Add ability to change number of sound buttons per page (with undo)

SoundBoard/ButtonGridDialog.xaml

@@ -0,0 +1,84 @@
+<soundBoard:ChildWindowBase x:Class="SoundBoard.ButtonGridDialog" x:ClassModifier="internal"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:simpleChildWindow="clr-namespace:MahApps.Metro.SimpleChildWindow;assembly=MahApps.Metro.SimpleChildWindow"
+             xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
+             xmlns:soundBoard="clr-namespace:SoundBoard"
+             mc:Ignorable="d"
+
+             Title="Change Button Grid"
+             IsModal="true"
+             Padding="100"
+             ShowCloseButton="true"
+             AllowMove="true"
+             CloseByEscape="true">
+
+    <simpleChildWindow:ChildWindow.OverlayBrush>
+        <SolidColorBrush Opacity="0.7" Color="{StaticResource BlackColor}" />
+    </simpleChildWindow:ChildWindow.OverlayBrush>
+
+    <!-- Content -->
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="50"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="20"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="50"/>
+            <RowDefinition Height="Auto"/>
+        </Grid.RowDefinitions>
+
+        <Grid Grid.Row="1">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="100"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="10"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="20"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="100"/>
+            </Grid.ColumnDefinitions>
+
+            <xctk:IntegerUpDown x:Name="RowUpDown"
+                                Grid.Column="1"
+                                Minimum="1" 
+                                ValueChanged="RowUpDown_ValueChanged"
+                                DefaultValue="5"
+                                DisplayDefaultValueOnEmptyText="true"
+                                KeyUp="RowUpDown_KeyUp"/>
+            <Label Grid.Column="2" Content="Row(s)"/>
+            <Label Grid.Column="4" Content="✖"/>
+            <xctk:IntegerUpDown x:Name="ColumnUpDown"
+                                Grid.Column="6"
+                                Minimum="1" 
+                                ValueChanged="ColumnUpDown_ValueChanged"
+                                DefaultValue="2"
+                                DisplayDefaultValueOnEmptyText="true"
+                                KeyUp="ColumnUpDown_KeyUp"/>
+            <Label Grid.Column="7" Content="Column(s)"/>
+        </Grid>
+
+        <Label x:Name="WarningLabel" 
+               HorizontalAlignment="Center"
+               Grid.Row="4" Content="Warning! Removing row(s) or column(s) could result in losing sounds!" 
+               Foreground="Red" 
+               FontWeight="Medium"
+               Visibility="Hidden"/>
+
+        <Grid Grid.Row="5" Margin="20, 20, 20, 20">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="10"/>
+                <ColumnDefinition Width="Auto"/>
+            </Grid.ColumnDefinitions>
+
+            <Button Grid.Column="1" Content="OK" Style="{StaticResource MyAccentedSquareButtonStyle}" Width="80" Height="35" Click="OKButton_Click"/>
+            <Button Grid.Column="3" Content="Cancel" Style="{StaticResource MySquareButtonStyle}" Width="80" Height="35" Click="CancelButton_Click"/>
+        </Grid>
+    </Grid>
+</soundBoard:ChildWindowBase>

SoundBoard/ButtonGridDialog.xaml.cs

@@ -0,0 +1,132 @@
+#region Usings
+
+using System.Windows;
+using System.Windows.Forms;
+using System.Windows.Input;
+
+#endregion
+
+namespace SoundBoard
+{
+    /// <summary>
+    /// Interaction logic for ButtonGridDialog.xaml
+    /// </summary>
+    internal partial class ButtonGridDialog
+    {
+        #region Constructor
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        public ButtonGridDialog()
+        {
+            InitializeComponent();
+        }
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="startingRowCount"></param>
+        /// <param name="startingColumnCount"></param>
+        public ButtonGridDialog(int startingRowCount, int startingColumnCount) : this()
+        {
+            RowCount = _startingRowCount = startingRowCount;
+            ColumnCount = _startingColumnCount = startingColumnCount;
+        }
+
+        #endregion
+
+        #region Public properties
+
+        /// <summary>
+        /// The result of the dialog
+        /// </summary>
+        public DialogResult DialogResult;
+
+        /// <summary>
+        /// Number of rows
+        /// </summary>
+        public int RowCount
+        {
+            get => RowUpDown.Value ?? default;
+            set => RowUpDown.Value = value;
+        }
+
+        /// <summary>
+        /// Number of columns
+        /// </summary>
+        public int ColumnCount
+        {
+            get => ColumnUpDown.Value ?? default;
+            set => ColumnUpDown.Value = value;
+        }
+
+        #endregion
+
+        #region Private fields
+
+        private readonly int _startingRowCount;
+
+        private readonly int _startingColumnCount;
+
+        #endregion
+
+        #region Event handlers
+
+        private void OKButton_Click(object sender, RoutedEventArgs e)
+        {
+            DialogResult = DialogResult.OK;
+            Close();
+        }
+
+        private void CancelButton_Click(object sender, RoutedEventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+
+        private void ColumnUpDown_KeyUp(object sender, System.Windows.Input.KeyEventArgs e)
+        {
+            if (e.Key == Key.Enter)
+            {
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+        }
+
+        private void RowUpDown_KeyUp(object sender, System.Windows.Input.KeyEventArgs e)
+        {
+            if (e.Key == Key.Enter)
+            {
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+        }
+
+        private void RowUpDown_ValueChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
+        {
+            ShowHideWarningLabel();
+        }
+
+        private void ColumnUpDown_ValueChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
+        {
+            ShowHideWarningLabel();
+        }
+
+        #endregion
+
+        #region Private methods
+
+        private void ShowHideWarningLabel()
+        {
+            if (WarningLabel is null == false)
+            {
+                WarningLabel.Visibility = RowUpDown.Value < _startingRowCount || ColumnUpDown.Value < _startingColumnCount
+                        ? Visibility.Visible
+                        : Visibility.Hidden;
+            }
+        }
+
+        #endregion
+    }
+}

SoundBoard/Buttons.cs

@@ -1077,6 +1077,24 @@ void timer_Elapsed(object sender, EventArgs e)
             };
         }
 
+        /// <summary>
+        /// Returns the row
+        /// </summary>
+        /// <returns></returns>
+        public int GetRow()
+        {
+            return Grid.GetRow(this);
+        }
+
+        /// <summary>
+        /// Returns the column
+        /// </summary>
+        /// <returns></returns>
+        public int GetColumn()
+        {
+            return Grid.GetColumn(this);
+        }
+
         #endregion
 
         #region Private methods

SoundBoard/ChildWindowBase.cs

@@ -0,0 +1,39 @@
+#region Usings
+
+using System.Collections.Generic;
+using MahApps.Metro.SimpleChildWindow;
+
+#endregion
+
+namespace SoundBoard
+{
+    /// <summary>
+    /// Defines a ChildWindow from which all other ChildWindows in this project shall derive
+    /// </summary>
+    internal class ChildWindowBase : ChildWindow
+    {
+        #region Constructor
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        public ChildWindowBase()
+        {
+            _instances.Add(this);
+        }
+
+        #endregion
+
+        #region Public properties
+
+        public static IEnumerable<ChildWindowBase> Instances => _instances;
+
+        #endregion
+
+        #region Private fields
+
+        private static readonly List<ChildWindowBase> _instances = new List<ChildWindowBase>();
+
+        #endregion
+    }
+}

SoundBoard/Extensions.cs

@@ -90,6 +90,85 @@ public static bool IsSelectedItem(this TabItem tabItem)
         {
             return tabItem == (tabItem.Parent as TabControl)?.SelectedItem;
         }
+
+        #region Rows property
+
+        /// <summary>
+        /// Get the Rows property
+        /// </summary>
+        /// <param name="tabItem"></param>
+        /// <returns></returns>
+        public static int GetRows(this TabItem tabItem)
+        {
+            if (_rows.TryGetValue(tabItem, out int result))
+            {
+                return result;
+            }
+            else return GetDefaultRows(tabItem);
+        }
+
+        /// <summary>
+        /// Set the Rows property
+        /// </summary>
+        /// <param name="tabItem"></param>
+        /// <param name="value"></param>
+        public static void SetRows(this TabItem tabItem, int value)
+        {
+            _rows[tabItem] = value;
+        }
+
+        /// <summary>
+        /// Get the default value for the Rows property
+        /// </summary>
+        /// <param name="tabItem"></param>
+        public static int GetDefaultRows(this TabItem tabItem)
+        {
+            return 5;
+        }
+
+        private static readonly Dictionary<TabItem, int> _rows = new Dictionary<TabItem, int>();
+
+        #endregion
+
+        #region Columns property
+
+        /// <summary>
+        /// Get the Columns property
+        /// </summary>
+        /// <param name="tabItem"></param>
+        /// <returns></returns>
+        public static int GetColumns(this TabItem tabItem)
+        {
+            if (_columns.TryGetValue(tabItem, out int result))
+            {
+                return result;
+            }
+            else return GetDefaultColumns(tabItem);
+        }
+
+        /// <summary>
+        /// Set the Columns property
+        /// </summary>
+        /// <param name="tabItem"></param>
+        /// <param name="value"></param>
+        public static void SetColumns(this TabItem tabItem, int value)
+        {
+            _columns[tabItem] = value;
+        }
+
+        /// <summary>
+        /// Get the default value for the Columns property
+        /// </summary>
+        /// <param name="tabItem"></param>
+        /// <returns></returns>
+        public static int GetDefaultColumns(this TabItem tabItem)
+        {
+            return 2;
+        }
+
+        private static readonly Dictionary<TabItem, int> _columns = new Dictionary<TabItem, int>();
+
+        #endregion
     }
 
     #endregion