Allow closing and deleting OTP databases (#9)

Allow closure and deletion of OTP database
Prompt for deletion of OTP database when switching to entry-specific storage

Translations/KeePassOTP.de.language.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Translation>
-  <TranslationVersion>6</TranslationVersion>
+  <TranslationVersion>7</TranslationVersion>
   <item>
     <key>OTPCopyTrayNoEntries</key>
     <value>KPOTP - Keine Einträge vorhanden</value>
@@ -225,5 +225,13 @@ Neuer Platzhalter: {1}
 
 Damit Auto-Type weiterhin vollumfänglich genutzt werden kann, muss {0} überall durch {1} ersetzt werden..
 Soll diese Ersetzung jetzt in allen geladenen Datenbanken durchgeführt werden?</value>
+  </item>
+    <item>
+	<kye>ConfirmOTPDBDelete</key>
+	<value>Diese Aktion deaktiviert die OTP-Datenbank.
+Die OTP-Datenbank wird dadurch NICHT gelöscht.
+
+Klicke '{0}' um die OTP-Datenbank zu deaktivieren und zu löschen.
+Klicke '{1}' um die OTP-Datenbank zu deaktivieren und nicht zu löschen.</value>
   </item>
 </Translation>

Translations/KeePassOTP.template.language.xml

@@ -228,4 +228,12 @@ New value: {1}
 All occurrences of {0} need to be replaced by {1} for Auto-Type to work.
 Replace now in currently loaded databases?</value>
   </item>
+  <item>
+	<kye>ConfirmOTPDBDelete</key>
+	<value>This will deactivate the OTP database. 
+It will NOT delete the OTP database.
+
+Click '{0}' to deactivate AND delete OTP database.
+Click '{1}' to deactivate but not delete OTP database.</value>
+  </item>
 </Translation>

src/DAO/OTPDAO_DB.cs

@@ -134,9 +134,20 @@ public void OTPDB_Open()
 				}
 
 				OTPDB_Load();
+				if (OTPDB_Opened) OTPDB.Modified = false;
 				m_bOpening = false;
 			}
 
+			public void OTPDB_Close()
+			{
+				if (!Valid) return;
+				if (!OTPDB_Opened) return;
+
+				OTPDB_Save();
+				OTPDB.Close();
+				OTPDB_Opened = false;
+			}
+
 			public void OTPDB_Remove()
 			{
 				if (!Valid) return;
@@ -342,6 +353,13 @@ private void UpdateDBHeader()
 			#endregion
 
 			#region Handle PwEntry
+			public bool HasEntries()
+			{
+				if (!Valid) return false;
+				if (!OTPDB_Exists) return false;
+				if (!OTPDB_Opened) return false;
+				return (OTPDB.RootGroup != null) && (OTPDB.RootGroup.GetEntriesCount(true) > 0);
+			}
 			public override bool EnsureOTPSetupPossible(PwEntry pe)
 			{
 				if (!Valid) return false;

src/KeePassOTPColumnProvider.cs

@@ -89,6 +89,7 @@ public void StopTimer()
 		}
 
 		private bool m_bUpdateInProgress = false;
+		public static bool ForceUpdate = false;
 		private void OnTimerTick(object sender, EventArgs e)
 		{
 			if (m_bUpdateInProgress)
@@ -101,14 +102,14 @@ private void OnTimerTick(object sender, EventArgs e)
 				if (KeePass.Program.MainForm.UIIsInteractionBlocked()) return;
 				if (!KeePass.Program.MainForm.Visible) return;
 				if (!KeePass.Program.MainForm.ActiveDatabase.IsOpen) return;
-				if (KeePass.Program.Config.MainWindow.EntryListColumns.Find(x => x.CustomName == KeePassOTPColumnProvider.KPOTPColumnName) == null) return;
+				if (KeePass.Program.Config.MainWindow.EntryListColumns.Find(x => x.CustomName == KPOTPColumnName) == null) return;
 				PwGroup pg = KeePass.Program.MainForm.GetSelectedGroup();
 				if (pg == null) return;
 				bool bRefresh = pg.GetEntries(KeePass.Program.Config.MainWindow.ShowEntriesOfSubGroups).FirstOrDefault(x => OTPDAO.OTPDefined(x) == OTPDAO.OTPDefinition.Complete) != null;
-				if (!bRefresh) return;
+				if (!bRefresh && !ForceUpdate) return; //Update entry list if OTP DB was closed / deleted
+				if (ForceUpdate) ForceUpdate = false;
 				bool LVPossible = LV_DirectUpdate();
-				if (!LVPossible)
-					KeePass.Program.MainForm.RefreshEntriesList();
+				if (!LVPossible) KeePass.Program.MainForm.RefreshEntriesList();
 			}
 			finally { m_bUpdateInProgress = false; }
 		}