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Class framework.awt.FileField

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----framework.awt.FileField

public class FileField

extends Panel

If an application wants to be notified when the filename in the FileField changes (either by the user pressing return in the TextField or by getting a new selection from the FileDialog), it should implement the ActionListener interface and register the new listener to receive events from the FileField, by calling the addActionListener() method. The new filename is available to the application through the action event's command.

The FileField can also be queried for the current filename using method getFilename().

Version:

$Revision: 1.5 $

See Also:

ActionListener, getActionCommand, addActionListener, getFilename, TextField, FileDialog

FileField(Frame, String)

Constructs a new FileField.

addActionListener(ActionListener)

Adds the specified action listener to receive action events from this FileField.

getFilename()

Get the filename that is represented by this FileField.

processActionEvent(ActionEvent)

Processes action events occurring on this TextField by dispatching them to any registered ActionListener objects.

processEvent(AWTEvent)

Processes events on this FileField.

removeActionListener(ActionListener)

Removes the specified action listener so that it no longer receives action events from this FileField.

setFilename(String)

Set the filename represented by this FileField to be the specified filename.

 public FileField(Frame parent,
                  String initialFilename)

Constructs a new FileField.

Parameters:

parent - the owner of the FileField.

initialFilename - a String to display in the FileField. The preferred size of the FileField is based on the length of this String.

 public void addActionListener(ActionListener l)

Adds the specified action listener to receive action events from this FileField. Action events occur when the user selects a new filename.

Parameters:

l - the action listener

See Also:

ActionListener, removeActionListener

 public void removeActionListener(ActionListener l)

Removes the specified action listener so that it no longer receives action events from this FileField.

Parameters:

l - the action listener

See Also:

ActionListener, addActionListener

 public String getFilename()

Get the filename that is represented by this FileField. The returned name is the complete text as entered in the TextField or selected by the FileDialog. It can contain an optional directory name.

See Also:

setFilename

 public void setFilename(String filename)

Set the filename represented by this FileField to be the specified filename.

Parameters:

filename - the new filename.

See Also:

getFilename

 protected void processEvent(AWTEvent e)

Processes events on this FileField. If the event is an ActionEvent, it invokes the processActionEvent method, else it invokes its superclass's processEvent.

Parameters:

e - the event.

Overrides:

processEvent in class Container

 protected void processActionEvent(ActionEvent e)

Processes action events occurring on this TextField by dispatching them to any registered ActionListener objects. NOTE: This method will not be called unless action events are enabled for this component; this happens when one of the following occurs: a) An ActionListener object is registered via addActionListener() b) Action events are enabled via enableEvents()

Parameters:

e - the action event

See Also:

enableEvents

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