Version 7, February 2009

[GpsPrune.git] / tim / prune / gui / map / MapTileConfig.java

diff --git a/tim/prune/gui/map/MapTileConfig.java b/tim/prune/gui/map/MapTileConfig.java
new file mode 100644 (file)
index 0000000..762baf4
--- /dev/null
+++ b/tim/prune/gui/map/MapTileConfig.java
@@ -0,0 +1,92 @@
+package tim.prune.gui.map;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import tim.prune.Config;
+
+/**
+ * Class to hold the config for the map tiles
+ * and retrieve the correct URL prefix
+ */
+public class MapTileConfig
+{
+       /** Index of map server */
+       private int _index = 0;
+       /** Url for other */
+       private String _url = null;
+
+       /** server urls for known maps */
+       private static final String[] SERVER_URLS = {
+               "http://tile.openstreetmap.org/", // mapnik
+               "http://tah.openstreetmap.org/Tiles/tile/",      // osma
+               "http://andy.sandbox.cloudmade.com/tiles/cycle/" // cyclemap
+       };
+       /** Index of 'other' server with freeform url */
+       private static final int OTHER_SERVER_NUM = 3;
+
+
+       /**
+        * Default constructor using Config
+        */
+       public MapTileConfig()
+       {
+               _index = Config.getMapServerIndex();
+               _url = fixUrl(Config.getMapServerUrl());
+               // reset index wrong or if other url too short
+               if (_index < 0 || _index > OTHER_SERVER_NUM ||
+                       (_index == OTHER_SERVER_NUM && (_url == null || _url.length() < 5)))
+               {
+                       _index = 0;
+               }
+       }
+
+       /**
+        * @return url
+        */
+       public String getUrl()
+       {
+               if (_index == OTHER_SERVER_NUM) {return _url;}
+               return SERVER_URLS[_index];
+       }
+
+       /**
+        * Checks the given url for having the right prefix and trailing slash
+        * @param inUrl url to check
+        * @return validated url with correct prefix and trailing slash, or null
+        */
+       private static String fixUrl(String inUrl)
+       {
+               if (inUrl == null || inUrl.equals("")) {return null;}
+               String url = inUrl;
+               // check prefix
+               try {
+                       new URL(url);
+               }
+               catch (MalformedURLException e) {
+                       // add the http protocol
+                       url = "http://" + url;
+               }
+               // check trailing /
+               if (!url.endsWith("/")) {
+                       url = url + "/";
+               }
+               return url;
+       }
+
+       /**
+        * @param inOther other config object
+        * @return true if the objects are exactly the same
+        */
+       public boolean equals(MapTileConfig inOther)
+       {
+               // Other object must be non-null and must have same index
+               if (inOther == null || inOther._index != _index) {return false;}
+               // Check url if other selected
+               if (_index == OTHER_SERVER_NUM) {
+                       return inOther._url.equals(_url);
+               }
+               // Not other so must match
+               return true;
+       }
+}