tim/prune/function/SetMapBgFunction.java

   1 package tim.prune.function;
   2
   3 import java.awt.BorderLayout;
   4 import java.awt.Component;
   5 import java.awt.FlowLayout;
   6 import java.awt.event.ActionEvent;
   7 import java.awt.event.ActionListener;
   8 import java.awt.event.KeyAdapter;
   9 import java.awt.event.KeyEvent;
  10
  11 import javax.swing.BoxLayout;
  12 import javax.swing.ButtonGroup;
  13 import javax.swing.JButton;
  14 import javax.swing.JDialog;
  15 import javax.swing.JLabel;
  16 import javax.swing.JPanel;
  17 import javax.swing.JRadioButton;
  18 import javax.swing.JTextField;
  19
  20 import tim.prune.App;
  21 import tim.prune.Config;
  22 import tim.prune.DataSubscriber;
  23 import tim.prune.GenericFunction;
  24 import tim.prune.I18nManager;
  25 import tim.prune.UpdateMessageBroker;
  26
  27 /**
  28  * Function to set the tile server for the map backgrounds
  29  */
  30 public class SetMapBgFunction extends GenericFunction
  31 {
  32         private JDialog _dialog = null;
  33         private JButton _okButton = null;
  34         private JRadioButton[] _serverRadios = null;
  35         private JTextField _serverUrl = null;
  36         /** Index of 'other' server with freeform url */
  37         private static final int OTHER_SERVER_NUM = 3;
  38
  39
  40         /**
  41          * Constructor
  42          * @param inApp app object
  43          */
  44         public SetMapBgFunction(App inApp)
  45         {
  46                 super(inApp);
  47         }
  48
  49         /** Get the name key */
  50         public String getNameKey() {
  51                 return "function.setmapbg";
  52         }
  53
  54         /**
  55          * Begin the function
  56          */
  57         public void begin()
  58         {
  59                 // Make dialog window
  60                 if (_dialog == null)
  61                 {
  62                         _dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()), true);
  63                         _dialog.setLocationRelativeTo(_parentFrame);
  64                         _dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
  65                         _dialog.getContentPane().add(makeDialogComponents());
  66                         initValues();
  67                         _dialog.pack();
  68                 }
  69                 enableOK();
  70                 _dialog.setVisible(true);
  71         }
  72
  73
  74         /**
  75          * Create dialog components
  76          * @return Panel containing all gui elements in dialog
  77          */
  78         private Component makeDialogComponents()
  79         {
  80                 JPanel dialogPanel = new JPanel();
  81                 dialogPanel.setLayout(new BorderLayout());
  82                 // Main panel
  83                 JPanel mainPanel = new JPanel();
  84                 mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
  85                 _serverRadios = new JRadioButton[4];
  86                 ButtonGroup serverRadioGroup = new ButtonGroup();
  87                 String[] serverKeys = {"dialog.setmapbg.mapnik", "dialog.setmapbg.osma",
  88                         "dialog.setmapbg.cyclemap", "dialog.setmapbg.other"};
  89                 // action listener for radios
  90                 ActionListener changeListener = new ActionListener() {
  91                         public void actionPerformed(ActionEvent arg0) {
  92                                 enableOK();
  93                         }
  94                 };
  95                 // Create four radio buttons
  96                 for (int i=0; i<4; i++)
  97                 {
  98                         _serverRadios[i] = new JRadioButton(I18nManager.getText(serverKeys[i]));
  99                         _serverRadios[i].addActionListener(changeListener);
 100                         serverRadioGroup.add(_serverRadios[i]);
 101                         mainPanel.add(_serverRadios[i]);
 102                 }
 103                 // entry field for other server urls
 104                 mainPanel.add(new JLabel(I18nManager.getText("dialog.setmapbg.server")));
 105                 _serverUrl = new JTextField("", 12);
 106                 _serverUrl.addKeyListener(new KeyAdapter() {
 107                         public void keyReleased(KeyEvent e) {
 108                                 super.keyReleased(e);
 109                                 enableOK();
 110                         }
 111                 });
 112                 mainPanel.add(_serverUrl);
 113                 dialogPanel.add(mainPanel, BorderLayout.NORTH);
 114
 115                 // button panel at bottom
 116                 JPanel buttonPanel = new JPanel();
 117                 buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
 118                 _okButton = new JButton(I18nManager.getText("button.ok"));
 119                 ActionListener okListener = new ActionListener() {
 120                         public void actionPerformed(ActionEvent e)
 121                         {
 122                                 finish();
 123                         }
 124                 };
 125                 _okButton.addActionListener(okListener);
 126                 buttonPanel.add(_okButton);
 127                 JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
 128                 cancelButton.addActionListener(new ActionListener() {
 129                         public void actionPerformed(ActionEvent e)
 130                         {
 131                                 _dialog.dispose();
 132                         }
 133                 });
 134                 buttonPanel.add(cancelButton);
 135                 dialogPanel.add(buttonPanel, BorderLayout.SOUTH);
 136                 return dialogPanel;
 137         }
 138
 139
 140         /**
 141          * Get the initial values from the Config and set gui values accordingly
 142          */
 143         private void initValues()
 144         {
 145                 // Get values from config
 146                 try {
 147                         _serverRadios[Config.getMapServerIndex()].setSelected(true);
 148                 }
 149                 catch (ArrayIndexOutOfBoundsException e) {} // ignore
 150                 String url = Config.getMapServerUrl();
 151                 if (url != null) {_serverUrl.setText(url);}
 152                 // Choose default if none selected
 153                 if (getSelectedServer() < 0) {
 154                         _serverRadios[0].setSelected(true);
 155                 }
 156         }
 157
 158         /**
 159          * @return index of selected radio button, or -1 if none
 160          */
 161         private int getSelectedServer()
 162         {
 163                 // Loop over all four radios
 164                 for (int i=0; i<4; i++) {
 165                         if (_serverRadios[i].isSelected()) {return i;}
 166                 }
 167                 // None selected
 168                 return -1;
 169         }
 170
 171         /**
 172          * Enable or disable the OK button according to the selection
 173          */
 174         private void enableOK()
 175         {
 176                 int serverNum = getSelectedServer();
 177                 _okButton.setEnabled(inputOK());
 178                 _serverUrl.setEnabled(serverNum == OTHER_SERVER_NUM);
 179         }
 180
 181         /**
 182          * @return true if inputs are ok
 183          */
 184         private boolean inputOK()
 185         {
 186                 int serverNum = getSelectedServer();
 187                 return serverNum >= 0 && (serverNum != OTHER_SERVER_NUM || _serverUrl.getText().length() > 4);
 188         }
 189
 190         /**
 191          * Finish the dialog when OK pressed
 192          */
 193         private void finish()
 194         {
 195                 int serverNum = getSelectedServer();
 196                 if (!inputOK()) {serverNum = 0;}
 197                 Config.setMapServerIndex(serverNum);
 198                 Config.setMapServerUrl(_serverUrl.getText());
 199                 UpdateMessageBroker.informSubscribers(DataSubscriber.MAPSERVER_CHANGED);
 200                 _dialog.dispose();
 201         }
 202 }