Java example source code file (HToolkit.java)

This example Java source code file (HToolkit.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awt, awtexception, component, datatransfer, dimension, drag, drop, fontpeer, framepeer, headlessexception, htoolkit, illegalargumentexception, image, inputmethoddescriptor, invaliddndoperationexception, keyboardfocusmanagerpeer, printjob, string, unsupportedoperationexception, util

The HToolkit.java Java example source code

/*
 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.awt;

import java.awt.*;
import java.awt.dnd.*;
import java.awt.dnd.peer.DragSourceContextPeer;
import java.awt.im.InputMethodHighlight;
import java.awt.im.spi.InputMethodDescriptor;
import java.awt.image.*;
import java.awt.datatransfer.Clipboard;
import java.awt.peer.*;
import java.util.Map;
import java.util.Properties;

/*
 * HToolkit is a platform independent Toolkit used
 * with the HeadlessToolkit.  It is primarily used
 * in embedded JRE's that do not have sun/awt/X11 classes.
 */
public class HToolkit extends SunToolkit
    implements ComponentFactory {

    private static final KeyboardFocusManagerPeer kfmPeer = new KeyboardFocusManagerPeer() {
        public void setCurrentFocusedWindow(Window win) {}
        public Window getCurrentFocusedWindow() { return null; }
        public void setCurrentFocusOwner(Component comp) {}
        public Component getCurrentFocusOwner() { return null; }
        public void clearGlobalFocusOwner(Window activeWindow) {}
    };

    public HToolkit() {
    }

    /*
     * Component peer objects - unsupported.
     */

    public WindowPeer createWindow(Window target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public FramePeer createLightweightFrame(LightweightFrame target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public FramePeer createFrame(Frame target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public DialogPeer createDialog(Dialog target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public ButtonPeer createButton(Button target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public TextFieldPeer createTextField(TextField target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public ChoicePeer createChoice(Choice target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public LabelPeer createLabel(Label target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public ListPeer createList(List target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public CheckboxPeer createCheckbox(Checkbox target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public ScrollbarPeer createScrollbar(Scrollbar target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public ScrollPanePeer createScrollPane(ScrollPane target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public TextAreaPeer createTextArea(TextArea target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public FileDialogPeer createFileDialog(FileDialog target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public MenuBarPeer createMenuBar(MenuBar target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public MenuPeer createMenu(Menu target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public PopupMenuPeer createPopupMenu(PopupMenu target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public MenuItemPeer createMenuItem(MenuItem target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public CheckboxMenuItemPeer createCheckboxMenuItem(CheckboxMenuItem target)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public DragSourceContextPeer createDragSourceContextPeer(
        DragGestureEvent dge)
        throws InvalidDnDOperationException {
        throw new InvalidDnDOperationException("Headless environment");
    }

    public RobotPeer createRobot(Robot target, GraphicsDevice screen)
        throws AWTException, HeadlessException {
        throw new HeadlessException();
    }

    public KeyboardFocusManagerPeer getKeyboardFocusManagerPeer() {
        // See 6833019.
        return kfmPeer;
    }

    public TrayIconPeer createTrayIcon(TrayIcon target)
      throws HeadlessException {
        throw new HeadlessException();
    }

    public SystemTrayPeer createSystemTray(SystemTray target)
      throws HeadlessException {
        throw new HeadlessException();
    }

    public boolean isTraySupported() {
        return false;
    }

    public GlobalCursorManager getGlobalCursorManager()
        throws HeadlessException {
        throw new HeadlessException();
    }

    /*
     * Headless toolkit - unsupported.
     */
    protected void loadSystemColors(int[] systemColors)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public ColorModel getColorModel()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public int getScreenResolution()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public Map mapInputMethodHighlight(InputMethodHighlight highlight)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public int getMenuShortcutKeyMask()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public boolean getLockingKeyState(int keyCode)
        throws UnsupportedOperationException {
        throw new HeadlessException();
    }

    public void setLockingKeyState(int keyCode, boolean on)
        throws UnsupportedOperationException {
        throw new HeadlessException();
    }

    public Cursor createCustomCursor(Image cursor, Point hotSpot, String name)
        throws IndexOutOfBoundsException, HeadlessException {
        throw new HeadlessException();
    }

    public Dimension getBestCursorSize(int preferredWidth, int preferredHeight)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public int getMaximumCursorColors()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public <T extends DragGestureRecognizer> T
        createDragGestureRecognizer(Class<T> abstractRecognizerClass,
                                    DragSource ds, Component c,
                                    int srcActions, DragGestureListener dgl)
    {
        return null;
    }

    public int getScreenHeight()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public int getScreenWidth()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public Dimension getScreenSize()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public Insets getScreenInsets(GraphicsConfiguration gc)
        throws HeadlessException {
        throw new HeadlessException();
    }

    public void setDynamicLayout(boolean dynamic)
        throws HeadlessException {
        throw new HeadlessException();
    }

    protected boolean isDynamicLayoutSet()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public boolean isDynamicLayoutActive()
        throws HeadlessException {
        throw new HeadlessException();
    }

    public Clipboard getSystemClipboard()
        throws HeadlessException {
        throw new HeadlessException();
    }

    /*
     * Printing
     */
    public PrintJob getPrintJob(Frame frame, String jobtitle,
        JobAttributes jobAttributes,
        PageAttributes pageAttributes) {
        if (frame != null) {
            // Should never happen
            throw new HeadlessException();
        }
        throw new IllegalArgumentException(
                "PrintJob not supported in a headless environment");
    }

    public PrintJob getPrintJob(Frame frame, String doctitle, Properties props)
    {
        if (frame != null) {
            // Should never happen
            throw new HeadlessException();
        }
        throw new IllegalArgumentException(
                "PrintJob not supported in a headless environment");
    }

    /*
     * Headless toolkit - supported.
     */

    public void sync() {
        // Do nothing
    }

    protected boolean syncNativeQueue(final long timeout) {
        return false;
    }

    public void beep() {
        // Send alert character
        System.out.write(0x07);
    }


    /*
     * Fonts
     */
    public FontPeer getFontPeer(String name, int style) {
        return (FontPeer)null;
    }

    /*
     * Modality
     */
    public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) {
        return false;
    }

    public boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType exclusionType) {
        return false;
    }

    public boolean isDesktopSupported() {
        return false;
    }

    public DesktopPeer createDesktopPeer(Desktop target)
    throws HeadlessException{
        throw new HeadlessException();
    }

    public boolean isWindowOpacityControlSupported() {
        return false;
    }

    public boolean isWindowShapingSupported() {
        return false;
    }

    public boolean isWindowTranslucencySupported() {
        return false;
    }

    public  void grab(Window w) { }

    public void ungrab(Window w) { }

    protected boolean syncNativeQueue() { return false; }

    public InputMethodDescriptor getInputMethodAdapterDescriptor()
        throws AWTException
    {
        return (InputMethodDescriptor)null;
    }
}