1 files changed, 21 insertions, 1 deletions
diff --git a/main/src/cgeo/geocaching/apps/cache/WhereYouGoApp.java b/main/src/cgeo/geocaching/apps/cache/WhereYouGoApp.java
index 79a5975..b2a2cad 100644
--- a/main/src/cgeo/geocaching/apps/cache/WhereYouGoApp.java
+++ b/main/src/cgeo/geocaching/apps/cache/WhereYouGoApp.java
@@ -3,14 +3,34 @@ package cgeo.geocaching.apps.cache;
 import cgeo.geocaching.Geocache;
 import cgeo.geocaching.R;
 import cgeo.geocaching.enumerations.CacheType;
+import cgeo.geocaching.utils.TextUtils;
+
+import org.apache.commons.lang3.StringUtils;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+
+import java.util.regex.Pattern;
 
 public class WhereYouGoApp extends AbstractGeneralApp {
+    private static final Pattern PATTERN_CARTRIDGE = Pattern.compile("(" + Pattern.quote("http://www.wherigo.com/cartridge/details.aspx?") + ".*?)" + Pattern.quote("\""));
+
     public WhereYouGoApp() {
         super(getString(R.string.cache_menu_whereyougo), R.id.cache_app_whereyougo, "menion.android.whereyougo");
     }
 
     @Override
     public boolean isEnabled(Geocache cache) {
-        return cache.getType() == CacheType.WHERIGO;
+        return cache.getType() == CacheType.WHERIGO && StringUtils.isNotEmpty(getWhereIGoUrl(cache));
+    }
+
+    @Override
+    public void navigate(Activity activity, Geocache cache) {
+        activity.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(getWhereIGoUrl(cache))));
+    }
+
+    protected static String getWhereIGoUrl(Geocache cache) {
+        return TextUtils.getMatch(cache.getDescription(), PATTERN_CARTRIDGE, null);
     }
 }