/**
   * @param url the "file:" URL of the file to remove from the file store. Only files in the
   *     writable World Wind disk cache or temp file directory are removed by this method.
   * @throws IllegalArgumentException if <code>url</code> is null
   */
  @SuppressWarnings({"ResultOfMethodCallIgnored"})
  public void removeFile(java.net.URL url) {
    if (url == null) {
      String msg = Logging.getMessage("nullValue.URLIsNull");
      Logging.logger().severe(msg);
      throw new IllegalArgumentException(msg);
    }

    try {
      java.io.File file = new java.io.File(url.toURI());

      // This block of code must be synchronized for proper operation. A thread may check that the
      // file exists,
      // and become immediately suspended. A second thread may then delete that file. When the first
      // thread
      // wakes up, file.delete() fails.
      synchronized (this.fileLock) {
        if (file.exists()) {
          // Don't remove files outside the cache or temp directory.
          String parent = file.getParent();
          if (!(parent.startsWith(this.getWriteLocation().getPath())
              || parent.startsWith(Configuration.getSystemTempDirectory()))) return;

          file.delete();
        }
      }
    } catch (java.net.URISyntaxException e) {
      Logging.logger()
          .log(
              Level.SEVERE,
              Logging.getMessage("FileStore.ExceptionRemovingFile", url.toString()),
              e);
    }
  }
  /**
   * @param placeNameServiceSet the set of PlaceNameService objects that PlaceNameLayer will render.
   * @throws IllegalArgumentException if {@link
   *     gov.nasa.worldwind.layers.placename.PlaceNameServiceSet} is null
   */
  public PlaceNameLayer(PlaceNameServiceSet placeNameServiceSet) {
    if (placeNameServiceSet == null) {
      String message = Logging.getMessage("nullValue.PlaceNameServiceSetIsNull");
      Logging.logger().fine(message);
      throw new IllegalArgumentException(message);
    }

    //
    this.placeNameServiceSet = placeNameServiceSet.deepCopy();
    for (int i = 0; i < this.placeNameServiceSet.getServiceCount(); i++) {
      // todo do this for long as well and pick min
      int calc1 =
          (int)
              (PlaceNameService.TILING_SECTOR.getDeltaLatDegrees()
                  / this.placeNameServiceSet
                      .getService(i)
                      .getTileDelta()
                      .getLatitude()
                      .getDegrees());
      int numLevels = (int) Math.log(calc1);
      navTiles.add(
          new NavigationTile(
              this.placeNameServiceSet.getService(i),
              PlaceNameService.TILING_SECTOR,
              numLevels,
              "top"));
    }

    if (!WorldWind.getMemoryCacheSet().containsCache(Tile.class.getName())) {
      long size = Configuration.getLongValue(AVKey.PLACENAME_LAYER_CACHE_SIZE, 2000000L);
      MemoryCache cache = new BasicMemoryCache((long) (0.85 * size), size);
      cache.setName("Placename Tiles");
      WorldWind.getMemoryCacheSet().addCache(Tile.class.getName(), cache);
    }
  }
 protected static String determineAllUserLocation() {
   if (gov.nasa.worldwind.Configuration.isMacOS()) {
     return "/Library/Caches";
   } else if (gov.nasa.worldwind.Configuration.isWindowsOS()) {
     String path = System.getenv("ALLUSERSPROFILE");
     if (path == null) {
       Logging.logger().severe("generic.AllUsersWindowsProfileNotKnown");
       return null;
     }
     return path + (Configuration.isWindows7OS() ? "" : "\\Application Data");
   } else if (gov.nasa.worldwind.Configuration.isLinuxOS()
       || gov.nasa.worldwind.Configuration.isUnixOS()
       || gov.nasa.worldwind.Configuration.isSolarisOS()) {
     return "/var/cache/";
   } else {
     Logging.logger().warning("generic.UnknownOperatingSystem");
     return null;
   }
 }