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

[fw/altos] / altosui / AltosUIPreferencesBackend.java

diff --git a/altosui/AltosUIPreferencesBackend.java b/altosui/AltosUIPreferencesBackend.java
new file mode 100644 (file)
index 0000000..16844f3
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+++ 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");
+               }
+       }
+
+}
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