[mac] Update arrange mode to tabs

1 files changed, 82 insertions, 0 deletions

diff --git a/Xamarin.PropertyEditing.Mac/Controls/Custom/TabButton.cs b/Xamarin.PropertyEditing.Mac/Controls/Custom/TabButton.cs
new file mode 100644
index 0000000..eb6807c
--- /dev/null
+++ b/Xamarin.PropertyEditing.Mac/Controls/Custom/TabButton.cs
@@ -0,0 +1,82 @@
+using System;
+using AppKit;
+using CoreGraphics;
+using Foundation;
+
+namespace Xamarin.PropertyEditing.Mac
+{
+	internal class TabButton
+		: NSButton
+	{
+		public TabButton (IHostResourceProvider hostResource, string imageName)
+		{
+			if (hostResource == null)
+				throw new ArgumentNullException (nameof (hostResource));
+			if (imageName == null)
+				throw new ArgumentNullException (nameof (imageName));
+
+			Bordered = false;
+			Action = new ObjCRuntime.Selector (ClickedName);
+
+			var clicked = new NSClickGestureRecognizer (OnClicked);
+			AddGestureRecognizer (clicked);
+
+			this.hostResource = hostResource;
+			this.imageName = imageName;
+
+			ViewDidChangeEffectiveAppearance ();
+		}
+
+		public event EventHandler Clicked;
+
+		public bool Selected
+		{
+			get { return this.selected; }
+			set
+			{
+				Enabled = value;
+				this.selected = value;
+				NeedsDisplay = true;
+			}
+		}
+
+		public override CGSize IntrinsicContentSize
+		{
+			get
+			{
+				var size = base.IntrinsicContentSize;
+				return new CGSize (size.Width + 2 + 10, size.Height + 2 + 10);
+			}
+		}
+
+		public override void ViewDidChangeEffectiveAppearance ()
+		{
+			base.ViewDidChangeEffectiveAppearance ();
+			Image = this.hostResource.GetNamedImage (this.imageName);
+		}
+
+		public override void DrawRect (CGRect dirtyRect)
+		{
+			base.DrawRect (dirtyRect);
+			if (!Selected)
+				return;
+
+			NSBezierPath path = new NSBezierPath ();
+			path.AppendPathWithRect (new CGRect (Bounds.X, Bounds.Height - 2, Bounds.Width, 2));
+			(Selected ? NSColor.Text : NSColor.DisabledControlText).Set ();
+			path.Fill ();
+		}
+
+		private readonly string imageName;
+		private readonly IHostResourceProvider hostResource;
+		private bool selected;
+
+		private const string ClickedName = "OnClicked";
+
+		[Export (ClickedName)]
+		private void OnClicked()
+		{
+			Clicked?.Invoke (this, EventArgs.Empty);
+		}
+	}
+}