fix: Move content into to frontend directory

Doing this BEFORE the merge prevents a lot of merge conflicts.

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

frontend/src/components/render-page/window-post-message-communicator/rendering-message.ts

@@ -0,0 +1,140 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import type { ScrollState } from '../../editor-page/synced-scroll/scroll-props'
+import type { SlideOptions } from '../../../redux/note-details/types/slide-show-options'
+import type { DarkModePreference } from '../../../redux/dark-mode/types'
+
+export enum CommunicationMessageType {
+  SET_MARKDOWN_CONTENT = 'SET_MARKDOWN_CONTENT',
+  RENDERER_READY = 'RENDERER_READY',
+  SET_DARKMODE = 'SET_DARKMODE',
+  ON_FIRST_HEADING_CHANGE = 'ON_FIRST_HEADING_CHANGE',
+  ENABLE_RENDERER_SCROLL_SOURCE = 'ENABLE_RENDERER_SCROLL_SOURCE',
+  DISABLE_RENDERER_SCROLL_SOURCE = 'DISABLE_RENDERER_SCROLL_SOURCE',
+  SET_SCROLL_STATE = 'SET_SCROLL_STATE',
+  ON_HEIGHT_CHANGE = 'ON_HEIGHT_CHANGE',
+  SET_BASE_CONFIGURATION = 'SET_BASE_CONFIGURATION',
+  GET_WORD_COUNT = 'GET_WORD_COUNT',
+  ON_WORD_COUNT_CALCULATED = 'ON_WORD_COUNT_CALCULATED',
+  SET_SLIDE_OPTIONS = 'SET_SLIDE_OPTIONS',
+  IMAGE_UPLOAD = 'IMAGE_UPLOAD',
+  EXTENSION_EVENT = 'EXTENSION_EVENT'
+}
+
+export interface NoPayloadMessage<TYPE extends CommunicationMessageType> {
+  type: TYPE
+}
+
+export interface SetDarkModeMessage {
+  type: CommunicationMessageType.SET_DARKMODE
+  preference: DarkModePreference
+}
+
+export interface ExtensionEvent {
+  type: CommunicationMessageType.EXTENSION_EVENT
+  eventName: string
+  payload: unknown
+}
+
+export interface ImageDetails {
+  alt?: string
+  src: string
+  title?: string
+}
+
+export interface ImageUploadMessage {
+  type: CommunicationMessageType.IMAGE_UPLOAD
+  dataUri: string
+  fileName: string
+  lineIndex?: number
+  placeholderIndexInLine?: number
+}
+
+export interface SetBaseUrlMessage {
+  type: CommunicationMessageType.SET_BASE_CONFIGURATION
+  baseConfiguration: BaseConfiguration
+}
+
+export interface GetWordCountMessage {
+  type: CommunicationMessageType.GET_WORD_COUNT
+}
+
+export interface SetMarkdownContentMessage {
+  type: CommunicationMessageType.SET_MARKDOWN_CONTENT
+  content: string[]
+}
+
+export interface SetScrollStateMessage {
+  type: CommunicationMessageType.SET_SCROLL_STATE
+  scrollState: ScrollState
+}
+
+export interface OnFirstHeadingChangeMessage {
+  type: CommunicationMessageType.ON_FIRST_HEADING_CHANGE
+  firstHeading: string | undefined
+}
+
+export interface SetSlideOptionsMessage {
+  type: CommunicationMessageType.SET_SLIDE_OPTIONS
+  slideOptions: SlideOptions
+}
+
+export interface OnHeightChangeMessage {
+  type: CommunicationMessageType.ON_HEIGHT_CHANGE
+  height: number
+}
+
+export interface OnWordCountCalculatedMessage {
+  type: CommunicationMessageType.ON_WORD_COUNT_CALCULATED
+  words: number
+}
+
+export type CommunicationMessages =
+  | NoPayloadMessage<CommunicationMessageType.RENDERER_READY>
+  | NoPayloadMessage<CommunicationMessageType.ENABLE_RENDERER_SCROLL_SOURCE>
+  | NoPayloadMessage<CommunicationMessageType.DISABLE_RENDERER_SCROLL_SOURCE>
+  | SetDarkModeMessage
+  | SetBaseUrlMessage
+  | GetWordCountMessage
+  | SetMarkdownContentMessage
+  | SetScrollStateMessage
+  | OnFirstHeadingChangeMessage
+  | SetSlideOptionsMessage
+  | OnHeightChangeMessage
+  | OnWordCountCalculatedMessage
+  | ImageUploadMessage
+  | ExtensionEvent
+
+export type EditorToRendererMessageType =
+  | CommunicationMessageType.SET_MARKDOWN_CONTENT
+  | CommunicationMessageType.SET_DARKMODE
+  | CommunicationMessageType.SET_SCROLL_STATE
+  | CommunicationMessageType.SET_BASE_CONFIGURATION
+  | CommunicationMessageType.GET_WORD_COUNT
+  | CommunicationMessageType.SET_SLIDE_OPTIONS
+  | CommunicationMessageType.DISABLE_RENDERER_SCROLL_SOURCE
+
+export type RendererToEditorMessageType =
+  | CommunicationMessageType.RENDERER_READY
+  | CommunicationMessageType.ENABLE_RENDERER_SCROLL_SOURCE
+  | CommunicationMessageType.ON_FIRST_HEADING_CHANGE
+  | CommunicationMessageType.SET_SCROLL_STATE
+  | CommunicationMessageType.ON_HEIGHT_CHANGE
+  | CommunicationMessageType.ON_WORD_COUNT_CALCULATED
+  | CommunicationMessageType.IMAGE_UPLOAD
+  | CommunicationMessageType.EXTENSION_EVENT
+
+export enum RendererType {
+  DOCUMENT = 'document',
+  INTRO = 'intro',
+  SLIDESHOW = 'slideshow',
+  MOTD = 'motd'
+}
+
+export interface BaseConfiguration {
+  baseUrl: string
+  rendererType: RendererType
+}