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calliope-editor

Calliope

An extensible WYSWYG editor based on Lexical.

What is Calliope?

Calliope Editor is a ready-to-use editor based on lexical. It is intended to be easy to use and ships with several ready to use plugins.

It does not contain a graphical interface beyond that of the editor itself, and is therefore not tied to any particular UI.

Overview

• Built in plugins
• Installation
• Usage
• Configuration
• Utility functions
• Editor commands
• Valid code languages

Built in plugins

• Code highlight and code formatting.
• Drag and drop images.
• Emojis (english default).
• Floating link editor.
• Table cell.
• Mentions
• Citation block
• Speech to text
• Text spoiler
• Block spoiler (collapsible)
• Insert tweets
• Insert videos (Youtube, Facebook, Dailymotion, Soundcloud, Twitch).
• Basic formatting (bold, italic, underline, strikethrough, superscript, subscript).
• Text coloring (font and background).
• Different font types
• Different block types (heading, bullet list, numbered list, check list, quote and code block).

Installation

Install the yarn pacakge.

yarn add calliope-editor

Import the editor

import { CalliopeEditor } from 'calliope-editor';

Usage

The editor component takes three parameters

• config (required) : an object containing configuration options (detailed below).
• containerRef (required): a react ref used to manipulate the editor.
• setFormats (optional): a function used to set the formats applied to the selected text. Useful when building UIs.

<CalliopeEditor
  config={config}
  containerRef={containerRef}
  setFormats={setFormats}
/>

Configuration

The configuration object (config parameter) looks like this.

{
  placeholderText: t('toolbar.placeholderText'),
  initialState: initialState,
  isReadOnly: false,
  autoFocus: true,
  onError: (error) => {
    throw error;
  },
  plugins: [],
  imageConfig: {
    addCaptionText: t('internal.addCaption'),
    defaultCaptionText: t('internal.enterCaption'),
  },
  twitterConfig: {
    loadingComponent: ({ tweetId }) => (
      <p>
        {t('internal.loadingTweet')}...(ID={tweetId})
      </p>
    ),
  },
  collapsibleConfig: {
    open: true,
  },
  citation: {
    sourceLinkComponent: ({ sourceLink }) => (
      <a href={sourceLink} className="source-link-component">
        <FontAwesomeIcon icon={sourceIcon} size="lg" />
      </a>
    ) /*,
    authorComponent: ({ author }) => (
      <a href={author.link} className="author-link-container">
        <AccountAvatar
          avatar={author.avatar}
          username={author.name}
          size="5px"
          shape="circle"
        />
        <span className="author-link-quote">{author.name}</span>
      </a>
    ),*/,
  },
  mentions: {
    onSearchChange: onSearchChange,
    onAddMention: (mention) => {
      setMentions([...mentions, mention.name]);
    },
    onRemoveMention: ({ name, link }) => {
      const newMentions = mentions.filter((m) => m !== name);
      setMentions(newMentions);
    },
    entryComponent: ({ option: { avatar, name, link } }) => (
      <>
        <AccountAvatar avatar={avatar} username={name} size="5px" shape="circle" />
        &nbsp; <strong className="user-name-mentions">{name}</strong>
      </>
    ),
    mentionsData: suggestions,
  },
  emojiConfig: {
    emojiData: emojiData,
  },
  dragAndDropImage: {
    handleDroppedFile: async (file) => {
      const resp = await uploadFileToServer(file);
      const { src } = resp;

      if (src === null) {
        notification.error({
          message: 'Failed to upload File',
          description: "Couldn't upload file to the server (file type not allowed).",
          placement: 'topRight',
        });
        return;
      }
      const imageSrc = `/static/uploads/${src}`;
      containerRef.current.executeCommand('INSERT_IMAGE', {
        src: imageSrc,
        altText: file.name,
      });
    },
  },
}

Utility functions

Accesible using the containerRef ref.

Name	Parameters	Description
getContent	() => Lexical Editor State	Gets get the current editor content. Returns a Lexical Editor State as JSON.
clear	() => void	Clears the editor.
executeCommand	({commandName: string, commandParams: any}) => void	Executes and editor command (toggle a block or a font style).
focus	() => void	Sets the focus for the editor.

Editor commands

Name	Parameters	Description
UNDO	none	Undo last command
REDO	none	Redo last undone command
FORMAT	string. One of bold| italic | underline | strikethrough | superscript | subscript | code	Apply basic text formatting.
KEYBOARD	none	Apply keyboard formatting.
SPOILER	none	Apply text spoiler formatting.
LINK	string link to insert	Insert link
ALIGN	string one of left | center | right | justify	Insert link
INDENT	none	Indent text
OUTDENT	none	Outdent text
PARAGRAPH	none	Apply paragraph block style to selected text
BULLET_LIST	none	Apply bullet list formatting to selected text
NUMBERED_LIST	none	Apply numbered list formatting to selected text
CHECK	none	Apply check list formatting to selected text
H1	none	Apply h1 formatting to selected text
H2	none	Apply h2 formatting to selected text
H3	none	Apply h3 formatting to selected text
QUOTE	none	Apply quote block formatting to selected text
CODE_BLOCK	none	Apply code block formatting (w/format highlighting) to selected text.
CODE_LANGUAGE_CHANGE	value: string - a code language. See list of valid code languages below	Change the code language inside a code block. The current block must already be a code block for this method to work.
CHANGE_FONT	string a valid font family. Suggested values are (Arial, Courier New, Georgia, Times New Roman, Trebuchet MS, Verdana)	Chang the font family type.
CHANGE_FONT_SIZE	string a valid font size. 'px' (ie: '10px')	Chang the font size.
CHANGE_FONT_COLOR	string a valid hexadecimal color value.	Change the font color.
CHANGE_FONT_BG_COLOR	string a valid hexadecimal color value.	Change the background color.
INSERT_RULE	none	Insert a horizontal rule.
INSERT_IMAGE	object { altText: string, src: string }. src is the image url. alt text is the alt text for the image. Neither can be null.	Insert a resizeable image into the editor.
INSERT_TWEET	string tweetId. The id in the tweet url (Twitter urls are formatted like this: twitter.com//status/)	Insert a tweet into the editor.
INSERT_TABLE	object {columns: integer, rows: integer}	Insert a table into the editor.
INSERT_EQUATION	object { equation: string, inline: boolean }. The equation must be a valid latex formula. Inline specifies wether the equation is rendered on its own line or not.	Insert a LaTeX equation into the editor. Only Valid Katex formulas accepted.
INSERT_VIDEO	url: string . The URL of the video in question. Look below for accepted video sites.	Insert video content into the editor.
INSERT_EXCALIDRAW	none	Open excalidraw popup. This does not insert anything into the editor, the insertion is done when the user clicks the save button.
INSERT_BLOCK_SPOILER	open: boolean	Insert block spoiler (a collapsible container akin to html's summary).
SPEECH_TO_TEXT	isSpeechToText: boolean - indicates wether speech to text is active or not	Open the microphone to convert speech to text. When switched off it will insert the captured text into the editor
INSERT_CITE_QUOTE	{ author: { name: string, link: string}, source: { content: string, link: string } }	Insert a citation.

Valid code languages

The following code languages are accepted by the highlighter. The value column indicates the value passed as the parameter of the CHANGE_CODE_LANGUAGE command.

Value	Language
c	C
clike	C-Like
objc	Objective-C
html	HTML
xml	XML
css	CSS
sql	SQL
js	JavaScript
markdown	Markdown
py	Python
rust	Rust
swift	Swift
plain	Plain Text
ts	Typescript