/*

 * Copyright (c) 2007, 2016, 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.

 *

 * 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 com.sun.swingset3.demos.list;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.FocusAdapter;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import java.util.Vector;

import javax.swing.*;

import com.sun.swingset3.DemoProperties;

import com.sun.swingset3.demos.ResourceManager;

/**

 * List Demo. This demo shows that it is not always necessary to have an array

 * of objects as big as the size of the list stored.

 *

 * Indeed, in this example, there is no array kept for the list data, rather it

 * is generated on the fly as only those elements are needed.

 *

 * @version 1.17 11/17/05

 * @author Jeff Dinkins

 */

@DemoProperties(

        value = "JList Demo",

        category = "Data",

        description = "Demonstrates JList, a component which supports display/editing of a data list",

        sourceFiles = {

            "com/sun/swingset3/demos/list/ListDemo.java",

            "com/sun/swingset3/demos/list/Permuter.java",

            "com/sun/swingset3/demos/ResourceManager.java",

            "com/sun/swingset3/demos/list/resources/ListDemo.properties",

            "com/sun/swingset3/demos/list/resources/images/blue.gif",

            "com/sun/swingset3/demos/list/resources/images/cyan.gif",

            "com/sun/swingset3/demos/list/resources/images/gray.gif",

            "com/sun/swingset3/demos/list/resources/images/green.gif",

            "com/sun/swingset3/demos/list/resources/images/ListDemo.gif",

            "com/sun/swingset3/demos/list/resources/images/magenta.gif",

            "com/sun/swingset3/demos/list/resources/images/red.gif",

            "com/sun/swingset3/demos/list/resources/images/yellow.gif"

        }

)

public final class ListDemo extends JPanel {

    private static final Dimension HGAP10 = new Dimension(10, 1);

    private static final Dimension VGAP10 = new Dimension(1, 10);

    private static final Dimension HGAP15 = new Dimension(15, 1);

    private static final Dimension HGAP30 = new Dimension(30, 1);

    private final ResourceManager resourceManager = new ResourceManager(this.getClass());

    public static final String DEMO_TITLE = ListDemo.class.getAnnotation(DemoProperties.class).value();

    private final JList<String> list;

    private JPanel prefixList;

    private JPanel suffixList;

    private Action prefixAction;

    private Action suffixAction;

    private final GeneratedListModel listModel;

    /**

     * main method allows us to run as a standalone demo.

     *

     * @param args

     */

    public static void main(String[] args) {

        JFrame frame = new JFrame(DEMO_TITLE);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.getContentPane().add(new ListDemo());

        frame.setPreferredSize(new Dimension(800, 600));

        frame.pack();

        frame.setLocationRelativeTo(null);

        frame.setVisible(true);

    }

    /**

     * ListDemo Constructor

     */

    public ListDemo() {

        setLayout(new BorderLayout());

        loadImages();

        JLabel description = new JLabel(resourceManager.getString("ListDemo.description"));

        add(description, BorderLayout.NORTH);

        JPanel centerPanel = new JPanel();

        centerPanel.setLayout(new BoxLayout(centerPanel, BoxLayout.X_AXIS));

        centerPanel.add(Box.createRigidArea(HGAP10));

        add(centerPanel, BorderLayout.CENTER);

        JPanel listPanel = new JPanel();

        listPanel.setLayout(new BoxLayout(listPanel, BoxLayout.Y_AXIS));

        listPanel.add(Box.createRigidArea(VGAP10));

        centerPanel.add(listPanel);

        centerPanel.add(Box.createRigidArea(HGAP30));

        // Create the list

        list = new JList<>();

        list.setCellRenderer(new CompanyLogoListCellRenderer());

        listModel = new GeneratedListModel();

        list.setModel(listModel);

        // Set the preferred row count. This affects the preferredSize

        // of the JList when it's in a scrollpane.

        list.setVisibleRowCount(22);

        // Add list to a scrollpane

        JScrollPane scrollPane = new JScrollPane(list);

        listPanel.add(scrollPane);

        listPanel.add(Box.createRigidArea(VGAP10));

        // Add the control panel (holds the prefix/suffix list and prefix/suffix checkboxes)

        centerPanel.add(createControlPanel());

        // create prefixes and suffixes

        addPrefix("Tera", true);

        addPrefix("Micro", false);

        addPrefix("Southern", false);

        addPrefix("Net", true);

        addPrefix("YoYo", true);

        addPrefix("Northern", false);

        addPrefix("Tele", false);

        addPrefix("Eastern", false);

        addPrefix("Neo", false);

        addPrefix("Digi", false);

        addPrefix("National", false);

        addPrefix("Compu", true);

        addPrefix("Meta", true);

        addPrefix("Info", false);

        addPrefix("Western", false);

        addPrefix("Data", false);

        addPrefix("Atlantic", false);

        addPrefix("Advanced", false);

        addPrefix("Euro", false);

        addPrefix("Pacific", false);

        addPrefix("Mobile", false);

        addPrefix("In", false);

        addPrefix("Computa", false);

        addPrefix("Digital", false);

        addPrefix("Analog", false);

        addSuffix("Tech", true);

        addSuffix("Soft", true);

        addSuffix("Telecom", true);

        addSuffix("Solutions", false);

        addSuffix("Works", true);

        addSuffix("Dyne", false);

        addSuffix("Services", false);

        addSuffix("Vers", false);

        addSuffix("Devices", false);

        addSuffix("Software", false);

        addSuffix("Serv", false);

        addSuffix("Systems", true);

        addSuffix("Dynamics", true);

        addSuffix("Net", false);

        addSuffix("Sys", false);

        addSuffix("Computing", false);

        addSuffix("Scape", false);

        addSuffix("Com", false);

        addSuffix("Ware", false);

        addSuffix("Widgets", false);

        addSuffix("Media", false);

        addSuffix("Computer", false);

        addSuffix("Hardware", false);

        addSuffix("Gizmos", false);

        addSuffix("Concepts", false);

    }

    private JPanel createControlPanel() {

        JPanel controlPanel = new JPanel() {

            private final Insets insets = new Insets(0, 4, 10, 10);

            @Override

            public Insets getInsets() {

                return insets;

            }

        };

        controlPanel.setLayout(new BoxLayout(controlPanel, BoxLayout.X_AXIS));

        JPanel prefixPanel = new JPanel();

        prefixPanel.setLayout(new BoxLayout(prefixPanel, BoxLayout.Y_AXIS));

        prefixPanel.add(new JLabel(resourceManager.getString("ListDemo.prefixes")));

        JPanel suffixPanel = new JPanel();

        suffixPanel.setLayout(new BoxLayout(suffixPanel, BoxLayout.Y_AXIS));

        suffixPanel.add(new JLabel(resourceManager.getString("ListDemo.suffixes")));

        prefixList = new JPanel() {

            private final Insets insets = new Insets(0, 4, 0, 0);

            @Override

            public Insets getInsets() {

                return insets;

            }

        };

        prefixList.setLayout(new BoxLayout(prefixList, BoxLayout.Y_AXIS));

        JScrollPane scrollPane = new JScrollPane(prefixList);

        scrollPane.getVerticalScrollBar().setUnitIncrement(10);

        prefixPanel.add(scrollPane);

        prefixPanel.add(Box.createRigidArea(HGAP10));

        suffixList = new JPanel() {

            private final Insets insets = new Insets(0, 4, 0, 0);

            @Override

            public Insets getInsets() {

                return insets;

            }

        };

        suffixList.setLayout(new BoxLayout(suffixList, BoxLayout.Y_AXIS));

        scrollPane = new JScrollPane(suffixList);

        scrollPane.getVerticalScrollBar().setUnitIncrement(10);

        suffixPanel.add(scrollPane);

        suffixPanel.add(Box.createRigidArea(HGAP10));

        controlPanel.add(prefixPanel);

        controlPanel.add(Box.createRigidArea(HGAP15));

        controlPanel.add(suffixPanel);

        return controlPanel;

    }

    private final FocusListener listFocusListener = new FocusAdapter() {

        @Override

        public void focusGained(FocusEvent e) {

            JComponent c = (JComponent) e.getComponent();

            c.scrollRectToVisible(new Rectangle(0, 0, c.getWidth(), c.getHeight()));

        }

    };

    private void addPrefix(String prefix, boolean selected) {

        if (prefixAction == null) {

            prefixAction = new UpdatePrefixListAction(listModel);

        }

        final JCheckBox cb = (JCheckBox) prefixList.add(new JCheckBox(prefix));

        cb.setSelected(selected);

        cb.addActionListener(prefixAction);

        if (selected) {

            listModel.addPrefix(prefix);

        }

        cb.addFocusListener(listFocusListener);

    }

    private void addSuffix(String suffix, boolean selected) {

        if (suffixAction == null) {

            suffixAction = new UpdateSuffixListAction(listModel);

        }

        final JCheckBox cb = (JCheckBox) suffixList.add(new JCheckBox(suffix));

        cb.setSelected(selected);

        cb.addActionListener(suffixAction);

        if (selected) {

            listModel.addSuffix(suffix);

        }

        cb.addFocusListener(listFocusListener);

    }

    private static class UpdatePrefixListAction extends AbstractAction {

        private final GeneratedListModel listModel;

        protected UpdatePrefixListAction(GeneratedListModel listModel) {

            this.listModel = listModel;

        }

        @Override

        public void actionPerformed(ActionEvent e) {

            JCheckBox cb = (JCheckBox) e.getSource();

            if (cb.isSelected()) {

                listModel.addPrefix(cb.getText());

            } else {

                listModel.removePrefix(cb.getText());

            }

        }

    }

    private static class UpdateSuffixListAction extends AbstractAction {

        private final GeneratedListModel listModel;

        protected UpdateSuffixListAction(GeneratedListModel listModel) {

            this.listModel = listModel;

        }

        @Override

        public void actionPerformed(ActionEvent e) {

            JCheckBox cb = (JCheckBox) e.getSource();

            if (cb.isSelected()) {

                listModel.addSuffix(cb.getText());

            } else {

                listModel.removeSuffix(cb.getText());

            }

        }

    }

    private static class GeneratedListModel extends AbstractListModel<String> {

        private Permuter permuter;

        private final Vector<String> prefix = new Vector<>();

        private final Vector<String> suffix = new Vector<>();

        private void update() {

            permuter = new Permuter(getSize());

            fireContentsChanged(this, 0, getSize());

        }

        public void addPrefix(String s) {

            if (!prefix.contains(s)) {

                prefix.addElement(s);

                update();

            }

        }

        public void removePrefix(String s) {

            prefix.removeElement(s);

            update();

        }

        public void addSuffix(String s) {

            if (!suffix.contains(s)) {

                suffix.addElement(s);

                update();

            }

        }

        public void removeSuffix(String s) {

            suffix.removeElement(s);

            update();

        }

        @Override

        public int getSize() {

            return prefix.size() * suffix.size();

        }

        @Override

        public String getElementAt(int index) {

            if (permuter == null) {

                update();

            }

            // morph the index to another int -- this has the benefit of

            // causing the list to look random.

            int j = permuter.map(index);

            int ps = prefix.size();

            int ss = suffix.size();

            return prefix.elementAt(j % ps) + suffix.elementAt((j / ps) % ss);

        }

    }

    private final ImageIcon[] images = new ImageIcon[7];

    void loadImages() {

        images[0] = resourceManager.createImageIcon("red.gif", resourceManager.getString("ListDemo.red"));

        images[1] = resourceManager.createImageIcon("blue.gif", resourceManager.getString("ListDemo.blue"));

        images[2] = resourceManager.createImageIcon("yellow.gif", resourceManager.getString("ListDemo.yellow"));

        images[3] = resourceManager.createImageIcon("green.gif", resourceManager.getString("ListDemo.green"));

        images[4] = resourceManager.createImageIcon("gray.gif", resourceManager.getString("ListDemo.gray"));

        images[5] = resourceManager.createImageIcon("cyan.gif", resourceManager.getString("ListDemo.cyan"));

        images[6] = resourceManager.createImageIcon("magenta.gif", resourceManager.getString("ListDemo.magenta"));

    }

    private class CompanyLogoListCellRenderer extends DefaultListCellRenderer {

        @Override

        public Component getListCellRendererComponent(

                JList<?> list,

                Object value,

                int index,

                boolean isSelected,

                boolean cellHasFocus) {

            Component retValue = super.getListCellRendererComponent(

                    list, value, index, isSelected, cellHasFocus

            );

            setIcon(images[index % 7]);

            return retValue;

        }

    }

}