undo undo.ts

100% Statements 8/8

100% Branches 4/4

100% Functions 1/1

100% Lines 8/8

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  import type { IEditor } from 'roosterjs-content-model-types';
 
/**
 * Undo to last undo snapshot
 * @param editor The editor to undo with
 */
export function undo(editor: IEditor): void {
    editor.focus();
 
    const manager = editor.getSnapshotsManager();
 
    if (manager.hasNewContent) {
        editor.takeSnapshot();
    }
 
    const snapshot = manager.move(-1);
 
    if (snapshot) {
        editor.restoreSnapshot(snapshot);
    }
}