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views.js
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52 lines (43 loc) · 1.6 KB
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import {Compartment, EditorState} from '@codemirror/state';
import {EditorView} from '@codemirror/view';
import {getLanguageExtension} from './languages';
const viewLangCompartments = new WeakMap();
/**
* Create a new editor view.
*
* @param {String} usageType
* @param {{parent: Element, doc: String, extensions: Array}} config
* @returns {EditorView}
*/
export function createView(usageType, config) {
const langCompartment = new Compartment();
config.extensions.push(langCompartment.of([]));
const commonEventData = {
usage: usageType,
editorViewConfig: config,
libEditorView: EditorView,
libEditorState: EditorState,
libCompartment: Compartment,
};
// Emit a pre-init public event so the user can tweak the config before instance creation
window.$events.emitPublic(config.parent, 'library-cm6::pre-init', commonEventData);
const ev = new EditorView(config);
viewLangCompartments.set(ev, langCompartment);
// Emit a post-init public event so the user can gain a reference to the EditorView
window.$events.emitPublic(config.parent, 'library-cm6::post-init', {editorView: ev, ...commonEventData});
return ev;
}
/**
* Set the language mode of an EditorView.
*
* @param {EditorView} ev
* @param {string} modeSuggestion
* @param {string} content
*/
export async function updateViewLanguage(ev, modeSuggestion, content) {
const compartment = viewLangCompartments.get(ev);
const language = await getLanguageExtension(modeSuggestion, content);
ev.dispatch({
effects: compartment.reconfigure(language || []),
});
}