package fr.ifremer.quadrige3.ui.swing.table;
   
   /*-
    * #%L
    * Quadrige3 Core :: Quadrige3 UI Common
    * $Id:$
    * $HeadURL:$
    * %%
    * Copyright (C) 2017 Ifremer
   * %%
   * 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 Affero General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   * #L%
   */
  
  import org.jdesktop.swingx.JXTableHeader;
  
  import javax.swing.BorderFactory;
  import javax.swing.JTextPane;
  import javax.swing.SwingConstants;
  import javax.swing.UIManager;
  import javax.swing.table.DefaultTableCellRenderer;
  import javax.swing.table.TableCellRenderer;
  import javax.swing.table.TableColumn;
  import javax.swing.table.TableColumnModel;
  import javax.swing.text.html.HTMLEditorKit;
  import java.awt.Color;
  import java.awt.Dimension;
  
  /**
   * An implementation of JXTableHeader that add some enhancements:
   * <ul><li>allow multiline header text (html render) and auto resize</li>
   * <li>force header text on top</li></ul>
   * Created by Ludovic on 13/05/2015.
   */
  public class SwingTableHeader extends JXTableHeader {
  
      /**
       * <p>Constructor for SwingTableHeader.</p>
       *
       * @param columnModel a {@link TableColumnModel} object.
       */
      public SwingTableHeader(TableColumnModel columnModel) {
          super(columnModel);
      }
  
      @Override
      public SwingTableColumnModel getColumnModel() {
          return (SwingTableColumnModel) super.getColumnModel();
      }
  
      @Override
      public void setDraggedColumn(TableColumn column) {
          // prevent a fixed column to be dragged
          if (getColumnModel().isFixedColumn(column)) {
              column = null;
          }
          super.setDraggedColumn(column);
      }
  
      /**
       * {@inheritDoc}
       *
       * the preferred size (specially the height) is calculated by render the header value in a JTextPane
       * in order to fit the content in the column width
       */
      @Override
      protected Dimension getPreferredSize(Dimension pref) {
          int height = pref.height;
          for (int i = 0; i < getColumnModel().getColumnCount(); i++) {
  
              // calculate text height
              TableColumn column = getColumnModel().getColumn(i);
              JTextPane pane = new JTextPane();
              pane.setBorder(BorderFactory.createEmptyBorder(4,5,4,5));
              pane.setEditorKit(new HTMLEditorKit());
              pane.setSize(new Dimension(column.getWidth(), 1000));
              pane.setOpaque(true);
              pane.setFont(table.getFont());
              pane.setText((String) column.getHeaderValue());
              height = Math.max(height, pane.getPreferredSize().height);
          }
          pref.height = height;
          return pref;
      }
  
      /** {@inheritDoc} */
      @Override
      public TableCellRenderer getDefaultRenderer() {
         DefaultTableCellRenderer defaultRenderer = (DefaultTableCellRenderer) super.getDefaultRenderer();
         defaultRenderer.setVerticalAlignment(SwingConstants.TOP);
         defaultRenderer.setHorizontalAlignment(SwingConstants.CENTER);
         return defaultRenderer;
     }
 
     /** {@inheritDoc} */
     @Override
     public Color getForeground() {
 
         Color color = UIManager.getColor("thematicLabelColor");
         return color != null ? color : super.getForeground();
     }
 }