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import CodeMirror from 'codemirror';
import { createAtom, makeAutoObservable, observable } from 'mobx';
export default class EditorStore {
atom;
/** @type {CodeMirror} */
editor = null;
/** @type {string} */
value = '';
/** @type {boolean} */
showLineNumbers = false;
/** @type {boolean} */
showLigatures = true;
constructor() {
this.atom = createAtom('EditorStore');
makeAutoObservable(this, {
atom: false,
editor: observable.ref,
});
}
/**
* Attaches a new CodeMirror instance.
*
* The store will node subscribe to any CodeMirror events. Instead,
* the editor component should subscribe to them and relay them to the store.
*
* @param {CodeMirror} newEditor The new CodeMirror instance
*/
updateEditor(newEditor) {
this.editor = newEditor;
}
/**
* Updates the contents of the editor.
*
* @param {string} newValue The new contents of the editor
*/
updateValue(newValue) {
this.value = newValue;
}
reportChanged() {
this.atom.reportChanged();
}
/**
* @returns {boolean} `true` if there is history to undo
*/
get canUndo() {
this.atom.reportObserved();
if (!this.editor) {
return false;
}
const { undo: undoSize } = this.editor.historySize();
return undoSize > 0;
}
undo() {
this.editor.undo();
}
/**
* @returns {boolean} `true` if there is history to redo
*/
get canRedo() {
this.atom.reportObserved();
if (!this.editor) {
return false;
}
const { redo: redoSize } = this.editor.historySize();
return redoSize > 0;
}
redo() {
this.editor.redo();
}
toggleLineNumbers() {
this.showLineNumbers = !this.showLineNumbers;
}
toggleLigatures() {
this.showLigatures = !this.showLigatures;
}
}
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