Added ui:enumDisabled to RadioWidget.js (#1028)

* Added ui:enumDisabled to RadioWidget.js

* cs-format

* Added a test and fixed the disabled state

src/components/widgets/RadioWidget.js

@@ -13,14 +13,17 @@ function RadioWidget(props) {
   } = props;
   // Generating a unique field name to identify this set of radio buttons
   const name = Math.random().toString();
-  const { enumOptions, inline } = options;
+  const { enumOptions, enumDisabled, inline } = options;
   // checked={checked} has been moved above name={name}, As mentioned in #349;
   // this is a temporary fix for radio button rendering bug in React, facebook/react#7630.
   return (
     <div className="field-radio-group">
       {enumOptions.map((option, i) => {
         const checked = option.value === value;
-        const disabledCls = disabled || readonly ? "disabled" : "";
+        const itemDisabled =
+          enumDisabled && enumDisabled.indexOf(option.value) != -1;
+        const disabledCls =
+          disabled || itemDisabled || readonly ? "disabled" : "";
         const radio = (
           <span>
             <input
@@ -29,7 +32,7 @@ function RadioWidget(props) {
               name={name}
               required={required}
               value={option.value}
-              disabled={disabled || readonly}
+              disabled={disabled || itemDisabled || readonly}
               autoFocus={autofocus && i === 0}
               onChange={_ => onChange(option.value)}
             />

test/uiSchema_test.js

@@ -2,6 +2,7 @@ import { expect } from "chai";
 import React from "react";
 import { Simulate } from "react-addons-test-utils";
 import SelectWidget from "../src/components/widgets/SelectWidget";
+import RadioWidget from "../src/components/widgets/RadioWidget";
 import { createFormComponent, createSandbox } from "./test_utils";
 
 describe("uiSchema", () => {
@@ -439,6 +440,38 @@ describe("uiSchema", () => {
         );
       });
     });
+
+    describe("enum fields disabled radio options", () => {
+      const schema = {
+        type: "object",
+        properties: {
+          field: {
+            type: "string",
+            enum: ["foo", "bar"],
+          },
+        },
+      };
+      const uiSchema = {
+        field: {
+          "ui:widget": RadioWidget,
+          "ui:options": {
+            className: "custom",
+          },
+          "ui:enumDisabled": ["foo"],
+        },
+      };
+      it("should have atleast one radio option disabled", () => {
+        const { node } = createFormComponent({ schema, uiSchema });
+        const disabledOptionsLen = uiSchema.field["ui:enumDisabled"].length;
+        expect(node.querySelectorAll("input:disabled")).to.have.length.of(
+          disabledOptionsLen
+        );
+        expect(node.querySelectorAll("input:enabled")).to.have.length.of(
+          // Two options, one disabled, plus the placeholder
+          2 - disabledOptionsLen
+        );
+      });
+    });
   });
 
   describe("ui:help", () => {