feat(toggleRefinement): implement canRefine (#4689)

Author: Eunjae Lee

src/connectors/toggle-refinement/__tests__/connectToggleRefinement-test.js

@@ -881,6 +881,7 @@ See documentation: https://www.algolia.com/doc/api-reference/widgets/toggle-refi
 
       expect(renderState.toggleRefinement).toEqual({
         createURL: expect.any(Function),
+        canRefine: false,
         refine: expect.any(Function),
         sendEvent: expect.any(Function),
         state: helper.state,
@@ -927,6 +928,7 @@ See documentation: https://www.algolia.com/doc/api-reference/widgets/toggle-refi
 
       expect(renderState.toggleRefinement).toEqual({
         createURL: expect.any(Function),
+        canRefine: true,
         refine: expect.any(Function),
         sendEvent: expect.any(Function),
         state: helper.state,
@@ -974,6 +976,7 @@ See documentation: https://www.algolia.com/doc/api-reference/widgets/toggle-refi
 
       expect(renderState).toEqual({
         createURL: expect.any(Function),
+        canRefine: false,
         refine: expect.any(Function),
         sendEvent: expect.any(Function),
         state: helper.state,
@@ -1019,6 +1022,7 @@ See documentation: https://www.algolia.com/doc/api-reference/widgets/toggle-refi
 
       expect(renderState).toEqual({
         createURL: expect.any(Function),
+        canRefine: true,
         refine: expect.any(Function),
         sendEvent: expect.any(Function),
         state: helper.state,

src/connectors/toggle-refinement/connectToggleRefinement.js

@@ -61,6 +61,7 @@ const createSendEvent = ({ instantSearchInstance, attribute, on, helper }) => (
  * @typedef {Object} ToggleRenderingOptions
  * @property {ToggleValue} value The current toggle value.
  * @property {function():string} createURL Creates an URL for the next state.
+ * @property {boolean} canRefine Indicates if search state can be refined.
  * @property {function(value)} refine Updates to the next state by applying the toggle refinement.
  * @property {Object} widgetParams All original `CustomToggleWidgetParams` forwarded to the `renderFn`.
  */
@@ -308,6 +309,7 @@ export default function connectToggleRefinement(renderFn, unmountFn = noop) {
             createURL,
           }),
           sendEvent,
+          canRefine: Boolean(results ? nextRefinement.count : null),
           refine: toggleRefinementFactory(helper),
           widgetParams,
         };