| gvSIG desktop 1

/*

 *  $Id: PathSelectionPanel.java,v 1.1 2006/06/14 07:29:07 cesar Exp $

 *  IzPack

 *  Copyright (C) 2004 Klaus Bartz

 *

 *  File :               PathSelectionPanel.java

 *  Description :        A sub panel to handle selection of a paths.

 *  Author's email :     bartzkau@users.berlios.de

 *

 *  This program 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 2

 *  of the License, or 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 General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

 */

package com.izforge.izpack.panels;

import java.awt.Dimension;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import javax.swing.JButton;

import javax.swing.JFileChooser;

import javax.swing.JPanel;

import javax.swing.JTextField;

import com.izforge.izpack.gui.ButtonFactory;

import com.izforge.izpack.installer.InstallData;

import com.izforge.izpack.installer.IzPanel;

/**

 * This is a sub panel which contains a text field

 * and a browse button for path selection.

 * This is NOT an IzPanel, else it is made to use in an

 * IzPanel for any path selection. If the IzPanel parent

 * implements ActionListener, the ActionPerformed method

 * will be called, if PathSelectionPanel.ActionPerformed

 * was called with a source other than the browse button.

 * This can be used to perform parentFrame.navigateNext

 * in the IzPanel parent.

 * An example implementation is done in

 * com.izforge.izpack.panels.PathInputPanel.

 *

 * @author  Klaus Bartz

 *

 */

public class PathSelectionPanel extends JPanel implements ActionListener

{

  /**  The text field for the path. */

  private JTextField textField;

  /**  The 'browse' button. */

  private JButton browseButton;

  /** IzPanel parent (not the InstallerFrame). */

  private IzPanel parent;

  /**

   *  The installer internal data.

   */

  private InstallData idata;

  /**

   * The constructor.

   * Be aware, parent is the parent IzPanel, not

   * the installer frame.

   *

   * @param  parent  The parent IzPanel.

   * @param  idata   The installer internal data.

   */

  public PathSelectionPanel(IzPanel parent, InstallData idata)

  {

    super();

    this.parent = parent;

    this.idata  = idata;

    createLayout();

  }

  /**

   * Creates the layout for this sub panel.

   */

  protected void createLayout()

  {

    GridBagLayout layout = new GridBagLayout();

    setLayout(layout);

    textField = new JTextField(idata.getInstallPath(), 40);

    textField.addActionListener(this);

    parent.setInitialFocus(textField);

    GridBagConstraints gbConstraints = new GridBagConstraints();

    parent.getInstallerFrame().buildConstraints(gbConstraints, 0, 1, 

      GridBagConstraints.RELATIVE, 1, 1.0, 0.0);

    gbConstraints.fill = GridBagConstraints.HORIZONTAL;

    gbConstraints.anchor = GridBagConstraints.WEST;

    gbConstraints.insets =  new Insets(0,0,0,10);

    layout.addLayoutComponent(textField, gbConstraints);

    add(textField);

    browseButton =

      ButtonFactory.createButton(

    parent.getInstallerFrame().langpack.getString("TargetPanel.browse"),

    parent.getInstallerFrame().icons.getImageIcon("open"),

        idata.buttonsHColor);

    browseButton.addActionListener(this);

    parent.getInstallerFrame().buildConstraints(gbConstraints, 1, 1, 

      GridBagConstraints.REMAINDER, 1, 0.0, 0.0);

    gbConstraints.fill = GridBagConstraints.HORIZONTAL;

    gbConstraints.anchor = GridBagConstraints.EAST;

    gbConstraints.insets =  new Insets(0,0,0,5);

    layout.addLayoutComponent(browseButton, gbConstraints);

    add(browseButton);

  }

  // There are problems with the size if no other component needs the

  // full size. Sometimes directly, somtimes only after a back step.

  public Dimension getMinimumSize()

  {

    Dimension ss = super.getPreferredSize();

    Dimension retval = parent.getSize();

    retval.height = ss.height;

    return( retval);

  }

  /**

   *  Actions-handling method.

   *

   * @param  e  The event.

   */

  public void actionPerformed(ActionEvent e)

  {

    Object source = e.getSource();

    if (source == browseButton)

    {

      // The user wants to browse its filesystem

      // Prepares the file chooser

      JFileChooser fc = new JFileChooser();

      fc.setCurrentDirectory(new File(textField.getText()));

      fc.setMultiSelectionEnabled(false);

      fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);

      fc.addChoosableFileFilter(fc.getAcceptAllFileFilter());

      // Shows it

      if (fc.showOpenDialog(this) == JFileChooser.APPROVE_OPTION)

      {

        String path = fc.getSelectedFile().getAbsolutePath();

        textField.setText(path);

      }

    }

    else

    {

      if( parent instanceof ActionListener)

        ((ActionListener)parent).actionPerformed(e);

    }

  }

  /**

   * Returns the chosen path.

   * @return the chosen path

   */

  public String getPath()

  {

    return(textField.getText());

  }

  /**

   * Sets the contents of the text field

   * to the given path.

   * @param path the path to be set

   */

  public void setPath(String path)

  {

    textField.setText(path);

  }

  /**

   * Returns the text input field for the path. This

   * methode can be used to differ in a ActionPerformed

   * method of the parent between the browse button and

   * the text field.

   * @return the text input field for the path

   */

  public JTextField getPathInputField()

  {

    return textField;

  }

}