unmask single field when using the toggle menu option in the popup menu, closes https://github.com/PhilippC/keepass2android/issues/71; add option for specifying the default visibility of the TOTP field, closes https://github.com/PhilippC/keepass2android/issues/1873

src/keepass2android/EntryActivity.cs

@@ -45,6 +45,7 @@ using KeePass.DataExchange;
 using KeePass.Util.Spr;
 using KeePassLib.Interfaces;
 using KeePassLib.Serialization;
+using PluginTOTP;
 using File = Java.IO.File;
 using Uri = Android.Net.Uri;
 
@@ -138,7 +139,7 @@ namespace keepass2android
 
 		private PasswordFont _passwordFont = new PasswordFont();
 
-		internal bool _showPassword;
+		internal Dictionary<TextView /*the "ProtectedField" of the ProtectedTextviewGroup*/, bool> _showPassword = new Dictionary<TextView, bool>();
 		private int _pos;
 
         private AppTask _appTask;
@@ -391,8 +392,10 @@ namespace keepass2android
 			edit.PutLong(GetString(Resource.String.UsageCount_key), usageCount + 1);
 			edit.Commit();
 
-			_showPassword =
+			_showPasswordDefault =
 				!prefs.GetBoolean(GetString(Resource.String.maskpass_key), Resources.GetBoolean(Resource.Boolean.maskpass_default));
+            _showTotpDefault =
+                !prefs.GetBoolean(GetString(Resource.String.masktotp_key), Resources.GetBoolean(Resource.Boolean.masktotp_default));
 
 			RequestWindowFeature(WindowFeatures.IndeterminateProgress);
 			
@@ -567,7 +570,7 @@ namespace keepass2android
 		    SetPasswordTypeface(valueViewVisible);
 		    if (isProtected)
 		    {
-		        RegisterProtectedTextView(valueView, valueViewVisible);
+		        RegisterProtectedTextView(key, valueView, valueViewVisible);
                 
 		    }
 		    else
@@ -700,8 +703,12 @@ namespace keepass2android
 
 
 
-		private void RegisterProtectedTextView(TextView protectedTextView, TextView visibleTextView)
+		private void RegisterProtectedTextView(string fieldKey, TextView protectedTextView, TextView visibleTextView)
 		{
+            if (!_showPassword.ContainsKey(protectedTextView))
+            {
+                _showPassword[protectedTextView] = fieldKey == UpdateTotpTimerTask.TotpKey ? _showTotpDefault : _showPasswordDefault;
+            }
 		    var protectedTextviewGroup = new ProtectedTextviewGroup { ProtectedField = protectedTextView, VisibleProtectedField = visibleTextView};
 		    _protectedTextViews.Add(protectedTextviewGroup);
             SetPasswordStyle(protectedTextviewGroup);
@@ -809,7 +816,7 @@ namespace keepass2android
 			PopulateStandardText(Resource.Id.entry_url, Resource.Id.entryfield_container_url, PwDefs.UrlField);
 			PopulateStandardText(new List<int> { Resource.Id.entry_password, Resource.Id.entry_password_visible}, Resource.Id.entryfield_container_password, PwDefs.PasswordField);
 		    
-            RegisterProtectedTextView(FindViewById<TextView>(Resource.Id.entry_password), FindViewById<TextView>(Resource.Id.entry_password_visible));
+            RegisterProtectedTextView(PwDefs.PasswordField, FindViewById<TextView>(Resource.Id.entry_password), FindViewById<TextView>(Resource.Id.entry_password_visible));
 
 			RegisterTextPopup(FindViewById<RelativeLayout> (Resource.Id.groupname_container),
 				              FindViewById (Resource.Id.entry_group_name), KeyGroupFullPath);
@@ -886,7 +893,11 @@ namespace keepass2android
 				anchor);
 			popupItems.Add(new CopyToClipboardPopupMenuIcon(this, _stringViews[fieldKey]));
             if (isProtected)
-				popupItems.Add(new ToggleVisibilityPopupMenuItem(this));
+            {
+                var valueView = container.FindViewById<TextView>(fieldKey == PwDefs.PasswordField ? Resource.Id.entry_password : Resource.Id.entry_extra);
+				popupItems.Add(new ToggleVisibilityPopupMenuItem(this, valueView));
+            }
+
             if (fieldKey != PwDefs.UrlField //url already has a go-to-url menu
                 && (_stringViews[fieldKey].Text.StartsWith(KeePass.AndroidAppScheme)
                     || _stringViews[fieldKey].Text.StartsWith("http://")
@@ -1070,6 +1081,8 @@ namespace keepass2android
 	    }
         
 	    private ExportBinaryProcessManager _exportBinaryProcessManager;
+        private bool _showPasswordDefault;
+        private bool _showTotpDefault;
 
         protected override void OnSaveInstanceState(Bundle outState)
 	    {
@@ -1114,7 +1127,7 @@ namespace keepass2android
 		private void UpdateTogglePasswordMenu()
 		{
 			IMenuItem togglePassword = _menu.FindItem(Resource.Id.menu_toggle_pass);
-			if (_showPassword)
+			if (_showPassword.Values.All(x => x))
 			{
 				togglePassword.SetTitle(Resource.String.menu_hide_password);
 			}
@@ -1134,8 +1147,9 @@ namespace keepass2android
 
         private void SetPasswordStyle(ProtectedTextviewGroup group)
         {
-            group.VisibleProtectedField.Visibility = _showPassword ? ViewStates.Visible : ViewStates.Gone;
+            bool showPassword = _showPassword.GetValueOrDefault(group.ProtectedField, _showPasswordDefault);
-            group.ProtectedField.Visibility = !_showPassword ? ViewStates.Visible : ViewStates.Gone;
+            group.VisibleProtectedField.Visibility = showPassword ? ViewStates.Visible : ViewStates.Gone;
+            group.ProtectedField.Visibility = !showPassword ? ViewStates.Visible : ViewStates.Gone;
 
             SetPasswordTypeface(group.VisibleProtectedField);
 
@@ -1191,15 +1205,17 @@ namespace keepass2android
                     task.Start();
                     break;
                 case Resource.Id.menu_toggle_pass:
-					if (_showPassword)
+					if (_showPassword.Values.All(x => x))
 					{
 						item.SetTitle(Resource.String.show_password);
-						_showPassword = false;
+						foreach (var k in _showPassword.Keys.ToList())
+						    _showPassword[k] = false;
 					}
 					else
 					{
 						item.SetTitle(Resource.String.menu_hide_password);
-						_showPassword = true;
+                        foreach (var k in _showPassword.Keys.ToList())
+                            _showPassword[k] = true;
 					}
 					SetPasswordStyle();
 
@@ -1261,9 +1277,25 @@ namespace keepass2android
 			pt.Run();
 
 		}
-		public void ToggleVisibility()
+
+        public bool GetVisibilityForProtectedView(TextView protectedView)
         {
-			_showPassword = !_showPassword;
+            if (protectedView == null)
+            {
+                return _showPasswordDefault;
+            }
+            if (_showPassword.ContainsKey(protectedView) == false)
+            {
+                _showPassword[protectedView] = _showPasswordDefault;
+            }
+
+            return _showPassword[protectedView];
+        }
+
+		public void ToggleVisibility(TextView valueView)
+		{
+            
+            _showPassword[valueView] = !GetVisibilityForProtectedView(valueView);
 			SetPasswordStyle();
 			UpdateTogglePasswordMenu();
 		}

src/keepass2android/EntryActivityClasses/ToggleVisibilityPopupMenuItem.cs

@@ -1,4 +1,5 @@
 using Android.Graphics.Drawables;
+using Android.Widget;
 
 namespace keepass2android
 {
@@ -8,12 +9,13 @@ namespace keepass2android
 	class ToggleVisibilityPopupMenuItem : IPopupMenuItem
 	{
 		private readonly EntryActivity _activity;
+        private readonly TextView _valueView;
 
 
-		public ToggleVisibilityPopupMenuItem(EntryActivity activity)
+        public ToggleVisibilityPopupMenuItem(EntryActivity activity, TextView valueView)
         {
             _activity = activity;
-			
+            _valueView = valueView;
         }
 
 		public Drawable Icon 
@@ -30,7 +32,7 @@ namespace keepass2android
 			get
 			{
 				return _activity.Resources.GetString(
-					_activity._showPassword ? 
+					_activity.GetVisibilityForProtectedView(_valueView) ? 
 						Resource.String.menu_hide_password 
 						: Resource.String.show_password);
 			}
@@ -39,7 +41,7 @@ namespace keepass2android
 		
 		public void HandleClick()
 		{
-			_activity.ToggleVisibility();
+			_activity.ToggleVisibility(_valueView);
 		}
 	}
 }

src/keepass2android/Resources/values/config.xml

@@ -66,6 +66,7 @@
 	<string name="master_pwd_key">change_master_pwd</string>
     <string name="keyfile_key">keyfile</string>
     <string name="maskpass_key">maskpass</string>
+  <string name="masktotp_key">masktotp</string>
     <string name="omitbackup_key">omitbackup</string>    
     <string name="list_size_key">list_size</string>
 	<string name="design_key">design_key</string>
@@ -82,6 +83,7 @@
     
     <string name="BinaryDirectory_default">/mnt/sdcard/keepass2android/binaries/</string>
     <bool name="maskpass_default">true</bool>
+    <bool name="masktotp_default">true</bool>
     <bool name="keyfile_default">true</bool>
     <bool name="omitbackup_default">true</bool>
     <bool name="TanExpiresOnUse_default">true</bool>

src/keepass2android/Resources/values/strings.xml

@@ -186,6 +186,10 @@
   <string name="MaskedPassword">*****</string>
   <string name="maskpass_title">Mask password</string>
   <string name="maskpass_summary">Hide passwords by default</string>
+
+  <string name="masktotp_title">Mask TOTP field</string>
+  <string name="masktotp_summary">Hide TOTP field by default</string>
+
   <string name="menu_about">About</string>
   <string name="menu_change_key">Change Master Key</string>
   <string name="menu_copy_pass">Copy Password</string>

src/keepass2android/Resources/xml/preferences.xml

@@ -243,6 +243,12 @@
 			  android:summary="@string/maskpass_summary"
 			  android:defaultValue="@bool/maskpass_default"/>
 
+      <CheckBoxPreference
+        android:key="@string/masktotp_key"
+        android:title="@string/masktotp_title"
+        android:summary="@string/masktotp_summary"
+        android:defaultValue="@bool/masktotp_default"/>
+
 			<CheckBoxPreference
 			  android:key="@string/ShowUsernameInList_key"
 			  android:title="@string/ShowUsernameInList_title"