title: How to prevent closing of cell edit mode on validation errors with custom vue components in ag-grid
body: <p>I have succesfully rendered my own component as the cellEditor and would like and on-leave I would like it to try to validate the value and prevent the closing if it fails. </p>
  
  <p>If I look at <a href="https://www.ag-grid.com/javascript-grid-cell-editing/#editing-api" rel="nofollow noreferrer">this</a> then <a href="https://www.ag-grid.com/javascript-grid-cell-editing/#editing-api" rel="nofollow noreferrer">https://www.ag-grid.com/javascript-grid-cell-editing/#editing-api</a> there's cancelable callback functions for editing. But in this callback function is there a way to access the current instantiated component? I would think that would be the easiest way to handle this.</p>
  
  <p>I'm using vee-validate so the validation function is async, just to keep in mind.</p>