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 +28,24 @@ export const Basic = () => {
   );
 };
 
+export const CustomIcon = () => {
+  const onStepClick = (index: number) => {
+    console.log(`Clicked index: ${index}`);
+  };
+  return (
+    <Stepper
+      currentStep={2}
+      steps={[
+        { name: 'First Step', stepContent: () => <SvgCheckmarkSmall /> },
+        { name: 'Second Step', stepContent: () => <SvgCheckmarkSmall /> },
+        { name: 'Third Step' },
+        { name: 'Last Step' },
+      ]}
+      onStepClick={onStepClick}
+    />
+  );
+};
+
 export const Long = () => {
   const onStepClick = (index: number) => {
     console.log(`Clicked index: ${index}`);

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

@@ -60,6 +60,16 @@ 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 shows the step number. However, users can customize the icon or content displayed for each step in the `Stepper` component by providing the `stepContent` property in each item of the `steps` array.
+
+This property is a function that takes the step index and returns custom content to represent the status of each step. A common use case for this customization is to indicate 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 +1,68 @@
+/*---------------------------------------------------------------------------------------------
+ * 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';
+
+export default () => {
+  const [currentStep, setCurrentStep] = React.useState(0);
+  const [completedSteps, setCompletedSteps] = React.useState(new Set());
+
+  const steps = Array(4)
+    .fill()
+    .map((_, index) => ({
+      name: `Step ${index + 1}`,
+      stepContent: () =>
+        completedSteps.has(index) ? <SvgCheckmarkSmall /> : null,
+    }));
+
+  return (
+    <div className='demo-container'>
+      <div className='demo-stepper'>
+        <Stepper
+          currentStep={currentStep}
+          steps={steps}
+          onStepClick={(index) => {
+            setCurrentStep(index);
+          }}
+        />
+      </div>
+
+      <div className='demo-button-container'>
+        <Button
+          disabled={currentStep === 0}
+          onClick={() => {
+            if (currentStep !== 0) {
+              setCurrentStep(currentStep - 1);
+              setCompletedSteps((prevCompletedSteps) => {
+                const newCompletedSteps = new Set(prevCompletedSteps);
+                newCompletedSteps.delete(currentStep - 1);
+                return newCompletedSteps;
+              });
+            }
+          }}
+        >
+          Previous
+        </Button>
+        <Button
+          styleType='cta'
+          disabled={currentStep === steps.length - 1}
+          onClick={() => {
+            if (currentStep < steps.length - 1) {
+              setCurrentStep(currentStep + 1);
+              setCompletedSteps((prevCompletedSteps) => {
+                const newCompletedSteps = new Set(prevCompletedSteps);
+                newCompletedSteps.add(currentStep);
+                return newCompletedSteps;
+              });
+            }
+          }}
+        >
+          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) {
+    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 +70,44 @@ it('should add custom props to Stepper', () => {
   ).toBeTruthy();
 });
 
+it('should pass custom icon for completed steps', () => {
+  const stepper = (
+    <Stepper
+      currentStep={3}
+      steps={[
+        {
+          name: 'Step One',
+          stepContent: () => (
+            <span className={`test-icon`}>
+              <SvgCheckmarkSmall />
+            </span>
+          ),
+        },
+        {
+          name: 'Step Two',
+          stepContent: () => (
+            <span className={`test-icon`}>
+              <SvgCheckmarkSmall />
+            </span>
+          ),
+        },
+        {
+          name: 'Step Three',
+          stepContent: () => (
+            <span className={`test-icon`}>
+              <SvgCheckmarkSmall />
+            </span>
+          ),
+        },
+      ]}
+    />
+  );
+
+  const { container } = render(stepper);
+  const completedSteps = container.querySelectorAll('.test-icon');
+  expect(completedSteps).toHaveLength(3);
+});
+
 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

@@ -21,6 +21,10 @@ export type StepProperties = {
    * A tooltip giving detailed description to this step.
    */
   description?: string;
+  /**
+   * A custom content displayed in each step's circle.
+   */
+  stepContent?: () => React.ReactNode;
 } & React.ComponentProps<'li'>;
 
 export type StepperProps = {
@@ -119,6 +123,7 @@ export const Stepper = React.forwardRef((props, ref) => {
               type={type}
               onClick={onStepClick}
               description={s.description}
+              stepContent={s.stepContent}
             />
           );
         })}

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.
+   */
+  stepContent?: () => React.ReactNode;
   /**
    * Allows props to be passed for stepper step.
    */
@@ -70,6 +74,7 @@ export const StepperStep = React.forwardRef((props, forwardedRef) => {
     trackContentProps,
     circleProps,
     nameProps,
+    stepContent,
     ...rest
   } = props;
 
@@ -132,7 +137,7 @@ export const StepperStep = React.forwardRef((props, forwardedRef) => {
           {...circleProps}
           className={cx('iui-stepper-circle', circleProps?.className)}
         >
-          {index + 1}
+          {stepContent ? stepContent() : index + 1}
         </Box>
       </Box>