Next button is disabled in the wizard if the server address is null o…

…r just a whitespace(s).

src/Soloplan.WhatsON.GUI/Config/Wizard/WizardController.cs

@@ -65,6 +65,16 @@ public class WizardController : INotifyPropertyChanged
     /// </summary>
     private ISubjectPlugin subjectPlugin;
 
+    /// <summary>
+    /// The proposed server address.
+    /// </summary>
+    private string proposedServerAddress;
+
+    /// <summary>
+    /// Is proposed address empty flag.
+    /// </summary>
+    private bool isProposedAddressEmpty;
+
     /// <summary>
     /// Initializes a new instance of the <see cref="WizardController"/> class.
     /// </summary>
@@ -99,6 +109,30 @@ public WizardController(Window ownerWindow)
     /// </summary>
     public bool IsNotLastStep => !this.IsLastStep;
 
+    /// <summary>
+    /// Gets a value indicating whether this the next step button is enabled.
+    /// </summary>
+    /// <value>
+    ///   <c>true</c> if the next step button is enabled; otherwise, <c>false</c>.
+    /// </value>
+    public bool IsNextStepEnabled => this.IsNotLastStep && !this.IsProposedAddressEmpty;
+
+    /// <summary>
+    /// Gets a value indicating whether the proposed address is empty.
+    /// </summary>
+    /// <value>
+    ///   <c>true</c> if the proposed address is empty; otherwise, <c>false</c>.
+    /// </value>
+    public bool IsProposedAddressEmpty
+    {
+      get => this.isProposedAddressEmpty;
+      private set
+      {
+        this.isProposedAddressEmpty = value;
+        this.OnPropertyChanged(nameof(this.IsNextStepEnabled));
+      }
+    }
+
     /// <summary>
     /// Gets or sets a value indicating whether multi selection mode is active.
     /// </summary>
@@ -107,7 +141,16 @@ public WizardController(Window ownerWindow)
     /// <summary>
     /// Gets or sets the proposed server address.
     /// </summary>
-    public string ProposedServerAddress { get; set; }
+    public string ProposedServerAddress
+    {
+      get => this.proposedServerAddress;
+      set
+      {
+        this.proposedServerAddress = value;
+        this.IsProposedAddressEmpty = string.IsNullOrWhiteSpace(value);
+        this.OnPropertyChanged(nameof(this.IsProposedAddressEmpty));
+      }
+    }
 
     /// <summary>
     /// Gets a value indicating whether any project is checked.
@@ -318,6 +361,7 @@ private void OnPageChanged()
       this.OnPropertyChanged(nameof(this.IsLastStep));
       this.OnPropertyChanged(nameof(this.IsNotLastStep));
       this.OnPropertyChanged(nameof(this.IsFinishEnabled));
+      this.OnPropertyChanged(nameof(this.IsNextStepEnabled));
     }
 
     /// <summary>

src/Soloplan.WhatsON.GUI/Config/Wizard/WizardWindow.xaml

@@ -20,7 +20,7 @@
       <TextBlock x:Name="StepDescription" TextWrapping="Wrap" Text="Wizard step description" VerticalAlignment="Top" DockPanel.Dock="Top" Margin="0,0,0,10" FontSize="24" FontFamily="Arial" FontWeight="SemiBold"/>
       <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" DockPanel.Dock="Bottom" Margin="0,15,0,6">
         <Button Margin="0,0,10,0" Click="PrevClick" IsEnabled="{Binding Path=IsNotFirstStep}" Width="90">Previous</Button>
-        <Button Click="NextClick" Visibility="{Binding Path=IsNotLastStep, Converter={StaticResource BoolToVis}}" Width="90">Next</Button>
+        <Button Click="NextClick" Visibility="{Binding Path=IsNotLastStep, Converter={StaticResource BoolToVis}}" IsEnabled="{Binding Path=IsNextStepEnabled}" Width="90">Next</Button>
         <Button Click="FinishClick" Visibility="{Binding Path=IsLastStep, Converter={StaticResource BoolToVis}}" IsEnabled="{Binding Path=IsAnyProjectChecked}" Width="90">Finish</Button>
       </StackPanel>
       <Frame x:Name="Frame" Content="Frame" NavigationUIVisibility="Hidden"/>