Planning implementation of file upload component

.github/CODEOWNERS

@@ -334,6 +334,8 @@ packages/react-components/react-menu-grid-preview/library @microsoft/teams-prg
 packages/react-components/react-menu-grid-preview/stories @microsoft/teams-prg
 packages/react-components/react-headless-components-preview/library @microsoft/cxe-prg
 packages/react-components/react-headless-components-preview/stories @microsoft/cxe-prg
+packages/react-components/react-file-upload-preview/library @microsoft/cxe-prg
+packages/react-components/react-file-upload-preview/stories @microsoft/cxe-prg
 # <%= NX-CODEOWNER-PLACEHOLDER %>
 
 # Deprecated v9 packages - exposed as part of `/unstable` api

packages/react-components/react-file-upload-preview/library/.babelrc.json

@@ -0,0 +1,4 @@
+{
+  "extends": "../../../../.babelrc-v9.json",
+  "plugins": ["annotate-pure-calls", "@babel/transform-react-pure-annotations"]
+}

packages/react-components/react-file-upload-preview/library/.swcrc

@@ -0,0 +1,30 @@
+{
+  "$schema": "https://json.schemastore.org/swcrc",
+  "exclude": [
+    "/testing",
+    "/**/*.cy.ts",
+    "/**/*.cy.tsx",
+    "/**/*.spec.ts",
+    "/**/*.spec.tsx",
+    "/**/*.test.ts",
+    "/**/*.test.tsx"
+  ],
+  "jsc": {
+    "parser": {
+      "syntax": "typescript",
+      "tsx": true,
+      "decorators": false,
+      "dynamicImport": false
+    },
+    "externalHelpers": true,
+    "transform": {
+      "react": {
+        "runtime": "classic",
+        "useSpread": true
+      }
+    },
+    "target": "es2019"
+  },
+  "minify": false,
+  "sourceMaps": true
+}

packages/react-components/react-file-upload-preview/library/LICENSE

@@ -0,0 +1,15 @@
+@fluentui/react-file-upload-preview
+
+Copyright (c) Microsoft Corporation
+
+All rights reserved.
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ""Software""), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Note: Usage of the fonts and icons referenced in Fluent UI React is subject to the terms listed at https://aka.ms/fluentui-assets-license

packages/react-components/react-file-upload-preview/library/README.md

@@ -0,0 +1,5 @@
+# @fluentui/react-file-upload-preview
+
+**React File Upload components for [Fluent UI React](https://react.fluentui.dev/)**
+
+These are not production-ready components and **should never be used in product**. This space is useful for testing new components whose APIs might change before final release.

packages/react-components/react-file-upload-preview/library/config/api-extractor.json

@@ -0,0 +1,5 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/api-extractor/v7/api-extractor.schema.json",
+  "extends": "@fluentui/scripts-api-extractor/api-extractor.common.v-next.json",
+  "mainEntryPointFilePath": "<projectRoot>/../../../../../../dist/out-tsc/types/packages/react-components/<unscopedPackageName>/library/src/index.d.ts"
+}

packages/react-components/react-file-upload-preview/library/config/tests.js

@@ -0,0 +1 @@
+/** Jest test setup file. */

packages/react-components/react-file-upload-preview/library/docs/Spec.md

@@ -0,0 +1,63 @@
+# @fluentui/react-file-upload-preview Spec
+
+## Background
+
+_Description and use cases of this component_
+
+## Prior Art
+
+_Include background research done for this component_
+
+- _Link to Open UI research_
+- _Link to comparison of v7 and v0_
+- _Link to GitHub epic issue for the converged component_
+
+## Sample Code
+
+_Provide some representative example code that uses the proposed API for the component_
+
+## Variants
+
+_Describe visual or functional variants of this control, if applicable. For example, a slider could have a 2D variant._
+
+## API
+
+_List the **Props** and **Slots** proposed for the component. Ideally this would just be a link to the component's `.types.ts` file_
+
+## Structure
+
+- _**Public**_
+- _**Internal**_
+- _**DOM** - how the component will be rendered as HTML elements_
+
+## Migration
+
+_Describe what will need to be done to upgrade from the existing implementations:_
+
+- _Migration from v8_
+- _Migration from v0_
+
+## Behaviors
+
+_Explain how the component will behave in use, including:_
+
+- _Component States_
+- _Interaction_
+  - _Keyboard_
+  - _Cursor_
+  - _Touch_
+  - _Screen readers_
+
+## Accessibility
+
+Base accessibility information is included in the design document. After the spec is filled and review, outcomes from it need to be communicated to design and incorporated in the design document.
+
+- Decide whether to use **native element** or folow **ARIA** and provide reasons
+- Identify the **[ARIA](https://www.w3.org/TR/wai-aria-practices-1.2/) pattern** and, if the component is listed there, follow its specification as possible.
+- Identify accessibility **variants**, the `role` ([ARIA roles](https://www.w3.org/TR/wai-aria-1.1/#role_definitions)) of the component, its `slots` and `aria-*` props.
+- Describe the **keyboard navigation**: Tab Oder and Arrow Key Navigation. Describe any other keyboard **shortcuts** used
+- Specify texts for **state change announcements** - [ARIA live regions
+  ](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Live_Regions) (number of available items in dropdown, error messages, confirmations, ...)
+- Identify UI parts that appear on **hover or focus** and specify keyboard and screen reader interaction with them
+- List cases when **focus** needs to be **trapped** in sections of the UI (for dialogs and popups or for hierarchical navigation)
+- List cases when **focus** needs to be **moved programatically** (if parts of the UI are appearing/disappearing or other cases)

packages/react-components/react-file-upload-preview/library/eslint.config.js

@@ -0,0 +1,5 @@
+// @ts-check
+
+const fluentPlugin = require('@fluentui/eslint-plugin');
+
+module.exports = [...fluentPlugin.configs['flat/react']];

packages/react-components/react-file-upload-preview/library/jest.config.js

@@ -0,0 +1,34 @@
+// @ts-check
+/* eslint-disable */
+
+const { readFileSync } = require('node:fs');
+const { join } = require('node:path');
+
+// Reading the SWC compilation config and remove the "exclude"
+// for the test files to be compiled by SWC
+const { exclude: _, ...swcJestConfig } = JSON.parse(readFileSync(join(__dirname, '.swcrc'), 'utf-8'));
+
+// disable .swcrc look-up by SWC core because we're passing in swcJestConfig ourselves.
+// If we do not disable this, SWC Core will read .swcrc and won't transform our test files due to "exclude"
+if (swcJestConfig.swcrc === undefined) {
+  swcJestConfig.swcrc = false;
+}
+
+// Uncomment if using global setup/teardown files being transformed via swc
+// https://nx.dev/packages/jest/documents/overview#global-setup/teardown-with-nx-libraries
+// jest needs EsModule Interop to find the default exported setup/teardown functions
+// swcJestConfig.module.noInterop = false;
+
+/**
+ * @type {import('@jest/types').Config.InitialOptions}
+ */
+module.exports = {
+  displayName: 'react-file-upload-preview',
+  preset: '../../../../jest.preset.js',
+  transform: {
+    '^.+\\.tsx?$': ['@swc/jest', swcJestConfig],
+  },
+  coverageDirectory: './coverage',
+  setupFilesAfterEnv: ['./config/tests.js'],
+  snapshotSerializers: ['@griffel/jest-serializer'],
+};

packages/react-components/react-file-upload-preview/library/package.json

@@ -0,0 +1,50 @@
+{
+  "name": "@fluentui/react-file-upload-preview",
+  "version": "0.0.0",
+  "private": true,
+  "description": "New fluentui react package",
+  "main": "lib-commonjs/index.js",
+  "module": "lib/index.js",
+  "typings": "./dist/index.d.ts",
+  "sideEffects": false,
+  "files": [
+    "*.md",
+    "dist/*.d.ts",
+    "lib",
+    "lib-commonjs"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/microsoft/fluentui"
+  },
+  "license": "MIT",
+  "dependencies": {
+    "@fluentui/react-jsx-runtime": "^9.4.3",
+    "@fluentui/react-shared-contexts": "^9.26.2",
+    "@fluentui/react-theme": "^9.2.1",
+    "@fluentui/react-utilities": "^9.26.4",
+    "@griffel/react": "^1.5.32",
+    "@swc/helpers": "^0.5.1"
+  },
+  "peerDependencies": {
+    "@types/react": ">=16.14.0 <19.0.0",
+    "@types/react-dom": ">=16.9.0 <19.0.0",
+    "react": ">=16.14.0 <19.0.0",
+    "react-dom": ">=16.14.0 <19.0.0"
+  },
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "node": "./lib-commonjs/index.js",
+      "import": "./lib/index.js",
+      "require": "./lib-commonjs/index.js"
+    },
+    "./package.json": "./package.json"
+  },
+  "beachball": {
+    "disallowedChangeTypes": [
+      "major",
+      "prerelease"
+    ]
+  }
+}

packages/react-components/react-file-upload-preview/library/project.json

@@ -0,0 +1,8 @@
+{
+  "name": "react-file-upload-preview",
+  "$schema": "../../../../node_modules/nx/schemas/project-schema.json",
+  "projectType": "library",
+  "sourceRoot": "packages/react-components/react-file-upload-preview/library/src",
+  "tags": ["platform:web", "vNext"],
+  "implicitDependencies": []
+}

packages/react-components/react-file-upload-preview/library/src/FileUpload.ts

@@ -0,0 +1,8 @@
+export {
+  fileUploadClassNames,
+  FileUpload,
+  renderFileUpload_unstable,
+  useFileUpload_unstable,
+  useFileUploadStyles_unstable,
+} from './components/FileUpload/index';
+export type { FileUploadProps, FileUploadState } from './components/FileUpload/index';

packages/react-components/react-file-upload-preview/library/src/components/FileUpload/FileUpload.test.tsx

@@ -0,0 +1,18 @@
+import * as React from 'react';
+import { render } from '@testing-library/react';
+import { isConformant } from '../../testing/isConformant';
+import { FileUpload } from './FileUpload';
+
+describe('FileUpload', () => {
+  isConformant({
+    Component: FileUpload,
+    displayName: 'FileUpload',
+  });
+
+  // TODO add more tests here, and create visual regression tests in /apps/vr-tests
+
+  it('renders a default state', () => {
+    const result = render(<FileUpload>Default FileUpload</FileUpload>);
+    expect(result.container).toMatchSnapshot();
+  });
+});

packages/react-components/react-file-upload-preview/library/src/components/FileUpload/FileUpload.tsx

@@ -0,0 +1,29 @@
+import * as React from 'react';
+import type { ForwardRefComponent } from '@fluentui/react-utilities';
+import { useFileUpload_unstable } from './useFileUpload';
+import { renderFileUpload_unstable } from './renderFileUpload';
+import { useFileUploadStyles_unstable } from './useFileUploadStyles.styles';
+import type { FileUploadProps } from './FileUpload.types';
+
+/**
+ * FileUpload component - TODO: add more docs
+ */
+export const FileUpload: ForwardRefComponent<FileUploadProps> = React.forwardRef((props, ref) => {
+  const state = useFileUpload_unstable(props, ref);
+
+  useFileUploadStyles_unstable(state);
+
+  /**
+   * @see https://github.com/microsoft/fluentui/blob/master/docs/react-v9/contributing/rfcs/react-components/convergence/custom-styling.md
+   *
+   * TODO: 💡 once package will become stable (PR which will be part of promoting PREVIEW package to STABLE),
+   *      - uncomment this line
+   *      - update types {@link file://./../../../../../../../packages/react-components/react-shared-contexts/library/src/CustomStyleHooksContext/CustomStyleHooksContext.ts#CustomStyleHooksContextValue}
+   *      - verify that custom global style override works for your component
+   */
+  // useCustomStyleHook_unstable('useFileUploadStyles_unstable')(state);
+
+  return renderFileUpload_unstable(state);
+});
+
+FileUpload.displayName = 'FileUpload';

packages/react-components/react-file-upload-preview/library/src/components/FileUpload/FileUpload.types.ts

@@ -0,0 +1,17 @@
+import type { ComponentProps, ComponentState, Slot } from '@fluentui/react-utilities';
+
+export type FileUploadSlots = {
+  root: Slot<'div'>;
+};
+
+/**
+ * FileUpload Props
+ */
+export type FileUploadProps = ComponentProps<FileUploadSlots> & {};
+
+/**
+ * State used in rendering FileUpload
+ */
+export type FileUploadState = ComponentState<FileUploadSlots>;
+// TODO: Remove semicolon from previous line, uncomment next line, and provide union of props to pick from FileUploadProps.
+// & Required<Pick<FileUploadProps, 'propName'>>

packages/react-components/react-file-upload-preview/library/src/components/FileUpload/index.ts

@@ -0,0 +1,5 @@
+export { FileUpload } from './FileUpload';
+export type { FileUploadProps, FileUploadState } from './FileUpload.types';
+export { renderFileUpload_unstable } from './renderFileUpload';
+export { useFileUpload_unstable } from './useFileUpload';
+export { fileUploadClassNames, useFileUploadStyles_unstable } from './useFileUploadStyles.styles';

packages/react-components/react-file-upload-preview/library/src/components/FileUpload/renderFileUpload.tsx

@@ -0,0 +1,16 @@
+/** @jsxRuntime automatic */
+/** @jsxImportSource @fluentui/react-jsx-runtime */
+
+import { assertSlots } from '@fluentui/react-utilities';
+import type { JSXElement } from '@fluentui/react-utilities';
+import type { FileUploadState, FileUploadSlots } from './FileUpload.types';
+
+/**
+ * Render the final JSX of FileUpload
+ */
+export const renderFileUpload_unstable = (state: FileUploadState): JSXElement => {
+  assertSlots<FileUploadSlots>(state);
+
+  // TODO Add additional slots in the appropriate place
+  return <state.root />;
+};

packages/react-components/react-file-upload-preview/library/src/components/FileUpload/useFileUpload.ts

@@ -0,0 +1,31 @@
+import * as React from 'react';
+import { getIntrinsicElementProps, slot } from '@fluentui/react-utilities';
+import type { FileUploadProps, FileUploadState } from './FileUpload.types';
+
+/**
+ * Create the state required to render FileUpload.
+ *
+ * The returned state can be modified with hooks such as useFileUploadStyles_unstable,
+ * before being passed to renderFileUpload_unstable.
+ *
+ * @param props - props from this instance of FileUpload
+ * @param ref - reference to root HTMLDivElement of FileUpload
+ */
+export const useFileUpload_unstable = (props: FileUploadProps, ref: React.Ref<HTMLDivElement>): FileUploadState => {
+  return {
+    // TODO add appropriate props/defaults
+    components: {
+      // TODO add each slot's element type or component
+      root: 'div',
+    },
+    // TODO add appropriate slots, for example:
+    // mySlot: resolveShorthand(props.mySlot),
+    root: slot.always(
+      getIntrinsicElementProps('div', {
+        ref,
+        ...props,
+      }),
+      { elementType: 'div' },
+    ),
+  };
+};