Example usage for java.awt FocusTraversalPolicy getComponentAfter

Introduction

In this page you can find the example usage for java.awt FocusTraversalPolicy getComponentAfter.

Prototype

public abstract Component getComponentAfter(Container aContainer, Component aComponent);

Source Link

Document

Returns the Component that should receive the focus after aComponent.

Usage

From source file:Main.java

public static Component findNextFocus() {
    Component c = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
    Container root = c.getFocusCycleRootAncestor();

    FocusTraversalPolicy policy = root.getFocusTraversalPolicy();
    Component nextFocus = policy.getComponentAfter(root, c);
    if (nextFocus == null) {
        nextFocus = policy.getDefaultComponent(root);
    }//from   w w  w.j ava2  s  .com
    return nextFocus;
}

---

From source file:Main.java

public static Component compositeRequestFocus(Component component) {
    if (component instanceof Container) {
        Container container = (Container) component;
        if (container.isFocusCycleRoot()) {
            FocusTraversalPolicy policy = container.getFocusTraversalPolicy();
            Component comp = policy.getDefaultComponent(container);
            if (comp != null) {
                comp.requestFocus();/*  ww  w .j a  v  a2s  .  c  o  m*/
                return comp;
            }
        }
        Container rootAncestor = container.getFocusCycleRootAncestor();
        if (rootAncestor != null) {
            FocusTraversalPolicy policy = rootAncestor.getFocusTraversalPolicy();
            Component comp = policy.getComponentAfter(rootAncestor, container);

            if (comp != null && SwingUtilities.isDescendingFrom(comp, container)) {
                comp.requestFocus();
                return comp;
            }
        }
    }
    if (component.isFocusable()) {
        component.requestFocus();
        return component;
    }
    return null;
}

---

From source file:org.jdal.swing.form.FormFocusTransversalPolicy.java

@Override
public Component getComponentAfter(Container container, Component component) {

    // Fix awt bug looking for ComboBoxEditor instead ComboBox
    // see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6205817
    if (component.getParent() instanceof JComboBox)
        component = component.getParent();

    int index = components.indexOf(component);

    if (index == -1) { // not owner
        Container childContainer = getTopmostProvider(container, component);
        if (childContainer == null)
            return getFirstComponent(container);

        FocusTraversalPolicy ftp = childContainer.getFocusTraversalPolicy();
        if (ftp != null && ftp != this) {
            Component next = ftp.getComponentAfter(childContainer, component);
            if (next != ftp.getFirstComponent(container))
                return next;

            // child cycle
            do {/* ww  w.j a  v a2  s.  c  o  m*/
                index = components.indexOf(childContainer);
                childContainer = childContainer.getParent();
            } while (index == -1 || childContainer == null);

            if (index == -1) {
                log.warn("I can't figure what is the next component");
                return getFirstComponent(container);
            }
        }
    }

    index++;

    if (index < components.size() && index >= 0) {
        Component c = getComponent(index);
        if (c.isEnabled() && c.isFocusable())
            return c;
        else
            return getComponentAfter(container, c);
    }

    return getFirstComponent(container);
}

---