/*

 * Copyright (c) 2000, 2015, 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.datatransfer.Clipboard;

import java.awt.dnd.DragGestureListener;

import java.awt.dnd.DragGestureRecognizer;

import java.awt.dnd.DragSource;

import java.awt.event.AWTEventListener;

import java.awt.font.TextAttribute;

import java.awt.im.InputMethodHighlight;

import java.awt.image.ColorModel;

import java.awt.image.ImageObserver;

import java.awt.image.ImageProducer;

import java.awt.peer.FontPeer;

import java.awt.peer.KeyboardFocusManagerPeer;

import java.awt.peer.SystemTrayPeer;

import java.awt.peer.TrayIconPeer;

import java.beans.PropertyChangeListener;

import java.net.URL;

import java.util.Map;

import java.util.Properties;

public final class HeadlessToolkit extends Toolkit

    implements ComponentFactory, KeyboardFocusManagerPeerProvider {

    private static final KeyboardFocusManagerPeer kfmPeer = new KeyboardFocusManagerPeer() {

        @Override

        public void setCurrentFocusedWindow(Window win) {}

        @Override

        public Window getCurrentFocusedWindow() { return null; }

        @Override

        public void setCurrentFocusOwner(Component comp) {}

        @Override

        public Component getCurrentFocusOwner() { return null; }

        @Override

        public void clearGlobalFocusOwner(Window activeWindow) {}

    };

    private final Toolkit tk;

    private ComponentFactory componentFactory;

    public HeadlessToolkit(Toolkit tk) {

        this.tk = tk;

        if (tk instanceof ComponentFactory) {

            componentFactory = (ComponentFactory)tk;

        }

    }

    public Toolkit getUnderlyingToolkit() {

        return tk;

    }

    @Override

    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.

     */

    @Override

    protected void loadSystemColors(int[] systemColors)

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public ColorModel getColorModel()

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public int getScreenResolution()

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public Map<TextAttribute, ?> mapInputMethodHighlight(InputMethodHighlight highlight)

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public int getMenuShortcutKeyMask()

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public boolean getLockingKeyState(int keyCode)

        throws UnsupportedOperationException {

        throw new HeadlessException();

    }

    @Override

    public void setLockingKeyState(int keyCode, boolean on)

        throws UnsupportedOperationException {

        throw new HeadlessException();

    }

    @Override

    public Cursor createCustomCursor(Image cursor, Point hotSpot, String name)

        throws IndexOutOfBoundsException, HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public Dimension getBestCursorSize(int preferredWidth, int preferredHeight)

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public int getMaximumCursorColors()

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public <T extends DragGestureRecognizer> T

        createDragGestureRecognizer(Class<T> abstractRecognizerClass,

                                    DragSource ds, Component c,

                                    int srcActions, DragGestureListener dgl)

    {

        return null;

    }

    @Override

    public Dimension getScreenSize()

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public Insets getScreenInsets(GraphicsConfiguration gc)

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public void setDynamicLayout(boolean dynamic)

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    protected boolean isDynamicLayoutSet()

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public boolean isDynamicLayoutActive()

        throws HeadlessException {

        throw new HeadlessException();

    }

    @Override

    public Clipboard getSystemClipboard()

        throws HeadlessException {

        throw new HeadlessException();

    }

    /*

     * Printing

     */

    @Override

    public PrintJob getPrintJob(Frame frame, String jobtitle,

        JobAttributes jobAttributes,

        PageAttributes pageAttributes) {

        if (frame != null) {

            // Should never happen

            throw new HeadlessException();

        }

        throw new NullPointerException("frame must not be null");

    }

    @Override

    public PrintJob getPrintJob(Frame frame, String doctitle, Properties props)

    {

        if (frame != null) {

            // Should never happen

            throw new HeadlessException();

        }

        throw new NullPointerException("frame must not be null");

    }

    /*

     * Headless toolkit - supported.

     */

    @Override

    public void sync() {

        // Do nothing

    }

    @Override

    public void beep() {

        // Send alert character

        System.out.write(0x07);

    }

    /*

     * Event Queue

     */

    @Override

    public EventQueue getSystemEventQueueImpl() {

        return SunToolkit.getSystemEventQueueImplPP();

    }

    /*

     * Images.

     */

    @Override

    public int checkImage(Image img, int w, int h, ImageObserver o) {

        return tk.checkImage(img, w, h, o);

    }

    @Override

    public boolean prepareImage(

        Image img, int w, int h, ImageObserver o) {

        return tk.prepareImage(img, w, h, o);

    }

    @Override

    public Image getImage(String filename) {

        return tk.getImage(filename);

    }

    @Override

    public Image getImage(URL url) {

        return tk.getImage(url);

    }

    @Override

    public Image createImage(String filename) {

        return tk.createImage(filename);

    }

    @Override

    public Image createImage(URL url) {

        return tk.createImage(url);

    }

    @Override

    public Image createImage(byte[] data, int offset, int length) {

        return tk.createImage(data, offset, length);

    }

    @Override

    public Image createImage(ImageProducer producer) {

        return tk.createImage(producer);

    }

    @Override

    public Image createImage(byte[] imagedata) {

        return tk.createImage(imagedata);

    }

    /*

     * Fonts

     */

    @Override

    public FontPeer getFontPeer(String name, int style) {

        if (componentFactory != null) {

            return componentFactory.getFontPeer(name, style);

        }

        return null;

    }

    @Override

    @SuppressWarnings("deprecation")

    public FontMetrics getFontMetrics(Font font) {

        return tk.getFontMetrics(font);

    }

    @Override

    @SuppressWarnings("deprecation")

    public String[] getFontList() {

        return tk.getFontList();

    }

    /*

     * Desktop properties

     */

    @Override

    public void addPropertyChangeListener(String name,

        PropertyChangeListener pcl) {

        tk.addPropertyChangeListener(name, pcl);

    }

    @Override

    public void removePropertyChangeListener(String name,

        PropertyChangeListener pcl) {

        tk.removePropertyChangeListener(name, pcl);

    }

    /*

     * Modality

     */

    @Override

    public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) {

        return false;

    }

    @Override

    public boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType exclusionType) {

        return false;

    }

    /*

     * Always on top

     */

    @Override

    public boolean isAlwaysOnTopSupported() {

        return false;

    }

    /*

     * AWT Event listeners

     */

    @Override

    public void addAWTEventListener(AWTEventListener listener,

        long eventMask) {

        tk.addAWTEventListener(listener, eventMask);

    }

    @Override

    public void removeAWTEventListener(AWTEventListener listener) {

        tk.removeAWTEventListener(listener);

    }

    @Override

    public AWTEventListener[] getAWTEventListeners() {

        return tk.getAWTEventListeners();

    }

    @Override

    public AWTEventListener[] getAWTEventListeners(long eventMask) {

        return tk.getAWTEventListeners(eventMask);

    }

    public boolean isDesktopSupported() {

        return false;

    }

    @Override

    public boolean areExtraMouseButtonsEnabled() throws HeadlessException{

        throw new HeadlessException();

    }

}