Form Conditionally Required Sample(RequiredIfValidator) (Smart GWT) : Form Validation « GWT « Java

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Java » GWT » Form ValidationScreenshots 
Form Conditionally Required Sample(RequiredIfValidator) (Smart GWT)
Form Conditionally Required Sample(RequiredIfValidator) (Smart GWT)
  
/*
 * SmartGWT (GWT for SmartClient)
 * Copyright 2008 and beyond, Isomorphic Software, Inc.
 *
 * SmartGWT 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.  SmartGWT 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.sample.showcase.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.types.TitleOrientation;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.ButtonItem;
import com.smartgwt.client.widgets.form.fields.FormItem;
import com.smartgwt.client.widgets.form.fields.RadioGroupItem;
import com.smartgwt.client.widgets.form.fields.TextItem;
import com.smartgwt.client.widgets.form.fields.ToolbarItem;
import com.smartgwt.client.widgets.form.fields.events.ClickEvent;
import com.smartgwt.client.widgets.form.validator.RequiredIfFunction;
import com.smartgwt.client.widgets.form.validator.RequiredIfValidator;

public class Showcase implements EntryPoint {
  public void onModuleLoad() {
    RootPanel.get().add(getViewPanel());
  }

  public Canvas getViewPanel() {

    final DynamicForm form new DynamicForm();
    form.setWidth(250);
    form.setTitleOrientation(TitleOrientation.TOP);

    ToolbarItem toolbarItem = new ToolbarItem();

    IButton button = new IButton("First");
    IButton button2 = new IButton("Second");
    toolbarItem.setButtons(button, button2);

    final RadioGroupItem radioGroupItem = new RadioGroupItem();
    radioGroupItem.setName("willAttend");
    radioGroupItem.setColSpan("*");
    radioGroupItem.setRequired(true);
    radioGroupItem.setVertical(false);
    radioGroupItem.setValueMap("Yes""No");
    radioGroupItem.setRedrawOnChange(true);
    radioGroupItem.setTitle("Will you be attending the meeting on April 4th? If no, please provide a reason");

    TextItem textItem = new TextItem();
    textItem.setName("reason");
    textItem.setTitle("Reason");
    RequiredIfValidator ifValidator = new RequiredIfValidator();
    ifValidator.setExpression(new RequiredIfFunction() {
      public boolean execute(FormItem formItem, Object value) {
        String valueStr = (StringradioGroupItem.getValue();
        return "No".equals(valueStr);
      }
    });
    ifValidator.setErrorMessage("Please provide a reason");

    textItem.setValidators(ifValidator);

    ButtonItem buttonItem = new ButtonItem("validate""Validate");
    buttonItem.addClickHandler(new com.smartgwt.client.widgets.form.fields.events.ClickHandler() {
      public void onClick(ClickEvent event) {
        form.validate();
      }
    });

    form.setFields(toolbarItem, radioGroupItem, textItem, buttonItem);
    return form;

  }

}

   
    
  
SmartGWT.zip( 9,880 k)
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