ComponentHelper

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## weka.gui
Class ComponentHelper

    java.lang.Object
      weka.gui.ComponentHelper

    public class ComponentHelper

extends java.lang.Object

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

Version:
  $Revision: 1.3 $
Author:
  FracPete (fracpete at waikato dot ac dot nz)

Field Summary
`static java.lang.String[]` | `IMAGES` the default directories for images

Constructor Summary
`ComponentHelper()`

Method Summary
`static java.awt.Image` | `getImage(java.lang.String filename)` returns the Image for a given filename, NULL if not successful
`static java.awt.Image` | `getImage(java.lang.String dir, java.lang.String filename)` returns the Image for a given directory and filename, NULL if not successful
`static javax.swing.ImageIcon` | `getImageIcon(java.lang.String filename)` returns the ImageIcon for a given filename, NULL if not successful
`static javax.swing.ImageIcon` | `getImageIcon(java.lang.String dir, java.lang.String filename)` returns the ImageIcon for a given filename and directory, NULL if not successful
`static java.lang.String` | `showInputBox(java.awt.Component parent, java.lang.String title, java.lang.String msg, java.lang.Object initialValue)` pops up an input dialog
`static int` | `showMessageBox(java.awt.Component parent, java.lang.String title, java.lang.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 java.lang.String[] IMAGES

  the default directories for images

Constructor Detail

### ComponentHelper

    public ComponentHelper()

Method Detail

### getImageIcon

    public static javax.swing.ImageIcon getImageIcon(java.lang.String dir,
                                                     java.lang.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 javax.swing.ImageIcon getImageIcon(java.lang.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 java.awt.Image getImage(java.lang.String dir,
                                          java.lang.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 java.awt.Image getImage(java.lang.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(java.awt.Component parent,
                                     java.lang.String title,
                                     java.lang.String msg,
                                     int buttons,
                                     int messageType)

  displays a message box with the given title, message, buttons and icon ant the dimension. 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`

### showInputBox

    public static java.lang.String showInputBox(java.awt.Component parent,
                                                java.lang.String title,
                                                java.lang.String msg,
                                                java.lang.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`

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