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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
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   *  specific language governing permissions and limitations
   *  under the License.
   ****************************************************************/
  
  
  package org.apache.cayenne.modeler.util;
  
  import javax.swing.JCheckBox;
  import javax.swing.JTable;
  import javax.swing.UIManager;
  import javax.swing.table.JTableHeader;
  import javax.swing.table.TableCellRenderer;
  import java.awt.Component;
  import java.awt.event.MouseEvent;
  import java.awt.event.MouseListener;
  
  
  /**
   *
   * @since 4.2
   */
  public class CheckBoxHeader extends JCheckBox implements TableCellRenderer, MouseListener  {
          protected int column;
          protected boolean mousePressed = false;
          private final CheckBoxHeader rendererComponent;
  
          public CheckBoxHeader() {
              this.rendererComponent = this;
          }
  
          public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
              this.column = column;
              if (table != null) {
                  JTableHeader header = table.getTableHeader();
                  if (header != null) {
                      header.addMouseListener(rendererComponent);
                  }
              }
              rendererComponent.setBackground(UIManager.getColor("Table.selectionBackground"));
              setBorder(UIManager.getBorder("CheckBoxHeader.border"));
              return rendererComponent;
          }
  
          public void mouseClicked(MouseEvent e) {
              if (mousePressed) {
                  mousePressed=false;
                  JTableHeader header = (JTableHeader) (e.getSource());
                  int columnAtPoint = header.columnAtPoint(e.getPoint());
                  if (columnAtPoint == column) {
                      doClick();
                  }
              }
          }
  
          public void mousePressed(MouseEvent e) {
              mousePressed = true;
          }
          public void mouseReleased(MouseEvent e) {
          }
          public void mouseEntered(MouseEvent e) {
          }
          public void mouseExited(MouseEvent e) {
          }
  
      }
  
  
  