org.pf.swing
Class FocusEnforcer

java.lang.Object
  java.lang.Thread
      org.pf.swing.FocusEnforcer

All Implemented Interfaces:

java.lang.Runnable

public class FocusEnforcer
extends java.lang.Thread

This subclass of Thread can be used to set the focus of a window to a specific component. The thread is running until the component has the focus. This is particularly useful with modal dialogs (i.e. JDialog) where it is not possible in another way to set the focus to a component other than the first in the dialog.

Version:

1.0

Author:

M.Duchrow

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

FocusEnforcer(javax.swing.JComponent focusComponent)
Initialize the new instance the component to put the focus on.

FocusEnforcer(javax.swing.JComponent focusComponent, java.lang.String name)
Initialize the new instance the component to put the focus on.

Method Summary

static void	enforceFocusOn(javax.swing.JComponent focusComponent) Starts a thread to put the focus on the given component.
void	run() Actually execute the thread's purpose and set the focus on the desired component.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

FocusEnforcer

public FocusEnforcer(javax.swing.JComponent focusComponent)

Initialize the new instance the component to put the focus on.

Parameters:

focusComponent - The component that should get the focus.

FocusEnforcer

public FocusEnforcer(javax.swing.JComponent focusComponent,
                     java.lang.String name)

Initialize the new instance the component to put the focus on.

Parameters:

focusComponent - The component that should get the focus.

name - The name of the thread

Method Detail

enforceFocusOn

public static void enforceFocusOn(javax.swing.JComponent focusComponent)

Starts a thread to put the focus on the given component. The thread runs until the given component has gained the focus.

Parameters:

focusComponent - The component that should get the focus.

run

public void run()

Actually execute the thread's purpose and set the focus on the desired component. If it isn't possible for any reason then this method gives up after 5 seconds.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread