Allowed passing customized icon for completed steps in Stepper

.changeset/curly-bikes-protect.md

@@ -0,0 +1,5 @@
+---
+'@itwin/itwinui-react': minor
+---
+
+`Stepper` now allows users to pass in custom icon or content in each step circle to indicate step completion.

apps/react-workshop/src/Stepper.stories.tsx

@@ -3,6 +3,7 @@
  * See LICENSE.md in the project root for license terms and full copyright notice.
  *--------------------------------------------------------------------------------------------*/
 import { Stepper, type StepperLocalization } from '@itwin/itwinui-react';
+import { SvgCheckmarkSmall } from '@itwin/itwinui-icons-react';
 
 export default {
   title: 'Stepper',
@@ -27,6 +28,26 @@ export const Basic = () => {
   );
 };
 
+export const CustomIcon = () => {
+  const onStepClick = (index: number) => {
+    console.log(`Clicked index: ${index}`);
+  };
+  return (
+    <Stepper
+      currentStep={2}
+      steps={[
+        { name: 'First Step' },
+        { name: 'Completed Step' },
+        { name: 'Current Step' },
+        { name: 'Next Step' },
+        { name: 'Last Step' },
+      ]}
+      stepCircleRenderer={() => <SvgCheckmarkSmall />}
+      onStepClick={onStepClick}
+    />
+  );
+};
+
 export const Long = () => {
   const onStepClick = (index: number) => {
     console.log(`Clicked index: ${index}`);

apps/website/src/content/docs/stepper.mdx

@@ -60,6 +60,14 @@ The ‘Step X of X’ label that appears in the default long stepper can be repl
   <AllExamples.StepperLocalizationExample client:load />
 </LiveExample>
 
+### Custom Icon
+
+By default, each step circle displays the step number. However, end users can customize the icon or content shown for completed steps in the `Stepper` component by using the `stepCircleRenderer` prop. This prop accepts a function that takes the step index and returns the custom content to represent step completion.
+
+<LiveExample src='Stepper.customIcon.jsx'>
+  <AllExamples.StepperCustomIconExample client:load />
+</LiveExample>
+
 ### Layout
 
 We recommend the following layout:

examples/Stepper.customIcon.css

@@ -0,0 +1,15 @@
+.demo-container {
+  min-width: min(100%, 400px);
+  display: flex;
+  flex-direction: column;
+  gap: var(--iui-size-m);
+}
+
+.demo-stepper {
+  align-self: stretch;
+}
+
+.demo-button-container {
+  display: flex;
+  gap: var(--iui-size-xs);
+}

examples/Stepper.customIcon.jsx

@@ -0,0 +1,53 @@
+/*---------------------------------------------------------------------------------------------
+ * Copyright (c) Bentley Systems, Incorporated. All rights reserved.
+ * See LICENSE.md in the project root for license terms and full copyright notice.
+ *--------------------------------------------------------------------------------------------*/
+import * as React from 'react';
+import { Button, Stepper } from '@itwin/itwinui-react';
+import { SvgCheckmarkSmall } from '@itwin/itwinui-icons-react';
+
+const steps = [
+  { name: 'First Step' },
+  { name: 'Second Step' },
+  { name: 'Third Step' },
+  { name: 'Last Step' },
+];
+
+export default () => {
+  const [currentStep, setCurrentStep] = React.useState(2);
+
+  return (
+    <div className='demo-container'>
+      <div className='demo-stepper'>
+        <Stepper
+          currentStep={currentStep}
+          steps={steps}
+          onStepClick={(index) => {
+            setCurrentStep(index);
+          }}
+          stepCircleRenderer={() => <SvgCheckmarkSmall />}
+        />
+      </div>
+
+      <div className='demo-button-container'>
+        <Button
+          disabled={currentStep === 0}
+          onClick={() => {
+            if (currentStep !== 0) setCurrentStep(currentStep - 1);
+          }}
+        >
+          Previous
+        </Button>
+        <Button
+          styleType='cta'
+          disabled={currentStep === steps.length - 1}
+          onClick={() => {
+            if (currentStep < steps.length - 1) setCurrentStep(currentStep + 1);
+          }}
+        >
+          Next
+        </Button>
+      </div>
+    </div>
+  );
+};

examples/index.tsx

@@ -1136,6 +1136,10 @@ import { default as StepperMainExampleRaw } from './Stepper.main';
 const StepperMainExample = withThemeProvider(StepperMainExampleRaw);
 export { StepperMainExample };
 
+import { default as StepperCustomIconExampleRaw } from './Stepper.customIcon';
+const StepperCustomIconExample = withThemeProvider(StepperCustomIconExampleRaw);
+export { StepperCustomIconExample };
+
 import { default as StepperShortExampleRaw } from './Stepper.short';
 const StepperShortExample = withThemeProvider(StepperShortExampleRaw);
 export { StepperShortExample };

packages/itwinui-css/src/stepper/stepper.scss

@@ -18,6 +18,7 @@
   --_iui-stepper-step-background-color: var(--iui-color-background);
   --_iui-stepper-step-border-color: var(--iui-color-border-positive);
   --_iui-stepper-step-number-color: var(--iui-color-text-positive);
+  --_iui-stepper-step-icon-color: var(--iui-color-text-positive);
   --_iui-stepper-step-text-color: var(--iui-color-text-positive);
   --_iui-stepper-step-track-before-color: var(--iui-color-border-positive);
   --_iui-stepper-step-track-after-color: var(--iui-color-border-positive);
@@ -82,6 +83,10 @@
   background-color: var(--_iui-stepper-step-background-color);
   color: var(--_iui-stepper-step-number-color);
 
+  :is(svg, img) {
+    fill: var(--_iui-stepper-step-icon-color);
+  }
+
   .iui-clickable & {
     cursor: pointer;
     transition:
@@ -93,6 +98,7 @@
       --_iui-stepper-step-background-color: var(--iui-color-background-positive);
       --_iui-stepper-step-border-color: var(--iui-color-background-positive);
       --_iui-stepper-step-number-color: var(--iui-color-white);
+      --_iui-stepper-step-icon-color: var(--iui-color-white);
     }
   }
 

packages/itwinui-react/src/core/Stepper/Stepper.test.tsx

@@ -4,6 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 import { screen, render, fireEvent, act } from '@testing-library/react';
 import { Stepper } from './Stepper.js';
+import { SvgCheckmarkSmall } from '../../utils/index.js';
 
 it('should render all step names and numbers in default stepper', () => {
   const stepper = (
@@ -69,6 +70,34 @@ it('should add custom props to Stepper', () => {
   ).toBeTruthy();
 });
 
+it('should pass custom icon for completed steps', () => {
+  const stepper = (
+    <Stepper
+      currentStep={2}
+      steps={[
+        {
+          name: 'Step One',
+        },
+        {
+          name: 'Step Two',
+        },
+        {
+          name: 'Step Three',
+        },
+      ]}
+      stepCircleRenderer={() => (
+        <span className={`test-icon`}>
+          <SvgCheckmarkSmall />
+        </span>
+      )}
+    />
+  );
+
+  const { container } = render(stepper);
+  const completedSteps = container.querySelectorAll('.test-icon');
+  expect(completedSteps).toHaveLength(2);
+});
+
 it('should set the active step to the step provided and raises onClick event on completed steps', () => {
   const mockedOnClick = vi.fn();
   const stepper = (

packages/itwinui-react/src/core/Stepper/Stepper.tsx

@@ -41,6 +41,10 @@ export type StepperProps = {
    *  Option to provide localized strings.
    */
   localization?: StepperLocalization;
+  /**
+   * Custom content passed for completed steps.
+   */
+  stepCircleRenderer?: (completedIndex: number) => React.ReactNode;
   /**
    *  Click handler on completed step.
    */
@@ -82,6 +86,7 @@ export const Stepper = React.forwardRef((props, ref) => {
     steps,
     type = 'default',
     localization = defaultStepperLocalization,
+    stepCircleRenderer,
     onStepClick,
     stepProps,
     trackContentProps,
@@ -119,6 +124,7 @@ export const Stepper = React.forwardRef((props, ref) => {
               type={type}
               onClick={onStepClick}
               description={s.description}
+              stepCircleRenderer={stepCircleRenderer}
             />
           );
         })}

packages/itwinui-react/src/core/Stepper/StepperStep.tsx

@@ -37,6 +37,10 @@ export type StepperStepProps = {
    * A tooltip giving detailed description to this step.
    */
   description?: string;
+  /**
+   * Custom content passed for completed step.
+   */
+  stepCircleRenderer?: (index: number) => React.ReactNode;
   /**
    * Allows props to be passed for stepper step.
    */
@@ -70,6 +74,7 @@ export const StepperStep = React.forwardRef((props, forwardedRef) => {
     trackContentProps,
     circleProps,
     nameProps,
+    stepCircleRenderer,
     ...rest
   } = props;
 
@@ -132,7 +137,7 @@ export const StepperStep = React.forwardRef((props, forwardedRef) => {
           {...circleProps}
           className={cx('iui-stepper-circle', circleProps?.className)}
         >
-          {index + 1}
+          {stepCircleRenderer && isPast ? stepCircleRenderer(index) : index + 1}
         </Box>
       </Box>