/*

 * Copyright (c) 2005, 2006, 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.tools.jconsole;

import java.awt.*;

import java.awt.event.*;

import java.beans.*;

import javax.swing.*;

import javax.swing.border.*;

import javax.swing.text.*;

import static javax.swing.JOptionPane.*;

@SuppressWarnings("serial")

public final class SheetDialog {

    // Reusable objects

    private static Rectangle iconR = new Rectangle();

    private static Rectangle textR = new Rectangle();

    private static Rectangle viewR = new Rectangle();

    private static Insets viewInsets = new Insets(0, 0, 0, 0);

    /** Don't let anyone instantiate this class */

    private SheetDialog() {

    }

    static JOptionPane showOptionDialog(final VMPanel vmPanel, Object message,

                                        int optionType, int messageType,

                                        Icon icon, Object[] options, Object initialValue) {

        JRootPane rootPane = SwingUtilities.getRootPane(vmPanel);

        JPanel glassPane = (JPanel)rootPane.getGlassPane();

        if (!(glassPane instanceof SlideAndFadeGlassPane)) {

            glassPane = new SlideAndFadeGlassPane();

            glassPane.setName(rootPane.getName()+".glassPane");

            rootPane.setGlassPane(glassPane);

            rootPane.revalidate();

        }

        final SlideAndFadeGlassPane safGlassPane = (SlideAndFadeGlassPane)glassPane;

        // Workaround for the fact that JOptionPane does not handle

        // limiting the width when using multi-line html messages.

        // See Swing bug 5074006 and JConsole bug 6426317

        message = fixWrapping(message, rootPane.getWidth() - 75); // Leave room for icon

        final SheetOptionPane optionPane = new SheetOptionPane(message, messageType, optionType,

                                                           icon, options, initialValue);

        optionPane.setComponentOrientation(vmPanel.getComponentOrientation());

        optionPane.addPropertyChangeListener(new PropertyChangeListener() {

            public void propertyChange(PropertyChangeEvent event) {

                if (event.getPropertyName().equals(VALUE_PROPERTY) &&

                    event.getNewValue() != null &&

                    event.getNewValue() != UNINITIALIZED_VALUE) {

                    ((SlideAndFadeGlassPane)optionPane.getParent()).hide(optionPane);

                }

            }

        });

        // Delay this (even though we're already on the EDT)

        EventQueue.invokeLater(new Runnable() {

            public void run() {

                safGlassPane.show(optionPane);

            }

        });

        return optionPane;

    }

    private static Object fixWrapping(Object message, final int maxWidth) {

        if (message instanceof Object[]) {

            Object[] arr = (Object[])message;

            for (int i = 0; i < arr.length; i++) {

                arr[i] = fixWrapping(arr[i], maxWidth);

            }

        } else if (message instanceof String &&

                   ((String)message).startsWith("<html>")) {

            message = new JLabel((String)message) {

                public Dimension getPreferredSize() {

                    String text = getText();

                    Insets insets = getInsets(viewInsets);

                    FontMetrics fm = getFontMetrics(getFont());

                    Dimension pref = super.getPreferredSize();

                    Dimension min = getMinimumSize();

                    iconR.x = iconR.y = iconR.width = iconR.height = 0;

                    textR.x = textR.y = textR.width = textR.height = 0;

                    int dx = insets.left + insets.right;

                    int dy = insets.top + insets.bottom;

                    viewR.x = dx;

                    viewR.y = dy;

                    viewR.width = viewR.height = Short.MAX_VALUE;

                    View v = (View)getClientProperty("html");

                    if (v != null) {

                        // Use pref width if less than 300, otherwise

                        // min width up to size of window.

                        int w = Math.min(maxWidth,

                                         Math.min(pref.width,

                                                  Math.max(min.width, 300)));

                        v.setSize((float)w, 0F);

                        SwingUtilities.layoutCompoundLabel(this, fm, text, null,

                                                           getVerticalAlignment(),

                                                           getHorizontalAlignment(),

                                                           getVerticalTextPosition(),

                                                           getHorizontalTextPosition(),

                                                           viewR, iconR, textR,

                                                           getIconTextGap());

                        return new Dimension(textR.width + dx,

                                             textR.height + dy);

                    } else {

                        return pref; //  Should not happen

                    }

                }

            };

        }

        return message;

    }

    private static class SlideAndFadeGlassPane extends JPanel {

        SheetOptionPane optionPane;

        int fade = 20;

        boolean slideIn = true;

        SlideAndFadeGlassPane() {

            super(null);

            setVisible(false);

            setOpaque(false);

            // Grab mouse input, making the dialog modal

            addMouseListener(new MouseAdapter() {});

        }

        public void show(SheetOptionPane optionPane) {

            this.optionPane = optionPane;

            removeAll();

            add(optionPane);

            setVisible(true);

            slideIn = true;

            revalidate();

            repaint();

            doSlide();

        }

        public void hide(SheetOptionPane optionPane) {

            if (optionPane != this.optionPane) {

                return;

            }

            slideIn = false;

            revalidate();

            repaint();

            doSlide();

        }

        private void doSlide() {

            if (optionPane.getParent() == null) {

                return;

            }

            if (optionPane.getWidth() == 0) {

                optionPane.setSize(optionPane.getPreferredSize());

            }

            int glassPaneWidth = getWidth();

            if (glassPaneWidth == 0 && getParent() != null) {

                glassPaneWidth = getParent().getWidth();

            }

            int x = (glassPaneWidth - optionPane.getWidth()) / 2;

            if (!slideIn) {

                    remove(optionPane);

                    setVisible(false);

                    return;

            } else {

                    optionPane.setLocation(x, 0);

                    setGrayLevel(fade);

                    return;

            }

        }

        public void setGrayLevel(int gray) {

            gray = gray * 255 / 100;

            setBackground(new Color(0, 0, 0, gray));

        }

        public void paint(Graphics g) {

            g.setColor(getBackground());

            g.fillRect(0, 0, getWidth(), getHeight());

            super.paint(g);

        }

    }

    static class SheetOptionPane extends JOptionPane {

        SheetOptionPane(Object message, int messageType, int optionType,

                        Icon icon, Object[] options, Object initialValue) {

            super(message, messageType, optionType, icon, options, initialValue);

            setBorder(new CompoundBorder(new LineBorder(new Color(204, 204, 204), 1),

                                         new EmptyBorder(4, 4, 4, 4)));

        }

        private static Composite comp =

            AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.8F);

        private static Color bgColor = new Color(241, 239, 239);

        public void setVisible(boolean visible) {

            SlideAndFadeGlassPane glassPane = (SlideAndFadeGlassPane)getParent();

            if (glassPane != null) {

                if (visible) {

                    glassPane.show(this);

                } else {

                    glassPane.hide(this);

                }

            }

        }

        public void paint(Graphics g) {

            Graphics2D g2d = (Graphics2D)g;

            Composite oldComp = g2d.getComposite();

            g2d.setComposite(comp);

            Color oldColor = g2d.getColor();

            g2d.setColor(bgColor);

            g2d.fillRect(0, 0, getWidth(), getHeight());

            g2d.setColor(oldColor);

            g2d.setComposite(oldComp);

            super.paint(g);

        }

    }

}