From 32895ad1a6ad6d8923798fd7e8f9d41396ed23a6 Mon Sep 17 00:00:00 2001
From: Boris Fritscher <boris@fritscher.ch>
Date: Mon, 17 Jul 2017 13:23:39 +0200
Subject: [PATCH] Refactor to transform a list of special keys into
 keycapborder visuals

---
 src/Carnac/UI/KeyShowView.xaml         | 22 +----------
 src/Carnac/UI/ToSpecialKeyConverter.cs | 55 ++++++++++++++++++++++++++
 2 files changed, 57 insertions(+), 20 deletions(-)
 create mode 100644 src/Carnac/UI/ToSpecialKeyConverter.cs

diff --git a/src/Carnac/UI/KeyShowView.xaml b/src/Carnac/UI/KeyShowView.xaml
index 914ce248..10af6599 100644
--- a/src/Carnac/UI/KeyShowView.xaml
+++ b/src/Carnac/UI/KeyShowView.xaml
@@ -16,6 +16,7 @@
             </CollectionViewSource.SortDescriptions>
         </CollectionViewSource>
         <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
+        <ui:ToSpecialKeyConverter x:Key="ToSpecialKeyConverter"/>
 
         <DrawingBrush x:Key="Layer1" Stretch="Uniform">
             <DrawingBrush.Drawing>
@@ -149,26 +150,7 @@
                                         <Setter TargetName="regular" Property="Control.Visibility" Value="Collapsed" />
                                     </DataTrigger>
 
-                                    <DataTrigger Value="Back" Binding="{Binding .}">
-                                        <Setter TargetName="KeyCapBorder" Property="Control.Visibility" Value="Visible" />
-                                        <Setter TargetName="regular" Property="Control.Visibility" Value="Collapsed" />
-                                    </DataTrigger>
-
-                                    <DataTrigger Value="Escape" Binding="{Binding .}">
-                                        <Setter TargetName="KeyCapBorder" Property="Control.Visibility" Value="Visible" />
-                                        <Setter TargetName="regular" Property="Control.Visibility" Value="Collapsed" />
-                                    </DataTrigger>
-
-                                    <DataTrigger Value="Alt" Binding="{Binding .}">
-                                        <Setter TargetName="KeyCapBorder" Property="Control.Visibility" Value="Visible" />
-                                        <Setter TargetName="regular" Property="Control.Visibility" Value="Collapsed" />
-                                    </DataTrigger>
-                                    <DataTrigger Value="Ctrl" Binding="{Binding .}">
-                                        <Setter TargetName="KeyCapBorder" Property="Control.Visibility" Value="Visible" />
-                                        <Setter TargetName="regular" Property="Control.Visibility" Value="Collapsed" />
-                                    </DataTrigger>
-
-                                    <DataTrigger Value="Shift" Binding="{Binding .}">
+                                    <DataTrigger Value="SPECIAL_KEY" Binding="{Binding ., Converter={StaticResource ToSpecialKeyConverter}}">
                                         <Setter TargetName="KeyCapBorder" Property="Control.Visibility" Value="Visible" />
                                         <Setter TargetName="regular" Property="Control.Visibility" Value="Collapsed" />
                                     </DataTrigger>
diff --git a/src/Carnac/UI/ToSpecialKeyConverter.cs b/src/Carnac/UI/ToSpecialKeyConverter.cs
new file mode 100644
index 00000000..185b2858
--- /dev/null
+++ b/src/Carnac/UI/ToSpecialKeyConverter.cs
@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace Carnac.UI
+{
+    public class ToSpecialKeyConverter : IValueConverter
+    {
+
+        private readonly List<String> specialKeys = new List<String>(){
+            "Escape",
+            "Alt",
+            "Ctrl",
+            "Shift",
+            "Tab",
+            "Delete",
+            "Insert",
+            "Home",
+            "Next",
+            "PageUp",
+            "PageDown",
+            "End",
+            "Back",
+            "NumLock",
+            "PrintScreen",
+            "Scroll",
+            "Capital",
+            "F1",
+            "F2",
+            "F3",
+            "F4",
+            "F5",
+            "F6",
+            "F7",
+            "F8",
+            "F9",
+            "F10",
+            "F11",
+            "F12",
+            "Apps",
+            "BrowserHome",
+        };
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return specialKeys.Contains(value.ToString()) ? "SPECIAL_KEY" : value;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}