Package weka.gui

Class ComponentHelper

java.lang.Object

weka.gui.ComponentHelper

public class ComponentHelper
extends Object

A helper class for some common tasks with Dialogs, Icons, etc.

Version:

$Revision$

Author:

FracPete (fracpete at waikato dot ac dot nz)

Field Summary

Fields

Modifier and Type	Field	Description
static String[]	IMAGES	the default directories for images

Constructor Summary

Constructors

Constructor	Description
ComponentHelper()

Method Summary

Modifier and Type	Method	Description
static Image	getImage(String filename)	returns the Image for a given filename, NULL if not successful
static Image	getImage(String dir, String filename)	returns the Image for a given directory and filename, NULL if not successful
static ImageIcon	getImageIcon(String filename)	returns the ImageIcon for a given filename, NULL if not successful
static ImageIcon	getImageIcon(String dir, String filename)	returns the ImageIcon for a given filename and directory, NULL if not successful
static void	showInformationBox(Component parent, String title, String msg, int messageType)	displays a message box with the given title, message, buttons and icon ant the dimension.
static String	showInputBox(Component parent, String title, String msg, Object initialValue)	pops up an input dialog
static int	showMessageBox(Component parent, String title, String msg, int buttons, int messageType)	displays a message box with the given title, message, buttons and icon ant the dimension.

Methods inherited from class java.lang.Object

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

Field Detail

IMAGES

public static final String[] IMAGES

the default directories for images

Constructor Detail

ComponentHelper

public ComponentHelper()

Method Detail

getImageIcon

public static ImageIcon getImageIcon(String dir,
                                     String filename)

returns the ImageIcon for a given filename and directory, NULL if not successful

Parameters:

dir - the directory to look in for the file

filename - the file to retrieve

Returns:

the imageicon if found, otherwise null

getImageIcon

public static ImageIcon getImageIcon(String filename)

returns the ImageIcon for a given filename, NULL if not successful

Parameters:

filename - the file to retrieve

Returns:

the imageicon if found, otherwise null

getImage

public static Image getImage(String dir,
                             String filename)

returns the Image for a given directory and filename, NULL if not successful

Parameters:

dir - the directory to look in for the file

filename - the file to retrieve

Returns:

the image if found, otherwise null

getImage

public static Image getImage(String filename)

returns the Image for a given filename, NULL if not successful

Parameters:

filename - the file to retrieve

Returns:

the image if found, otherwise null

showMessageBox

public static int showMessageBox(Component parent,
                                 String title,
                                 String msg,
                                 int buttons,
                                 int messageType)

displays a message box with the given title, message, buttons and icon ant the dimension. This method uses JOptionPane.showConfirmDialog(). it returns the pressed button.

Parameters:

parent - the parent component

title - the title of the message box

msg - the text to display

buttons - the captions of the buttons to display

messageType - the type of message like defined in JOptionPane (the icon is determined on this basis)

Returns:

the button that was pressed

See Also:

JOptionPane

showInformationBox

public static void showInformationBox(Component parent,
                                      String title,
                                      String msg,
                                      int messageType)

displays a message box with the given title, message, buttons and icon ant the dimension. This method uses JOptionPane.showMessageDialog().

Parameters:

parent - the parent component

title - the title of the message box

msg - the text to display

messageType - the type of message like defined in JOptionPane (the icon is determined on this basis)

See Also:

JOptionPane

showInputBox

public static String showInputBox(Component parent,
                                  String title,
                                  String msg,
                                  Object initialValue)

pops up an input dialog

Parameters:

parent - the parent of this dialog, can be null

title - the title to display, can be null

msg - the message to display

initialValue - the initial value to display as input

Returns:

the entered value, or if cancelled null