Finished Navigation system

critterfolio/CritterFolio/CritterFolio/Navigation.axaml

@@ -6,7 +6,12 @@
              x:Class="CritterFolio.Navigation">
     <Grid HorizontalAlignment="Stretch" Height="50" Background="{DynamicResource AccentBackground}" ColumnDefinitions="Auto, *, Auto">
         <Button Grid.Column="0" x:Name="BackButton" Classes="headerBttn" Content="&#xe058;" HorizontalAlignment="Center"/>
-        <Label Grid.Column="1" x:Name="PageTitle" VerticalAlignment="Center" Foreground="{DynamicResource PrimaryForeground}" Margin="20, 0, 0, 0"/>
+        <Label Grid.Column="1"
+               x:Name="PageTitle"
+               VerticalAlignment="Center"
+               Foreground="{DynamicResource PrimaryForeground}"
+               Margin="20, 0, 0, 0"
+               FontSize="20"/>
         <StackPanel Grid.Column="2" x:Name="HeaderButtons" Orientation="Horizontal" HorizontalAlignment="Center"/>
     </Grid>
 </UserControl>

critterfolio/CritterFolio/CritterFolio/Navigation.axaml.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using Avalonia;
@@ -18,16 +19,21 @@ public partial class Navigation : UserControl
         }
     }
     
-    private Panel? _pageContainer;
+    private ContentControl? _pageContainer;
     private Stack<Page> _pageStack = [];
     
     
     public Navigation()
     {
         InitializeComponent();
+
+        BackButton.Click += (sender, args) =>
+        {
+            PopPage();
+        };
     }
 
-    public void Init(Panel pageContainer)
+    public void Init(ContentControl pageContainer)
     {
         _pageContainer = pageContainer;
     }
@@ -58,22 +64,54 @@ public partial class Navigation : UserControl
         HeaderButtons.Children.Remove(button);
     }
 
+    public void ClearHeaderButtons()
+    {
+        HeaderButtons.Children.Clear();
+    }
+    
     public void PushPage(Page page)
     {
+        Console.WriteLine($"Adding page {page.Title} to the page stack");
         _pageStack.Push(page);
+        RefreshPage();
+        PrintPageStack();
     }
 
     public void PopPage()
     {
+        Console.WriteLine($"Removing page {CurrentPage?.Title ?? "??"} from the page stack");
         _pageStack.Pop();
+        RefreshPage();
+        PrintPageStack();
+    }
+
+    private void PrintPageStack()
+    {
+        var i = 0;
+        foreach (var page in _pageStack)
+        {
+            Console.WriteLine($"{i} -  {page.Title}");
+            i++;
+        }
     }
 
 
     private void RefreshPage()
     {
-        _pageContainer?.Children.Clear();
-        if (CurrentPage is null) return;
-        _pageContainer?.Children.Add(CurrentPage);
+        if (_pageContainer == null || CurrentPage is null) return;
+        
+        ClearHeaderButtons();
+        
+        _pageContainer.Content = CurrentPage;
         CurrentPage.Refresh();
+
+        if (_pageStack.Count > 1)
+        {
+            ShowBack();
+        }
+        else
+        {
+            HideBack();
+        }
     }
 }

critterfolio/CritterFolio/CritterFolio/Pages/HomePage.axaml

@@ -0,0 +1,11 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="CritterFolio.Pages.HomePage">
+    <StackPanel>
+        <Label>Home</Label>
+        <Button x:Name="TestBttn">Test</Button>
+    </StackPanel>
+</UserControl>

critterfolio/CritterFolio/CritterFolio/Pages/HomePage.axaml.cs

@@ -0,0 +1,51 @@
+using System;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using Avalonia.Media;
+
+namespace CritterFolio.Pages;
+
+public partial class HomePage : Page
+{
+    public override string Title { get; } = "Home";
+    
+    public HomePage()
+    {
+        InitializeComponent();
+    }
+
+
+    public override void Refresh()
+    {
+        base.Refresh();
+        
+        Sys.Navigation?.SetTitle(Title);
+
+        TestBttn.Click += TestPage;
+        
+        var headBtn = new Button()
+        {
+            Classes = { "headerBttn" },
+            Content = "\ue248"
+        };
+
+        headBtn.Click += (sender, args) =>
+        {
+            Console.WriteLine("Save button clicked");
+        };
+        
+        Sys.Navigation?.AddHeaderButton(headBtn);
+    }
+
+    private void TestPage(object? sender, RoutedEventArgs args)
+    {
+        Sys.Navigation?.PushPage(new TestPage());
+    }
+
+    protected override void ClearConnections()
+    {
+        TestBttn.Click -= TestPage;
+    }
+}

critterfolio/CritterFolio/CritterFolio/Pages/Page.cs

@@ -2,7 +2,16 @@ using Avalonia.Controls;
 
 namespace CritterFolio.Pages;
 
-public abstract class Page : UserControl
+public class Page : UserControl
 {
-    public abstract void Refresh();
+    public virtual string? Title { get; }
+
+    public virtual void Refresh()
+    {
+        ClearConnections();
+    }
+
+    protected virtual void ClearConnections() { }
+
+    
 }

critterfolio/CritterFolio/CritterFolio/Pages/TestPage.axaml

@@ -0,0 +1,8 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="CritterFolio.Pages.TestPage">
+    Test page!
+</UserControl>

critterfolio/CritterFolio/CritterFolio/Pages/TestPage.axaml.cs

@@ -0,0 +1,27 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace CritterFolio.Pages;
+
+public partial class TestPage : Page
+{
+    public override string Title { get; } = "Test";
+    
+    public TestPage()
+    {
+        InitializeComponent();
+    }
+    
+    public override void Refresh()
+    {
+        ClearConnections();
+        
+        Sys.Navigation?.SetTitle(Title);
+    }
+
+    protected override void ClearConnections()
+    {
+        
+    }
+}

critterfolio/CritterFolio/CritterFolio/Views/MainView.axaml

@@ -16,6 +16,7 @@
   <Grid RowDefinitions="Auto, *" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Background="{DynamicResource PrimaryBackground}">
       
       <critterFolio:Navigation Grid.Row="0" x:Name="Nav"/>
+      <ScrollViewer Grid.Row="1" x:Name="ScrollView" />
       
   </Grid>
   

critterfolio/CritterFolio/CritterFolio/Views/MainView.axaml.cs

@@ -1,4 +1,5 @@
 using Avalonia.Controls;
+using CritterFolio.Pages;
 
 namespace CritterFolio.Views;
 
@@ -8,5 +9,7 @@ public partial class MainView : UserControl
     {
         InitializeComponent();
         Sys.Navigation = Nav;
+        Nav.Init(ScrollView);
+        Nav.PushPage(new HomePage());
     }
 }