Add a subtitle to AddDirectoryActivity containing the currently displayed folder's path.

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/activities/AddDirectoryActivity.java

@@ -24,6 +24,7 @@ public class AddDirectoryActivity extends Activity implements FileAdapter.FileCl
 	public static final String KEY_CURRENT_PATH = BuildConfig.APPLICATION_ID + ".path";
 
 	private FileAdapter mAdapter;
+	private Toolbar mToolbar;
 
 	@Override
 	protected void onCreate(Bundle savedInstanceState)
@@ -32,8 +33,8 @@ public class AddDirectoryActivity extends Activity implements FileAdapter.FileCl
 
 		setContentView(R.layout.activity_add_directory);
 
-		Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_folder_list);
+		mToolbar = (Toolbar) findViewById(R.id.toolbar_folder_list);
-		setActionBar(toolbar);
+		setActionBar(mToolbar);
 
 		RecyclerView recyclerView = (RecyclerView) findViewById(R.id.list_files);
 
@@ -46,7 +47,8 @@ public class AddDirectoryActivity extends Activity implements FileAdapter.FileCl
 		if (savedInstanceState == null)
 		{
 			path = Environment.getExternalStorageDirectory().getPath();
-		} else
+		}
+		else
 		{
 			// Get the path we were looking at before we rotated.
 			path = savedInstanceState.getString(KEY_CURRENT_PATH);
@@ -71,7 +73,7 @@ public class AddDirectoryActivity extends Activity implements FileAdapter.FileCl
 		switch (item.getItemId())
 		{
 			case R.id.menu_up_one_level:
-				mAdapter.setPath(mAdapter.getPath() + "/..");
+				mAdapter.upOneLevel();
 				break;
 		}
 
@@ -101,4 +103,10 @@ public class AddDirectoryActivity extends Activity implements FileAdapter.FileCl
 
 		finish();
 	}
+
+	@Override
+	public void updateSubtitle(String path)
+	{
+		mToolbar.setSubtitle(path);
+	}
 }

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/activities/GameGridActivity.java

@@ -69,6 +69,8 @@ public final class GameGridActivity extends Activity
 			public void onClick(View view)
 			{
 				Intent fileChooser = new Intent(GameGridActivity.this, AddDirectoryActivity.class);
+
+				// The second argument to this method is read below in onActivityResult().
 				startActivityForResult(fileChooser, REQUEST_ADD_DIRECTORY);
 			}
 		});
@@ -85,9 +87,9 @@ public final class GameGridActivity extends Activity
 	/**
 	 * Callback from AddDirectoryActivity. Applies any changes necessary to the GameGridActivity.
 	 *
-	 * @param requestCode
+	 * @param requestCode An int describing whether the Activity that is returning did so successfully.
-	 * @param resultCode
+	 * @param resultCode An int describing what Activity is giving us this callback.
-	 * @param result
+	 * @param result The information the returning Activity is providing us.
 	 */
 	@Override
 	protected void onActivityResult(int requestCode, int resultCode, Intent result)
@@ -99,6 +101,7 @@ public final class GameGridActivity extends Activity
 			// other activities might use this callback in the future (don't forget to change Javadoc!)
 			if (requestCode == REQUEST_ADD_DIRECTORY)
 			{
+				// Get the path the user selected in AddDirectoryActivity.
 				String path = result.getStringExtra(AddDirectoryActivity.KEY_CURRENT_PATH);
 
 				// Store this path as a preference.

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/adapters/FileAdapter.java

@@ -26,12 +26,14 @@ public class FileAdapter extends RecyclerView.Adapter<FileViewHolder> implements
 	 * Initializes the dataset to be displayed, and associates the Adapter with the
 	 * Activity as an event listener.
 	 *
-	 * @param gameList
+	 * @param path A String containing the path to the directory to be shown by this Adapter.
+	 * @param listener An Activity that can respond to callbacks from this Adapter.
 	 */
 	public FileAdapter(String path, FileClickListener listener)
 	{
 		mFileList = generateFileList(new File(path));
 		mListener = listener;
+		mListener.updateSubtitle(path);
 	}
 
 	/**
@@ -107,12 +109,12 @@ public class FileAdapter extends RecyclerView.Adapter<FileViewHolder> implements
 	 * When a file is clicked, determine if it is a directory; if it is, show that new directory's
 	 * contents. If it is not, end the activity successfully.
 	 *
-	 * @param view
+	 * @param view The View representing the file the user clicked on.
 	 */
 	@Override
 	public void onClick(final View view)
 	{
-		String path = (String) view.getTag();
+		final String path = (String) view.getTag();
 
 		File clickedFile = new File(path);
 
@@ -135,6 +137,7 @@ public class FileAdapter extends RecyclerView.Adapter<FileViewHolder> implements
 					{
 						mFileList = fileList;
 						notifyDataSetChanged();
+						mListener.updateSubtitle(path);
 					}
 				}, 200);
 			}
@@ -148,7 +151,7 @@ public class FileAdapter extends RecyclerView.Adapter<FileViewHolder> implements
 	/**
 	 * For a given directory, return a list of Files it contains.
 	 *
-	 * @param directory
+	 * @param directory A File representing the directory that should have its contents displayed.
 	 * @return
 	 */
 	private ArrayList<FileListItem> generateFileList(File directory)
@@ -176,26 +179,32 @@ public class FileAdapter extends RecyclerView.Adapter<FileViewHolder> implements
 		return mPath;
 	}
 
-	/**
-	 * Mostly just allows the activity's menu option to kick us up a level in the directory
-	 * structure.
-	 *
-	 * @param path
-	 */
 	public void setPath(String path)
 	{
-		mPath = path;
+		File directory = new File(path);
-		File parentDirectory = new File(path);
+
+		mFileList = generateFileList(directory);
+		notifyDataSetChanged();
+		mListener.updateSubtitle(path);
+	}
+
+	public void upOneLevel()
+	{
+		File currentDirectory = new File(mPath);
+		File parentDirectory = currentDirectory.getParentFile();
 
 		mFileList = generateFileList(parentDirectory);
 		notifyDataSetChanged();
+		mListener.updateSubtitle(mPath);
 	}
 
 	/**
-	 * Callback for when the user wants to add the visible directory to the library.
+	 * Callback to the containing Activity.
 	 */
 	public interface FileClickListener
 	{
 		void finishSuccessfully();
+
+		void updateSubtitle(String path);
 	}
 }