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ColorPreference.java

// 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.xnap.commons.i18n.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("segment"), ColorHelper.color2html(SimplePaintVisitor.darkgreen),
                  marktr("way"), ColorHelper.color2html(SimplePaintVisitor.darkblue),
                  marktr("incomplete way"), ColorHelper.color2html(SimplePaintVisitor.darkerblue),
                  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));
            }
    }
}

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