/*
    * Copyright (C) 2003-2009 eXo Platform SAS.
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Affero General Public License
    * as published by the Free Software Foundation; either version 3
    * of the License, or (at your option) any later version.
    *
    * This program 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 General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see<http://www.gnu.org/licenses/>.
   */
  package org.exoplatform.wcm.webui.validator;
  
  import org.exoplatform.web.application.ApplicationMessage;
  import org.exoplatform.webui.core.UIComponent;
  import org.exoplatform.webui.exception.MessageException;
  import org.exoplatform.webui.form.UIForm;
  import org.exoplatform.webui.form.UIFormInput;
  import org.exoplatform.webui.form.validator.Validator;
  
  /**
   * Created by The eXo Platform SAS
   * Author : Phan Le Thanh Chuong
   *          chuong_phan@exoplatform.com, phan.le.thanh.chuong@gmail.com
   * Oct 15, 2009
   */
  public class ZeroNumberValidator implements Validator {
  
    @SuppressWarnings("unchecked")
    public void validate(UIFormInput uiInput) throws Exception {
      if (uiInput.getValue()==null || ((String)uiInput.getValue()).length()==0) return;
      UIComponent uiComponent = (UIComponent) uiInput ;
      UIForm uiForm = uiComponent.getAncestorOfType(UIForm.class) ;
      String label;
      try{
        label = uiForm.getLabel(uiInput.getName());
      } catch(Exception e) {
        label = uiInput.getName();
      }
      label = label.trim();
      if(label.charAt(label.length() - 1) == ':') label = label.substring(0, label.length() - 1);
      if (((String)uiInput.getValue()).charAt(0) == '0') {
        Object[] args = { label, uiInput.getBindingField() };
        throw new MessageException(new ApplicationMessage("ZeroValidator.msg.Invalid-number", args)) ;
      }
    }
  
  }