| gvSIG desktop 1

/*

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

 *  IzPack

 *  Copyright (C) 2001-2004 Julien Ponge

 *

 *  File :               XInfoPanel.java

 *  Description :        A panel to show some adaptative textual information.

 *  Author's email :     julien@izforge.com

 *  Author's Website :   http://www.izforge.com

 *

 *  Portions are Copyright (c) 2001 Johannes Lehtinen

 *  johannes.lehtinen@iki.fi

 *  http://www.iki.fi/jle/

 *

 *  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.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;

import javax.swing.JLabel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import com.izforge.izpack.gui.LabelFactory;

import com.izforge.izpack.installer.InstallData;

import com.izforge.izpack.installer.InstallerFrame;

import com.izforge.izpack.installer.IzPanel;

import com.izforge.izpack.installer.ResourceManager;

import com.izforge.izpack.installer.VariableSubstitutor;

/**

 *  The XInfo panel class - shows some adaptative text (ie by parsing for some

 *  variables.

 *

 * @author     Julien Ponge

 */

public class XInfoPanel extends IzPanel

{

  /**  The layout. */

  private GridBagLayout layout;

  /**  The layout constraints. */

  private GridBagConstraints gbConstraints;

  /**  The info label. */

  private JLabel infoLabel;

  /**  The text area. */

  private JTextArea textArea;

  /**  The info to display. */

  private String info;

  /**

   *  The constructor.

   *

   * @param  parent  The parent window.

   * @param  idata   The installation data.

   */

  public XInfoPanel(InstallerFrame parent, InstallData idata)

  {

    super(parent, idata);

    // We initialize our layout

    layout = new GridBagLayout();

    gbConstraints = new GridBagConstraints();

    setLayout(layout);

    // We add the components

    infoLabel =

      LabelFactory.create(

        parent.langpack.getString("InfoPanel.info"),

        parent.icons.getImageIcon("edit"),

        JLabel.TRAILING);

    parent.buildConstraints(gbConstraints, 0, 0, 1, 1, 1.0, 0.0);

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

    gbConstraints.fill = GridBagConstraints.BOTH;

    gbConstraints.anchor = GridBagConstraints.SOUTHWEST;

    layout.addLayoutComponent(infoLabel, gbConstraints);

    add(infoLabel);

    textArea = new JTextArea();

    textArea.setEditable(false);

    JScrollPane scroller = new JScrollPane(textArea);

    parent.buildConstraints(gbConstraints, 0, 1, 1, 1, 1.0, 0.9);

    gbConstraints.anchor = GridBagConstraints.CENTER;

    layout.addLayoutComponent(scroller, gbConstraints);

    add(scroller);

  }

  /**  Loads the info text.  */

  private void loadInfo()

  {

    try

    {

      // We read it

      info = ResourceManager.getInstance().getTextResource("XInfoPanel.info");

    } catch (Exception err)

    {

      info = "Error : could not load the info text !";

    }

  }

  /**  Parses the text for special variables.  */

  private void parseText()

  {

    try

    {

      // Initialize the variable substitutor

      VariableSubstitutor vs = new VariableSubstitutor(idata.getVariables());

      // Parses the info text

      info = vs.substitute(info, null);

    } catch (Exception err)

    {

      err.printStackTrace();

    }

  }

  /**  Called when the panel becomes active.  */

  public void panelActivate()

  {

    // Text handling

    loadInfo();

    parseText();

    // UI handling

    textArea.setText(info);

    textArea.setCaretPosition(0);

  }

  /**

   *  Indicates wether the panel has been validated or not.

   *

   * @return    Always true.

   */

  public boolean isValidated()

  {

    return true;

  }

}