From dccfe8d8808a21f5af393f5c165ff31bdbc502d1 Mon Sep 17 00:00:00 2001
From: Larry Ewing <lewing@microsoft.com>
Date: Fri, 13 Jul 2018 21:48:36 -0500
Subject: Draw icons if the image is set

---
 .../Controls/Custom/UnderlinedTabViewController.cs | 109 +++++++++++++++++----
 1 file changed, 90 insertions(+), 19 deletions(-)

(limited to 'Xamarin.PropertyEditing.Mac/Controls/Custom/UnderlinedTabViewController.cs')

diff --git a/Xamarin.PropertyEditing.Mac/Controls/Custom/UnderlinedTabViewController.cs b/Xamarin.PropertyEditing.Mac/Controls/Custom/UnderlinedTabViewController.cs
index 8225319..3526287 100644
--- a/Xamarin.PropertyEditing.Mac/Controls/Custom/UnderlinedTabViewController.cs
+++ b/Xamarin.PropertyEditing.Mac/Controls/Custom/UnderlinedTabViewController.cs
@@ -3,40 +3,111 @@ using AppKit;
 
 namespace Xamarin.PropertyEditing.Mac
 {
+	internal class SegmentStack : NSView
+	{
+		class SegmentItem
+		{
+			public NSImage Image { get; set; }
+			public string Label { get; set; }
+			public NSView View { get; set; }
+		}
+
+
+		private SegmentItem[] segments = new SegmentItem[0];
+		private NSStackView stackView = new NSStackView () {
+			Spacing = 3
+		};
+
+		public void SetImage (NSImage image, int segment)
+		{
+			var item = this.segments[segment];
+
+			item.Image = image;
+			if (item.Image != null)
+				return;
+
+			item.View = new UnderlinedImageView (image.Name) {
+			//	Image = image
+			};
+			this.stackView.AddView (item.View, NSStackViewGravity.Leading);
+		}
+
+		public NSImage GetImage (int segment)
+		{
+			return this.segments[segment].Image;
+		}
+
+		public void SetLabel (string label, int segment)
+		{
+			var item = this.segments[segment];
+			item.Label = label;
+			if (item.Image != null)
+				return;
+			
+			item.View = new UnderlinedTextField () {
+				BackgroundColor = NSColor.Clear,
+				Editable = false,
+				Bezeled = false,
+				StringValue = label
+			};
+			this.stackView.AddView (item.View, NSStackViewGravity.Leading);
+		}
+
+		public string GetLabel (int segment)
+		{
+			return this.segments[segment].Label;
+		}
+
+		public int SegmentCount
+		{
+			get => this.segments.Length;
+			set
+			{
+				this.segments = new SegmentItem[value];
+			}
+		}
+	}
+
 	internal class UnderlinedTabViewController<TViewModel> : NotifyingTabViewController<TViewModel> where TViewModel : NotifyingObject
 	{
-		private NSStackView labelStack = new NSStackView () {
+		private NSStackView tabStack = new NSStackView () {
 			Spacing = 4f,
 		};
 
 		public override void NumberOfItemsChanged (NSTabView tabView)
 		{
 			base.NumberOfItemsChanged (tabView);
-			var items = this.labelStack.Views.ToList ();
+			var items = this.tabStack.Views.ToList ();
 			foreach (var view in items) {
-				this.labelStack.RemoveView (view);
+				this.tabStack.RemoveView (view);
 			}
 			var i = 0;
 			foreach (var item in TabViewItems) {
-				this.labelStack.AddView (new UnderlinedTextField () {
-					BackgroundColor = NSColor.Clear,
-					Editable = false,
-					Bezeled = false,
-					StringValue = item.Label,
-					Selected = i == SelectedTabViewItemIndex,
-				}, NSStackViewGravity.Leading);
+				if (item.Image != null) {
+					this.tabStack.AddView (new UnderlinedImageView (item.Image.Name) {
+						Selected = i == SelectedTabViewItemIndex
+					}, NSStackViewGravity.Leading);
+				} else {
+					this.tabStack.AddView (new UnderlinedTextField () {
+						BackgroundColor = NSColor.Clear,
+						Editable = false,
+						Bezeled = false,
+						StringValue = item.Label,
+						Selected = i == SelectedTabViewItemIndex,
+					}, NSStackViewGravity.Leading);
+				}
 				i++;
 			}
 		}
 
 		public override void MouseDown (NSEvent theEvent)
 		{
-			var hit = View.HitTest (View.Superview.ConvertPointFromView (theEvent.LocationInWindow, null));
-			if (!(hit is UnderlinedTextField))
+			NSView hit = View.HitTest (View.Superview.ConvertPointFromView (theEvent.LocationInWindow, null));
+			if (!(hit is ISelectable))
 				return;
 
 			int i = 0;
-			foreach (var label in labelStack.Views) {
+			foreach (var label in tabStack.Views) {
 				if (hit == label) {
 					SelectedTabViewItemIndex = i;
 					break;
@@ -48,10 +119,10 @@ namespace Xamarin.PropertyEditing.Mac
 		public override void DidSelect (NSTabView tabView, NSTabViewItem item)
 		{
 			base.DidSelect (tabView, item);
-			for (int i = 0; i < this.labelStack.Views.Length; i++) {
-				var underlined = this.labelStack.Views[i] as UnderlinedTextField;
-				if (underlined != null)
-					underlined.Selected = SelectedTabViewItemIndex == i;
+			for (int i = 0; i < this.tabStack.Views.Length; i++) {
+				var tabItem = this.tabStack.Views[i] as ISelectable;
+				if (tabItem != null)
+					tabItem.Selected = SelectedTabViewItemIndex == i;
 			}
 		}
 
@@ -59,11 +130,11 @@ namespace Xamarin.PropertyEditing.Mac
 		{
 			var stack = new NSStackView () {
 				Spacing = 0,
-				Alignment = NSLayoutAttribute.Width,
+				Alignment = NSLayoutAttribute.Left,
 				Orientation = NSUserInterfaceLayoutOrientation.Vertical
 			};
 
-			stack.AddView (this.labelStack, NSStackViewGravity.Leading);
+			stack.AddView (this.tabStack, NSStackViewGravity.Top);
 			stack.AddView (TabView, NSStackViewGravity.Bottom);
 			View = stack;
 		}
-- 
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