com.install4j.api
Class Util

java.lang.Object
  com.install4j.api.Util

public class Util
extends java.lang.Object

The class contains various utility functions to be used by custom actions and custom screens.

Author:

ej-technologies GmbH

Constructor Summary

Util()

Method Summary

static void	fatalError(java.lang.Throwable t) This method can be invoked if you encounter a non-recoverable and non-expected error in your custom code.
static java.lang.String	getInstallerLanguage() Return the language of the installer.
static java.awt.Window	getParentWindow() Get the window of the installer.
static java.lang.String	getStandardApplicationsDirectory() Returns the standard directory for installing applications.
static boolean	isHpux() Returns whether the platform is HP UX.
static boolean	isLinux() Returns whether the platform is Linux.
static boolean	isMacOS() Returns whether the platform is Mac OS X.
static boolean	isSolaris() Returns whether the platform is Solaris.
static boolean	isWindows() Returns whether the platform is Windows.
static boolean	isWindows9X() Returns whether the platform is Windows 9X (95, 98, ME).
static boolean	isWindowsNT() Returns whether the platform is Windows NT (not Windows 2000 and XP).
static void	showMessage(java.lang.String message, int messageType) Show a message dialog.
static int	showOptionDialog(java.lang.String message, java.lang.String[] options, int messageType) Show an options dialog.
static void	showUrl(java.net.URL url) Show a URL in the default browser.

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Method Detail

getInstallerLanguage

public static java.lang.String getInstallerLanguage()

Return the language of the installer. This corresponds to the setting in the media file wizard.

Returns:

the language ISO code (like "en" or "de")

isSolaris

public static boolean isSolaris()

Returns whether the platform is Solaris.

Returns:

the result

isLinux

public static boolean isLinux()

Returns whether the platform is Linux.

Returns:

the result

isWindows

public static boolean isWindows()

Returns whether the platform is Windows.

Returns:

the result

isWindows9X

public static boolean isWindows9X()

Returns whether the platform is Windows 9X (95, 98, ME).

Returns:

the result

isWindowsNT

public static boolean isWindowsNT()

Returns whether the platform is Windows NT (not Windows 2000 and XP).

Returns:

the result

isMacOS

public static boolean isMacOS()

Returns whether the platform is Mac OS X.

Returns:

the result

isHpux

public static boolean isHpux()

Returns whether the platform is HP UX.

Returns:

the result

getStandardApplicationsDirectory

public static java.lang.String getStandardApplicationsDirectory()

Returns the standard directory for installing applications.

Returns:

the directory

showUrl

public static void showUrl(java.net.URL url)

Show a URL in the default browser. If no default browser can be determined for the operating system, the user is asked to locate the executable of the internet browser. This executable is cached so that subsequent invocations of this method do not bring up this questions again.

For quiet installers, this method does nothing.

Parameters:

url - the URL to be shown in the browser.

showMessage

public static void showMessage(java.lang.String message,
                               int messageType)

Show a message dialog. This message dialog is a JOptionPane, the parameters are equivalent to those of the standard Java class.

Parameters:

message - the message

messageType - the message type (see JOptionPane)

See Also:

JOptionPane

showOptionDialog

public static int showOptionDialog(java.lang.String message,
                                   java.lang.String[] options,
                                   int messageType)

Show an options dialog. This option dialog is a JOptionPane, the parameters are equivalent to those of the standard Java class

Parameters:

message - the message

options - the options

messageType - the message type (see JOptionPane)

Returns:

the index of the selected option or -1 if the installer is silent

See Also:

JOptionPane

fatalError

public static void fatalError(java.lang.Throwable t)

This method can be invoked if you encounter a non-recoverable and non-expected error in your custom code. The exception and all system properties will be printed to a log file and the user will be informed with a crash dialog. The installer will then quit.

Parameters:

t - the exception that ocurred

getParentWindow

public static java.awt.Window getParentWindow()

Get the window of the installer.

Returns:

the window or null if the installer is silent