[Dialog] Migrate DialogTitle to emotion

docs/pages/api-docs/dialog-title.json

@@ -2,7 +2,8 @@
   "props": {
     "children": { "type": { "name": "node" } },
     "classes": { "type": { "name": "object" } },
-    "disableTypography": { "type": { "name": "bool" } }
+    "disableTypography": { "type": { "name": "bool" } },
+    "sx": { "type": { "name": "object" } }
   },
   "name": "DialogTitle",
   "styles": { "classes": ["root"], "globalClasses": {}, "name": "MuiDialogTitle" },
@@ -11,6 +12,6 @@
   "filename": "/packages/material-ui/src/DialogTitle/DialogTitle.js",
   "inheritance": null,
   "demos": "<ul><li><a href=\"/components/dialogs/\">Dialogs</a></li></ul>",
-  "styledComponent": false,
+  "styledComponent": true,
   "cssComponent": false
 }

docs/translations/api-docs/dialog-title/dialog-title.json

@@ -3,7 +3,8 @@
   "propDescriptions": {
     "children": "The content of the component.",
     "classes": "Override or extend the styles applied to the component. See <a href=\"#css\">CSS API</a> below for more details.",
-    "disableTypography": "If <code>true</code>, the children won&#39;t be wrapped by a typography component. For instance, this can be useful to render an h4 instead of the default h2."
+    "disableTypography": "If <code>true</code>, the children won&#39;t be wrapped by a typography component. For instance, this can be useful to render an h4 instead of the default h2.",
+    "sx": "The system prop that allows defining system overrides as well as additional CSS styles. See the <a href=\"/system/basics/#the-sx-prop\">`sx` page</a> for more details."
   },
   "classDescriptions": { "root": { "description": "Styles applied to the root element." } }
 }

packages/material-ui/src/DialogTitle/DialogTitle.d.ts

@@ -1,5 +1,6 @@
 import * as React from 'react';
-import { InternalStandardProps as StandardProps } from '..';
+import { SxProps } from '@material-ui/system';
+import { InternalStandardProps as StandardProps, Theme } from '..';
 
 export interface DialogTitleProps extends StandardProps<React.HTMLAttributes<HTMLDivElement>> {
   /**
@@ -13,6 +14,10 @@ export interface DialogTitleProps extends StandardProps<React.HTMLAttributes<HTM
     /** Styles applied to the root element. */
     root?: string;
   };
+  /**
+   * The system prop that allows defining system overrides as well as additional CSS styles.
+   */
+  sx?: SxProps<Theme>;
   /**
    * If `true`, the children won't be wrapped by a typography component.
    * For instance, this can be useful to render an h4 instead of the default h2.

packages/material-ui/src/DialogTitle/DialogTitle.js

@@ -1,31 +1,66 @@
 import * as React from 'react';
 import PropTypes from 'prop-types';
 import clsx from 'clsx';
-import withStyles from '../styles/withStyles';
+import { unstable_composeClasses as composeClasses } from '@material-ui/unstyled';
 import Typography from '../Typography';
+import experimentalStyled from '../styles/experimentalStyled';
+import useThemeProps from '../styles/useThemeProps';
+import { getDialogTitleUtilityClass } from './dialogTitleClasses';
 
-export const styles = {
-  /* Styles applied to the root element. */
-  root: {
+const overridesResolver = (props, styles) => styles.root || {};
+
+const useUtilityClasses = (styleProps) => {
+  const { classes } = styleProps;
+
+  const slots = {
+    root: ['root'],
+  };
+
+  return composeClasses(slots, getDialogTitleUtilityClass, classes);
+};
+
+const DialogTitleRoot = experimentalStyled(
+  'div',
+  {},
+  {
+    name: 'MuiDialogTitle',
+    slot: 'Root',
+    overridesResolver,
+  },
+)(() => {
+  return {
+    /* Styles applied to the root element. */
     margin: 0,
     padding: '16px 24px',
     flex: '0 0 auto',
-  },
-};
+  };
+});
 
-const DialogTitle = React.forwardRef(function DialogTitle(props, ref) {
-  const { children, classes, className, disableTypography = false, ...other } = props;
+const DialogTitle = React.forwardRef(function DialogTitle(inProps, ref) {
+  const props = useThemeProps({
+    props: inProps,
+    name: 'MuiDialogTitle',
+  });
+
+  const { children, className, disableTypography = false, ...other } = props;
+  const styleProps = { ...props, disableTypography };
+  const classes = useUtilityClasses(styleProps);
 
   return (
-    <div className={clsx(classes.root, className)} ref={ref} {...other}>
+    <DialogTitleRoot
+      className={clsx(classes.root, className)}
+      styleProps={styleProps}
+      ref={ref}
+      {...other}
+    >
       {disableTypography ? (
         children
       ) : (
         <Typography component="h2" variant="h6">
           {children}
         </Typography>
       )}
-    </div>
+    </DialogTitleRoot>
   );
 });
 
@@ -52,6 +87,10 @@ DialogTitle.propTypes = {
    * @default false
    */
   disableTypography: PropTypes.bool,
+  /**
+   * The system prop that allows defining system overrides as well as additional CSS styles.
+   */
+  sx: PropTypes.object,
 };
 
-export default withStyles(styles, { name: 'MuiDialogTitle' })(DialogTitle);
+export default DialogTitle;

packages/material-ui/src/DialogTitle/DialogTitle.test.js

@@ -1,22 +1,20 @@
 import * as React from 'react';
-import { getClasses, createMount, describeConformance, createClientRender } from 'test/utils';
+import { createMount, describeConformanceV5, createClientRender } from 'test/utils';
 import DialogTitle from './DialogTitle';
+import classes from './dialogTitleClasses';
 
 describe('<DialogTitle />', () => {
   const mount = createMount();
   const render = createClientRender();
-  let classes;
 
-  before(() => {
-    classes = getClasses(<DialogTitle>foo</DialogTitle>);
-  });
-
-  describeConformance(<DialogTitle>foo</DialogTitle>, () => ({
+  describeConformanceV5(<DialogTitle>foo</DialogTitle>, () => ({
     classes,
     inheritComponent: 'div',
     mount,
+    muiName: 'MuiDialogTitle',
     refInstanceof: window.HTMLDivElement,
-    skip: ['componentProp'],
+    testVariantProps: { disableTypography: true },
+    skip: ['componentProp', 'componentsProp'],
   }));
 
   it('should render JSX children', () => {

packages/material-ui/src/DialogTitle/dialogTitleClasses.d.ts

@@ -0,0 +1,9 @@
+export interface DialogTitleClasses {
+  root: string;
+}
+
+declare const dialogTitleClasses: DialogTitleClasses;
+
+export function getDialogTitleUtilityClass(slot: string): string;
+
+export default dialogTitleClasses;

packages/material-ui/src/DialogTitle/dialogTitleClasses.js

@@ -0,0 +1,9 @@
+import { generateUtilityClass, generateUtilityClasses } from '@material-ui/unstyled';
+
+export function getDialogTitleUtilityClass(slot) {
+  return generateUtilityClass('MuiDialogTitle', slot);
+}
+
+const dialogTitleClasses = generateUtilityClasses('MuiDialogTitle', ['root']);
+
+export default dialogTitleClasses;

packages/material-ui/src/DialogTitle/index.d.ts

@@ -1,2 +1,4 @@
 export { default } from './DialogTitle';
 export * from './DialogTitle';
+export { default as dialogTitleClasses } from './dialogTitleClasses';
+export * from './dialogTitleClasses';

packages/material-ui/src/DialogTitle/index.js

@@ -1 +1,3 @@
 export { default } from './DialogTitle';
+export { default as dialogTitleClasses } from './dialogTitleClasses';
+export * from './dialogTitleClasses';