Added converters

src/Banquale/Banquale/Views/Balance/BalanceView.xaml

@@ -1,10 +1,18 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:conv="clr-namespace:Banquale.Views.Converters"
              x:Class="Banquale.Views.Balance.BalanceView">
+
+    <ContentView.Resources>
+        <conv:Bool2ColorConverters x:Key="bool2ColorConverters"/>
+        <conv:Int2StringConverters x:Key="int2StringConverters"/>
+    </ContentView.Resources>
+
     <VerticalStackLayout>
 
 
+
         <ListView ItemsSource="{Binding TransactionsList}"
                   SelectionMode="None">
 
@@ -38,8 +46,9 @@
                                 Margin="10, 0, 0, 0"/>
 
                             <Label
-                                Text="{Binding Sum, StringFormat='{0} €'}"
+                                Text="{Binding Sum, Converter={StaticResource int2StringConverters}, ConverterParameter={Binding Type}, StringFormat='{0} €'}"
                                 Grid.Column="2"
+                                TextColor="{Binding Type, Converter={StaticResource bool2ColorConverters}}"
                                 VerticalOptions="Center"
                                 HorizontalOptions="End"
                                 Margin="0, 0, 20, 0"/>

src/Banquale/Banquale/Views/Converters/Bool2ColorConverters.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Banquale.Views.Converters
+{
+    public class Bool2ColorConverters : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            bool NewValue = (bool) value;
+            
+            if (NewValue== true)
+                return Colors.Red;
+            return Colors.Green;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

src/Banquale/Banquale/Views/Converters/Int2StringConverters.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Banquale.Views.Converters
+{
+    public class Int2StringConverters : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            string res;
+            Debug.WriteLine(parameter);
+            //return value.ToString();
+            //if (parameter is not bool)
+            //    return false;
+            bool NewParameter = (bool)parameter;
+            if (NewParameter)
+                res = "-" + (string)value;
+            else
+                res = "+" + (string)value;
+            return res;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

src/Banquale/Banquale/Views/TransactionsPage.xaml

@@ -2,8 +2,12 @@
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              x:Class="Banquale.Views.TransactionsPage"
+             xmlns:conv="clr-namespace:Banquale.Views.Converters"
              Title="TransactionsPage">
 
+    <ContentPage.Resources>
+        <conv:Bool2ColorConverters x:Key="bool2ColorConverters"/>
+    </ContentPage.Resources>
     <!--<Grid RowDefinitions="2*, *, 0*, *, 0*, *, *, *, *, *, *">
         
         <Grid Grid.Row="1"  ColumnDefinitions="2*, *, 2*">
@@ -40,6 +44,7 @@
         <Label
             Text="{Binding Sum, StringFormat='{0} €'}"
             HorizontalOptions="Center"
+            TextColor="{Binding Type, Converter={StaticResource bool2ColorConverters}}"
             FontSize="Large"
             Margin="0, 0, 0, 20"/>