com.izforge.izpack.panels.checkedhello
Class RegistryHelper

java.lang.Object
  com.izforge.izpack.panels.checkedhello.RegistryHelper

public class RegistryHelper
extends Object

Registry helper.

Author:

Klaus Bartz, Tim Anderson

Constructor Summary

RegistryHelper(RegistryDefaultHandler handler, InstallData installData)
Constructs a RegistryHelper.

Method Summary

protected boolean	exists(int root, String key, String value) Determines whether a given value under a given key exists.
String	getInstallationPath() Returns the installation path of the application.
String	getUninstallCommand() Returns the command to uninstall the application, if it is registered.
String	getUninstallName() Returns the uninstallation name.
boolean	isRegistered() Returns whether the handled application is already registered or not.
String	updateUninstallName() Generates an unique uninstall name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RegistryHelper

public RegistryHelper(RegistryDefaultHandler handler,
                      InstallData installData)

Constructs a RegistryHelper.

Parameters:

handler - the registry handler

installData - the installation data

Method Detail

isRegistered

public boolean isRegistered()
                     throws NativeLibException

Returns whether the handled application is already registered or not. The validation will be made only on systems which contains a registry (Windows).

Returns:

true if the application is registered

Throws:

NativeLibException - for any native library error

getUninstallName

public String getUninstallName()

Returns the uninstallation name.

Returns:

the uninstallation name. May be null

getInstallationPath

public String getInstallationPath()
                           throws NativeLibException

Returns the installation path of the application.

NOTE: this uses the UninstallString registry entry

Returns:

the installation path, or null if the application hasn't been installed or the path cannot be determined

Throws:

NativeLibException - for any native library error

IllegalStateException - if the uninstallation name of the application is null

getUninstallCommand

public String getUninstallCommand()
                           throws NativeLibException

Returns the command to uninstall the application, if it is registered.

Returns:

the command, or null if the application isn't registered

Throws:

NativeLibException - for any native library error

IllegalStateException - if the uninstallation name of the application is null

updateUninstallName

public String updateUninstallName()
                           throws NativeLibException

Generates an unique uninstall name.

Returns:

the unique uninstall name, or null if the registry isn't supported on the platform

Throws:

NativeLibException - for any native library error

exists

protected boolean exists(int root,
                         String key,
                         String value)
                  throws NativeLibException

Determines whether a given value under a given key exists.

NOTE: this operation has the side effect that the registry root changes.

Parameters:

root - the root of the registry access.

key - the key name

value - the value name

Returns:

true it exists, otherwise false

Throws:

NativeLibException