/*
* Smart GWT (GWT for SmartClient)
* Copyright 2008 and beyond, Isomorphic Software, Inc.
*
* Smart GWT is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation. Smart GWT is also
* available under typical commercial license terms - see
* http://smartclient.com/license
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package com.smartgwt.client.widgets.form.fields.events;
import com.smartgwt.client.event.*;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.event.shared.HasHandlers;
public interface HasShowValueHandlers extends HasHandlers {
/**
* This method will be called whenever this form item's value is being set via a programmatic call to e.g: {@link
* com.smartgwt.client.widgets.form.DynamicForm#setValues DynamicForm.setValues} or {@link
* com.smartgwt.client.widgets.form.fields.FormItem#setValue FormItem.setValue} and may be overridden by CanvasItems
* intended to support displaying data values to update the embedded Canvas to reflect the value passed in.
*
* @param handler the showValue handler
* @return {@link HandlerRegistration} used to remove this handler
*/
HandlerRegistration addShowValueHandler(ShowValueHandler handler);
}