Example usage for java.awt Container setFocusTraversalKeys

Introduction

In this page you can find the example usage for java.awt Container setFocusTraversalKeys.

Prototype

public void setFocusTraversalKeys(int id, Set<? extends AWTKeyStroke> keystrokes) 

Source Link

Document

Sets the focus traversal keys for a given traversal operation for this Container.

Usage

From source file:Main.java

/**
 * install focus forward and backward// ww w  .  ja  v a  2 s  . c  o m
 */
public static void installDefaultFocusHandling(Container c) {
    // focus TAB
    HashSet<KeyStroke> set = new HashSet<KeyStroke>(1);
    set.add(KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0));
    c.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, set);

    // focus shift-TAB
    set = new HashSet<KeyStroke>(1);
    set.add(KeyStroke.getKeyStroke(KeyEvent.VK_TAB, InputEvent.SHIFT_MASK));
    c.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, set);

    // make input map WHEN_FOCUSED non-empty for Focus Traversal policy to work
    // correctly
    if (c instanceof JComponent) {
        JComponent jc = (JComponent) c;
        InputMap inputMapWhenFocused = jc.getInputMap(JComponent.WHEN_FOCUSED);
        if (inputMapWhenFocused.size() == 0) {
            inputMapWhenFocused.put(KeyStroke.getKeyStroke(KeyEvent.VK_STOP, KeyEvent.KEY_TYPED),
                    "swingDummyFocusKey");
        }
    }
}

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