EVT - Text Annotator

​ ​ This library was created to provide Digital Scholarly Editions users, and specifically EVT-based DSEs, with an easy way to add their own annotations to the edition texts. It is based on the standard W3C - Web Annotation Data Model and it has been developed using the following libraries: ​

• https://github.com/openannotation/xpath-range
• https://github.com/tilgovi/dom-anchor-text-quote
• https://github.com/tilgovi/dom-anchor-text-position ​

Installation

​ Installation is performed via npm, use this command: npm install evt-text-annotator ​

API Documentation

​ The library exposes two APIs: createAnnotation and getAnnotation. ​

createAnnotation(root, range, note)

​ This API takes three values ​​as input: (root, range, note).

• root identifies the HTML element generated by the text selection made by the user. ​
• range identifies the range that is generated when the user selects the text. ​
• note identifies the note that the user wants to insert within the selection. ​ The return of this API is an Object conform to W3C - Web Annotation Data Model containing the text of the note. ​​

getAnnotation(anno)

​ This API takes only one value ​​(anno) as input.

• anno identifies the object that is generated using the createAnnotation API. ​ The return of this API is a Range. ​

Usage

​ A simple example of use of the library: ​

import {annotator}  from "evt-text-annotator";
​
const range = selection.getRangeAt(0); // Range
const root = range.commonAncestorContainer.parentElement; // HTMLElement
const note = "my note" // input String
// create annotation from text selection
const anno = annotator.createAnnotation(root, range, note); // Annotation
// get a Range form an annotation 
const range_anno = annotator.getAnnotation(anno); // Range

​ ​