More refactoring

Added first simple unit test

src/Kp2aBusinessLogic/PwGroupEqualityFromIdComparer.cs

@@ -15,21 +15,14 @@ This file is part of Keepass2Android, Copyright 2013 Philipp Crocoll.
   along with Keepass2Android.  If not, see <http://www.gnu.org/licenses/>.
   */
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
-using Android.App;
-using Android.Content;
-using Android.OS;
-using Android.Runtime;
-using Android.Views;
-using Android.Widget;
 using KeePassLib;
 
 namespace keepass2android
 {
+	/// <summary>
+	/// EqualityComparer implementation to compare PwGroups based on their Id
+	/// </summary>
 	class PwGroupEqualityFromIdComparer: IEqualityComparer<PwGroup>
 	{
 		#region IEqualityComparer implementation			

src/Kp2aBusinessLogic/PwUuidEqualityComparer.cs

@@ -15,22 +15,14 @@ This file is part of Keepass2Android, Copyright 2013 Philipp Crocoll.
   along with Keepass2Android.  If not, see <http://www.gnu.org/licenses/>.
   */
 
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
-using Android.App;
-using Android.Content;
-using Android.OS;
-using Android.Runtime;
-using Android.Views;
-using Android.Widget;
-
 using KeePassLib;
 
 namespace keepass2android
 {
+	/// <summary>
+	/// EqualityComparer for PwUuid based on their value (instead of reference)
+	/// </summary>
 	public class PwUuidEqualityComparer: IEqualityComparer<PwUuid>
 	{
 		#region IEqualityComparer implementation			

src/Kp2aBusinessLogic/UiStringKey.cs

@@ -1,5 +1,11 @@
 namespace keepass2android
 {
+	/// <summary>
+	/// Keys to identify user-displayable strings.
+	/// </summary>
+	/// Do not rename the keys here unless you rename the corresponding keys in the resource file of KP2A.
+	/// The keys are resolved by reflection to the static Resource class. This kind of duplication is necessary 
+	/// in order to use the Resource mechanism of Android but still decouple the logic layer from the UI.
     public enum UiStringKey
     {
         AskDeletePermanentlyGroup,

src/Kp2aBusinessLogic/database/Database.cs

@@ -139,7 +139,7 @@ namespace keepass2android
 		}
 		
 		public PwGroup SearchForText(String str) {
-			PwGroup group = SearchHelper.searchForText(this, str);
+			PwGroup group = SearchHelper.SearchForText(this, str);
 			
 			return group;
 			
@@ -147,19 +147,19 @@ namespace keepass2android
 
 		public PwGroup Search(SearchParameters searchParams)
 		{
-			return SearchHelper.search(this, searchParams);
+			return SearchHelper.Search(this, searchParams);
 		}
 
 		
 		public PwGroup SearchForExactUrl(String url) {
-			PwGroup group = SearchHelper.searchForExactUrl(this, url);
+			PwGroup group = SearchHelper.SearchForExactUrl(this, url);
 			
 			return group;
 			
 		}
 
 		public PwGroup SearchForHost(String url, bool allowSubdomains) {
-			PwGroup group = SearchHelper.searchForHost(this, url, allowSubdomains);
+			PwGroup group = SearchHelper.SearchForHost(this, url, allowSubdomains);
 			
 			return group;
 			

src/Kp2aBusinessLogic/database/edit/DeleteRunnable.cs

@@ -110,12 +110,12 @@ namespace keepass2android
 	                    {
 		                    DeletePermanently = true;
 		                    ProgressTask pt = new ProgressTask(App, Ctx, this, UiStringKey.saving_database);
-		                    pt.run();
+		                    pt.Run();
 	                    },
                 (dlgSender, dlgEvt) => {	
 	                                       DeletePermanently = false;
 	                                       ProgressTask pt = new ProgressTask(App, Ctx, this, UiStringKey.saving_database);
-	                                       pt.run();
+	                                       pt.Run();
                 },
                 (dlgSender, dlgEvt) => {},
                 Ctx);
@@ -125,7 +125,7 @@ namespace keepass2android
 			} else
 			{
 				ProgressTask pt = new ProgressTask(App, Ctx, this, UiStringKey.saving_database);
-				pt.run();
+				pt.Run();
 			}
 		}
 

src/Kp2aBusinessLogic/database/edit/SetPassword.cs

@@ -77,7 +77,7 @@ namespace keepass2android
 		private class AfterSave : OnFinish {
 			private readonly CompositeKey _backup;
 			private readonly DateTime _previousKeyChanged;
-			private PwDatabase _db;
+			private readonly PwDatabase _db;
 			
 			public AfterSave(CompositeKey backup, DateTime previousKeyChanged, PwDatabase db, OnFinish finish): base(finish) {
 				_previousKeyChanged = previousKeyChanged;