altos{lib,ui,droid}: move OS specific code out of altoslib

This is to allow the usage of AltosLog on Android - no swing, so
we need to push the "home directory" code used to pick a default
telemetry logging path - using the PreferencesBackend interface
for now.

Signed-off-by: Mike Beattie <mike@ethernal.org>

4 files changed, 17 insertions, 3 deletions

diff --git a/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferences.java b/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferences.java
index b8487d07..3b4bdcf8 100644
--- a/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferences.java
+++ b/altosdroid/src/org/altusmetrum/AltosDroid/AltosDroidPreferences.java
@@ -17,9 +17,12 @@
 
 package org.altusmetrum.AltosDroid;
 
+import java.io.File;
 import java.util.Map;
 import android.content.Context;
 import android.content.SharedPreferences;
+import android.os.Environment;
+
 import org.altusmetrum.AltosLib.*;
 
 public class AltosDroidPreferences implements AltosPreferencesBackend {
@@ -92,4 +95,7 @@ public class AltosDroidPreferences implements AltosPreferencesBackend {
 		editor.apply();
 	}
 
+	public File homeDirectory() {
+		return Environment.getExternalStorageDirectory();
+	}
 }
diff --git a/altoslib/AltosPreferences.java b/altoslib/AltosPreferences.java
index a82ea3f6..47196d6e 100644
--- a/altoslib/AltosPreferences.java
+++ b/altoslib/AltosPreferences.java
@@ -19,7 +19,6 @@ package org.altusmetrum.AltosLib;
 
 import java.io.*;
 import java.util.*;
-import javax.swing.filechooser.FileSystemView;
 
 public class AltosPreferences {
 	public static AltosPreferencesBackend backend = null;
@@ -145,8 +144,7 @@ public class AltosPreferences {
 		if (logdir_string != null)
 			logdir = new File(logdir_string);
 		else {
-			/* Use the file system view default directory */
-			logdir = new File(FileSystemView.getFileSystemView().getDefaultDirectory(), logdirName);
+			logdir = new File(backend.homeDirectory(), logdirName);
 			if (!logdir.exists())
 				logdir.mkdirs();
 		}
diff --git a/altoslib/AltosPreferencesBackend.java b/altoslib/AltosPreferencesBackend.java
index 3fc4b0aa..a1184c0b 100644
--- a/altoslib/AltosPreferencesBackend.java
+++ b/altoslib/AltosPreferencesBackend.java
@@ -17,6 +17,8 @@
 
 package org.altusmetrum.AltosLib;
 
+import java.io.File;
+
 public interface AltosPreferencesBackend {
 
 	public String  getString(String key, String def);
@@ -38,4 +40,6 @@ public interface AltosPreferencesBackend {
 	public void    remove(String key);
 
 	public void    flush();
+
+	public File homeDirectory();
 }
diff --git a/altosui/AltosUIPreferencesBackend.java b/altosui/AltosUIPreferencesBackend.java
index 210dcb8b..3131fd32 100644
--- a/altosui/AltosUIPreferencesBackend.java
+++ b/altosui/AltosUIPreferencesBackend.java
@@ -17,8 +17,10 @@
 
 package altosui;
 
+import java.io.File;
 import java.util.prefs.*;
 import org.altusmetrum.AltosLib.*;
+import javax.swing.filechooser.FileSystemView;
 
 public class AltosUIPreferencesBackend implements AltosPreferencesBackend {
 
@@ -92,4 +94,8 @@ public class AltosUIPreferencesBackend implements AltosPreferencesBackend {
 		}
 	}
 
+	public File homeDirectory() {
+		/* Use the file system view default directory */
+		return FileSystemView.getFileSystemView().getDefaultDirectory();
+	}
 }