vaadin-framework/uitest/src/main/java/com/vaadin/tests/components/textfield/AutomaticImmediate.java

package com.vaadin.tests.components.textfield;

import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUIWithLog;
import com.vaadin.ui.Button;
import com.vaadin.ui.CheckBox;
import com.vaadin.v7.data.Property.ValueChangeListener;
import com.vaadin.v7.ui.TextField;

/**
 * Test to verify fields become implicitly "immediate" when adding value change
 * listener to them.
 *
 * @since 7.2
 * @author Vaadin Ltd
 */
public class AutomaticImmediate extends AbstractTestUIWithLog {
    static final String BUTTON = "button";
    static final String EXPLICIT_FALSE = "explicit-false";
    static final String FIELD = "field";
    static final String LISTENER_TOGGLE = "listener-toggle";

    /*
     * (non-Javadoc)
     *
     * @see com.vaadin.tests.components.AbstractTestUI#setup(com.vaadin.server.
     * VaadinRequest)
     */
    @Override
    protected void setup(VaadinRequest request) {

        final TextField textField = new TextField() {

            /*
             * (non-Javadoc)
             *
             * @see com.vaadin.ui.AbstractField#fireValueChange(boolean)
             */
            @Override
            protected void fireValueChange(boolean repaintIsNotNeeded) {
                log("fireValueChange");
                super.fireValueChange(repaintIsNotNeeded);
            }
        };
        textField.setId(FIELD);

        final ValueChangeListener listener = event -> log(
                "Value changed: " + event.getProperty().getValue());

        final CheckBox checkBox = new CheckBox("Toggle listener");
        checkBox.addValueChangeListener(valueChange -> {
            if (checkBox.getValue()) {
                textField.addValueChangeListener(listener);
            } else {
                textField.removeValueChangeListener(listener);
            }
        });
        checkBox.setId(LISTENER_TOGGLE);

        Button b = new Button(
                "setImmediate(false), sets explicitly false and causes server roundtrip",
                event -> textField.setImmediate(false));
        b.setId(EXPLICIT_FALSE);

        Button b2 = new Button("Hit server, causes server roundtrip", event -> {
        });
        b2.setId(BUTTON);

        addComponent(textField);
        addComponent(checkBox);
        addComponent(b);
        addComponent(b2);

    }

    /*
     * (non-Javadoc)
     *
     * @see com.vaadin.tests.components.AbstractTestUI#getTestDescription()
     */
    @Override
    protected String getTestDescription() {
        return "Field should be immediate automatically if it has value change listener";
    }

    /*
     * (non-Javadoc)
     *
     * @see com.vaadin.tests.components.AbstractTestUI#getTicketNumber()
     */
    @Override
    protected Integer getTicketNumber() {
        return 8029;
    }

}