,7 @@ var subTypes = require('../scatter/subtypes');
 var handleXYDefaults = require('../scatter/xy_defaults');
 var handleMarkerDefaults = require('../scatter/marker_defaults');
 var handleLineDefaults = require('../scatter/line_defaults');
-var handleLineShapeDefaults = require('../scatter/line_shape_defaults');
+var handleLineShapeDefaults = require('./line_shape_defaults');
 var handleFillColorDefaults = require('../scatter/fillcolor_defaults');
 var handleTextDefaults = require('../scatter/text_defaults');
 

src/traces/scattergl/line_shape_defaults.js

@@ -0,0 +1,15 @@
+/**
+* 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';
+
+module.exports = function handleLineShapeDefaults(traceIn, traceOut, coerce) {
+    var shape = coerce('line.shape');
+};
+