preference getters

src/org/geometerplus/android/fbreader/api/ApiObject.java

@@ -4,6 +4,9 @@
 
 package org.geometerplus.android.fbreader.api;
 
+import java.util.List;
+import java.util.ArrayList;
+
 import android.os.Parcel;
 import android.os.Parcelable;
 
@@ -117,6 +120,14 @@ public abstract class ApiObject implements Parcelable {
 		return new String(value);
 	}
 
+	static List<ApiObject> envelope(List<java.lang.String> values) {
+		final ArrayList<ApiObject> objects = new ArrayList<ApiObject>(values.size());
+		for (java.lang.String v : values) {
+			objects.add(new String(v));
+		}
+		return objects;
+	}
+
 	abstract protected int type();
 
 	public int describeContents() {

src/org/geometerplus/android/fbreader/api/ApiServerImplementation.java

@@ -22,6 +22,7 @@ package org.geometerplus.android.fbreader.api;
 import java.util.*;
 
 import org.geometerplus.zlibrary.core.library.ZLibrary;
+import org.geometerplus.zlibrary.core.config.ZLConfig;
 
 import org.geometerplus.zlibrary.text.view.*;
 
@@ -104,8 +105,13 @@ public class ApiServerImplementation extends ApiInterface.Stub implements Api, A
 		try {
 			switch (method) {
 				case GET_OPTION_GROUPS:
+					return ApiObject.envelope(getOptionGroups());
 				case GET_OPTION_NAMES:
+					return ApiObject.envelope(getOptionNames(
+						((ApiObject.String)parameters[0]).Value
+					));
 				case GET_BOOK_TAGS:
+					return ApiObject.envelope(getBookTags());
 				default:
 					return Collections.<ApiObject>singletonList(unsupportedMethodError(method));
 			}
@@ -137,18 +143,15 @@ public class ApiServerImplementation extends ApiInterface.Stub implements Api, A
 
 	// preferences information
 	public List<String> getOptionGroups() {
-		// TODO: implement
+		return ZLConfig.Instance().listGroups();
-		return Collections.emptyList();
 	}
 
 	public List<String> getOptionNames(String group) {
-		// TODO: implement
+		return ZLConfig.Instance().listNames(group);
-		return Collections.emptyList();
 	}
 
 	public String getOptionValue(String group, String name) {
-		// TODO: implement
+		return ZLConfig.Instance().getValue(group, name, null);
-		return null;
 	}
 
 	public void setOptionValue(String group, String name, String value) {

src/org/geometerplus/zlibrary/core/config/ZLConfig.java

@@ -19,6 +19,8 @@
 
 package org.geometerplus.zlibrary.core.config;
 
+import java.util.List;
+
 public abstract class ZLConfig {
 	public static ZLConfig Instance() {
 		return ourInstance;
@@ -30,6 +32,9 @@ public abstract class ZLConfig {
 		ourInstance = this;
 	}
 
+	public abstract List<String> listGroups();
+	public abstract List<String> listNames(String group);
+
 	public abstract String getValue(String group, String name, String defaultValue);
 	public abstract void setValue(String group, String name, String value);
 	public abstract void unsetValue(String group, String name);

src/org/geometerplus/zlibrary/core/sqliteconfig/ZLSQLiteConfig.java

@@ -19,7 +19,11 @@
 
 package org.geometerplus.zlibrary.core.sqliteconfig;
 
+import java.util.List;
+import java.util.LinkedList;
+
 import android.content.Context;
+import android.database.Cursor;
 import android.database.SQLException;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteStatement;
@@ -78,6 +82,26 @@ public final class ZLSQLiteConfig extends ZLConfig {
 		*/
 	}
 
+	synchronized public List<String> listGroups() {
+		final LinkedList<String> list = new LinkedList<String>();
+		final Cursor cursor = myDatabase.rawQuery("SELECT DISTINCT groupName FROM config", null);
+		while (cursor.moveToNext()) {
+			list.add(cursor.getString(0));
+		}
+		cursor.close();
+		return list;
+	}
+
+	synchronized public List<String> listNames(String group) {
+		final LinkedList<String> list = new LinkedList<String>();
+		final Cursor cursor = myDatabase.rawQuery("SELECT name FROM config WHERE groupName = ?", new String[] { group });
+		while (cursor.moveToNext()) {
+			list.add(cursor.getString(0));
+		}
+		cursor.close();
+		return list;
+	}
+
 	synchronized public void removeGroup(String name) {
 		myDeleteGroupStatement.bindString(1, name);
 		try {