package org.jtheque.utils.ui;

 /*

  * This file is part of JTheque.

  *

  * JTheque is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License.

  *

  * JTheque 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 General Public License

  * along with JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 import javax.swing.Action;

 import javax.swing.Box;

 import javax.swing.JButton;

 import javax.swing.JPanel;

 import java.awt.Color;

 import java.awt.Component;

 import java.awt.GridBagConstraints;

 import java.awt.GridBagLayout;

 /**

  * A builder for a button bar.

  *

  * @author Baptiste Wicht

  */

 public final class LinedButtonBarBuilder {

     private final JPanel panel;

     private final GridBagUtils gbc;

     private final int[] column;

     /**

      * Construct a new ButtonBarBuilder.

      *

      * @param lines The number of lines.

      */

     public LinedButtonBarBuilder(int lines) {

         super();

         column = new int[lines];

         panel = new JPanel(new GridBagLayout());

         panel.setBackground(Color.white);

         gbc = new GridBagUtils();

         gbc.setDefaultInsets(2, 2, 2, 2);

         for (int i = 0; i < lines; i++) {

             panel.add(Box.createHorizontalGlue(), gbc.gbcSet(column[i], i, GridBagConstraints.HORIZONTAL, GridBagConstraints.LINE_START, 1.0, 1.0));

             column[i]++;

         }

     }

     /**

      * Add an action to the bar.

      *

      * @param action The action to add.

      * @param line   The line.

      */

     private void addAction(Action action, int line) {

         int lineIndex = line - 1;

         panel.add(new JButton(action), gbc.gbcSet(column[lineIndex], lineIndex, GridBagConstraints.HORIZONTAL, GridBagConstraints.LINE_START));

         column[lineIndex]++;

     }

     /**

      * Add actions to the bar.

      *

      * @param line    The line to add the actions in.

      * @param actions The actions to add.

      */

     public void addActions(int line, Action... actions) {

         for (Action action : actions) {

             addAction(action, line);

         }

     }

     /**

      * Return the panel.

      *

      * @return The panel.

      */

     public Component getPanel() {

         return panel;

     }

 }