| gvSIG desktop 1

/*

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

 *  IzPack

 *  Copyright (C) 2004 Klaus Bartz

 *

 *  File :               AntActionInstallerListener.java

 *  Description :        Uninstaller listener for ant custom actions.

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

 *  Website :            http://www.izforge.com

 * 

 *

 *  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.event;

import java.io.File;

import java.io.InputStream;

import java.io.ObjectInputStream;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import com.izforge.izpack.util.AbstractUIProgressHandler;

import com.izforge.izpack.util.IoHelper;

/**

 * Uninstaller listener for performing ANT actions at uninstall time.

 * The definition of what should be done here will be made in a 

 * specification file that is referenced by the resource

 * id "AntActionsSpec.xml". There should be an entry in

 * the install.xml file in the sub ELEMENT "res" of 

 * ELEMENT "resources" that references it. The specification

 * of the xml file is done in the DTD antaction.dtd.

 * The xml file may contain an ELEMENT "uninstall_target" that 

 * should be performed for uninstalling purposes.

 * 

 * @author     Klaus Bartz

 */

public class AntActionUninstallerListener extends SimpleUninstallerListener

{

  /** Ant actions to be performed after deletion */

  private List antActions = null;

  /**

   * Default constructor

   */

  public AntActionUninstallerListener()

  {

    super();

    // TODO Auto-generated constructor stub

  }

  /* (non-Javadoc)

   * @see com.izforge.izpack.uninstaller.UninstallerListener#beforeDeletion(java.util.List, com.izforge.izpack.util.AbstractUIProgressHandler)

   */

  public void beforeDeletion(List files, AbstractUIProgressHandler handler)

    throws Exception

  {

    // Load the defined actions.

    InputStream in = getClass().getResourceAsStream("/antActions");

    if( in == null )

    { // No actions, nothing todo.

      return;

    }

    ObjectInputStream objIn = new ObjectInputStream(in);

    // The actions are stored at installation time as list of AntAction objects.

    // See AntActionInstallerListener.afterPacks.

    List allActions = (List)objIn.readObject();

    objIn.close();

    in.close();

    ArrayList befDel =  new ArrayList();

    antActions =  new ArrayList();

    Iterator iter = allActions.iterator();

    // There are two possible orders; before and after deletion.

    // Now we assign the actions to two different lists, the

    // local "before" list which we perform after the scan and

    // the class member "antActions" which should contain the

    // "afterdeletion" actions. Additionally we should save needed

    // files like the properties file for this order because if they're 

    // part of the pack the'll be lost after the deletion has been performed.

    while( iter.hasNext())

    {

      AntAction action = (AntAction) iter.next();

      // 

      if( action.getUninstallOrder().equals(ActionBase.BEFOREDELETION))

        befDel.add(action);

      else

      {// We need the build and the properties file(s) outside the install dir.

        File tmpFile = IoHelper.copyToTempFile(action.getBuildFile(),  ".xml" );

        action.setBuildFile(tmpFile.getCanonicalPath());

        List props = action.getPropertyFiles();

        if( props != null )

        {

          Iterator iter2 = props.iterator();

          ArrayList newProps = new ArrayList();

          while( iter2.hasNext())

          {

            String propName = (String) iter2.next();

            File propFile = IoHelper.copyToTempFile(propName,  ".properties" );

            newProps.add(propFile.getCanonicalPath());

          }

          action.setPropertyFiles(newProps);

        }

        antActions.add(action);

      }

    }

    // Perform the actions with the order "beforedeletion".

    if( befDel.size() > 0)

    {

      for (int i = 0; i < befDel.size(); i++)

      {

        AntAction act = (AntAction)befDel.get(i);

        act.performUninstallAction();

      }

    }

  }

  /* (non-Javadoc)

   * @see com.izforge.izpack.uninstaller.UninstallerListener#afterDeletion(java.util.List, com.izforge.izpack.util.AbstractUIProgressHandler)

   */

  public void afterDeletion(List files, AbstractUIProgressHandler handler)

    throws Exception

  {

    if( antActions != null && antActions.size() > 0 )

    { // There are actions of the order "afterdeletion".

      for (int i = 0; i < antActions.size(); i++)

      {

        AntAction act = (AntAction)antActions.get(i);

        act.performUninstallAction();

      }

    }

  }

}