tim/prune/gui/map/MapSourceLibrary.java

   1 package tim.prune.gui.map;
   2
   3 import java.util.ArrayList;
   4
   5 import tim.prune.config.Config;
   6
   7 /**
   8  * Class to hold a library for all the map sources
   9  * and provide access to each one
  10  */
  11 public abstract class MapSourceLibrary
  12 {
  13         /** list of map sources */
  14         private static ArrayList<MapSource> _sourceList = null;
  15         /** Number of fixed sources */
  16         private static int _numFixedSources = 0;
  17
  18         // Static block to initialise source list
  19         static
  20         {
  21                 _sourceList = new ArrayList<MapSource>();
  22                 addFixedSources();
  23                 _numFixedSources = _sourceList.size();
  24                 addConfigSources();
  25         }
  26
  27         /** Private constructor to block instantiation */
  28         private MapSourceLibrary() {}
  29
  30
  31         /** @return number of fixed sources which shouldn't be deleted */
  32         public static int getNumFixedSources() {
  33                 return _numFixedSources;
  34         }
  35
  36         /**
  37          * Initialise source list by adding bare minimum
  38          */
  39         private static void addFixedSources()
  40         {
  41                 _sourceList.add(new OsmMapSource("Mapnik", "http://tile.openstreetmap.org/"));
  42                 _sourceList.add(new OsmMapSource("Osma", "http://tah.openstreetmap.org/Tiles/tile/"));
  43                 _sourceList.add(new OsmMapSource("Cyclemap", "http://andy.sandbox.cloudmade.com/tiles/cycle/"));
  44                 _sourceList.add(new OsmMapSource("Reitkarte", "http://topo.geofabrik.de/hills/",
  45                         "http://topo.openstreetmap.de/topo/", 18));
  46                 _sourceList.add(new MffMapSource("Mapsforfree", "http://maps-for-free.com/layer/relief/", ".jpg",
  47                         "http://maps-for-free.com/layer/water/", ".gif", 11));
  48                 _sourceList.add(new CloudmadeMapSource("Pale Dawn", "998", 18));
  49         }
  50
  51         /**
  52          * Add custom sources from Config to the library
  53          */
  54         private static void addConfigSources()
  55         {
  56                 String configString = Config.getConfigString(Config.KEY_MAPSOURCE_LIST);
  57                 if (configString != null && configString.length() > 10)
  58                 {
  59                         // Loop over sources in string, separated by vertical bars
  60                         int splitPos = configString.indexOf('|');
  61                         while (splitPos > 0)
  62                         {
  63                                 String sourceString = configString.substring(0, splitPos);
  64                                 MapSource source = OsmMapSource.fromConfig(sourceString);
  65                                 if (source == null) {source = CloudmadeMapSource.fromConfig(sourceString);}
  66                                 if (source != null) {
  67                                         _sourceList.add(source);
  68                                 }
  69                                 configString = configString.substring(splitPos+1);
  70                                 splitPos = configString.indexOf('|');
  71                         }
  72                 }
  73         }
  74
  75         /**
  76          * @return current number of sources
  77          */
  78         public static int getNumSources() {
  79                 return _sourceList.size();
  80         }
  81
  82         /**
  83          * Add the given MapSource to the list (at the end)
  84          * @param inSource MapSource object
  85          */
  86         public static void addSource(MapSource inSource) {
  87                 // Check whether source is already there?  Check whether valid?
  88                 _sourceList.add(inSource);
  89         }
  90
  91         /**
  92          * @param inIndex source index number
  93          * @return corresponding map source object
  94          */
  95         public static MapSource getSource(int inIndex)
  96         {
  97                 // Check whether within range
  98                 if (inIndex < 0 || inIndex >= _sourceList.size()) {return null;}
  99                 return _sourceList.get(inIndex);
 100         }
 101
 102         /**
 103          * Delete the specified source
 104          * @param inIndex index of source to delete
 105          */
 106         public static void deleteSource(int inIndex)
 107         {
 108                 if (inIndex >= _numFixedSources) {
 109                         _sourceList.remove(inIndex);
 110                 }
 111         }
 112
 113         /**
 114          * Check whether the given name already exists in the library (case-insensitive)
 115          * @param inName name to check
 116          * @return true if already exists, false otherwise
 117          */
 118         public static boolean hasSourceName(String inName)
 119         {
 120                 if (inName == null) {return false;}
 121                 String checkName = inName.toLowerCase().trim();
 122                 for (int i=0; i<getNumSources(); i++)
 123                 {
 124                         String name = getSource(i).getName().toLowerCase();
 125                         if (name.equals(checkName)) {return true;}
 126                 }
 127                 return false;
 128         }
 129
 130         /**
 131          * @return String containing all custom-added sources as a |-separated list
 132          */
 133         public static String getConfigString()
 134         {
 135                 StringBuilder builder = new StringBuilder();
 136                 for (int i=getNumFixedSources(); i<getNumSources(); i++) {
 137                         builder.append(getSource(i).getConfigString()).append('|');
 138                 }
 139                 return builder.toString();
 140         }
 141 }