Allow Repo to be a project.

src/main/java/eu/simstadt/regionchooser/RegionChooserBrowser.java

@@ -110,7 +110,6 @@ public Integer call() throws IOException, XPathParseException, NavException, Par
 
 
 		public void selectRepository() {
-			//FIXME: Allow project folders too. But don't silently fail if repo isn't really a repo
 			Preferences userPrefs = Preferences.userRoot().node("/eu/simstadt/desktop");
 
 			DirectoryChooser fileChooser = new DirectoryChooser();
@@ -135,7 +134,7 @@ private File selectSaveFileWithDialog(String project, String citygml, String suf
 			Stage mainStage = (Stage) RegionChooserBrowser.this.getScene().getWindow();
 			FileChooser fileChooser = new FileChooser();
 			fileChooser.setTitle("Save CITYGML ids");
-			if (project != null) {
+			if (project != null && !isRepoAProject()) {
 				fileChooser.setInitialDirectory(repo.resolve(project + ".proj").toFile());
 			} else {
 				fileChooser.setInitialDirectory(repo.toFile());
@@ -158,9 +157,22 @@ public void warning(String text) {
 			LOGGER.warning(text);
 		}
 
+		/*
+		 * NOTE: Users sometime select some_region.proj/ as a repository.
+		 * SimStadt won't show any project in this "repository", but RegionChooser shouldn't complain and
+		 * still be able to extract regions.
+		 */
+		private boolean isRepoAProject(){
+			return repo.toString().endsWith(".proj");
+		}
+
 		private Path citygmlPath(String project, String citygml) {
+			if (isRepoAProject()){
+				return repo.resolve(citygml);
+			} else {
 				return repo.resolve(project + ".proj").resolve(citygml);
 			}
+		}
 
 	}