added "Remember the mode" story (#269)

demo/Playground.tsx

@@ -67,6 +67,8 @@ export type PlaygroundProps = {
     initialSplitModeEnabled?: boolean;
     renderPreviewDefined?: boolean;
     height?: CSSProperties['height'];
+    onChangeEditorType?: (mode: MarkdownEditorMode) => void;
+    onChangeSplitModeEnabled?: (splitModeEnabled: boolean) => void;
 };
 
 logger.setLogger({
@@ -169,12 +171,14 @@ export const Playground = React.memo<PlaygroundProps>((props) => {
             setMdRaw(mdEditor.getValue());
         }
         function onChangeEditorType({mode}: {mode: MarkdownEditorMode}) {
+            props.onChangeEditorType?.(mode);
             setEditorMode(mode);
         }
         const onToolbarAction = ({id, editorMode: type}: ToolbarActionData) => {
             console.info(`The '${id}' action is performed in the ${type}-editor.`);
         };
         function onChangeSplitModeEnabled({splitModeEnabled}: {splitModeEnabled: boolean}) {
+            props.onChangeSplitModeEnabled?.(splitModeEnabled);
             console.info(`Split mode enabled: ${splitModeEnabled}`);
         }
         function onChangeToolbarVisibility({visible}: {visible: boolean}) {

demo/RememberMode.stories.tsx

@@ -0,0 +1,97 @@
+import React, {useEffect, useState} from 'react';
+
+// eslint-disable-next-line import/no-extraneous-dependencies
+import type {Meta, StoryFn} from '@storybook/react';
+
+import {EditorMode} from '../src/bundle/Editor';
+
+import {Playground as PlaygroundComponent, PlaygroundProps} from './Playground';
+
+export default {
+    title: 'Experiments / Remember the mode',
+} as Meta;
+
+const markup = {
+    RememberMode: `
+## Remember the мode
+
+MarkdownEditor API provides access to flexible configuration, in this demo, when the page is reloaded, the editor's mode of operation does not change.
+
+For this example, the settings are saved in localStorage, but you can use other methods
+
+`.trim(),
+};
+
+type PlaygroundStoryProps = Pick<
+    PlaygroundProps,
+    | 'initialEditor'
+    | 'settingsVisible'
+    | 'breaks'
+    | 'allowHTML'
+    | 'linkify'
+    | 'linkifyTlds'
+    | 'sanitizeHtml'
+    | 'prepareRawMarkup'
+    | 'splitModeOrientation'
+    | 'stickyToolbar'
+    | 'initialSplitModeEnabled'
+    | 'renderPreviewDefined'
+    | 'height'
+>;
+
+const args: Partial<PlaygroundStoryProps> = {
+    initialEditor: 'wysiwyg',
+    settingsVisible: true,
+    allowHTML: true,
+    breaks: true,
+    linkify: true,
+    linkifyTlds: [],
+    sanitizeHtml: false,
+    prepareRawMarkup: false,
+    splitModeOrientation: 'horizontal',
+    stickyToolbar: true,
+    initialSplitModeEnabled: false,
+    renderPreviewDefined: true,
+    height: 'initial',
+};
+
+export const RememberMode: StoryFn<PlaygroundStoryProps> = (props) => {
+    const [mode, setMode] = useState<EditorMode>();
+    const [splitModeEnabled, setSplitModeEnabled] = useState<boolean>();
+
+    const handleChangeEditorType = (mode: EditorMode) => {
+        localStorage.setItem('markdownEditorMode', mode);
+    };
+
+    const handleChangeSplitModeEnabled = (enabled: boolean) => {
+        localStorage.setItem('markdownEditorSplitModeEnabled', enabled.toString());
+    };
+
+    useEffect(() => {
+        const storedMode = localStorage.getItem('markdownEditorMode') || 'wysiwyg';
+        const storedSplitModeEnabled = localStorage.getItem('markdownEditorSplitModeEnabled');
+
+        if (storedMode) {
+            setMode(storedMode as EditorMode);
+            setSplitModeEnabled(storedSplitModeEnabled === 'true');
+        }
+    }, []);
+
+    return (
+        <>
+            {mode && (
+                <PlaygroundComponent
+                    {...props}
+                    onChangeEditorType={handleChangeEditorType}
+                    initialEditor={mode}
+                    initialSplitModeEnabled={splitModeEnabled}
+                    onChangeSplitModeEnabled={handleChangeSplitModeEnabled}
+                    initial={markup.RememberMode}
+                />
+            )}
+        </>
+    );
+};
+
+RememberMode.args = args;
+RememberMode.storyName = 'Playground';