com.izforge.izpack.panels.checkedhello.CheckedHelloPanel Maven / Gradle / Ivy
/*
* $Id$
* IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/ http://izpack.codehaus.org/
*
* Copyright 2005 Klaus Bartz
*
* 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 com.izforge.izpack.panels.checkedhello;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.izforge.izpack.api.data.Panel;
import com.izforge.izpack.api.exception.NativeLibException;
import com.izforge.izpack.api.handler.AbstractUIHandler;
import com.izforge.izpack.api.resource.Resources;
import com.izforge.izpack.core.os.RegistryDefaultHandler;
import com.izforge.izpack.gui.log.Log;
import com.izforge.izpack.installer.data.GUIInstallData;
import com.izforge.izpack.installer.gui.InstallerFrame;
import com.izforge.izpack.panels.hello.HelloPanel;
/**
* An extended hello panel class which detects whether the product was already installed or not.
* This class should be only used if the RegistryInstallerListener will be also used. Current the
* check will be only performed on Windows operating system. This class can be used also as example
* how to use the registry stuff to get informations from the current system.
*
* @author Klaus Bartz
*/
public class CheckedHelloPanel extends HelloPanel
{
/**
* Required (serializable)
*/
private static final long serialVersionUID = 1737042770727953387L;
/**
* Flag to break installation or not.
*/
protected boolean abortInstallation;
/**
* The registry helper.
*/
private transient final RegistryHelper registryHelper;
/**
* The logger.
*/
private static Logger logger = Logger.getLogger(CheckedHelloPanel.class.getName());
/**
* The constructor.
*
* @param panel the panel meta-data
* @param parent the parent frame
* @param installData the installation data
* @param resources the resources
* @param handler the registry handler instance
* @param log the log
* @throws Exception if it cannot be determined if the application is registered
*/
public CheckedHelloPanel(Panel panel, InstallerFrame parent, GUIInstallData installData, Resources resources,
RegistryDefaultHandler handler, Log log) throws Exception
{
super(panel, parent, installData, resources, log);
registryHelper = new RegistryHelper(handler, installData);
abortInstallation = isRegistered();
}
/**
* This method should only be called if this product was already installed. It resolves the
* install path of the first already installed product and asks the user whether to install
* twice or not.
*
* @return whether a multiple Install should be performed or not.
* @throws NativeLibException for any native library error
*/
protected boolean multipleInstall() throws NativeLibException
{
String path = registryHelper.getInstallationPath();
if (path == null)
{
path = "";
}
String noLuck = getString("CheckedHelloPanel.productAlreadyExist0") + path + " . "
+ getString("CheckedHelloPanel.productAlreadyExist1");
return (askQuestion(getString("installer.error"), noLuck,
AbstractUIHandler.CHOICES_YES_NO) == AbstractUIHandler.ANSWER_YES);
}
/**
* Returns whether the handled application is already registered or not. The validation will be
* made only on systems which contains a registry (Windows).
*
* @return true if the application is registered
* @throws Exception if it cannot be determined if the application is registered
*/
protected boolean isRegistered() throws Exception
{
return registryHelper.isRegistered();
}
/**
* Indicates wether the panel has been validated or not.
*
* @return true if the internal abort flag is not set, else false
*/
public boolean isValidated()
{
return (!abortInstallation);
}
/*
* (non-Javadoc)
*
* @see com.izforge.izpack.installer.IzPanel#panelActivate()
*/
public void panelActivate()
{
if (abortInstallation)
{
parent.lockNextButton();
try
{
if (multipleInstall())
{
setUniqueUninstallKey();
abortInstallation = false;
parent.unlockNextButton();
}
else
{
installData.getInfo().setUninstallerPath(null);
installData.getInfo().setUninstallerName(null);
installData.getInfo().setUninstallerCondition("uninstaller.nowrite");
}
}
catch (Exception exception)
{
logger.log(Level.WARNING, exception.getMessage(), exception);
}
}
installData.setVariable("UNINSTALL_NAME", registryHelper.getUninstallName());
}
/**
* Generates an unique uninstall key, displaying it to the user.
*
* @throws NativeLibException for any native library error
*/
private void setUniqueUninstallKey() throws NativeLibException
{
String newUninstallName = registryHelper.updateUninstallName();
emitNotification(getString("CheckedHelloPanel.infoOverUninstallKey")
+ newUninstallName);
}
}