[docs] Add overriding-component-structure doc to Material UI

docs/data/material/customization/overriding-component-structure/OverridingInternalSlot.js

@@ -0,0 +1,33 @@
+import * as React from 'react';
+import PropTypes from 'prop-types';
+import Box from '@mui/material/Box';
+import Autocomplete from '@mui/material/Autocomplete';
+import TextField from '@mui/material/TextField';
+
+function PopperComponent(props) {
+  const { disablePortal, anchorEl, open, ...other } = props;
+  return <div {...other} />;
+}
+
+PopperComponent.propTypes = {
+  anchorEl: PropTypes.any,
+  disablePortal: PropTypes.bool,
+  open: PropTypes.bool.isRequired,
+};
+
+export default function OverridingInternalSlot() {
+  return (
+    <Box
+      sx={{ display: 'flex', flexDirection: 'column', width: 320, minHeight: 220 }}
+    >
+      <Autocomplete
+        open
+        options={['🆘 Need help', '✨ Improvement', '🚀 New feature', '🐛 Bug fix']}
+        renderInput={(params) => <TextField {...params} />}
+        slots={{
+          popper: PopperComponent,
+        }}
+      />
+    </Box>
+  );
+}

docs/data/material/customization/overriding-component-structure/OverridingInternalSlot.tsx

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+import * as React from 'react';
+import Box from '@mui/material/Box';
+import Autocomplete from '@mui/material/Autocomplete';
+import TextField from '@mui/material/TextField';
+
+interface PopperComponentProps {
+  anchorEl?: any;
+  disablePortal?: boolean;
+  open: boolean;
+}
+
+function PopperComponent(props: PopperComponentProps) {
+  const { disablePortal, anchorEl, open, ...other } = props;
+  return <div {...other} />;
+}
+
+export default function OverridingInternalSlot() {
+  return (
+    <Box
+      sx={{ display: 'flex', flexDirection: 'column', width: 320, minHeight: 220 }}
+    >
+      <Autocomplete
+        open
+        options={['🆘 Need help', '✨ Improvement', '🚀 New feature', '🐛 Bug fix']}
+        renderInput={(params) => <TextField {...params} />}
+        slots={{
+          popper: PopperComponent,
+        }}
+      />
+    </Box>
+  );
+}

docs/data/material/customization/overriding-component-structure/OverridingInternalSlot.tsx.preview

@@ -0,0 +1,8 @@
+<Autocomplete
+  open
+  options={['🆘 Need help', '✨ Improvement', '🚀 New feature', '🐛 Bug fix']}
+  renderInput={(params) => <TextField {...params} />}
+  slots={{
+    popper: PopperComponent,
+  }}
+/>

docs/data/material/customization/overriding-component-structure/OverridingRootSlot.js

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+import * as React from 'react';
+import Button from '@mui/material/Button';
+
+export default function OverridingRootSlot() {
+  return (
+    <Button
+      component="a"
+      href="https://mui.com/about/"
+      target="_blank"
+      rel="noopener"
+    >
+      About us
+    </Button>
+  );
+}

docs/data/material/customization/overriding-component-structure/OverridingRootSlot.tsx

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+import * as React from 'react';
+import Button from '@mui/material/Button';
+
+export default function OverridingRootSlot() {
+  return (
+    <Button
+      component="a"
+      href="https://mui.com/about/"
+      target="_blank"
+      rel="noopener"
+    >
+      About us
+    </Button>
+  );
+}

docs/data/material/customization/overriding-component-structure/OverridingRootSlot.tsx.preview

@@ -0,0 +1,8 @@
+<Button
+  component="a"
+  href="https://mui.com/about/"
+  target="_blank"
+  rel="noopener"
+>
+  About us
+</Button>

docs/data/material/customization/overriding-component-structure/overriding-component-structure.md

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+# Overriding component structure
+
+<p class="description">Learn how to override the default DOM structure of Material UI components.</p>
+
+Material UI components are designed to suit the widest possible range of use cases, but you may occasionally need to change how a component's structure is rendered in the DOM.
+
+To understand how to do this, it helps to know a bit about how the API design has evolved over time, and to have an accurate mental model of the components themselves.
+
+## Context
+
+Prior to Material UI v6, it was not possible to override the structure of most components in the library.
+Some components had `*Props` props that allowed you to pass props to a specific slot, but this pattern was not applied consistently.
+
+In v6, those props were deprecated in favor of the `slots` and `slotProps` props, which allow for more granular control over the structure of a component and make the API more consistent across the library.
+
+To see the available slots for a component, refer to the slots sections of the respective component API documentation.
+
+## The mental model
+
+A component's structure is determined by the elements that fill that component's **slots**.
+Slots are most commonly filled by HTML tags, but may also be filled by React components.
+
+All components contain a root slot that defines their primary node in the DOM tree; more complex components also contain additional interior slots named after the elements they represent.
+
+All _non-utility_ Material UI components accept two props for overriding their rendered HTML structure:
+
+- `component`—to override the root slot
+- `slots`—to replace any interior slots (when present) as well as the root
+
+Additionally, you can pass custom props to interior slots using `slotProps`.
+
+## The root slot
+
+The root slot represents the component's outermost element. It is filled by a styled component with an appropriate HTML element.
+
+For example, the [Button's](/material-ui/react-button/) root slot is a `<button>` element.
+This component _only_ has a root slot; more complex components may have additional [interior slots](#interior-slots).
+
+### The component prop
+
+Use the `component` prop to override a component's root slot.
+The demo below shows how to replace the Button's `<button>` tag with a `<a>` to create a link button:
+
+{{"demo": "OverridingRootSlot.js"}}
+
+:::info
+The `href`, `target`, and `rel` props are specific to `<a>` tags.
+When using the `component` prop, be sure to add the appropriate attributes that correspond to the element you're inserting.
+:::
+
+## Interior slots
+
+Complex components are composed of one or more interior slots in addition to the root.
+These slots are often (but not necessarily) nested within the root.
+
+For example, the [Autocomplete](/material-ui/react-autocomplete/) is composed of a root `<div>` that houses several interior slots named for the elements they represent: input, startDecorator, endDecorator, clearIndicator, popupIndicator, and more.
+
+### The slots prop
+
+Use the `slots` prop to replace a component's interior slots.
+The example below shows how to replace the popper slot in the [Autocomplete](/material-ui/react-autocomplete/) component to remove the popup functionality:
+
+{{"demo": "OverridingInternalSlot.js"}}
+
+### The slotProps prop
+
+The `slotProps` prop is an object that contains the props for all slots within a component.
+You can use it to define additional custom props to pass to a component's interior slots.
+
+For example, the code snippet below shows how to add a custom `data-testid` to the popper slot of the [Autocomplete](/material-ui/react-autocomplete/) component:
+
+```jsx
+<Autocomplete slotProps={{ popper: { 'data-testid': 'my-popper' } }} />
+```
+
+All additional props placed on the primary component are also propagated into the root slot (just as if they were placed in `slotProps.root`).
+These two examples are equivalent:
+
+```jsx
+<Autocomplete id="badge1">
+```
+
+```jsx
+<Autocomplete slotProps={{ root: { id: 'badge1' } }}>
+```
+
+:::warning
+If both `slotProps.root` and additional props have the same keys but different values, the `slotProps.root` props will take precedence.
+This does not apply to classes or the `style` prop—they will be merged instead.
+:::
+
+## Best practices
+
+Use the `component` or `slotProps.{slot}.component` prop when you need to override the element while preserving the styles of the slot.
+
+Use the `slots` prop when you need to replace the slot's styles and functionality with your custom component.
+
+Overriding with `component` lets you apply the attributes of that element directly to the root.
+For instance, if you override the Button's root with an `<li>` tag, you can add the `<li>` attribute `value` directly to the component.
+If you did the same with `slots.root`, you would need to place this attribute on the `slotProps.root` object in order to avoid a TypeScript error.
+
+Be mindful of your rendered DOM structure when overriding the slots of more complex components.
+You can easily break the rules of semantic and accessible HTML if you deviate too far from the default structure—for instance, by unintentionally nesting block-level elements inside of inline elements.

docs/data/material/pages.ts

@@ -180,6 +180,7 @@ const pages: MuiPage[] = [
     pathname: '/material-ui/customization',
     children: [
       { pathname: '/material-ui/customization/how-to-customize' },
+      { pathname: '/material-ui/customization/overriding-component-structure' },
       { pathname: '/material-ui/customization/dark-mode' },
       { pathname: '/material-ui/customization/color' },
       { pathname: '/material-ui/customization/right-to-left', title: 'Right-to-left' },

docs/pages/material-ui/customization/overriding-component-structure.js

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+import * as React from 'react';
+import MarkdownDocs from 'docs/src/modules/components/MarkdownDocs';
+import * as pageProps from 'docs/data/material/customization/overriding-component-structure/overriding-component-structure.md?muiMarkdown';
+
+export default function Page() {
+  return <MarkdownDocs {...pageProps} />;
+}

docs/translations/translations.json

@@ -219,6 +219,7 @@
     "/material-ui/react-timeline": "Timeline",
     "/material-ui/customization": "Customization",
     "/material-ui/customization/how-to-customize": "How to customize",
+    "/material-ui/customization/overriding-component-structure": "Overriding component structure",
     "/material-ui/customization/dark-mode": "Dark mode",
     "/material-ui/customization/color": "Color",
     "/material-ui/customization/right-to-left": "Right-to-left",