source: josm/trunk/src/org/openstreetmap/josm/gui/preferences/ColorPreference.java@ 798

// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.gui.preferences;

import static org.openstreetmap.josm.tools.I18n.tr;
import static org.openstreetmap.josm.tools.I18n.marktr;

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import java.util.Vector;

import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.visitor.SimplePaintVisitor;
import org.openstreetmap.josm.tools.ColorHelper;
import org.openstreetmap.josm.tools.GBC;

public class ColorPreference implements PreferenceSetting {

        private DefaultTableModel tableModel;
        private JTable colors;

        /**
         * Set the colors to be shown in the preference table. This method creates a table model if
         * none exists and overwrites all existing values.
         * @param colorMap the map holding the colors 
         * (key = color id (without prefixes, so only <code>background</code>; not <code>color.background</code>), 
         * value = html representation of the color.
         */
        public void setColorModel(Map<String, String> colorMap) {
                if(tableModel == null) {
                        tableModel = new DefaultTableModel();
                        tableModel.addColumn(tr("Color"));
                        tableModel.addColumn(tr("Name"));
                }
                
                // clear old model:
                while(tableModel.getRowCount() > 0) {
                        tableModel.removeRow(0);
                }
                // fill model with colors:
                List<String> colorKeyList = new ArrayList<String>();
                for(String key : colorMap.keySet()) {
                        colorKeyList.add(key);
                }
                Collections.sort(colorKeyList);
                for (String key : colorKeyList) {
                        Vector<Object> row = new Vector<Object>(2);
                        row.add(key);
                        row.add(ColorHelper.html2color(colorMap.get(key)));
                        tableModel.addRow(row);
                }
                if(this.colors != null) {
                        this.colors.repaint();
                }               
        }
        
        /**
         * Returns a map with the colors in the table (key = color name without prefix, value = html color code).
         * @return a map holding the colors.
         */
        public Map<String, String> getColorModel() {
                String key;
                String value;
                Map<String, String> colorMap = new HashMap<String, String>();
                for(int row = 0; row < tableModel.getRowCount(); ++row) {
                        key = (String)tableModel.getValueAt(row, 0);
                        value = ColorHelper.color2html((Color)tableModel.getValueAt(row, 1));
                        colorMap.put(key, value);
                }
                return colorMap;
        }
        
        public void addGui(final PreferenceDialog gui) {
                // initial fill with colors from preferences:
                Map<String,String> prefColorMap = new TreeMap<String, String>(Main.pref.getAllPrefix("color."));
                fixColorPrefixes(prefColorMap);
                Map<String,String> colorMap = new TreeMap<String, String>();
                for(String key : prefColorMap.keySet()) {
                        colorMap.put(key.substring("color.".length()), prefColorMap.get(key));
                }
                setColorModel(colorMap);
                
                colors = new JTable(tableModel) {
                        @Override public boolean isCellEditable(int row, int column) {
                                return false;
                        }
                };
                colors.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
                final TableCellRenderer oldColorsRenderer = colors.getDefaultRenderer(Object.class);
                colors.setDefaultRenderer(Object.class, new TableCellRenderer(){
                        public Component getTableCellRendererComponent(JTable t, Object o, boolean selected, boolean focus, int row, int column) {
                                if (column == 1) {
                                        JLabel l = new JLabel(ColorHelper.color2html((Color)o));
                                        l.setBackground((Color)o);
                                        l.setOpaque(true);
                                        return l;
                                }
                                return oldColorsRenderer.getTableCellRendererComponent(t,tr(o.toString()),selected,focus,row,column);
                        }
                });
                colors.getColumnModel().getColumn(1).setWidth(100);

                JButton colorEdit = new JButton(tr("Choose"));
                colorEdit.addActionListener(new ActionListener(){
                        public void actionPerformed(ActionEvent e) {
                                if (colors.getSelectedRowCount() == 0) {
                                        JOptionPane.showMessageDialog(gui, tr("Please select a color."));
                                        return;
                                }
                                int sel = colors.getSelectedRow();
                                JColorChooser chooser = new JColorChooser((Color)colors.getValueAt(sel, 1));
                                int answer = JOptionPane.showConfirmDialog(gui, chooser, tr("Choose a color for {0}", colors.getValueAt(sel, 0)), JOptionPane.OK_CANCEL_OPTION);
                                if (answer == JOptionPane.OK_OPTION)
                                        colors.setValueAt(chooser.getColor(), sel, 1);
                        }
                });
                colors.setToolTipText(tr("Colors used by different objects in JOSM."));
                colors.setPreferredScrollableViewportSize(new Dimension(100,112));
                gui.display.add(new JLabel(tr("Colors")), GBC.eol());
                gui.display.add(new JScrollPane(colors), GBC.eol().fill(GBC.BOTH));
                gui.display.add(colorEdit, GBC.eol().anchor(GBC.EAST));
    }

        /**
         * Add all missing color entries.
         */
        private void fixColorPrefixes(Map<String, String> prefColorMap) {
                String[] cp = {
                        marktr("background"), ColorHelper.color2html(Color.black),
                        marktr("node"), ColorHelper.color2html(Color.red),
                        marktr("way"), ColorHelper.color2html(SimplePaintVisitor.darkblue),
                        marktr("incomplete way"), ColorHelper.color2html(SimplePaintVisitor.darkerblue),
                        marktr("relation"), ColorHelper.color2html(SimplePaintVisitor.teal),
                        marktr("selected"), ColorHelper.color2html(Color.white),
                        marktr("gps point"), ColorHelper.color2html(Color.gray),
                        marktr("conflict"), ColorHelper.color2html(Color.gray),
                        marktr("scale"), ColorHelper.color2html(Color.white),
                        marktr("inactive"), ColorHelper.color2html(Color.darkGray),
                };
                for (int i = 0; i < cp.length/2; ++i)
                        if (!Main.pref.hasKey("color."+cp[i*2]))
                                Main.pref.put("color."+cp[i*2], cp[i*2+1]);
    }

        public void ok() {
                for (int i = 0; i < colors.getRowCount(); ++i) {
                        String name = (String)colors.getValueAt(i, 0);
                        Color col = (Color)colors.getValueAt(i, 1);
                        Main.pref.put("color." + name, ColorHelper.color2html(col));
                }
    }
}