/**
    * Copyright 2005-2013 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.opensource.org/licenses/ecl2.php
    *
   * 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.rice.krad.uif.widget;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.krad.datadictionary.parse.BeanTag;
  import org.kuali.rice.krad.datadictionary.parse.BeanTagAttribute;
  import org.kuali.rice.krad.uif.CssConstants;
  import org.kuali.rice.krad.uif.component.Component;
  import org.kuali.rice.krad.uif.container.Group;
  import org.kuali.rice.krad.uif.layout.LayoutManager;
  import org.kuali.rice.krad.uif.view.View;
  
  /**
   * Decorates a group with scroll functionality
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  @BeanTag(name = "scrollpane-bean", parent = "Uif-Scrollpane")
  public class Scrollpane  extends WidgetBase {
      private static final long serialVersionUID = 3853028195825084261L;
  
      private String height;
  
      @Override
      public void performFinalize(View view, Object model, Component parent) {
          super.performFinalize(view, model, parent);
  
          buildCSSforScrollPane(parent);
      }
  
      private void buildCSSforScrollPane(Component parent) {
          LayoutManager layoutManager = ((Group) parent).getLayoutManager();
          if (StringUtils.isNotBlank(getHeight())) {
              if (!StringUtils.contains(layoutManager.getStyle(), CssConstants.HEIGHT)) {
                  layoutManager.appendToStyle(CssConstants.HEIGHT + getHeight() +";");
              }
  
              if (!StringUtils.contains(layoutManager.getStyle(), CssConstants.OVERFLOW)) {
                  layoutManager.appendToStyle(CssConstants.OVERFLOW + "auto;");
              }
          }
      }
  
      /**
       * Height the content should take up in the group
       *
       * <p>
       * If the content size exceeds the height then a scroll bar will be shown.
       * </p>
       * <p>
       * e.g. '30%' or '55px'
       * </p>
       *
       * @return Content height of the group
       */
      @BeanTagAttribute(name="height")
      public String getHeight() {
          return height;
      }
  
      /**
       * Setter for the group height
       *
       * @param height
       */
      public void setHeight(String height) {
          this.height = height;
      }
  
      /**
       * @see org.kuali.rice.krad.uif.component.ComponentBase#copy()
       */
      @Override
      protected <T> void copyProperties(T component) {
          super.copyProperties(component);
          Scrollpane scrollpaneCopy = (Scrollpane) component;
          scrollpaneCopy.setHeight(this.getHeight());
      }
  
  }