/**
    * Copyright 2010 The Kuali Foundation Licensed under the
    * Educational Community License, Version 2.0 (the "License"); you may
    * not use this file except in compliance with the License. You may
    * obtain a copy of the License at
    *
    * http://www.osedu.org/licenses/ECL-2.0
    *
    * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an "AS IS"
   * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
   * or implied. See the License for the specific language governing
   * permissions and limitations under the License.
   */
  
  package org.kuali.student.common.ui.client.configurable.mvc.sections;
  
  import org.kuali.student.common.ui.client.widgets.KSLabel;
  import org.kuali.student.common.ui.client.widgets.layout.VerticalFlowPanel;
  import org.kuali.student.common.ui.client.widgets.menus.KSListPanel;
  
  import com.google.gwt.user.client.ui.Composite;
  import com.google.gwt.user.client.ui.Widget;
  
  /**
   * The validation message panel used for field elements, adds validation errors to a list and styles
   * them appropriately.
   * 
   * @author Kuali Student Team
   *
   */
  public class ValidationMessagePanel extends Composite{
  	
  	private VerticalFlowPanel container = new VerticalFlowPanel();
  	private KSListPanel errorListPanel = new KSListPanel();
  	private KSListPanel warnListPanel = new KSListPanel();
  	private int warnCount = 0;
  	private int errorCount = 0;
  	private boolean topMargin = true;
  	
  	public ValidationMessagePanel(){
  		this.initWidget(container);
  		container.add(errorListPanel);
  		container.add(warnListPanel);
  		errorListPanel.addStyleName("ks-form-module-validation-errors");
  		warnListPanel.addStyleName("ks-form-module-validation-warnings");		
  	}
  	
  	public ValidationMessagePanel(boolean topMargin){
  		this.initWidget(errorListPanel);
  		this.topMargin = topMargin;
  	}
  	
  	public void addErrorMessage(KSLabel message){
  		if(getMessageCount() == 0 && topMargin){
  			message.addStyleName("ks-form-module-single-line-margin");
  		}		
  		errorListPanel.add(message);
  		errorCount++;
  	}
  	
  	public void addWarnMessage(Widget message){
  		if(getMessageCount() == 0 && topMargin){
  			message.addStyleName("ks-form-module-single-line-margin");
  		}
  		warnListPanel.add(message);
  		warnCount++;		
  	}
  	
  	public boolean hasWarnings(){
  		return (warnCount > 0);
  	}
  	
  	public void clearErrors(){
  		errorListPanel.clear();
  		errorCount = 0;
  	}
  	
  	public void clearWarnings(){
  		warnListPanel.clear();
  		warnCount = 0;
  	}
  	
  	public int getMessageCount(){
  		return errorCount + warnCount;
  	}
  }