Added option not to remember recently opened files

src/keepass2android/Resources/values/config.xml

@@ -42,6 +42,7 @@
     <string name="timeout_key">timeout_key</string>
 	<string name="TanExpiresOnUse_key">TanExpiresOnUse_key</string>
 	<string name="ShowUsernameInList_key">ShowUsernameInList_key</string>
+	<string name="RememberRecentFiles_key">RememberRecentFiles_key</string>
     <string name="default_username_key">defaultUsername</string>
     <string name="database_name_key">databaseName</string>
     <string name="BinaryDirectory_key">binaryDirectory</string>
@@ -52,6 +53,8 @@
     <bool name="omitbackup_default">true</bool>
     <bool name="TanExpiresOnUse_default">true</bool>
     <bool name="ShowUsernameInList_default">true</bool>
+
+	<bool name="RememberRecentFiles_default">true</bool>
     
     <string name="QuickUnlockDefaultEnabled_key">Enable_QuickUnlock_by_default</string>
 	<string name="QuickUnlockLength_key">QuickUnlockLength</string>

src/keepass2android/Resources/values/strings.xml

@@ -179,7 +179,10 @@
   <string name="TanExpiresOnUse_summary">Mark TAN entries expired when using them</string>
   <string name="ShowUsernameInList_title">Display username in list</string>
   <string name="ShowUsernameInList_summary">Display usernames below entry titles. Useful for multiple accounts or TANs.</string>
-  <string name="kp2a_findUrl">Keepass2Android: Find password</string>
+	<string name="RememberRecentFiles_title">Remember databases</string>
+	<string name="RememberRecentFiles_summary">Remember recently opened databases and show them in the Open database screen.</string>
+	
+	<string name="kp2a_findUrl">Keepass2Android: Find password</string>
   <string name="excludeExpiredEntries">Exclude expired entries</string>
   <string name="search_options">Options</string>
   <string name="caseSensitive">Case sensitive</string>

src/keepass2android/Resources/xml/preferences.xml

@@ -149,6 +149,12 @@
 			  android:defaultValue="true"
 			  android:title="@string/UseFileTransactions_title"
 			  android:key="@string/UseFileTransactions_key" />
+		<CheckBoxPreference
+		  android:key="@string/RememberRecentFiles_key"
+		  android:title="@string/RememberRecentFiles_title"
+		  android:summary="@string/RememberRecentFiles_summary"
+		  android:defaultValue="@bool/RememberRecentFiles_default"/>
+		  
 		<CheckBoxPreference
 		 	android:enabled="true"
 			  android:persistent="true"

src/keepass2android/fileselect/FileDbHelper.cs

@@ -180,6 +180,10 @@ namespace keepass2android
 		public void DeleteFile(String filename) {
 			mDb.Delete(FileTable, KeyFileFilename + " = ?", new[] {filename});
 		}
+		public void DeleteAll()
+		{
+			mDb.Delete(FileTable, null, null);
+		}
 
 		static string[] GetColumnList()
 		{

src/keepass2android/fileselect/FileSelectActivity.cs

@@ -19,6 +19,7 @@ using System;
 using Android.App;
 using Android.Content;
 using Android.OS;
+using Android.Preferences;
 using Android.Runtime;
 using Android.Views;
 using Android.Widget;
@@ -211,7 +212,7 @@ namespace keepass2android
 
 
 			_DbHelper = App.Kp2a.FileDbHelper;
-			if (_DbHelper.HasRecentFiles())
+			if (ShowRecentFiles())
 			{
 				_recentMode = true;
 
@@ -283,6 +284,21 @@ namespace keepass2android
 
 		}
 
+		private bool ShowRecentFiles()
+		{
+			if (!RememberRecentFiles())
+			{
+				_DbHelper.DeleteAll();
+			}
+
+			return _DbHelper.HasRecentFiles();
+		}
+
+		private bool RememberRecentFiles()
+		{
+			return PreferenceManager.GetDefaultSharedPreferences(this).GetBoolean(GetString(Resource.String.RememberRecentFiles_key), Resources.GetBoolean(Resource.Boolean.RememberRecentFiles_default));
+		}
+
 
 		protected override void OnSaveInstanceState(Bundle outState)
 		{
@@ -303,12 +319,14 @@ namespace keepass2android
 			
 			public override void Run() {
 				if (Success) {
-					// Add to recent files
-					FileDbHelper dbHelper = App.Kp2a.FileDbHelper;
+					if (_activity.RememberRecentFiles())
+					{
+						// Add to recent files
+						FileDbHelper dbHelper = App.Kp2a.FileDbHelper;
 
-					//TODO: getFilename always returns "" -> bug?
-					dbHelper.CreateFile(_ioc, Filename);
-					
+						//TODO: getFilename always returns "" -> bug?
+						dbHelper.CreateFile(_ioc, Filename);
+					}
 					GroupActivity.Launch(_activity, _activity.AppTask);
 					
 				} else {
@@ -333,8 +351,8 @@ namespace keepass2android
 			
 		}
 		
-		private void FillData() {
-
+		private void FillData()
+		{
 			// Get all of the rows from the database and create the item list
 			Android.Database.ICursor filesCursor = _DbHelper.FetchAllFiles();
 			StartManagingCursor(filesCursor);
@@ -458,9 +476,9 @@ namespace keepass2android
 		{
 			base.OnResume();
 			Kp2aLog.Log("FileSelect.OnResume");
-			
+
 			// Check to see if we need to change modes
-			if (_DbHelper.HasRecentFiles() != _recentMode)
+			if (ShowRecentFiles() != _recentMode)
 			{
 				// Restart the activity
 				Intent intent = Intent;