/*******************************************************************************
    * Copyhacked (H) 2012-2020.
    * This program and the accompanying materials
    * are made available under no term at all, use it like
    * you want, but share and discuss about it
    * every time possible with every body.
    *
    * Contributors:
    *      ron190 at ymail dot com - initial implementation
   *******************************************************************************/
  package com.jsql.view.swing.ui;
  
  import com.jsql.view.swing.util.UiUtil;
  
  import javax.swing.*;
  import javax.swing.plaf.UIResource;
  import javax.swing.plaf.basic.BasicArrowButton;
  import javax.swing.plaf.metal.MetalTabbedPaneUI;
  import java.awt.*;
  
  /**
   * Tab UI to remove inner borders on empty tabbedpane and force header height on Linux.
   */
  public class BorderlessTabButtonUI extends MetalTabbedPaneUI {
      
      @Override
      protected JButton createScrollButton(int direction) {
          
          if (direction != SOUTH && direction != NORTH && direction != EAST && direction != WEST) {
              
              throw new IllegalArgumentException("Direction must be one of: SOUTH, NORTH, EAST or WEST");
          }
  
          return new ScrollableTabButton(direction);
      }
      
      private static class ScrollableTabButton extends BasicArrowButton implements UIResource, SwingConstants {
          
          public ScrollableTabButton(int direction) {
              
              super(
                  direction,
                  UiUtil.COLOR_DEFAULT_BACKGROUND,
                  UIManager.getColor("TabbedPane.darkShadow"),
                  new Color(122, 138, 153),
                  UIManager.getColor("TabbedPane.highlight")
              );
              
              this.setBorder(BorderFactory.createEmptyBorder());
              this.setOpaque(false);
              this.setBorderPainted(false);
          }
      }
  }