source: trunk/src/org/expeditee/items/widgets/SampleWidget2.java@ 1511

/**
 *    SampleWidget2.java
 *    Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program 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 for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.expeditee.items.widgets;

import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Random;

import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.JToggleButton;

import org.expeditee.core.Colour;
import org.expeditee.gio.swing.SwingConversions;
import org.expeditee.gio.swing.SwingFontManager;
import org.expeditee.items.Text;

public class SampleWidget2 extends SwingWidget {

        private static final Font STANDARD_FONT = SwingFontManager.getInstance().getInternalFont(SwingFontManager.getInstance().getDefaultFont());
        private static final Font BIG_FONT = STANDARD_FONT.deriveFont(STANDARD_FONT.getSize() * 2f);
        private final JComboBox<String> cmboPrepend;
        private final JTextArea utxt = new JTextArea();;
                
        public SampleWidget2(Text source, String[] args) {
                super(source, new JSplitPane(JSplitPane.VERTICAL_SPLIT), 60, -1, 40, -1);
                final JSplitPane sp = (JSplitPane)super._swingComponent;
                
                //Build controls area.
                final JPanel controls = new JPanel(new FlowLayout());
                controls.setBackground(SwingConversions.toSwingColor(Colour.FromRGB255(255,228,195)));
                
                final JLabel lblTitle = new JLabel("This is an example Widget!");
                lblTitle.setFont(BIG_FONT);
                
                final JToggleButton tbtnStyle = new JToggleButton("Toggle Style");
                tbtnStyle.setFont(BIG_FONT);
                tbtnStyle.addItemListener(new ToggleStyle(utxt));
                
                final JCheckBox ckbBigFont = new JCheckBox("Big Font");
                ckbBigFont.setBackground(null);
                ckbBigFont.setSelected(true);
                ckbBigFont.setFont(BIG_FONT);
                ckbBigFont.addItemListener(new ToggleBigFont(utxt));
                
                final Random r = new Random();
                final String[] options = new String[] { "Item: " + r.nextInt(100), "Item: " + r.nextInt(100), "Item: " + r.nextInt(100), "Item: " + r.nextInt(100), "Item: " + r.nextInt(100), 
                                "Item: " + r.nextInt(100), "Item: " + r.nextInt(100), "Item: " + r.nextInt(100), "Item: " + r.nextInt(100), "Item: " + r.nextInt(100) };
                cmboPrepend = new JComboBox<String>(options);
                cmboPrepend.setFont(BIG_FONT);
                cmboPrepend.addActionListener(new PrependManager(cmboPrepend, utxt));
                cmboPrepend.setLightWeightPopupEnabled(false);
                
                controls.add(lblTitle);
                controls.add(cmboPrepend);
                controls.add(tbtnStyle);
                controls.add(ckbBigFont);               
                sp.setTopComponent(controls);
                
                //Build user text area.
                utxt.setFont(BIG_FONT);
                sp.setBottomComponent(utxt);

                //Initialise state
                init(args, cmboPrepend, utxt);          
        }

        private void init(String[] args, final JComboBox<String> cmboPrepend, final JTextArea utxt) {
                if (args != null && args.length >= 1) {
                        
                        int selectedItem = 0;
                        
                        // extract selected index
                        if (args.length >= 1 && args[0] != null) {
                                try {
                                        selectedItem = Integer.parseInt(args[0]);
                                } catch (NumberFormatException e) {
                                        e.printStackTrace();
                                }
                        }
                        
                        if (selectedItem < 0) {
                                selectedItem = 0;
                        } else if (selectedItem >= cmboPrepend.getItemCount()) {
                                selectedItem = cmboPrepend.getItemCount() - 1;
                        }
                        
                        cmboPrepend.setSelectedIndex(selectedItem);
                        
                        if (args.length >= 2 && args[1] != null) {
                                utxt.setText(args[1]);
                        }
                        
                        if (args.length >= 3 && args[2] != null) {
                                try {
                                        int div = Integer.parseInt(args[2]);
                                        ((JSplitPane)super._swingComponent).setDividerLocation(div);
                                } catch (NumberFormatException e) {}
                                
                        }
                }
        }

        private class PrependManager implements ActionListener {
                private JComboBox<String> toConsult;
                private JTextArea toAlter;
                public PrependManager(final JComboBox<String> toConsult, final JTextArea toAlter) {
                        this.toConsult = toConsult;
                        this.toAlter = toAlter;
                }
                
                @Override
                public void actionPerformed(ActionEvent e) {
                        this.toAlter.setText(this.toConsult.getSelectedItem() + " " + this.toAlter.getText());
                }
        }
        
        private class ToggleStyle implements ItemListener {
                private JTextArea toToggle;
                public ToggleStyle(final JTextArea toToggle) {
                        this.toToggle = toToggle;                       
                }
                
                @Override
                public void itemStateChanged(final ItemEvent e) {
                        if(e.getStateChange() == ItemEvent.SELECTED) {
                                toToggle.setFont(toToggle.getFont().deriveFont(Font.BOLD));
                        } else if (e.getStateChange() == ItemEvent.DESELECTED) {
                                toToggle.setFont(toToggle.getFont().deriveFont(Font.PLAIN));
                        }
                }
        }
        
        private class ToggleBigFont implements ItemListener {
                private JTextArea toToggle;

                public ToggleBigFont(final JTextArea toToggle) {
                        this.toToggle = toToggle;       
                }

                @Override
                public void itemStateChanged(final ItemEvent e) {
                        if(e.getStateChange() == ItemEvent.SELECTED) {
                                toToggle.setFont(BIG_FONT.deriveFont(toToggle.getFont().getStyle()));
                        } else if(e.getStateChange() == ItemEvent.DESELECTED) {
                                toToggle.setFont(STANDARD_FONT.deriveFont(toToggle.getFont().getStyle()));
                        }
                }
        }
        
        @Override
        protected String[] getArgs() {
                
                return new String[] { 
                                Integer.toString(cmboPrepend.getSelectedIndex()),
                                utxt.getText(),
                                Integer.toString(((JSplitPane)super._swingComponent).getDividerLocation())
                        };
        }
}