Storybook: Add Story for EditableText component

packages/block-editor/src/components/editable-text/stories/index.story.js

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+/**
+ * WordPress dependencies
+ */
+import { useState } from '@wordpress/element';
+
+/**
+ * Internal dependencies
+ */
+import EditableText from '../';
+
+const meta = {
+	title: 'BlockEditor/EditableText',
+	component: EditableText,
+	parameters: {
+		docs: {
+			canvas: { sourceState: 'shown' },
+			description: {
+				component:
+					'Renders a user interface that allows the user to select predefined (common) font sizes.',
+			},
+		},
+	},
+	argTypes: {
+		tagName: {
+			control: { type: 'text' },
+			description: 'The tag name of the editable element.',
+			table: {
+				type: {
+					summary: 'string',
+				},
+			},
+		},
+		onChange: {
+			action: 'onChange',
+			control: { type: null },
+			table: {
+				type: { summary: 'function' },
+			},
+			description: 'Function executed when the text value changes.',
+		},
+		onReplace: {
+			control: { type: null },
+			table: {
+				type: { summary: 'function' },
+			},
+			description:
+				'Function executed when the `Text` instance can be replaced with the given blocks.',
+		},
+		onMerge: {
+			control: { type: null },
+			table: {
+				type: { summary: 'function' },
+			},
+			description: 'Function executed when blocks can be merged.',
+		},
+		onRemove: {
+			control: { type: null },
+			table: {
+				type: { summary: 'function' },
+			},
+			description: 'Function executed when the block can be removed.',
+		},
+		value: {
+			control: { type: 'text' },
+			description: 'String to make editable.',
+			table: {
+				type: {
+					summary: 'string',
+				},
+			},
+		},
+		placeholder: {
+			control: { type: 'text' },
+			description: 'Placeholder text to show when the field is empty.',
+			table: {
+				type: {
+					summary: 'string',
+				},
+			},
+		},
+		disableLineBreaks: {
+			control: { type: null },
+			description:
+				'Text wont insert line breaks on Enter if set to true.',
+			table: {
+				type: {
+					summary: 'boolean',
+				},
+			},
+		},
+	},
+};
+
+export default meta;
+
+export const Default = {
+	render: function Template( { onChange, ...args } ) {
+		const [ value, setValue ] = useState();
+
+		return (
+			<EditableText
+				{ ...args }
+				value={ value }
+				onChange={ ( ...changeArgs ) => {
+					onChange( ...changeArgs );
+					setValue( ...changeArgs );
+				} }
+			/>
+		);
+	},
+	args: {
+		tagName: 'h2',
+	},
+};