/*
 * Copyright (C) 2012 Brendan Robert (BLuRry) brendan.robert@gmail.com.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */
package jace.config;

import jace.apple2e.Apple2e;
import jace.config.Configuration.ConfigNode;
import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.io.File;
import java.lang.reflect.Field;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JTree;

/**
 * Configuration user interface.  Not pretty but it works.
 * Created on Dec 16, 2010, 3:23:13 PM
 * @author Brendan Robert (BLuRry) brendan.robert@gmail.com 
 */
public class ConfigurationPanel extends javax.swing.JPanel {

    public static void main(String... args) {
        new Apple2e();
        Apple2e.getComputer().reconfigure();
        Configuration.loadSettings();
        JFrame f = new JFrame();
        f.setContentPane(new ConfigurationPanel());
        f.setSize(f.getContentPane().getPreferredSize());
        f.validate();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setVisible(true);
    }

    /** Creates new form ConfigurationPanel */
    public ConfigurationPanel() {
        initComponents();
        expandAll(configTree);
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        configTreeScrollPane = new javax.swing.JScrollPane();
        configTree = new javax.swing.JTree();
        settingsPanel = new javax.swing.JPanel();
        applyButton = new javax.swing.JButton();
        saveButton = new javax.swing.JButton();
        revertButton = new javax.swing.JButton();

        setPreferredSize(new java.awt.Dimension(650, 480));

        configTree.setModel(new Configuration.ConfigTreeModel());
        configTree.addTreeSelectionListener(new javax.swing.event.TreeSelectionListener() {
            public void valueChanged(javax.swing.event.TreeSelectionEvent evt) {
                configTreeValueChanged(evt);
            }
        });
        configTreeScrollPane.setViewportView(configTree);

        settingsPanel.setAlignmentX(0.0F);
        settingsPanel.setAlignmentY(0.0F);
        settingsPanel.setPreferredSize(new java.awt.Dimension(375, 480));
        settingsPanel.setLayout(new java.awt.GridBagLayout());

        applyButton.setText("Apply");
        applyButton.setToolTipText("Apply current changes without saving");
        applyButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                applyButtonActionPerformed(evt);
            }
        });

        saveButton.setText("Save");
        saveButton.setToolTipText("Apply settings and save");
        saveButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                saveButtonActionPerformed(evt);
            }
        });

        revertButton.setText("Revert");
        revertButton.setToolTipText("Revert all settings to last saved values (hold SHIFT while clicking to revert to defaults)");
        revertButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                revertButtonActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(applyButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(saveButton)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(revertButton))
                    .addComponent(configTreeScrollPane, javax.swing.GroupLayout.PREFERRED_SIZE, 271, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(settingsPanel, javax.swing.GroupLayout.DEFAULT_SIZE, 438, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(configTreeScrollPane)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(applyButton)
                    .addComponent(saveButton)
                    .addComponent(revertButton))
                .addContainerGap())
            .addComponent(settingsPanel, javax.swing.GroupLayout.DEFAULT_SIZE, 0, Short.MAX_VALUE)
        );
    }// </editor-fold>//GEN-END:initComponents

    ConfigNode currentNode = null;
    private void configTreeValueChanged(javax.swing.event.TreeSelectionEvent evt) {//GEN-FIRST:event_configTreeValueChanged
        settingsPanel.removeAll();
        ConfigNode node = (ConfigNode) evt.getPath().getLastPathComponent();
        if (currentNode == node) return;
        currentNode = node;
        if (node != null && node.subject != null && !node.getAllSettingNames().isEmpty()) {
            GridBagLayout l = (GridBagLayout) settingsPanel.getLayout();
            GridBagConstraints c = new GridBagConstraints();
            int y = 0;
            for (String s : node.getAllSettingNames()) {
                try {
                    Field f = node.subject.getClass().getField(s);
                    ConfigurableField annotation = f.getAnnotation(ConfigurableField.class);
                    if (annotation == null) continue;
                    JLabel label = new JLabel(annotation.name());
                    c.anchor = GridBagConstraints.FIRST_LINE_START;
                    c.fill = GridBagConstraints.HORIZONTAL;
                    c.gridwidth = 1;
                    c.gridy = y++;
                    c.gridx = 0;
                    c.weightx = 0.0;
                    c.insets = new Insets(2, 2, 2, 2);
                    c.ipady = 2;
                    settingsPanel.add(label,c);
                    Component edit = generateEditComponent(node, s);
                    edit.setSize(edit.getPreferredSize());
                    c.gridx = 1;
                    c.weightx = 0.5;
                    c.ipady = 0;
                    c.insets = new Insets(0, 2, 2, 2);
                    c.gridwidth = GridBagConstraints.REMAINDER;
                    settingsPanel.add(edit,c);
                    if (!annotation.description().equals("")) {
                        c.gridy = y++;
                        c.gridx = 0;
                        c.gridwidth = 2;
                        c.weightx = 0.0;
                        JLabel desc = new JLabel("<html><i>" + annotation.description());
                        c.insets = new Insets(1, 15, 7, 5);
                        settingsPanel.add(desc, c);
                    }
                } catch (NoSuchFieldException ex) {
                    Logger.getLogger(ConfigurationPanel.class.getName()).log(Level.SEVERE, null, ex);
                } catch (SecurityException ex) {
                    Logger.getLogger(ConfigurationPanel.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }

        settingsPanel.validate();
        settingsPanel.setVisible(true);
        settingsPanel.repaint();

    }//GEN-LAST:event_configTreeValueChanged

    private void applyButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_applyButtonActionPerformed
        Configuration.applySettings(Configuration.BASE);
        configTree.updateUI();
        expandAll(configTree);
    }//GEN-LAST:event_applyButtonActionPerformed

    private void saveButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_saveButtonActionPerformed
        Configuration.saveSettings();
        configTree.updateUI();
        expandAll(configTree);
    }//GEN-LAST:event_saveButtonActionPerformed

    private void revertButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_revertButtonActionPerformed
        if ((evt.getModifiers() & evt.SHIFT_MASK) != 0) {
            revertDefaultsActionPerformed(evt);
            return;
        }
        Configuration.loadSettings();
        configTree.updateUI();
        expandAll(configTree);
    }//GEN-LAST:event_revertButtonActionPerformed

    private void revertDefaultsActionPerformed(java.awt.event.ActionEvent evt) {
        if (JOptionPane.showConfirmDialog(null, "Revert all settings to defaults?", "Revert to defaults?", JOptionPane.YES_NO_OPTION) != JOptionPane.YES_OPTION)
            return;
        Configuration.resetToDefaults();
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton applyButton;
    private javax.swing.JTree configTree;
    private javax.swing.JScrollPane configTreeScrollPane;
    private javax.swing.JButton revertButton;
    private javax.swing.JButton saveButton;
    private javax.swing.JPanel settingsPanel;
    // End of variables declaration//GEN-END:variables

    public void expandAll(JTree tree) {
        for (int row = 0; row < tree.getRowCount(); tree.expandRow(row++));
    }

    private Component generateEditComponent(ConfigNode node, String s) {
        try {
            Field f = node.subject.getClass().getField(s);

            if (f.getType().isPrimitive()) {
                if (f.getType().equals(Boolean.TYPE)) {
                    return new BooleanComponent(node, s);
                } else if (f.getType().equals(Integer.TYPE)) {
                    return new IntegerComponent(node, s);
                } else if (f.getType().equals(Short.TYPE)) {
                    return new IntegerComponent(node, s);
                } else if (f.getType().equals(Byte.TYPE)) {
                    return new IntegerComponent(node, s);
                } else if (f.getType().equals(Long.TYPE)) {
                    return new IntegerComponent(node, s);
                } else {
                    return new StringComponent(node, s);
                }
            } else if (f.getType().equals(String.class)) {
                return new StringComponent(node, s);
            } else if (f.getType().equals(File.class)) {
                return new FileComponent(node, s);
            } else if (Class.class.isEnum()) {
                // TODO: Add enumeration support!
            } else if (ISelection.class.isAssignableFrom(f.getType())) {
                return new DynamicSelectComponent(node, s);
            }
            return new JTextField();
        } catch (NoSuchFieldException ex) {
            Logger.getLogger(ConfigurationPanel.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SecurityException ex) {
            Logger.getLogger(ConfigurationPanel.class.getName()).log(Level.SEVERE, null, ex);
        }
        return null;
    }
}