Add attributes to plot schema

Author: hannahker

src/components/legend/attributes.js

@@ -168,6 +168,17 @@ module.exports = {
             'defaults to *0* for horizontal legends.'
         ].join(' ')
     },
+    xref: {
+        valType: 'enumerated',
+        dflt: 'container',
+        values: ['container', 'paper'],
+        editType: 'layoutstyle',
+        description: [
+            'Sets the container `x` refers to.',
+            '*container* spans the entire `width` of the plot.',
+            '*paper* refers to the width of the plotting area only.'
+        ].join(' ')
+    },
     xanchor: {
         valType: 'enumerated',
         values: ['auto', 'left', 'center', 'right'],
@@ -194,6 +205,17 @@ module.exports = {
             'defaults to *1.1* for horizontal legends on graph with one or multiple range sliders.'
         ].join(' ')
     },
+    yref: {
+        valType: 'enumerated',
+        dflt: 'container',
+        values: ['container', 'paper'],
+        editType: 'layoutstyle',
+        description: [
+            'Sets the container `y` refers to.',
+            '*container* spans the entire `height` of the plot.',
+            '*paper* refers to the height of the plotting area only.'
+        ].join(' ')
+    },
     yanchor: {
         valType: 'enumerated',
         values: ['auto', 'top', 'middle', 'bottom'],

test/plot-schema.json

@@ -2982,6 +2982,16 @@
       "right"
      ]
     },
+    "xref": {
+     "description": "Sets the container `x` refers to. *container* spans the entire `width` of the plot. *paper* refers to the width of the plotting area only.",
+     "dflt": "container",
+     "editType": "layoutstyle",
+     "valType": "enumerated",
+     "values": [
+      "container",
+      "paper"
+     ]
+    },
     "y": {
      "description": "Sets the y position (in normalized coordinates) of the legend. Defaults to *1* for vertical legends, defaults to *-0.1* for horizontal legends on graphs w/o range sliders and defaults to *1.1* for horizontal legends on graph with one or multiple range sliders.",
      "editType": "legend",
@@ -2999,6 +3009,16 @@
       "middle",
       "bottom"
      ]
+    },
+    "yref": {
+     "description": "Sets the container `y` refers to. *container* spans the entire `height` of the plot. *paper* refers to the height of the plotting area only.",
+     "dflt": "container",
+     "editType": "layoutstyle",
+     "valType": "enumerated",
+     "values": [
+      "container",
+      "paper"
+     ]
     }
    },
    "mapbox": {