Published Protocol Data Validation

Added data validation and automatic closing to the published protocol form. Not an elegant solution at the moment, but it works!

ProtocolMasterWPF/App.xaml

@@ -18,7 +18,7 @@
 
                 <ResourceDictionary>
                     <helpers:NotNullToBoolConverter x:Key="NotNullToBoolConverter"/>
-                    <helpers:NotNullToBoolConverter x:Key="NullOrEmptyStringToBoolConverter"/>
+                    <helpers:IsEnabledConverter x:Key="IsEnabledConverter"/>
                 </ResourceDictionary>
             </ResourceDictionary.MergedDictionaries>
         </ResourceDictionary>

ProtocolMasterWPF/Helpers/IsEnabledConverter.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Windows.Controls;
+using System.Windows.Data;
+
+namespace ProtocolMasterWPF.Helpers
+{
+    public class IsEnabledConverter : IMultiValueConverter
+    {
+        public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            if (values.LongLength > 0)
+            {
+                foreach (var value in values)
+                {
+                    if (value is bool && (bool)value)
+                    {
+                        return false;
+                    }
+                }
+            }
+            return true;
+        }
+
+        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

ProtocolMasterWPF/Helpers/NotEmptyValidationRule.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Windows.Controls;
+
+namespace ProtocolMasterWPF.Helpers
+{
+    public class NotEmptyValidationRule : ValidationRule
+    {
+        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
+        {
+            return string.IsNullOrWhiteSpace((value ?? "").ToString())
+                ? new ValidationResult(false, "Field is required.")
+                : ValidationResult.ValidResult;
+        }
+    }
+}

ProtocolMasterWPF/View/PublishedSelectView.xaml

@@ -4,6 +4,8 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:local="clr-namespace:ProtocolMasterWPF.View"
+                          xmlns:helpers="clr-namespace:ProtocolMasterWPF.Helpers"
+
              xmlns:model="clr-namespace:ProtocolMasterWPF.Model" xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
              mc:Ignorable="d" 
              d:DesignHeight="450" d:DesignWidth="800">
@@ -21,13 +23,12 @@
                 <ColumnDefinition Width="Auto"/>
                 <ColumnDefinition Width="Auto"/>
             </Grid.ColumnDefinitions>
-            <materialDesign:PopupBox StaysOpen="True" Grid.Column="0" PlacementMode="RightAndAlignBottomEdges" Margin="0,0,12,0">
+            <materialDesign:PopupBox x:Name="AddPopup" StaysOpen="True" Grid.Column="0" PlacementMode="RightAndAlignBottomEdges" Margin="0,0,12,0">
                 <materialDesign:PopupBox.ToggleContent>
                     <materialDesign:PackIcon Foreground="{DynamicResource MaterialDesignDarkForeground}" Kind="Add" Margin="10" Height="24" Width="24"/>
                 </materialDesign:PopupBox.ToggleContent>
                 <Grid Width="300" Margin="8,0">
                     <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="Auto"/>
                         <ColumnDefinition/>
                     </Grid.ColumnDefinitions>
                     <Grid.RowDefinitions>
@@ -36,15 +37,29 @@
                         <RowDefinition Height="*" />
                         <RowDefinition Height="*" />
                     </Grid.RowDefinitions>
-                    <TextBlock Grid.Row="0" Grid.ColumnSpan="2" Style="{DynamicResource MaterialDesignBody2TextBlock}" Text="Add Published File" HorizontalAlignment="Center"/>
-                    <TextBlock Grid.Row="1" Grid.Column="0" Text="Name:" VerticalAlignment="Center" Margin="8"/>
-                    <TextBox x:Name="NewNameText" Grid.Row="1" Grid.Column="1" VerticalAlignment="Center" Margin="8"/>
-                    <TextBlock Grid.Row="2" Grid.Column="0" Text="URL:"  VerticalAlignment="Center" Margin="8"/>
-                    <TextBox x:Name="NewURLText" Grid.Row="2" Grid.Column="1" VerticalAlignment="Center" Margin="8"/>
-                    <StackPanel Grid.Row="3" Grid.ColumnSpan="2" Orientation="Horizontal" HorizontalAlignment="Right" Margin="8">
-                        <Button Style="{DynamicResource MaterialDesignFlatMidBgButton}" Click="AddButton_Click">
-                            <TextBlock>Add New</TextBlock>
-                        </Button>
+                    <TextBlock Grid.Row="0" Style="{DynamicResource MaterialDesignBody2TextBlock}" Text="New Published File" HorizontalAlignment="Center"/>
+                    <TextBox x:Name="NewNameText" materialDesign:HintAssist.Hint="Protocol Name" materialDesign:ValidationAssist.OnlyShowOnFocus="True"
+                             Grid.Row="1" VerticalAlignment="Center" Margin="8" Validation.Error="HandleValidationError">
+                        <TextBox.Text>
+                            <Binding Path="NewName" UpdateSourceTrigger="PropertyChanged" NotifyOnValidationError="True">
+                                <Binding.ValidationRules>
+                                    <helpers:NotEmptyValidationRule ValidatesOnTargetUpdated="True"/>
+                                </Binding.ValidationRules>
+                            </Binding>
+                        </TextBox.Text>
+                    </TextBox>
+                    <TextBox x:Name="NewURLText" materialDesign:HintAssist.Hint="https://protocol.url/download.file" materialDesign:ValidationAssist.OnlyShowOnFocus="True"
+                             Grid.Row="2" VerticalAlignment="Center" Margin="8" Validation.Error="HandleValidationError">
+                        <TextBox.Text>
+                            <Binding Path="NewURL" UpdateSourceTrigger="PropertyChanged" NotifyOnValidationError="True">
+                                <Binding.ValidationRules>
+                                    <helpers:NotEmptyValidationRule ValidatesOnTargetUpdated="True"/>
+                                </Binding.ValidationRules>
+                            </Binding>
+                        </TextBox.Text>
+                    </TextBox>
+                    <StackPanel Grid.Row="3" Orientation="Horizontal" HorizontalAlignment="Right" Margin="8">
+                        <Button Style="{DynamicResource MaterialDesignFlatMidBgButton}" x:Name="AddButton" Click="AddButton_Click" Content="Save"/>
                     </StackPanel>
                 </Grid>
             </materialDesign:PopupBox>

ProtocolMasterWPF/View/PublishedSelectView.xaml.cs

@@ -1,6 +1,7 @@
 using ProtocolMasterWPF.Model;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Text;
 using System.Windows;
 using System.Windows.Controls;
@@ -19,14 +20,47 @@ namespace ProtocolMasterWPF.View
     /// </summary>
     public partial class PublishedSelectView : UserControl, ISelectView
     {
+        public static readonly DependencyProperty NewNameProperty =
+            DependencyProperty.Register("NewName", typeof(string), typeof(PublishedSelectView));
+        public string NewName
+        {
+            get { return (string)GetValue(NewNameProperty); }
+            set { SetValue(NewNameProperty, value); }
+        }
+        public static readonly DependencyProperty NewURLProperty =
+            DependencyProperty.Register("NewURL", typeof(string), typeof(PublishedSelectView));
+        public string NewURL
+        {
+            get { return (string)GetValue(NewURLProperty); }
+            set { SetValue(NewURLProperty, value); }
+        }
+
+        private int _numberOfValidationErrors = 0;
+        public bool HasNoValidationErrors => _numberOfValidationErrors == 0;
+
+        private void HandleValidationError(object sender, ValidationErrorEventArgs e)
+        {
+            if (e.Action == ValidationErrorEventAction.Added)
+                _numberOfValidationErrors++;
+            else
+                _numberOfValidationErrors--;
+            AddButton.IsEnabled = HasNoValidationErrors;
+        }
         public PublishedSelectView()
         {
             InitializeComponent();
         }
 
         public ListBox SelectList => SelectListBox;
 
+
         private void DeleteButton_Click(object sender, RoutedEventArgs e) => PublishedFileStore.Instance.Remove(SelectListBox.SelectedValue as PublishedFileStreamer);
-        private void AddButton_Click(object sender, RoutedEventArgs e) => PublishedFileStore.Instance.Add(NewNameText.Text, NewURLText.Text);
+        private void AddButton_Click(object sender, RoutedEventArgs e)
+        {
+            PublishedFileStore.Instance.Add(NewName, NewURL);
+            NewName = "";
+            NewURL = "";
+            AddPopup.IsPopupOpen = false;
+        }
     }
 }