From ce1ef2fd892a7133123a01b83af3806952418f4c Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Thu, 24 Dec 2015 00:55:41 +0000
Subject: [PATCH] Make Carousel demo buttons work.

---
 .../ControlCatalog/Pages/CarouselPage.paml.cs | 11 +++++++---
 src/Perspex.Controls/Carousel.cs              | 22 +++++++++++++++++++
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/samples/ControlCatalog/Pages/CarouselPage.paml.cs b/samples/ControlCatalog/Pages/CarouselPage.paml.cs
index 540cb5cc87..b5ec05f51e 100644
--- a/samples/ControlCatalog/Pages/CarouselPage.paml.cs
+++ b/samples/ControlCatalog/Pages/CarouselPage.paml.cs
@@ -5,18 +5,23 @@ namespace ControlCatalog.Pages
 {
     public class CarouselPage : UserControl
     {
-        private Carousel carousel;
-        private Button left;
-        private Button right;
+        private Carousel _carousel;
+        private Button _left;
+        private Button _right;
 
         public CarouselPage()
         {
             this.InitializeComponent();
+            _left.Click += (s, e) => _carousel.Previous();
+            _right.Click += (s, e) => _carousel.Next();
         }
 
         private void InitializeComponent()
         {
             PerspexXamlLoader.Load(this);
+            _carousel = this.FindControl<Carousel>("carousel");
+            _left = this.FindControl<Button>("left");
+            _right = this.FindControl<Button>("right");
         }
     }
 }
diff --git a/src/Perspex.Controls/Carousel.cs b/src/Perspex.Controls/Carousel.cs
index 97745e1452..919e4ef542 100644
--- a/src/Perspex.Controls/Carousel.cs
+++ b/src/Perspex.Controls/Carousel.cs
@@ -44,6 +44,28 @@ namespace Perspex.Controls
             set { SetValue(TransitionProperty, value); }
         }
 
+        /// <summary>
+        /// Moves to the next item in the carousel.
+        /// </summary>
+        public void Next()
+        {
+            if (SelectedIndex < Items.Count() - 1)
+            {
+                ++SelectedIndex;
+            }
+        }
+
+        /// <summary>
+        /// Moves to the previous item in the carousel.
+        /// </summary>
+        public void Previous()
+        {
+            if (SelectedIndex > 0)
+            {
+                --SelectedIndex;
+            }
+        }
+
         /// <inheritdoc/>
         protected override void OnKeyDown(KeyEventArgs e)
         {