conditionally show buttons

src/SharpIDE.Godot/Features/Nuget/NugetPackageDetails.cs

@@ -1,7 +1,9 @@
 using Godot;
+using NuGet.Versioning;
 using SharpIDE.Application.Features.Evaluation;
 using SharpIDE.Application.Features.Nuget;
 using SharpIDE.Application.Features.SolutionDiscovery.VsPersistence;
+using SharpIDE.Godot.Features.Problems;
 
 namespace SharpIDE.Godot.Features.Nuget;
 
@@ -29,10 +31,21 @@ public partial class NugetPackageDetails : VBoxContainer
 		_nugetSourceOptionButton = GetNode<OptionButton>("%NugetSourceOptionButton");
 		_projectsVBoxContainer = GetNode<VBoxContainer>("%ProjectsVBoxContainer");
 		_nugetSourceOptionButton.ItemSelected += OnNugetSourceSelected;
+		_versionOptionButton.ItemSelected += VersionSelected;
 		
 		_projectsVBoxContainer.QueueFreeChildren();
 	}
 
+	private void VersionSelected(long index)
+	{
+		var selectedVersion = _versionOptionButton.GetItemMetadata((int)index).As<RefCountedContainer<NuGetVersion>>();
+		foreach (var child in _projectsVBoxContainer.GetChildren().OfType<PackageDetailsProjectEntry>())
+		{
+			child.VersionSelectedInDetails = selectedVersion?.Item;
+			child.DisplayRelevantButtons();
+		}
+	}
+
 	public async Task SetPackage(IdePackageResult package)
 	{
 		_package = package;
@@ -106,10 +119,12 @@ public partial class NugetPackageDetails : VBoxContainer
 			_versionOptionButton.Clear();
 			foreach (var (index, metadata) in results.Index())
 			{
-				_versionOptionButton.AddItem(metadata.Identity.Version.ToNormalizedString());
+				_versionOptionButton.AddItem(metadata.Identity.Version.ToNormalizedString(), index);
+				_versionOptionButton.SetItemMetadata(index, new RefCountedContainer<NuGetVersion>(metadata.Identity.Version));
 				//_versionOptionButton.SetItemIcon(index, _warningIconTextureRect);
 			}
 			_versionOptionButton.Selected = 0;
+			VersionSelected(0);
 		});
 	}
 }

src/SharpIDE.Godot/Features/Nuget/PackageDetailsProjectEntry.cs

@@ -9,13 +9,22 @@ public partial class PackageDetailsProjectEntry : MarginContainer
 {
     private Label _projectNameLabel = null!;
     private Label _installedVersionLabel = null!;
+    private Button _addButton = null!;
+    private Button _upgradeButton = null!;
+    private Button _downgradeButton = null!;
+    private Button _removeButton = null!;
     
     public SharpIdeProjectModel ProjectModel { get; set; } = null!;
     public ProjectPackageReference? ProjectPackageReference { get; set; }
+    public NuGetVersion? VersionSelectedInDetails { get; set; }
     public override void _Ready()
     {
         _projectNameLabel = GetNode<Label>("%ProjectNameLabel");;
         _installedVersionLabel = GetNode<Label>("%InstalledVersionLabel");
+        _addButton = GetNode<Button>("%AddButton");
+        _upgradeButton = GetNode<Button>("%UpgradeButton");
+        _downgradeButton = GetNode<Button>("%DowngradeButton");
+        _removeButton = GetNode<Button>("%RemoveButton");
         _installedVersionLabel.Text = string.Empty;
         SetValues();
     }
@@ -43,6 +52,7 @@ public partial class PackageDetailsProjectEntry : MarginContainer
                                                   {string.Join("\n", transitiveOriginsGroupedByVersion.Select(t => $"{t.RequestedVersion.ToString("p", VersionRangeFormatter.Instance)} by {string.Join(", ", t.PackageNames)}"))}
                                                   """;
         }
+        DisplayRelevantButtons();
     }
     
     public void ClearInstallInfo()
@@ -50,5 +60,40 @@ public partial class PackageDetailsProjectEntry : MarginContainer
         _installedVersionLabel.Text = string.Empty;
         _installedVersionLabel.TooltipText = string.Empty;
         ProjectPackageReference = null;
+        DisplayRelevantButtons();
+    }
+
+    public void DisplayRelevantButtons()
+    {
+        _addButton.Visible = false;
+        _upgradeButton.Visible = false;
+        _downgradeButton.Visible = false;
+        _removeButton.Visible = false;
+        
+        if (VersionSelectedInDetails == null)
+        {
+            _removeButton.Visible = true;
+            return;
+        }
+
+        if (ProjectPackageReference == null || ProjectPackageReference.IsTransitive)
+        {
+            _addButton.Visible = true;
+            return;
+        }
+
+        var installed = ProjectPackageReference.InstalledVersion;
+        var selected = VersionSelectedInDetails;
+
+        if (installed < selected)
+        {
+            _upgradeButton.Visible = true;
+        }
+        else if (installed > selected)
+        {
+            _downgradeButton.Visible = true;
+        }
+
+        _removeButton.Visible = true;
     }
 }

src/SharpIDE.Godot/Features/Nuget/PackageDetailsProjectEntry.tscn

@@ -52,17 +52,21 @@ layout_mode = 2
 size_flags_horizontal = 3
 
 [node name="UpgradeButton" type="Button" parent="HBoxContainer"]
+unique_name_in_owner = true
 layout_mode = 2
 text = "Upgrade"
 
 [node name="DowngradeButton" type="Button" parent="HBoxContainer"]
+unique_name_in_owner = true
 layout_mode = 2
 text = "Downgrade"
 
 [node name="RemoveButton" type="Button" parent="HBoxContainer"]
+unique_name_in_owner = true
 layout_mode = 2
 text = "Remove"
 
 [node name="AddButton" type="Button" parent="HBoxContainer"]
+unique_name_in_owner = true
 layout_mode = 2
 text = "Add"