Example usage for java.awt Component isFocusable

Introduction

In this page you can find the example usage for java.awt Component isFocusable.

Prototype

public boolean isFocusable() 

Source Link

Document

Returns whether this Component can be focused.

Usage

From source file:Main.java

public static boolean isFocusable(Component c) {
    return c.isFocusable() && c.isDisplayable() && c.isVisible() && c.isEnabled();
}

---

From source file:Main.java

/**
 * Returns whether atleast one of child components within the specified
 * container is focusable or not./*from   www. j av  a2  s.c o m*/
 *
 * @param container
 *            container to process
 * @return true if atleast one of child components within the specified
 *         container is focusable, false otherwise
 */
public static boolean hasFocusableComponent(final Container container) {
    for (final Component component : container.getComponents()) {
        if (component.isFocusable()) {
            return true;
        } else if (component instanceof Container) {
            if (hasFocusableComponent((Container) component)) {
                return true;
            }
        }
    }
    return false;
}

---

From source file:Main.java

/**
 * Returns first focusable component found in the container.
 *
 * @param container container to process
 * @return first focusable component found in the container
 *//*from w w  w.j  a  v a2  s. com*/
public static Component findFocusableComponent(final Container container) {
    final FocusTraversalPolicy focusTraversalPolicy = container.getFocusTraversalPolicy();
    if (focusTraversalPolicy != null) {
        return focusTraversalPolicy.getFirstComponent(container);
    } else {
        for (final Component component : container.getComponents()) {
            if (component.isFocusable()) {
                return component;
            }
            if (component instanceof Container) {
                final Component focusable = findFocusableComponent((Container) component);
                if (focusable != null) {
                    return focusable;
                }
            }
        }
        return null;
    }
}

---

From source file:Main.java

public static boolean focusFirstFocusableComponent(Component c) {
    if (c == null) {
        return false;
    }/* w w w  .  ja v  a  2s  .  c o m*/

    if (c instanceof JComponent) {
        if (((JComponent) c).isRequestFocusEnabled() && c.requestFocusInWindow()) {
            return true;
        }
    }

    if (c.isFocusable() && c.requestFocusInWindow()) {
        return true;
    }

    if (!(c instanceof Container)) {
        return false;
    }

    return focusFirstFocusableChild((Container) c);
}

---

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();//from  www . j ava  2 s . co 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:edu.ku.brc.af.ui.forms.FormViewObj.java

/**
 * This will choose the first focusable UI component that doesn't have a value. 
 * BUT! It always chooses a JTextField over anything else.
 * (NOTE: We may want a non-JTextField that is required to override a JTextField that is not.)
 * //from  ww  w .j  a  va  2  s .co  m
 * @return the focusable first object.
 */
public Component getFirstFocusable() {
    int insertPos = Integer.MAX_VALUE;
    Component focusable = null;
    Component first = null;
    for (FVOFieldInfo compFI : compsList) {
        Component comp = compFI.getComp();

        if (comp.isEnabled() && comp.isFocusable() && comp instanceof GetSetValueIFace) {
            Object val = ((GetSetValueIFace) comp).getValue();
            if (val == null || (val instanceof String && StringUtils.isEmpty((String) val))) {
                if (comp instanceof ValFormattedTextFieldSingle) {
                    ValFormattedTextFieldSingle vtf = (ValFormattedTextFieldSingle) comp;
                    if (vtf.getFormatter() != null && vtf.getFormatter().isIncrementer()) {
                        continue;
                    }
                }
                boolean override = false;//focusable instanceof JTextField && !(comp instanceof JTextField);

                if (compFI.getInsertPos() < insertPos || override) {

                    if (comp instanceof UIValidatable) {

                        focusable = ((UIValidatable) comp).getValidatableUIComp();
                    } else {
                        focusable = comp;
                    }

                    if (!override) // keep the same (lower) position as the original
                    {
                        insertPos = compFI.getInsertPos();
                    }
                }
            }

            if (compFI.getInsertPos() == 0) {
                first = comp;
            }
        }
    }

    if (focusable instanceof JTextField && !(first instanceof JTextField)) {
        return focusable;
    }

    return first != null ? first : focusable;
}

---

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 {/*from   w ww . j av  a  2 s  .c  om*/
                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);
}

---