Restore extendFlat call for xref and yref

Author: alexshoe

src/components/shapes/attributes.js

@@ -8,6 +8,7 @@ var extendFlat = require('../../lib/extend').extendFlat;
 var templatedArray = require('../../plot_api/plot_template').templatedArray;
 var axisPlaceableObjs = require('../../constants/axis_placeable_objects');
 var basePlotAttributes = require('../../plots/attributes');
+var annAttrs = require('../annotations/attributes');
 const { shapeTexttemplateAttrs, templatefallbackAttrs } = require('../../plots/template_attributes');
 var shapeLabelTexttemplateVars = require('./label_texttemplate');
 
@@ -114,21 +115,15 @@ module.exports = templatedArray('shape', {
         ].join(' ')
     },
 
-    xref: {
+    xref: extendFlat({}, annAttrs.xref, {
         arrayOk: true,
-        valType: 'enumerated',
-        values: [
-            'paper',
-            cartesianConstants.idRegex.x.toString()
-        ],
-        editType: 'calc',
         description: [
             "Sets the shape's x coordinate axis.",
             axisPlaceableObjs.axisRefDescription('x', 'left', 'right'),
             'If an array of axis IDs is provided, each `x` value will refer to the corresponding axis',
             '(e.g., [\'x\', \'x2\'] for a rectangle means `x0` uses the `x` axis and `x1` uses the `x2` axis).',
         ].join(' ')
-    },
+    }),
     xsizemode: {
         valType: 'enumerated',
         values: ['scaled', 'pixel'],
@@ -191,21 +186,15 @@ module.exports = templatedArray('shape', {
             'corresponds to the end of the category.'
         ].join(' ')
     },
-    yref: {
+    yref: extendFlat({}, annAttrs.yref, {
         arrayOk: true,
-        valType: 'enumerated',
-        values: [
-            'paper',
-            cartesianConstants.idRegex.y.toString()
-        ],
-        editType: 'calc',
         description: [
             "Sets the shape's y coordinate axis.",
             axisPlaceableObjs.axisRefDescription('y', 'bottom', 'top'),
             'If an array of axis IDs is provided, each `y` value will refer to the corresponding axis',
             '(e.g., [\'y\', \'y2\'] for a rectangle means `y0` uses the `y` axis and `y1` uses the `y2` axis).',
         ].join(' ')
-    },
+    }),
     ysizemode: {
         valType: 'enumerated',
         values: ['scaled', 'pixel'],