Add fancy tree control (#13426)

* Add fancy tree control * inject dependencies
2023-01-16 19:45:46 +13:00
parent aacdb2ad0c
commit 4102c9cf7c
11 changed files with 626 additions and 0 deletions
--- a/Content.Client/UserInterface/Controls/FancyTree/TreeItem.xaml.cs
+++ b/Content.Client/UserInterface/Controls/FancyTree/TreeItem.xaml.cs
@@ -0,0 +1,92 @@
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.UserInterface.Controls;
+
+/// <summary>
+///     Element of a <see cref="FancyTree"/>
+/// </summary>
+[GenerateTypedNameReferences]
+public sealed partial class TreeItem : PanelContainer
+{
+    public const string StyleClassSelected = "selected";
+    public const string StyleIdentifierTreeButton = "tree-button";
+    public const string StyleClassEvenRow = "even-row";
+    public const string StyleClassOddRow = "odd-row";
+
+    public object? Metadata;
+    public int Index;
+    public FancyTree Tree = default!;
+    public event Action<TreeItem>? OnSelected;
+    public event Action<TreeItem>? OnDeselected;
+
+    public bool Expanded { get; private set; } = false;
+
+    public TreeItem()
+    {
+        RobustXamlLoader.Load(this);
+        Button.StyleIdentifier = StyleIdentifierTreeButton;
+        Body.OnChildAdded += OnItemAdded;
+        Body.OnChildRemoved += OnItemRemoved;
+    }
+
+    private void OnItemRemoved(Control obj)
+    {
+        Tree.QueueRowStyleUpdate();
+
+        if (Body.ChildCount == 0)
+        {
+            Body.Visible = false;
+            UpdateIcon();
+        }
+    }
+
+    private void OnItemAdded(Control obj)
+    {
+        Tree.QueueRowStyleUpdate();
+
+        if (Body.ChildCount == 1)
+        {
+            Body.Visible = Expanded && Body.ChildCount != 0;
+            UpdateIcon();
+        }
+    }
+
+    public void SetExpanded(bool value)
+    {
+        if (Expanded == value)
+            return;
+
+        Expanded = value;
+        Body.Visible = Expanded && Body.ChildCount > 0;
+        UpdateIcon();
+        Tree.QueueRowStyleUpdate();
+    }
+
+    public void SetSelected(bool value)
+    {
+        if (value)
+        {
+            OnSelected?.Invoke(this);
+            Button.AddStyleClass(StyleClassSelected);
+        }
+        else
+        {
+            OnDeselected?.Invoke(this);
+            Button.RemoveStyleClass(StyleClassSelected);
+        }
+    }
+
+    public void UpdateIcon()
+    {
+        if (Body.ChildCount == 0)
+            Icon.Texture = Tree.IconNoChildren;
+        else
+            Icon.Texture = Expanded ? Tree.IconExpanded : Tree.IconCollapsed;
+
+        Icon.Modulate = Tree.IconColor;
+        Icon.Visible = Icon.Texture != null || !Tree.HideEmptyIcon;
+    }
+}