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

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

4 files changed, 194 insertions, 88 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();
 		}
 	}
diff --git a/altoslib/AltosPreferencesBackend.java b/altoslib/AltosPreferencesBackend.java
new file mode 100644
index 00000000..a8cfb31b
--- /dev/null
+++ b/altoslib/AltosPreferencesBackend.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright © 2010 Mike Beattie <mike@ethernal.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosLib;
+
+public interface AltosPreferencesBackend {
+
+	public String  getString(String key, String def);
+	public void    putString(String key, String value);
+
+	public int     getInt(String key, int def);
+	public void    putInt(String key, int value);
+
+	public double  getDouble(String key, double def);
+	public void    putDouble(String key, double value);
+
+	public boolean getBoolean(String key, boolean def);
+	public void    putBoolean(String key, boolean value);
+
+	public boolean nodeExists(String key);
+	public AltosPreferencesBackend node(String key);
+
+	public void    flush();
+}
diff --git a/altosui/AltosUIPreferences.java b/altosui/AltosUIPreferences.java
index a026d123..03e8e129 100644
--- a/altosui/AltosUIPreferences.java
+++ b/altosui/AltosUIPreferences.java
@@ -48,12 +48,12 @@ public class AltosUIPreferences extends AltosPreferences {
 	public static void init() {
 		font_listeners = new LinkedList<AltosFontListener>();
 
-		font_size = preferences.getInt(fontSizePreference, Altos.font_size_medium);
+		font_size = backend.getInt(fontSizePreference, Altos.font_size_medium);
 		Altos.set_fonts(font_size);
-		look_and_feel = preferences.get(lookAndFeelPreference, UIManager.getSystemLookAndFeelClassName());
+		look_and_feel = backend.getString(lookAndFeelPreference, UIManager.getSystemLookAndFeelClassName());
 
 		ui_listeners = new LinkedList<AltosUIListener>();
-		serial_debug = preferences.getBoolean(serialDebugPreference, false);
+		serial_debug = backend.getBoolean(serialDebugPreference, false);
 		AltosLink.set_debug(serial_debug);
 	}
 
@@ -107,9 +107,9 @@ public class AltosUIPreferences extends AltosPreferences {
 	}
 
 	public static void set_font_size(int new_font_size) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			font_size = new_font_size;
-			preferences.putInt(fontSizePreference, font_size);
+			backend.putInt(fontSizePreference, font_size);
 			flush_preferences();
 			Altos.set_fonts(font_size);
 			for (AltosFontListener l : font_listeners)
@@ -118,13 +118,13 @@ public class AltosUIPreferences extends AltosPreferences {
 	}
 
 	public static void register_font_listener(AltosFontListener l) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			font_listeners.add(l);
 		}
 	}
 
 	public static void unregister_font_listener(AltosFontListener l) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			font_listeners.remove(l);
 		}
 	}
@@ -134,9 +134,9 @@ public class AltosUIPreferences extends AltosPreferences {
 			UIManager.setLookAndFeel(new_look_and_feel);
 		} catch (Exception e) {
 		}
-		synchronized(preferences) {
+		synchronized(backend) {
 			look_and_feel = new_look_and_feel;
-			preferences.put(lookAndFeelPreference, look_and_feel);
+			backend.putString(lookAndFeelPreference, look_and_feel);
 			flush_preferences();
 			for (AltosUIListener l : ui_listeners)
 				l.ui_changed(look_and_feel);
@@ -150,21 +150,21 @@ public class AltosUIPreferences extends AltosPreferences {
 	}
 
 	public static void register_ui_listener(AltosUIListener l) {
-		synchronized(preferences) {
+		synchronized(backend) {
 			ui_listeners.add(l);
 		}
 	}
 
 	public static void unregister_ui_listener(AltosUIListener l) {
-		synchronized (preferences) {
+		synchronized (backend) {
 			ui_listeners.remove(l);
 		}
 	}
 	public static void set_serial_debug(boolean new_serial_debug) {
-		AltosLink.set_debug(new_serial_debug);
-		synchronized (preferences) {
+		AltosLink.set_debug(serial_debug);
+		synchronized (backend) {
 			serial_debug = new_serial_debug;
-			preferences.putBoolean(serialDebugPreference, serial_debug);
+			backend.putBoolean(serialDebugPreference, serial_debug);
 			flush_preferences();
 		}
 	}
@@ -175,4 +175,4 @@ public class AltosUIPreferences extends AltosPreferences {
 		}
 	}
 
-}
\ No newline at end of file
+}
diff --git a/altosui/AltosUIPreferencesBackend.java b/altosui/AltosUIPreferencesBackend.java
new file mode 100644
index 00000000..16844f37
--- /dev/null
+++ b/altosui/AltosUIPreferencesBackend.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright © 2012 Mike Beattie <mike@ethernal.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package altosui;
+
+import java.text.*;
+import java.util.prefs.*;
+import org.altusmetrum.AltosLib.*;
+
+public class AltosUIPreferencesBackend implements AltosPreferencesBackend {
+
+	private Preferences _preferences = null;
+	
+	public AltosUIPreferencesBackend() {
+		_preferences = Preferences.userRoot().node("/org/altusmetrum/altosui");
+	}
+
+	public AltosUIPreferencesBackend(Preferences in_preferences) {
+		_preferences = in_preferences;
+	}
+
+	public String  getString(String key, String def) {
+		return _preferences.get(key, def)
+	}
+	public void    putString(String key, String value) {
+		_preferences.put(key, value);
+	}
+
+	public int     getInt(String key, int def) {
+		return _preferences.getInt(key, def);
+	}
+	public void    putInt(String key, int value) {
+		_preferences.putInt(key, value);
+	}
+
+	public double  getDouble(String key, double def) {
+		return _preferences.getDouble(key, def);
+	}
+	public void    putDouble(String key, double value) {
+		_preferences.putDouble(key, value);
+	}
+
+	public boolean getBoolean(String key, boolean def) {
+		return _preferences.getBoolean(key, def);
+	}
+	public void    putBoolean(String key, boolean value) {
+		_preferences.putBoolean(key, value);
+	}
+
+	public boolean nodeExists(String key) {
+		try {
+			return _preferences.nodeExists(key);
+		} catch (BackingStoreException be) {
+			return false;
+		}
+	}
+
+	public AltosPreferencesBackend node(String key) {
+		return new AltosUIPreferencesBackend(_preferences.node(key));
+	}
+
+	public void    flush() {
+		try {
+			_preferences.flush();
+		} catch (BackingStoreException ee) {
+			System.err.printf("Cannot save preferences\n");
+		}
+	}
+
+}
\ No newline at end of file