altoslib/altosui: begin moving preferences "backend" into interface

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

1 files changed, 57 insertions, 73 deletions

diff --git a/altoslib/AltosPreferences.java b/altoslib/AltosPreferences.java
index 0e7b2bd3..ef30f8e9 100644
--- a/altoslib/AltosPreferences.java
+++ b/altoslib/AltosPreferences.java
@@ -19,11 +19,10 @@ package org.altusmetrum.AltosLib;
 
 import java.io.*;
 import java.util.*;
-import java.util.prefs.*;
 import javax.swing.filechooser.FileSystemView;
 
 public class AltosPreferences {
-	public static Preferences preferences;
+	public static AltosPreferencesBackend backend = null;
 
 	/* logdir preference name */
 	public final static String logdirPreference = "LOGDIR";
@@ -100,13 +99,10 @@ public class AltosPreferences {
 	public static AltosFrequency[] load_common_frequencies() {
 		AltosFrequency[] frequencies = null;
 		boolean	existing = false;
-		try {
-			existing = preferences.nodeExists(common_frequencies_node_name);
-		} catch (BackingStoreException be) {
-			existing = false;
-		}
+		existing = backend.nodeExists(common_frequencies_node_name);
+
 		if (existing) {
-			Preferences	node = preferences.node(common_frequencies_node_name);
+			AltosPreferencesBackend	node = backend.node(common_frequencies_node_name);
 			int		count = node.getInt(frequency_count, 0);
 
 			frequencies = new AltosFrequency[count];
@@ -115,7 +111,7 @@ public class AltosPreferences {
 				String	description;
 
 				frequency = node.getDouble(String.format(frequency_format, i), 0.0);
-				description = node.get(String.format(description_format, i), null);
+				description = node.getString(String.format(description_format, i), null);
 				frequencies[i] = new AltosFrequency(frequency, description);
 			}
 		} else {
@@ -129,12 +125,12 @@ public class AltosPreferences {
 	}
 
 	public static void save_common_frequencies(AltosFrequency[] frequencies) {
-		Preferences	node = preferences.node(common_frequencies_node_name);
+		AltosPreferencesBackend	node = backend.node(common_frequencies_node_name);
 
 		node.putInt(frequency_count, frequencies.length);
 		for (int i = 0; i < frequencies.length; i++) {
 			node.putDouble(String.format(frequency_format, i), frequencies[i].frequency);
-			node.put(String.format(description_format, i), frequencies[i].description);
+			node.putString(String.format(description_format, i), frequencies[i].description);
 		}
 	}
 	public static int launcher_serial;
@@ -142,10 +138,10 @@ public class AltosPreferences {
 	public static int launcher_channel;
 
 	public static void init() {
-		preferences = Preferences.userRoot().node("/org/altusmetrum/altosui");
+		//preferences = Preferences.userRoot().node("/org/altusmetrum/altosui");
 
 		/* Initialize logdir from preferences */
-		String logdir_string = preferences.get(logdirPreference, null);
+		String logdir_string = backend.getString(logdirPreference, null);
 		if (logdir_string != null)
 			logdir = new File(logdir_string);
 		else {
@@ -162,17 +158,17 @@ public class AltosPreferences {
 
 		telemetries = new Hashtable<Integer,Integer>();
 
-		voice = preferences.getBoolean(voicePreference, true);
+		voice = backend.getBoolean(voicePreference, true);
 
-		callsign = preferences.get(callsignPreference,"N0CALL");
+		callsign = backend.getString(callsignPreference,"N0CALL");
 
-		scanning_telemetry = preferences.getInt(scanningTelemetryPreference,(1 << AltosLib.ao_telemetry_standard));
+		scanning_telemetry = backend.getInt(scanningTelemetryPreference,(1 << AltosLib.ao_telemetry_standard));
 
-		launcher_serial = preferences.getInt(launcherSerialPreference, 0);
+		launcher_serial = backend.getInt(launcherSerialPreference, 0);
 
-		launcher_channel = preferences.getInt(launcherChannelPreference, 0);
+		launcher_channel = backend.getInt(launcherChannelPreference, 0);
 
-		String firmwaredir_string = preferences.get(firmwaredirPreference, null);
+		String firmwaredir_string = backend.getString(firmwaredirPreference, null);
 		if (firmwaredir_string != null)
 			firmwaredir = new File(firmwaredir_string);
 		else
@@ -180,65 +176,53 @@ public class AltosPreferences {
 
 		common_frequencies = load_common_frequencies();
 
-		AltosConvert.imperial_units = preferences.getBoolean(unitsPreference, false);
+		AltosConvert.imperial_units = backend.getBoolean(unitsPreference, false);
 	}
 
 	static { init(); }
 
 	public static void flush_preferences() {
-		try {
-			preferences.flush();
-		} catch (BackingStoreException ee) {
-/*
-			if (component != null)
-				JOptionPane.showMessageDialog(component,
-							      preferences.absolutePath(),
-							      "Cannot save prefernces",
-							      JOptionPane.ERROR_MESSAGE);
-			else
-*/
-				System.err.printf("Cannot save preferences\n");
-		}
+		backend.flush();
 	}
 
 	public static void set_logdir(File new_logdir) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			logdir = new_logdir;
 			mapdir = new File(logdir, "maps");
 			if (!mapdir.exists())
 				mapdir.mkdirs();
-			preferences.put(logdirPreference, logdir.getPath());
+			backend.putString(logdirPreference, logdir.getPath());
 			flush_preferences();
 		}
 	}
 
 	public static File logdir() {
-		synchronized (preferences) {
+		synchronized (backend) {
 			return logdir;
 		}
 	}
 
 	public static File mapdir() {
-		synchronized (preferences) {
+		synchronized (backend) {
 			return mapdir;
 		}
 	}
 
 	public static void set_frequency(int serial, double new_frequency) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			frequencies.put(serial, new_frequency);
-			preferences.putDouble(String.format(frequencyPreferenceFormat, serial), new_frequency);
+			backend.putDouble(String.format(frequencyPreferenceFormat, serial), new_frequency);
 			flush_preferences();
 		}
 	}
 
 	public static double frequency(int serial) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			if (frequencies.containsKey(serial))
 				return frequencies.get(serial);
-			double frequency = preferences.getDouble(String.format(frequencyPreferenceFormat, serial), 0);
+			double frequency = backend.getDouble(String.format(frequencyPreferenceFormat, serial), 0);
 			if (frequency == 0.0) {
-				int channel = preferences.getInt(String.format(channelPreferenceFormat, serial), 0);
+				int channel = backend.getInt(String.format(channelPreferenceFormat, serial), 0);
 				frequency = AltosConvert.radio_channel_to_frequency(channel);
 			}
 			frequencies.put(serial, frequency);
@@ -247,122 +231,122 @@ public class AltosPreferences {
 	}
 
 	public static void set_telemetry(int serial, int new_telemetry) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			telemetries.put(serial, new_telemetry);
-			preferences.putInt(String.format(telemetryPreferenceFormat, serial), new_telemetry);
+			backend.putInt(String.format(telemetryPreferenceFormat, serial), new_telemetry);
 			flush_preferences();
 		}
 	}
 
 	public static int telemetry(int serial) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			if (telemetries.containsKey(serial))
 				return telemetries.get(serial);
-			int telemetry = preferences.getInt(String.format(telemetryPreferenceFormat, serial),
-							   AltosLib.ao_telemetry_standard);
+			int telemetry = backend.getInt(String.format(telemetryPreferenceFormat, serial),
+						   AltosLib.ao_telemetry_standard);
 			telemetries.put(serial, telemetry);
 			return telemetry;
 		}
 	}
 
 	public static void set_scanning_telemetry(int new_scanning_telemetry) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			scanning_telemetry = new_scanning_telemetry;
-			preferences.putInt(scanningTelemetryPreference, scanning_telemetry);
+			backend.putInt(scanningTelemetryPreference, scanning_telemetry);
 			flush_preferences();
 		}
 	}
 
 	public static int scanning_telemetry() {
-		synchronized (preferences) {
+		synchronized (backend) {
 			return scanning_telemetry;
 		}
 	}
 
 	public static void set_voice(boolean new_voice) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			voice = new_voice;
-			preferences.putBoolean(voicePreference, voice);
+			backend.putBoolean(voicePreference, voice);
 			flush_preferences();
 		}
 	}
 
 	public static boolean voice() {
-		synchronized (preferences) {
+		synchronized (backend) {
 			return voice;
 		}
 	}
 
 	public static void set_callsign(String new_callsign) {
-		synchronized(preferences) {
+		synchronized(backend) {
 			callsign = new_callsign;
-			preferences.put(callsignPreference, callsign);
+			backend.putString(callsignPreference, callsign);
 			flush_preferences();
 		}
 	}
 
 	public static String callsign() {
-		synchronized(preferences) {
+		synchronized(backend) {
 			return callsign;
 		}
 	}
 
 	public static void set_firmwaredir(File new_firmwaredir) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			firmwaredir = new_firmwaredir;
-			preferences.put(firmwaredirPreference, firmwaredir.getPath());
+			backend.putString(firmwaredirPreference, firmwaredir.getPath());
 			flush_preferences();
 		}
 	}
 
 	public static File firmwaredir() {
-		synchronized (preferences) {
+		synchronized (backend) {
 			return firmwaredir;
 		}
 	}
 
 	public static void set_launcher_serial(int new_launcher_serial) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			launcher_serial = new_launcher_serial;
-			preferences.putInt(launcherSerialPreference, launcher_serial);
+			backend.putInt(launcherSerialPreference, launcher_serial);
 			flush_preferences();
 		}
 	}
 
 	public static int launcher_serial() {
-		synchronized (preferences) {
+		synchronized (backend) {
 			return launcher_serial;
 		}
 	}
 
 	public static void set_launcher_channel(int new_launcher_channel) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			launcher_channel = new_launcher_channel;
-			preferences.putInt(launcherChannelPreference, launcher_channel);
+			backend.putInt(launcherChannelPreference, launcher_channel);
 			flush_preferences();
 		}
 	}
 
 	public static int launcher_channel() {
-		synchronized (preferences) {
+		synchronized (backend) {
 			return launcher_channel;
 		}
 	}
 	
-	public static Preferences bt_devices() {
-		synchronized (preferences) {
-			return preferences.node("bt_devices");
+	public static AltosPreferencesBackend bt_devices() {
+		synchronized (backend) {
+			return backend.node("bt_devices");
 		}
 	}
 
 	public static AltosFrequency[] common_frequencies() {
-		synchronized (preferences) {
+		synchronized (backend) {
 			return common_frequencies;
 		}
 	}
 
 	public static void set_common_frequencies(AltosFrequency[] frequencies) {
-		synchronized(preferences) {
+		synchronized(backend) {
 			common_frequencies = frequencies;
 			save_common_frequencies(frequencies);
 			flush_preferences();
@@ -388,15 +372,15 @@ public class AltosPreferences {
 	}
 
 	public static boolean imperial_units() {
-		synchronized(preferences) {
+		synchronized(backend) {
 			return AltosConvert.imperial_units;
 		}
 	}
 
 	public static void set_imperial_units(boolean imperial_units) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			AltosConvert.imperial_units = imperial_units;
-			preferences.putBoolean(unitsPreference, imperial_units);
+			backend.putBoolean(unitsPreference, imperial_units);
 			flush_preferences();
 		}
 	}