/*

 * Copyright (c) 2002, 2014, 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

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 */

package javax.swing.plaf.synth;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.plaf.*;

import javax.swing.plaf.basic.BasicDesktopIconUI;

import java.beans.*;

/**

 * Provides the Synth L&F UI delegate for a minimized internal frame on a desktop.

 *

 * @author Joshua Outwater

 * @since 1.7

 */

public class SynthDesktopIconUI extends BasicDesktopIconUI

                                implements SynthUI, PropertyChangeListener {

    private SynthStyle style;

    private Handler handler = new Handler();

    /**

     * Creates a new UI object for the given component.

     *

     * @param c component to create UI object for

     * @return the UI object

     */

    public static ComponentUI createUI(JComponent c)    {

        return new SynthDesktopIconUI();

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void installComponents() {

        if (UIManager.getBoolean("InternalFrame.useTaskBar")) {

            @SuppressWarnings("serial") // anonymous class

            JToggleButton tmp = new JToggleButton(frame.getTitle(), frame.getFrameIcon()) {

                @Override public String getToolTipText() {

                    return getText();

                }

                @Override public JPopupMenu getComponentPopupMenu() {

                    return frame.getComponentPopupMenu();

                }

            };

            iconPane = tmp;

            ToolTipManager.sharedInstance().registerComponent(iconPane);

            iconPane.setFont(desktopIcon.getFont());

            iconPane.setBackground(desktopIcon.getBackground());

            iconPane.setForeground(desktopIcon.getForeground());

        } else {

            iconPane = new SynthInternalFrameTitlePane(frame);

            iconPane.setName("InternalFrame.northPane");

        }

        desktopIcon.setLayout(new BorderLayout());

        desktopIcon.add(iconPane, BorderLayout.CENTER);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void installListeners() {

        super.installListeners();

        desktopIcon.addPropertyChangeListener(this);

        if (iconPane instanceof JToggleButton) {

            frame.addPropertyChangeListener(this);

            ((JToggleButton)iconPane).addActionListener(handler);

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void uninstallListeners() {

        if (iconPane instanceof JToggleButton) {

            ((JToggleButton)iconPane).removeActionListener(handler);

            frame.removePropertyChangeListener(this);

        }

        desktopIcon.removePropertyChangeListener(this);

        super.uninstallListeners();

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void installDefaults() {

        updateStyle(desktopIcon);

    }

    private void updateStyle(JComponent c) {

        SynthContext context = getContext(c, ENABLED);

        style = SynthLookAndFeel.updateStyle(context, this);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void uninstallDefaults() {

        SynthContext context = getContext(desktopIcon, ENABLED);

        style.uninstallDefaults(context);

        style = null;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public SynthContext getContext(JComponent c) {

        return getContext(c, getComponentState(c));

    }

    private SynthContext getContext(JComponent c, int state) {

        return SynthContext.getContext(c, style, state);

    }

    private int getComponentState(JComponent c) {

        return SynthLookAndFeel.getComponentState(c);

    }

    /**

     * Notifies this UI delegate to repaint the specified component.

     * This method paints the component background, then calls

     * the {@link #paint(SynthContext,Graphics)} method.

     *

     * <p>In general, this method does not need to be overridden by subclasses.

     * All Look and Feel rendering code should reside in the {@code paint} method.

     *

     * @param g the {@code Graphics} object used for painting

     * @param c the component being painted

     * @see #paint(SynthContext,Graphics)

     */

    @Override

    public void update(Graphics g, JComponent c) {

        SynthContext context = getContext(c);

        SynthLookAndFeel.update(context, g);

        context.getPainter().paintDesktopIconBackground(context, g, 0, 0,

                                                  c.getWidth(), c.getHeight());

        paint(context, g);

    }

    /**

     * Paints the specified component according to the Look and Feel.

     * <p>This method is not used by Synth Look and Feel.

     * Painting is handled by the {@link #paint(SynthContext,Graphics)} method.

     *

     * @param g the {@code Graphics} object used for painting

     * @param c the component being painted

     * @see #paint(SynthContext,Graphics)

     */

    @Override

    public void paint(Graphics g, JComponent c) {

        SynthContext context = getContext(c);

        paint(context, g);

    }

    /**

     * Paints the specified component. This implementation does nothing.

     *

     * @param context context for the component being painted

     * @param g the {@code Graphics} object used for painting

     * @see #update(Graphics,JComponent)

     */

    protected void paint(SynthContext context, Graphics g) {

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void paintBorder(SynthContext context, Graphics g, int x,

                            int y, int w, int h) {

        context.getPainter().paintDesktopIconBorder(context, g, x, y, w, h);

    }

    public void propertyChange(PropertyChangeEvent evt) {

        if (evt.getSource() instanceof JInternalFrame.JDesktopIcon) {

            if (SynthLookAndFeel.shouldUpdateStyle(evt)) {

                updateStyle((JInternalFrame.JDesktopIcon)evt.getSource());

            }

        } else if (evt.getSource() instanceof JInternalFrame) {

            JInternalFrame frame = (JInternalFrame)evt.getSource();

            if (iconPane instanceof JToggleButton) {

                JToggleButton button = (JToggleButton)iconPane;

                String prop = evt.getPropertyName();

                if (prop == "title") {

                    button.setText((String)evt.getNewValue());

                } else if (prop == "frameIcon") {

                    button.setIcon((Icon)evt.getNewValue());

                } else if (prop == JInternalFrame.IS_ICON_PROPERTY ||

                           prop == JInternalFrame.IS_SELECTED_PROPERTY) {

                    button.setSelected(!frame.isIcon() && frame.isSelected());

                }

            }

        }

    }

    private final class Handler implements ActionListener {

        public void actionPerformed(ActionEvent evt) {

            if (evt.getSource() instanceof JToggleButton) {

                // Either iconify the frame or deiconify and activate it.

                JToggleButton button = (JToggleButton)evt.getSource();

                try {

                    boolean selected = button.isSelected();

                    if (!selected && !frame.isIconifiable()) {

                        button.setSelected(true);

                    } else {

                        frame.setIcon(!selected);

                        if (selected) {

                            frame.setSelected(true);

                        }

                    }

                } catch (PropertyVetoException e2) {

                }

            }

        }

    }

}