Features/reactive validation

samples/Maui/ValidationRulesTest/ValidationRulesTest.sln

@@ -7,6 +7,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ValidationRulesTest", "Vali
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Plugin.ValidationRules", "..\..\..\src\ValidationRules\Plugin.ValidationRules.csproj", "{74CB3C79-59A7-4AAA-A94F-EDA9D278847E}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Plugin.Reactive.ValidationRules", "..\..\..\src\Plugin.Reactive.ValidationRules\Plugin.Reactive.ValidationRules.csproj", "{44FC6F88-FC72-4DC9-B6EB-E76B896A3861}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -23,6 +25,10 @@ Global
 		{74CB3C79-59A7-4AAA-A94F-EDA9D278847E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{74CB3C79-59A7-4AAA-A94F-EDA9D278847E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{74CB3C79-59A7-4AAA-A94F-EDA9D278847E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{44FC6F88-FC72-4DC9-B6EB-E76B896A3861}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{44FC6F88-FC72-4DC9-B6EB-E76B896A3861}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{44FC6F88-FC72-4DC9-B6EB-E76B896A3861}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{44FC6F88-FC72-4DC9-B6EB-E76B896A3861}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

samples/Maui/ValidationRulesTest/ValidationRulesTest/ValidationRulesTest.csproj

@@ -50,6 +50,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
+	  <ProjectReference Include="..\..\..\..\src\Plugin.Reactive.ValidationRules\Plugin.Reactive.ValidationRules.csproj" />
 	  <ProjectReference Include="..\..\..\..\src\ValidationRules\Plugin.ValidationRules.csproj" />
 	</ItemGroup>
 

samples/Maui/ValidationRulesTest/ValidationRulesTest/ViewModels/ReactiveValidationExample1ViewModel.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using Plugin.Reactive.ValidationRules;
+using Plugin.ValidationRules.Extensions;
+using Plugin.ValidationRules.Interfaces;
+using Plugin.ValidationRules.Rules;
+using ValidationRulesTest.Validations;
+using EmailRule = Plugin.ValidationRules.Rules.EmailRule;
+
+namespace ValidationRulesTest.ViewModels
+{
+    public class ReactiveValidationExample1ViewModel : ExtendedPropertyChanged, IDisposable
+    {
+        ReactiveValidatable<string> _name;
+        public ReactiveValidatable<string> Name
+        {
+            get => _name;
+            set => SetProperty(ref _name, value);
+        }
+
+        public ReactiveValidatable<string> _email;
+        public ReactiveValidatable<string> Email
+        {
+            get => _email;
+            set => SetProperty(ref _email, value);
+        }
+
+        public ReactiveValidatable<string> _password;
+        public ReactiveValidatable<string> Password
+        {
+            get => _password;
+            set => SetProperty(ref _password, value);
+        }
+
+        public ReactiveValidationExample1ViewModel()
+        {
+            Name = new ReactiveValidatable<string>(
+                string.Empty, new NotEmptyRule<string>(string.Empty)
+                {
+                    ValidationMessage = "Name is required"
+                });
+
+            Email = new ReactiveValidatable<string>(string.Empty,
+                new EmailRule()
+                {
+                    ValidationMessage = "Email wrongly formatted"
+                },
+                new NotEmptyRule<string>(string.Empty)
+                {
+                    ValidationMessage = "Email is required"
+                });
+
+            Password = new ReactiveValidatable<string>(string.Empty, new PasswordRule(), new NotEmptyRule<string>(string.Empty)
+            {
+                ValidationMessage = "Password is required"
+            });
+        }
+
+        public void Dispose()
+        {
+            _name?.Dispose();
+            _email?.Dispose();
+            _password?.Dispose();
+        }
+    }
+}

samples/Maui/ValidationRulesTest/ValidationRulesTest/Views/Examples.xaml

@@ -52,6 +52,12 @@
                 Clicked="example8_Clicked"
                 Text="Example 8" />
 
+            <Button x:Name="reactiveValidationExample1"
+                    Clicked="ReactiveValidationExample1_Clicked"
+                    Text="Reactive Validation Example" >
+
+            </Button>
+
         </StackLayout>
     </ContentPage.Content>
 

samples/Maui/ValidationRulesTest/ValidationRulesTest/Views/Examples.xaml.cs

@@ -47,5 +47,9 @@ private void example8_Clicked(object sender, EventArgs e)
         {
             Navigation.PushAsync(new Example8());
         }
+        private void ReactiveValidationExample1_Clicked(object sender, EventArgs e)
+        {
+            Navigation.PushAsync(new ReactiveValidationExample1());
+        }
     }
 }

samples/Maui/ValidationRulesTest/ValidationRulesTest/Views/ReactiveValidationExample1.xaml

@@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage x:Class="ValidationRulesTest.Views.ReactiveValidationExample1"
+             xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:viewModels="clr-namespace:ValidationRulesTest.ViewModels;assembly=ValidationRulesTest"
+             x:DataType="viewModels:ReactiveValidationExample1ViewModel"
+             Title="Reactive Validation">
+
+    <Grid RowDefinitions="100,100,100,100,*"
+              Margin="10">
+
+        <StackLayout HorizontalOptions="Center"
+                         VerticalOptions="Start">
+            <Label Text="Reactive Validation Example 1" FontAttributes="Bold" 
+                       HorizontalOptions="Center"
+                       FontSize="Large"/>
+            <Label Text="This example shows how to use ReactiveUI's validation rules to validate a ViewModel." 
+                       HorizontalOptions="Center"
+                       Margin="10"
+                       HorizontalTextAlignment="Center"/>
+        </StackLayout>
+
+        <Grid Grid.Row="1"
+              VerticalOptions="Start"
+              RowDefinitions="*,Auto">
+            <Entry Text="{Binding Name.Value, Mode=TwoWay}"
+                   Placeholder="Username"/>
+            <Label Text="{Binding Name.ErrorMessage}"
+                   Grid.Row="1"
+                   TextColor="Red">
+                <Label.Triggers>
+                    <DataTrigger Binding="{Binding Name.IsValid}"
+                                 Value="False"
+                                 TargetType="Label">
+                        <Setter Property="IsVisible" Value="True"/>
+                    </DataTrigger>
+                    <DataTrigger Binding="{Binding Name.IsValid}"
+                                     Value="True"
+                                     TargetType="Label">
+                        <Setter Property="IsVisible" Value="False"/>
+                    </DataTrigger>
+                </Label.Triggers>
+            </Label>
+        </Grid>
+
+        <Grid Grid.Row="2"
+              VerticalOptions="Start"
+                  RowDefinitions="*,Auto">
+            <Entry Text="{Binding Email.Value, Mode=TwoWay}"
+                   Placeholder="Email"/>
+            <Label Text="{Binding Email.ErrorMessage}"
+                    TextColor="Red"
+                    Grid.Row="1">
+                <Label.Triggers>
+                    <DataTrigger Binding="{Binding Email.IsValid}"
+                                     Value="False"
+                                     TargetType="Label">
+                        <Setter Property="IsVisible" Value="True"/>
+                    </DataTrigger>
+                    <DataTrigger Binding="{Binding Email.IsValid}"
+                                 Value="True"
+                                 TargetType="Label">
+                        <Setter Property="IsVisible" Value="False"/>
+                    </DataTrigger>
+                </Label.Triggers>
+            </Label>
+        </Grid>
+
+        <Grid Grid.Row="3"
+              VerticalOptions="Start"
+              RowDefinitions="*,*">
+            <Entry Text="{Binding Password.Value, Mode=TwoWay}"
+                   Placeholder="Password"/>
+            <Label Text="{Binding Password.ErrorMessage}"
+                       TextColor="Red"
+                       Grid.Row="1"
+                       IsVisible="False">
+                <Label.Triggers>
+                    <DataTrigger Binding="{Binding Password.IsValid}"
+                                     Value="False"
+                                     TargetType="Label">
+                        <Setter Property="IsVisible" Value="True"/>
+                    </DataTrigger>
+                    <DataTrigger Binding="{Binding Password.IsValid}"
+                                     Value="True"
+                                     TargetType="Label">
+                        <Setter Property="IsVisible" Value="False"/>
+                    </DataTrigger>
+                </Label.Triggers>
+            </Label>
+        </Grid>
+    </Grid>
+
+</ContentPage>

samples/Maui/ValidationRulesTest/ValidationRulesTest/Views/ReactiveValidationExample1.xaml.cs

@@ -0,0 +1,23 @@
+using ValidationRulesTest.ViewModels;
+
+namespace ValidationRulesTest.Views
+{
+    [XamlCompilation(XamlCompilationOptions.Compile)]
+    public partial class ReactiveValidationExample1 : ContentPage
+    {
+        ReactiveValidationExample1ViewModel _viewModel;
+
+        public ReactiveValidationExample1()
+        {
+            InitializeComponent();
+            _viewModel = new ReactiveValidationExample1ViewModel();
+            BindingContext = _viewModel;
+        }
+
+        protected override void OnDisappearing()
+        {
+            _viewModel.Dispose();
+            base.OnDisappearing();
+        }
+    }
+}

samples/Xamarin.Forms/ValidationRulesTest.sln

@@ -11,6 +11,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ValidationRulesTest", "Vali
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Plugin.ValidationRules", "..\..\src\ValidationRules\Plugin.ValidationRules.csproj", "{1DA953F3-E1A6-425A-B823-629006A45561}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Plugin.Reactive.ValidationRules", "..\..\src\Plugin.Reactive.ValidationRules\Plugin.Reactive.ValidationRules.csproj", "{AAC08845-4F44-4851-B512-372380949518}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Ad-Hoc|Any CPU = Ad-Hoc|Any CPU
@@ -159,6 +161,30 @@ Global
 		{1DA953F3-E1A6-425A-B823-629006A45561}.Release|iPhone.Build.0 = Release|Any CPU
 		{1DA953F3-E1A6-425A-B823-629006A45561}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
 		{1DA953F3-E1A6-425A-B823-629006A45561}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Ad-Hoc|Any CPU.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Ad-Hoc|Any CPU.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Ad-Hoc|iPhone.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Ad-Hoc|iPhone.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Ad-Hoc|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Ad-Hoc|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.AppStore|Any CPU.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.AppStore|Any CPU.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.AppStore|iPhone.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.AppStore|iPhone.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.AppStore|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.AppStore|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Release|iPhone.Build.0 = Release|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{AAC08845-4F44-4851-B512-372380949518}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

samples/Xamarin.Forms/ValidationRulesTest/ValidationRulesTest/ValidationRulesTest.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
@@ -14,10 +14,14 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Plugin.Reactive.ValidationRules\Plugin.Reactive.ValidationRules.csproj" />
     <ProjectReference Include="..\..\..\..\src\ValidationRules\Plugin.ValidationRules.csproj" />
   </ItemGroup>
 
   <ItemGroup>
+    <Compile Update="Views\ReactiveValidationExample1.xaml.cs">
+      <DependentUpon>ReactiveValidationExample1.xaml</DependentUpon>
+    </Compile>
     <Compile Update="Views\Example1.xaml.cs">
       <DependentUpon>Example1.xaml</DependentUpon>
     </Compile>

samples/Xamarin.Forms/ValidationRulesTest/ValidationRulesTest/ViewModels/ReactiveValidationExample1ViewModel.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using Plugin.Reactive.ValidationRules;
+using Plugin.ValidationRules.Extensions;
+using Plugin.ValidationRules.Interfaces;
+using Plugin.ValidationRules.Rules;
+using ValidationRulesTest.Validations;
+using EmailRule = Plugin.ValidationRules.Rules.EmailRule;
+
+namespace ValidationRulesTest.ViewModels
+{
+    public class ReactiveValidationExample1ViewModel : ExtendedPropertyChanged, IDisposable
+    {
+        ReactiveValidatable<string> _name;
+        public ReactiveValidatable<string> Name
+        {
+            get => _name;
+            set => SetProperty(ref _name, value);
+        }
+
+        public ReactiveValidatable<string> _email;
+        public ReactiveValidatable<string> Email
+        {
+            get => _email;
+            set => SetProperty(ref _email, value);
+        }
+
+        public ReactiveValidatable<string> _password;
+        public ReactiveValidatable<string> Password
+        {
+            get => _password;
+            set => SetProperty(ref _password, value);
+        }
+
+        public ReactiveValidationExample1ViewModel()
+        {
+            Name = new ReactiveValidatable<string>(
+                string.Empty, new NotEmptyRule<string>(string.Empty)
+                {
+                    ValidationMessage = "Name is required"
+                });
+
+            Email = new ReactiveValidatable<string>(string.Empty,
+                new EmailRule()
+                {
+                    ValidationMessage = "Email wrongly formatted"
+                },
+                new NotEmptyRule<string>(string.Empty)
+                {
+                    ValidationMessage = "Email is required"
+                });
+
+            Password = new ReactiveValidatable<string>(string.Empty, new PasswordRule(), new NotEmptyRule<string>(string.Empty)
+            {
+                ValidationMessage = "Password is required"
+            });
+        }
+
+        public void Dispose()
+        {
+            _name?.Dispose();
+            _email?.Dispose();
+            _password?.Dispose();
+        }
+    }
+}

samples/Xamarin.Forms/ValidationRulesTest/ValidationRulesTest/Views/Example1.xaml

@@ -1,10 +1,9 @@
 <?xml version="1.0" encoding="utf-8" ?>
-<ContentPage
-    x:Class="ValidationRulesTest.Example1"
-    xmlns="http://xamarin.com/schemas/2014/forms"
-    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-    xmlns:local="clr-namespace:ValidationRulesTest"
-    Title="Test 1">
+<ContentPage x:Class="ValidationRulesTest.Example1"
+             xmlns="http://xamarin.com/schemas/2014/forms"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:local="clr-namespace:ValidationRulesTest"
+             Title="Test 1">
 
     <StackLayout Padding="16">