From 1690a7bdcfc63f18c44c254a9d8182223cfc367e Mon Sep 17 00:00:00 2001
From: mrdrogdrog <tilman.vatteroth@tu-dortmund.de>
Date: Wed, 28 Oct 2020 22:15:00 +0100
Subject: [PATCH] Improvement/move document content into redux (#691)

---
 .../editor/document-bar/document-bar.tsx        | 10 +++++-----
 .../editor/document-bar/import/import-file.tsx  | 16 ++++++++++------
 .../editor/document-bar/menus/export-menu.tsx   |  8 ++------
 .../document-bar/menus/export/markdown.tsx      |  9 ++++++---
 .../editor/document-bar/menus/import-menu.tsx   |  9 ++-------
 .../document-bar/revisions/revision-button.tsx  |  8 ++------
 .../document-bar/revisions/revision-modal.tsx   |  7 ++++---
 .../document-render-pane.tsx                    |  7 ++++---
 .../scrolling-document-render-pane.tsx          |  7 ++++---
 src/components/editor/editor.tsx                | 16 ++++++++++------
 src/components/pad-view-only/pad-view-only.tsx  |  7 +++++--
 src/redux/document-content/methods.ts           | 10 ++++++++++
 src/redux/document-content/reducers.ts          | 15 +++++++++++++++
 src/redux/document-content/types.ts             | 17 +++++++++++++++++
 src/redux/index.ts                              |  6 +++++-
 15 files changed, 101 insertions(+), 51 deletions(-)
 create mode 100644 src/redux/document-content/methods.ts
 create mode 100644 src/redux/document-content/reducers.ts
 create mode 100644 src/redux/document-content/types.ts

diff --git a/src/components/editor/document-bar/document-bar.tsx b/src/components/editor/document-bar/document-bar.tsx
index 4ed941137..32ccd382a 100644
--- a/src/components/editor/document-bar/document-bar.tsx
+++ b/src/components/editor/document-bar/document-bar.tsx
@@ -6,7 +6,7 @@ import { ConnectionIndicator } from './connection-indicator/connection-indicator
 import { DocumentInfoButton } from './document-info/document-info-button'
 import { EditorMenu } from './menus/editor-menu'
 import { ExportMenu } from './menus/export-menu'
-import { ImportMenu, ImportProps } from './menus/import-menu'
+import { ImportMenu } from './menus/import-menu'
 import { PermissionButton } from './permissions/permission-button'
 import { RevisionButton } from './revisions/revision-button'
 
@@ -14,7 +14,7 @@ export interface DocumentBarProps {
   title: string
 }
 
-export const DocumentBar: React.FC<DocumentBarProps & ImportProps> = ({ title, noteContent, updateNoteContent }) => {
+export const DocumentBar: React.FC<DocumentBarProps> = ({ title }) => {
   useTranslation()
 
   return (
@@ -22,13 +22,13 @@ export const DocumentBar: React.FC<DocumentBarProps & ImportProps> = ({ title, n
       <div className="navbar-nav">
         <ShareLinkButton/>
         <DocumentInfoButton/>
-        <RevisionButton noteContent={noteContent}/>
+        <RevisionButton/>
         <PinToHistoryButton/>
         <PermissionButton/>
       </div>
       <div className="ml-auto navbar-nav">
-        <ImportMenu updateNoteContent={updateNoteContent} noteContent={noteContent}/>
-        <ExportMenu title={title} noteContent={noteContent}/>
+        <ImportMenu/>
+        <ExportMenu title={title}/>
         <EditorMenu noteTitle={title}/>
         <ConnectionIndicator/>
       </div>
diff --git a/src/components/editor/document-bar/import/import-file.tsx b/src/components/editor/document-bar/import/import-file.tsx
index b34926ecd..57efdce76 100644
--- a/src/components/editor/document-bar/import/import-file.tsx
+++ b/src/components/editor/document-bar/import/import-file.tsx
@@ -1,10 +1,14 @@
 import React, { Fragment, useCallback, useRef } from 'react'
 import { Dropdown } from 'react-bootstrap'
 import { Trans } from 'react-i18next'
+import { useSelector } from 'react-redux'
+import { ApplicationState } from '../../../../redux'
+import { setDocumentContent } from '../../../../redux/document-content/methods'
 import { ForkAwesomeIcon } from '../../../common/fork-awesome/fork-awesome-icon'
-import { ImportProps } from '../menus/import-menu'
 
-export const ImportFile: React.FC<ImportProps> = ({ noteContent, updateNoteContent }) => {
+export const ImportFile: React.FC = () => {
+  const markdownContent = useSelector((state: ApplicationState) => state.documentContent.content)
+
   const fileInputReference = useRef<HTMLInputElement>(null)
   const doImport = useCallback(() => {
     const fileInput = fileInputReference.current
@@ -19,10 +23,10 @@ export const ImportFile: React.FC<ImportProps> = ({ noteContent, updateNoteConte
       const fileReader = new FileReader()
       fileReader.addEventListener('load', () => {
         const newContent = fileReader.result as string
-        if (noteContent.length === 0) {
-          updateNoteContent(newContent)
+        if (markdownContent.length === 0) {
+          setDocumentContent(newContent)
         } else {
-          updateNoteContent(noteContent + '\n' + newContent)
+          setDocumentContent(markdownContent + '\n' + newContent)
         }
       })
       fileReader.addEventListener('loadend', () => {
@@ -31,7 +35,7 @@ export const ImportFile: React.FC<ImportProps> = ({ noteContent, updateNoteConte
       fileReader.readAsText(file)
     })
     fileInput.click()
-  }, [fileInputReference, noteContent, updateNoteContent])
+  }, [markdownContent])
 
   return (
     <Fragment>
diff --git a/src/components/editor/document-bar/menus/export-menu.tsx b/src/components/editor/document-bar/menus/export-menu.tsx
index 4c4ea510b..680083dd9 100644
--- a/src/components/editor/document-bar/menus/export-menu.tsx
+++ b/src/components/editor/document-bar/menus/export-menu.tsx
@@ -7,10 +7,9 @@ import { MarkdownExportDropdownItem } from './export/markdown'
 
 export interface ExportMenuProps {
   title: string
-  noteContent: string
 }
 
-export const ExportMenu: React.FC<ExportMenuProps> = ({ title, noteContent }) => {
+export const ExportMenu: React.FC<ExportMenuProps> = ({ title }) => {
   useTranslation()
   return (
     <Dropdown className='small mx-1' alignRight={true}>
@@ -40,10 +39,7 @@ export const ExportMenu: React.FC<ExportMenuProps> = ({ title, noteContent }) =>
         <Dropdown.Header>
           <Trans i18nKey='editor.documentBar.download'/>
         </Dropdown.Header>
-        <MarkdownExportDropdownItem
-          title={title}
-          noteContent={noteContent}
-        />
+        <MarkdownExportDropdownItem title={title} />
         <Dropdown.Item className='small'>
           <ForkAwesomeIcon icon='file-code-o' className={'mx-2'}/>
           HTML
diff --git a/src/components/editor/document-bar/menus/export/markdown.tsx b/src/components/editor/document-bar/menus/export/markdown.tsx
index e2bd268ef..9422c2262 100644
--- a/src/components/editor/document-bar/menus/export/markdown.tsx
+++ b/src/components/editor/document-bar/menus/export/markdown.tsx
@@ -1,16 +1,19 @@
 import React from 'react'
 import { Dropdown } from 'react-bootstrap'
+import { useSelector } from 'react-redux'
+import { ApplicationState } from '../../../../../redux'
 import { download } from '../../../../common/download/download'
 import { ForkAwesomeIcon } from '../../../../common/fork-awesome/fork-awesome-icon'
 
 export interface MarkdownExportDropdownItemProps {
   title: string
-  noteContent: string
 }
 
-export const MarkdownExportDropdownItem: React.FC<MarkdownExportDropdownItemProps> = ({ title, noteContent }) => {
+export const MarkdownExportDropdownItem: React.FC<MarkdownExportDropdownItemProps> = ({ title }) => {
+  const markdownContent = useSelector((state: ApplicationState) => state.documentContent.content)
+
   return (
-    <Dropdown.Item className='small' onClick={() => download(noteContent, `${title}.md`, 'text/markdown')}>
+    <Dropdown.Item className='small' onClick={() => download(markdownContent, `${title}.md`, 'text/markdown')}>
       <ForkAwesomeIcon icon='file-text' className={'mx-2'}/>
       Markdown
     </Dropdown.Item>
diff --git a/src/components/editor/document-bar/menus/import-menu.tsx b/src/components/editor/document-bar/menus/import-menu.tsx
index d43b972fe..27e7409c1 100644
--- a/src/components/editor/document-bar/menus/import-menu.tsx
+++ b/src/components/editor/document-bar/menus/import-menu.tsx
@@ -4,12 +4,7 @@ import { Trans } from 'react-i18next'
 import { ForkAwesomeIcon } from '../../../common/fork-awesome/fork-awesome-icon'
 import { ImportFile } from '../import/import-file'
 
-export interface ImportProps {
-  noteContent: string
-  updateNoteContent: (content: string) => void
-}
-
-export const ImportMenu: React.FC<ImportProps> = ({ updateNoteContent, noteContent }) => {
+export const ImportMenu: React.FC = () => {
   return (
     <Dropdown className='small mx-1' alignRight={true}>
       <Dropdown.Toggle variant='light' size='sm' id='editor-menu-import' className=''>
@@ -33,7 +28,7 @@ export const ImportMenu: React.FC<ImportProps> = ({ updateNoteContent, noteConte
           <ForkAwesomeIcon icon='clipboard' className={'mx-2'}/>
           <Trans i18nKey='editor.import.clipboard'/>
         </Dropdown.Item>
-        <ImportFile updateNoteContent={updateNoteContent} noteContent={noteContent}/>
+        <ImportFile/>
       </Dropdown.Menu>
     </Dropdown>
   )
diff --git a/src/components/editor/document-bar/revisions/revision-button.tsx b/src/components/editor/document-bar/revisions/revision-button.tsx
index 0372509e7..548f35143 100644
--- a/src/components/editor/document-bar/revisions/revision-button.tsx
+++ b/src/components/editor/document-bar/revisions/revision-button.tsx
@@ -2,17 +2,13 @@ import React, { Fragment, useState } from 'react'
 import { TranslatedIconButton } from '../../../common/icon-button/translated-icon-button'
 import { RevisionModal } from './revision-modal'
 
-export interface RevisionButtonProps {
-  noteContent: string
-}
-
-export const RevisionButton: React.FC<RevisionButtonProps> = ({ noteContent }) => {
+export const RevisionButton: React.FC = () => {
   const [show, setShow] = useState(false)
 
   return (
     <Fragment>
       <TranslatedIconButton size={'sm'} className={'mx-1'} icon={'history'} variant={'light'} i18nKey={'editor.documentBar.revision'} onClick={() => setShow(true)}/>
-      <RevisionModal show={show} onHide={() => setShow(false)} titleI18nKey={'editor.modal.revision.title'} icon={'history'} noteContent={noteContent}/>
+      <RevisionModal show={show} onHide={() => setShow(false)} titleI18nKey={'editor.modal.revision.title'} icon={'history'}/>
     </Fragment>
   )
 }
diff --git a/src/components/editor/document-bar/revisions/revision-modal.tsx b/src/components/editor/document-bar/revisions/revision-modal.tsx
index dc8b42e9d..c23059480 100644
--- a/src/components/editor/document-bar/revisions/revision-modal.tsx
+++ b/src/components/editor/document-bar/revisions/revision-modal.tsx
@@ -10,12 +10,11 @@ import { UserResponse } from '../../../../api/users/types'
 import { ApplicationState } from '../../../../redux'
 import { CommonModal, CommonModalProps } from '../../../common/modals/common-modal'
 import { ShowIf } from '../../../common/show-if/show-if'
-import { RevisionButtonProps } from './revision-button'
 import { RevisionModalListEntry } from './revision-modal-list-entry'
 import './revision-modal.scss'
 import { downloadRevision, getUserDataForRevision } from './utils'
 
-export const RevisionModal: React.FC<CommonModalProps & RevisionButtonProps> = ({ show, onHide, icon, titleI18nKey, noteContent }) => {
+export const RevisionModal: React.FC<CommonModalProps> = ({ show, onHide, icon, titleI18nKey }) => {
   useTranslation()
   const [revisions, setRevisions] = useState<RevisionListEntry[]>([])
   const [selectedRevisionTimestamp, setSelectedRevisionTimestamp] = useState<number | null>(null)
@@ -47,6 +46,8 @@ export const RevisionModal: React.FC<CommonModalProps & RevisionButtonProps> = (
     }).catch(() => setError(true))
   }, [selectedRevisionTimestamp, id])
 
+  const markdownContent = useSelector((state: ApplicationState) => state.documentContent.content)
+
   return (
     <CommonModal show={show} onHide={onHide} titleI18nKey={titleI18nKey} icon={icon} closeButton={true} size={'xl'} additionalClasses='revision-modal'>
       <Modal.Body>
@@ -75,7 +76,7 @@ export const RevisionModal: React.FC<CommonModalProps & RevisionButtonProps> = (
             <ShowIf condition={!error && !!selectedRevision}>
               <ReactDiffViewer
                 oldValue={selectedRevision?.content}
-                newValue={noteContent}
+                newValue={markdownContent}
                 splitView={false}
                 compareMethod={DiffMethod.WORDS}
                 useDarkTheme={darkModeEnabled}
diff --git a/src/components/editor/document-renderer-pane/document-render-pane.tsx b/src/components/editor/document-renderer-pane/document-render-pane.tsx
index 097fda4b5..2f1321d80 100644
--- a/src/components/editor/document-renderer-pane/document-render-pane.tsx
+++ b/src/components/editor/document-renderer-pane/document-render-pane.tsx
@@ -1,7 +1,9 @@
 import React, { RefObject, useState } from 'react'
 import { Dropdown } from 'react-bootstrap'
+import { useSelector } from 'react-redux'
 import useResizeObserver from 'use-resize-observer'
 import { TocAst } from '../../../external-types/markdown-it-toc-done-right/interface'
+import { ApplicationState } from '../../../redux'
 import { ForkAwesomeIcon } from '../../common/fork-awesome/fork-awesome-icon'
 import { ShowIf } from '../../common/show-if/show-if'
 import { LineMarkerPosition } from '../../markdown-renderer/types'
@@ -10,7 +12,6 @@ import { TableOfContents } from '../table-of-contents/table-of-contents'
 import { YAMLMetaData } from '../yaml-metadata/yaml-metadata'
 
 export interface DocumentRenderPaneProps {
-  content: string
   extraClasses?: string
   onFirstHeadingChange: (firstHeading: string | undefined) => void
   onLineMarkerPositionChanged?: (lineMarkerPosition: LineMarkerPosition[]) => void
@@ -23,7 +24,6 @@ export interface DocumentRenderPaneProps {
 }
 
 export const DocumentRenderPane: React.FC<DocumentRenderPaneProps> = ({
-  content,
   extraClasses,
   onFirstHeadingChange,
   onLineMarkerPositionChanged,
@@ -37,6 +37,7 @@ export const DocumentRenderPane: React.FC<DocumentRenderPaneProps> = ({
   const [tocAst, setTocAst] = useState<TocAst>()
   const { width } = useResizeObserver(rendererReference ? { ref: rendererReference } : undefined)
   const realWidth = width || 0
+  const markdownContent = useSelector((state: ApplicationState) => state.documentContent.content)
 
   return (
     <div className={`bg-light flex-fill pb-5 flex-row d-flex w-100 h-100 ${extraClasses ?? ''}`}
@@ -45,7 +46,7 @@ export const DocumentRenderPane: React.FC<DocumentRenderPaneProps> = ({
       <div className={'bg-light flex-fill'}>
         <FullMarkdownRenderer
           className={'flex-fill mb-3'}
-          content={content}
+          content={markdownContent}
           onFirstHeadingChange={onFirstHeadingChange}
           onLineMarkerPositionChanged={onLineMarkerPositionChanged}
           onMetaDataChange={onMetadataChange}
diff --git a/src/components/editor/document-renderer-pane/scrolling-document-render-pane.tsx b/src/components/editor/document-renderer-pane/scrolling-document-render-pane.tsx
index ea6cddd91..55b80c05e 100644
--- a/src/components/editor/document-renderer-pane/scrolling-document-render-pane.tsx
+++ b/src/components/editor/document-renderer-pane/scrolling-document-render-pane.tsx
@@ -1,4 +1,6 @@
 import React, { useMemo, useRef, useState } from 'react'
+import { useSelector } from 'react-redux'
+import { ApplicationState } from '../../../redux'
 import { LineMarkerPosition } from '../../markdown-renderer/types'
 import { useScrollToLineMark } from '../scroll/hooks/use-scroll-to-line-mark'
 import { useUserScroll } from '../scroll/hooks/use-user-scroll'
@@ -6,7 +8,6 @@ import { ScrollProps } from '../scroll/scroll-props'
 import { DocumentRenderPane, DocumentRenderPaneProps } from './document-render-pane'
 
 export const ScrollingDocumentRenderPane: React.FC<DocumentRenderPaneProps & ScrollProps> = ({
-  content,
   scrollState,
   wide,
   onFirstHeadingChange,
@@ -15,16 +16,16 @@ export const ScrollingDocumentRenderPane: React.FC<DocumentRenderPaneProps & Scr
   onScroll,
   onTaskCheckedChange
 }) => {
+  const markdownContent = useSelector((state: ApplicationState) => state.documentContent.content)
   const renderer = useRef<HTMLDivElement>(null)
   const [lineMarks, setLineMarks] = useState<LineMarkerPosition[]>()
 
-  const contentLineCount = useMemo(() => content.split('\n').length, [content])
+  const contentLineCount = useMemo(() => markdownContent.split('\n').length, [markdownContent])
   useScrollToLineMark(scrollState, lineMarks, contentLineCount, renderer)
   const userScroll = useUserScroll(lineMarks, renderer, onScroll)
 
   return (
     <DocumentRenderPane
-      content={content}
       extraClasses={'overflow-y-scroll'}
       rendererReference={renderer}
       wide={wide}
diff --git a/src/components/editor/editor.tsx b/src/components/editor/editor.tsx
index f0542f412..848666b0b 100644
--- a/src/components/editor/editor.tsx
+++ b/src/components/editor/editor.tsx
@@ -5,6 +5,7 @@ import useMedia from 'use-media'
 import { useApplyDarkMode } from '../../hooks/common/use-apply-dark-mode'
 import { useDocumentTitle } from '../../hooks/common/use-document-title'
 import { ApplicationState } from '../../redux'
+import { setDocumentContent } from '../../redux/document-content/methods'
 import { setEditorMode } from '../../redux/editor/methods'
 import { extractNoteTitle } from '../common/document-title/note-title-extractor'
 import { MotdBanner } from '../common/motd-banner/motd-banner'
@@ -34,7 +35,7 @@ const TASK_REGEX = /(\s*[-*] )(\[[ xX]])( .*)/
 export const Editor: React.FC = () => {
   const { t } = useTranslation()
   const untitledNote = t('editor.untitledNote')
-  const [markdownContent, setMarkdownContent] = useState(editorTestContent)
+  const markdownContent = useSelector((state: ApplicationState) => state.documentContent.content)
   const isWide = useMedia({ minWidth: 576 })
   const [documentTitle, setDocumentTitle] = useState(untitledNote)
   const noteMetadata = useRef<YAMLMetaData>()
@@ -49,6 +50,10 @@ export const Editor: React.FC = () => {
     rendererScrollState: { firstLineInView: 1, scrolledPercentage: 0 }
   }))
 
+  useEffect(() => {
+    setDocumentContent(editorTestContent)
+  }, [])
+
   const updateDocumentTitle = useCallback(() => {
     const noteTitle = extractNoteTitle(untitledNote, noteMetadata.current, firstHeading.current)
     setDocumentTitle(noteTitle)
@@ -71,9 +76,9 @@ export const Editor: React.FC = () => {
       const before = results[1]
       const after = results[3]
       lines[lineInMarkdown] = `${before}[${checked ? 'x' : ' '}]${after}`
-      setMarkdownContent(lines.join('\n'))
+      setDocumentContent(lines.join('\n'))
     }
-  }, [markdownContent, setMarkdownContent])
+  }, [markdownContent])
 
   useViewModeShortcuts()
 
@@ -105,12 +110,12 @@ export const Editor: React.FC = () => {
       <MotdBanner/>
       <div className={'d-flex flex-column vh-100'}>
         <AppBar mode={AppBarMode.EDITOR}/>
-        <DocumentBar title={documentTitle} noteContent={markdownContent} updateNoteContent={(newContent) => setMarkdownContent(newContent)}/>
+        <DocumentBar title={documentTitle}/>
         <Splitter
           showLeft={editorMode === EditorMode.EDITOR || editorMode === EditorMode.BOTH}
           left={
             <EditorPane
-              onContentChange={content => setMarkdownContent(content)}
+              onContentChange={setDocumentContent}
               content={markdownContent}
               scrollState={scrollState.editorScrollState}
               onScroll={onEditorScroll}
@@ -120,7 +125,6 @@ export const Editor: React.FC = () => {
           showRight={editorMode === EditorMode.PREVIEW || (editorMode === EditorMode.BOTH)}
           right={
             <ScrollingDocumentRenderPane
-              content={markdownContent}
               onFirstHeadingChange={onFirstHeadingChange}
               onMakeScrollSource={() => {
                 scrollSource.current = ScrollSource.RENDERER
diff --git a/src/components/pad-view-only/pad-view-only.tsx b/src/components/pad-view-only/pad-view-only.tsx
index 18ca94e66..1b3be3074 100644
--- a/src/components/pad-view-only/pad-view-only.tsx
+++ b/src/components/pad-view-only/pad-view-only.tsx
@@ -5,6 +5,7 @@ import { useParams } from 'react-router'
 import { getNote, Note } from '../../api/notes'
 import { useApplyDarkMode } from '../../hooks/common/use-apply-dark-mode'
 import { useDocumentTitle } from '../../hooks/common/use-document-title'
+import { setDocumentContent } from '../../redux/document-content/methods'
 import { extractNoteTitle } from '../common/document-title/note-title-extractor'
 import { MotdBanner } from '../common/motd-banner/motd-banner'
 import { ShowIf } from '../common/show-if/show-if'
@@ -42,7 +43,10 @@ export const PadViewOnly: React.FC = () => {
 
   useEffect(() => {
     getNote(id)
-      .then(note => setNoteData(note))
+      .then(note => {
+        setNoteData(note)
+        setDocumentContent(note.content)
+      })
       .catch(() => setError(true))
       .finally(() => setLoading(false))
   }, [id])
@@ -80,7 +84,6 @@ export const PadViewOnly: React.FC = () => {
           viewCount={noteData?.viewcount ?? 0}
         />
         <DocumentRenderPane
-          content={noteData?.content ?? ''}
           onFirstHeadingChange={onFirstHeadingChange}
           onMetadataChange={onMetadataChange}
           onTaskCheckedChange={() => false}
diff --git a/src/redux/document-content/methods.ts b/src/redux/document-content/methods.ts
new file mode 100644
index 000000000..f1c13a795
--- /dev/null
+++ b/src/redux/document-content/methods.ts
@@ -0,0 +1,10 @@
+import { store } from '..'
+import { DocumentContentActionType, SetDocumentContentAction } from './types'
+
+export const setDocumentContent = (content: string): void => {
+  const action: SetDocumentContentAction = {
+    type: DocumentContentActionType.SET_DOCUMENT_CONTENT,
+    content: content
+  }
+  store.dispatch(action)
+}
diff --git a/src/redux/document-content/reducers.ts b/src/redux/document-content/reducers.ts
new file mode 100644
index 000000000..d030f1ed1
--- /dev/null
+++ b/src/redux/document-content/reducers.ts
@@ -0,0 +1,15 @@
+import { Reducer } from 'redux'
+import { DocumentContent, DocumentContentAction, DocumentContentActionType, SetDocumentContentAction } from './types'
+
+export const initialState: DocumentContent = {
+  content: ''
+}
+
+export const DocumentContentReducer: Reducer<DocumentContent, DocumentContentAction> = (state: DocumentContent = initialState, action: DocumentContentAction) => {
+  switch (action.type) {
+    case DocumentContentActionType.SET_DOCUMENT_CONTENT:
+      return { content: (action as SetDocumentContentAction).content }
+    default:
+      return state
+  }
+}
diff --git a/src/redux/document-content/types.ts b/src/redux/document-content/types.ts
new file mode 100644
index 000000000..6d87139b2
--- /dev/null
+++ b/src/redux/document-content/types.ts
@@ -0,0 +1,17 @@
+import { Action } from 'redux'
+
+export enum DocumentContentActionType {
+  SET_DOCUMENT_CONTENT = 'document-content/set',
+}
+
+export interface DocumentContent {
+  content: string
+}
+
+export interface DocumentContentAction extends Action<DocumentContentActionType> {
+  type: DocumentContentActionType
+}
+
+export interface SetDocumentContentAction extends DocumentContentAction {
+  content: string
+}
diff --git a/src/redux/index.ts b/src/redux/index.ts
index 610521999..0bf9f8f70 100644
--- a/src/redux/index.ts
+++ b/src/redux/index.ts
@@ -7,6 +7,8 @@ import { BannerState } from './banner/types'
 import { ConfigReducer } from './config/reducers'
 import { DarkModeConfigReducer } from './dark-mode/reducers'
 import { DarkModeConfig } from './dark-mode/types'
+import { DocumentContentReducer } from './document-content/reducers'
+import { DocumentContent } from './document-content/types'
 import { EditorConfigReducer } from './editor/reducers'
 import { EditorConfig } from './editor/types'
 import { UserReducer } from './user/reducers'
@@ -19,6 +21,7 @@ export interface ApplicationState {
   apiUrl: ApiUrlObject;
   editorConfig: EditorConfig;
   darkMode: DarkModeConfig;
+  documentContent: DocumentContent;
 }
 
 export const allReducers: Reducer<ApplicationState> = combineReducers<ApplicationState>({
@@ -27,7 +30,8 @@ export const allReducers: Reducer<ApplicationState> = combineReducers<Applicatio
   banner: BannerReducer,
   apiUrl: ApiUrlReducer,
   editorConfig: EditorConfigReducer,
-  darkMode: DarkModeConfigReducer
+  darkMode: DarkModeConfigReducer,
+  documentContent: DocumentContentReducer
 })
 
 export const store = createStore(allReducers)