Remember last selected tab and restore on load

micahmo · Aug 20, 2019 · abcffde · abcffde
1 parent 4a5dc1a
commit abcffde
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Showing 2 changed files with 36 additions and 0 deletions.
diff --git a/SoundBoard/Extensions.cs b/SoundBoard/Extensions.cs
@@ -1,7 +1,9 @@
 #region Usings
 
 using System.Collections.Generic;
+using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
 
 #endregion
 
@@ -71,4 +73,24 @@ public static bool IsBlack(this System.Windows.Media.Color color)
     }
 
     #endregion
+
+    #region TabItemExtensions class
+
+    /// <summary>
+    /// Extensions on the <see cref="TabItem"/> class.
+    /// </summary>
+    internal static class TabItemExtensions
+    {
+        /// <summary>
+        /// Returns <see langword="true"/> if the given <paramref name="tabItem"/> is the <see cref="Selector.SelectedItem"/> of its <see cref="FrameworkElement.Parent"/> <see cref="TabControl"/>.
+        /// </summary>
+        /// <param name="tabItem"></param>
+        /// <returns></returns>
+        public static bool IsSelectedItem(this TabItem tabItem)
+        {
+            return tabItem == (tabItem.Parent as TabControl)?.SelectedItem;
+        }
+    }
+
+    #endregion
 }
diff --git a/SoundBoard/MainWindow.xaml.cs b/SoundBoard/MainWindow.xaml.cs
@@ -180,13 +180,21 @@ private void LoadSettings(string configFilePath)
 
                     if (tabNodes != null)
                     {
+                        TabItem selectedTab = null;
+
                         foreach (XmlNode node in tabNodes)
                         {
                             string name = node["name"]?.InnerText;
 
                             MetroTabItem tab = new MyMetroTabItem {Header = name};
                             Tabs.Items.Add(tab);
 
+                            if (node.Attributes?["focused"]?.Value is string focusedString &&
+                                bool.TryParse(focusedString, out bool focused) && focused)
+                            {
+                                selectedTab = tab;
+                            }
+
                             List<SoundButtonUndoState> buttons = new List<SoundButtonUndoState>();
 
                             // Read the button data
@@ -222,6 +230,11 @@ private void LoadSettings(string configFilePath)
                             CreatePageContent(tab, buttons);
                         }
 
+                        if (selectedTab is null == false)
+                        {
+                            Tabs.SelectedItem = selectedTab;
+                        }
+
                         CreateTabContextMenus();
                     }
                 }
@@ -538,6 +551,7 @@ private void SaveSettings(string configFilePath)
                     {
                         string name = tab.Header.ToString();
                         textWriter.WriteStartElement("tab");
+                        textWriter.WriteAttributeString("focused", tab.IsSelectedItem().ToString());
 
                         textWriter.WriteElementString("name", name);