content: /*
   * Copyright 2019 FormDev Software GmbH
   *
   * Licensed 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
   *
   *     http://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 themeengine.include.com.formdev.flatlaf.ui;
  
  import java.awt.Component;
  import java.awt.Graphics;
  import javax.swing.JTable;
  import javax.swing.SwingUtilities;
  import javax.swing.UIManager;
  
  /**
   * Cell border for {@link javax.swing.table.DefaultTableCellRenderer}
   * (used by {@link javax.swing.JTable}).
   * <p>
   * Uses separate cell margins from UI defaults to allow easy customizing.
   *
   * @author Karl Tauber
   */
  public class FlatTableCellBorder
  	extends FlatLineBorder
  {
  	final boolean showCellFocusIndicator = UIManager.getBoolean( "Table.showCellFocusIndicator" );
  
  	protected FlatTableCellBorder() {
  		super( UIManager.getInsets( "Table.cellMargins" ), UIManager.getColor( "Table.cellFocusColor" ) );
  	}
  
  	//---- class Default ------------------------------------------------------
  
  	/**
  	 * Border for unselected cell that uses margins, but does not paint focus indicator border.
  	 */
  	public static class Default
  		extends FlatTableCellBorder
  	{
  		@Override
  		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
  			// do not paint focus indicator border
  		}
  	}
  
  	//---- class Focused ------------------------------------------------------
  
  	/**
  	 * Border for focused unselected cell that uses margins and paints focus indicator border.
  	 */
  	public static class Focused
  		extends FlatTableCellBorder
  	{
  	}
  
  	//---- class Selected -----------------------------------------------------
  
  	/**
  	 * Border for selected cell that uses margins and paints focus indicator border
  	 * if enabled (Table.showCellFocusIndicator=true) or at least one selected cell is editable.
  	 */
  	public static class Selected
  		extends FlatTableCellBorder
  	{
  		@Override
  		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
  			if( !showCellFocusIndicator ) {
  				JTable table = (JTable) SwingUtilities.getAncestorOfClass( JTable.class, c );
  				if( table != null && !isSelectionEditable( table ) )
  					return;
  			}
  
  			super.paintBorder( c, g, x, y, width, height );
  		}
  
  		/**
  		 * Checks whether at least one selected cell is editable.
  		 */
  		protected boolean isSelectionEditable( JTable table ) {
  			if( table.getRowSelectionAllowed() ) {
  				int columnCount = table.getColumnCount();
  				int[] selectedRows = table.getSelectedRows();
  				for( int selectedRow : selectedRows ) {
  					for( int column = 0; column < columnCount; column++ ) {
  						if( table.isCellEditable( selectedRow, column ) )
  							return true;
  					}
  				}
  			}
  
  			if( table.getColumnSelectionAllowed() ) {
  				int rowCount = table.getRowCount();
  				int[] selectedColumns = table.getSelectedColumns();
  				for( int selectedColumn : selectedColumns ) {
  					for( int row = 0; row < rowCount; row++ ) {
  						if( table.isCellEditable( row, selectedColumn ) )
  							return true;
  					}
  				}
  			}
  
  			return false;
  		}
  	}
  }
  