Check for dirty (Uncommitted) data of current view port (page) on a button click or any event in ADF

Sometimes we need to check for uncommitted data on page and perform actions according to that, Suppose there is a button to navigate to another page but only if there is no uncommitted data in current page
We can use uncommitted data warning property of af:document to show an alert dialog but in that way, we can't execute our custom logic

Previously I have posted about checking dirty data of a transactional data control but in that, we need to check that for each data control separately that is rendering on page



In this scenario, we can check all data controls, regions or any component that makes use of data control of current viewport

This is my page with Departments table and Employes form

and see this simple code on button action to check dirty data for the current page

import oracle.adf.controller.ControllerContext;
import oracle.adf.controller.ViewPortContext;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;


    /**Method to check dirty data for current view port
     * @return
     */
    public String checkDirtyDataAction() {
        ControllerContext controllerContext=ControllerContext.getInstance();
        ViewPortContext currentRootViewPort = controllerContext.getCurrentRootViewPort();
        boolean isDataDirty = currentRootViewPort.isDataDirty();
        if (true == isDataDirty) {
            FacesContext.getCurrentInstance().addMessage(null, new FacesMessage("There is uncommittaed data on page"));
        }
        return null;
    }

Now change any attribute's value and click on button to see result, I have changed Salary to 6000 and on button click currentRootViewPort.isDataDirty() returns true

Cheers :) Happy Learning