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   *   Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache 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
   *
   *    https://www.apache.org/licenses/LICENSE-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.apache.cayenne.modeler.util;
  
  import javax.swing.*;
  import java.awt.*;
  
  /**
   * @since 1.1
   */
  public class UIUtil {
  
      /**
       * Scrolls table within JViewport to the selected row if there is one.
       */
      public static void scrollToSelectedRow(JTable table) {
          int row = table.getSelectedRow();
          if (row >= 0) {
              scroll(table, row, 0);
          }
      }
  
      /**
      * Scrolls view if it is located in a JViewport, so that the specified cell
      * is displayed in the center.
      */
      public static void scroll(JTable table, int rowIndex, int vColIndex) {
          if (!(table.getParent() instanceof JViewport)) {
              return;
          }
  
          JViewport viewport = (JViewport) table.getParent();
          Rectangle rect = table.getCellRect(rowIndex, vColIndex, true);
          Rectangle viewRect = viewport.getViewRect();
  
          if (viewRect.intersects(rect)) {
              return;
          }
  
          // Translate the cell location so that it is relative
          // to the view, assuming the northwest corner of the
          // view is (0,0).
          rect.setLocation(rect.x - viewRect.x, rect.y - viewRect.y);
  
          // Calculate location of rect if it were at the center of view
          int centerX = (viewRect.width - rect.width) / 2;
          int centerY = (viewRect.height - rect.height) / 2;
  
          // Fake the location of the cell so that scrollRectToVisible
          // will move the cell to the center
          if (rect.x < centerX) {
              centerX = -centerX;
          }
          if (rect.y < centerY) {
              centerY = -centerY;
          }
          rect.translate(centerX, centerY);
  
          // Scroll the area into view.
          viewport.scrollRectToVisible(rect);
      }
      
      /**
       * "Injects" windows's content to another window
       */
      public static void dock(Window window, Window dockTo) {
          window.setVisible(false);
          
          ((RootPaneContainer) dockTo).getContentPane()
              .add(((RootPaneContainer) window).getContentPane(), BorderLayout.SOUTH);
          
          dockTo.setVisible(true);
      }
      
      /**
       * "Injects" windows's content to parent window
       */
      public static void dock(Window window) {
          dock(window, window.getOwner());
      }
  }
  