Restricting the Focus Cycle : Focus « Swing Event « Java Tutorial

Java Tutorial

1.	Language
2.	Data Type
3.	Operators
4.	Statement Control
5.	Class Definition
6.	Development
7.	Reflection
8.	Regular Expressions
9.	Collections
10.	Thread
11.	File
12.	Generics
13.	I18N
14.	Swing
15.	Swing Event
16.	2D Graphics
17.	SWT
18.	SWT 2D Graphics
19.	Network
20.	Database
21.	Hibernate
22.	JPA
23.	JSP
24.	JSTL
25.	Servlet
26.	Web Services SOA
27.	EJB3
28.	Spring
29.	PDF
30.	Email
31.	J2ME
32.	J2EE Application
33.	XML
34.	Design Pattern
35.	Log
36.	Security
37.	Apache Common
38.	Ant
39.	JUnit

Java

Java Source Code / Java Documentation

Illustrator Tutorials

GIMP Tutorials

C# / C Sharp

C# / CSharp Tutorial

C# / CSharp Open Source

SQL Server / T-SQL Tutorial

Oracle PL / SQL

Oracle PL/SQL Tutorial

Flash / Flex / ActionScript

VBA / Excel / Access / Word

XML

XML Tutorial

Microsoft Office PowerPoint 2007 Tutorial

Microsoft Office Excel 2007 Tutorial

Microsoft Office Word 2007 Tutorial

Java Tutorial » Swing Event » Focus

15. 15. 5. Restricting the Focus Cycle


import java.awt.GridLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class FocusCycleSample {

  public static void main(String args[]) {

    JFrame frame = new JFrame("Focus Cycle Sample");

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.setLayout(new GridLayout(3,3));

    for (int i = 0; i < 3; i++) {

      JButton button = new JButton("" + i);

      frame.add(button);

    }

    JPanel panel = new JPanel();

    panel.setFocusCycleRoot(true);

    panel.setFocusTraversalPolicyProvider(true);

    panel.setLayout(new GridLayout(1, 3));

    for (int i = 0; i < 3; i++) {

      JButton button = new JButton("" + (i + 3));

      panel.add(button);

    }

    frame.add(panel);

    for (int i = 0; i < 3; i++) {

      JButton button = new JButton("" + (i + 6));

      frame.add(button);

    }

    frame.setSize(300, 200);

    frame.setVisible(true);

  }

}

15. 15. Focus
	15. 15. 1.	No Focus Button
	15. 15. 2.	Focus auto-setting
	15. 15. 3.	Focus Traversal: requestFocusInWindow
	15. 15. 4.	Moving focus to the next component: focusNextComponent()
	15. 15. 5.	Restricting the Focus Cycle
	15. 15. 6.	Request Focus inside a window
	15. 15. 7.	Predefined Focus Traversal Policies
	15. 15. 8.	Reversing Focus Traversal
	15. 15. 9.	KeyboardFocusManager
	15. 15. 10.	Use KeyboardFocusManager
	15. 15. 11.	Use FocusTraversalPolicy
	15. 15. 12.	Finding the Next Focusable Component
	15. 15. 13.	Find the previous focusable component
	15. 15. 14.	Determining If a Focus Lost Is Temporary or Permanent
	15. 15. 15.	Null is returned if none of the components in this application has the focus
	15. 15. 16.	Null is returned if none of the windows in this application has the focus
	15. 15. 17.	Changes the focus traversal keys for the entire application.
	15. 15. 18.	Change the backward focus traversal keys for the application
	15. 15. 19.	Change the forward focus traversal keys for a component
	15. 15. 20.	JComponent.setFocusTraversalKeys(int arg0, Set arg1)
	15. 15. 21.	KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS
	15. 15. 22.	Setting Focus Traversal Keys for the Entire Application
	15. 15. 23.	KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS
	15. 15. 24.	KeyboardFocusManager.getCurrentKeyboardFocusManager().getDefaultFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS)
	15. 15. 25.	KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwner()
	15. 15. 26.	Determining the Opposite Component of a Focus Event
	15. 15. 27.	Listening to All Key Events Before Delivery to Focused Component
	15. 15. 28.	Removing the Focus from the Application
	15. 15. 29.	Use isFocusOwner to determine whether a particular component has the focus
	15. 15. 30.	JComponent.WHEN_IN_FOCUSED_WINDOW
	15. 15. 31.	Make sure that my Text field has the focus when a JFrame is created

www.java2java.com | Contact Us

All other trademarks are property of their respective owners.