Added ability to move sub tracks/channels up/down

Author: MattEqualsCoder

MSUScripter/Services/ControlServices/MsuSongMsuPcmInfoPanelService.cs

@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Linq;
 using AvaloniaControls.ControlServices;
 using MSUScripter.Configs;
 using MSUScripter.ViewModels;
@@ -171,6 +172,49 @@ public void UpdateLoopSettings(PyMusicLooperResultViewModel loopResult)
         _model.TrimEnd = loopResult.LoopEnd;
     }
 
+    public void UpdateContextMenuOptions()
+    {
+        if (_model.IsTopLevel)
+        {
+            _model.CanMoveUp = false;
+            _model.CanMoveDown = false;
+            return;
+        }
+
+        var parentObjectList = _model.IsSubChannel
+            ? _model.ParentMsuPcmInfo!.SubChannels.ToList()
+            : _model.ParentMsuPcmInfo!.SubTracks.ToList();
+
+        _model.CanMoveUp = parentObjectList.IndexOf(_model) > 0;
+        _model.CanMoveDown = parentObjectList.IndexOf(_model) < parentObjectList.Count - 1;
+    }
+
+    public void MoveUp()
+    {
+        if (!_model.CanMoveUp) return;
+        
+        var parentObjectList = _model.IsSubChannel
+            ? _model.ParentMsuPcmInfo!.SubChannels
+            : _model.ParentMsuPcmInfo!.SubTracks;
+
+        var currentIndex = parentObjectList.IndexOf(_model);
+        parentObjectList.Remove(_model);
+        parentObjectList.Insert(currentIndex - 1, _model);
+    }
+
+    public void MoveDown()
+    {
+        if (!_model.CanMoveDown) return;
+        
+        var parentObjectList = _model.IsSubChannel
+            ? _model.ParentMsuPcmInfo!.SubChannels
+            : _model.ParentMsuPcmInfo!.SubTracks;
+
+        var currentIndex = parentObjectList.IndexOf(_model);
+        parentObjectList.Remove(_model);
+        parentObjectList.Insert(currentIndex + 1, _model);
+    }
+
     public bool HasLoopDetails()
     {
         return _model.Loop > 0 || _model.TrimEnd > 0;

MSUScripter/ViewModels/MsuSongMsuPcmInfoViewModel.cs

@@ -108,6 +108,9 @@ public MsuSongMsuPcmInfoViewModel TopLevel
             return topModel ?? this;
         }
     }
+    
+    [SkipConvert, Reactive] public bool CanMoveUp { get; set; }
+    [SkipConvert, Reactive] public bool CanMoveDown { get; set; }
 
     public bool CanDelete => !IsTopLevel;
 

MSUScripter/Views/MsuSongMsuPcmInfoPanel.axaml

@@ -67,6 +67,12 @@
                                 <MenuItem Header="Paste MsuPcm++ Details from Clipboard" Name="PasteMenuItem"
                                           Click="PasteMenuItem_OnClick" 
                                 ></MenuItem>
+                                <MenuItem Header="Move Up" Name="MoveUpMenuItem" IsEnabled="{Binding CanMoveUp}" IsVisible="{Binding !IsTopLevel}"
+                                          Click="MoveUpMenuItem_OnClick"
+                                ></MenuItem>
+                                <MenuItem Header="Move Down" Name="MoveDownMenuItem" IsEnabled="{Binding CanMoveDown}" IsVisible="{Binding !IsTopLevel}"
+                                          Click="MoveDownMenuItem_OnClick" 
+                                ></MenuItem>
                                 <MenuItem Header="{Binding RemoveText}" Name="RemoveButton" IsVisible="{Binding CanDelete}"
                                           Click="RemoveButton_OnClick" 
                                 ></MenuItem>

MSUScripter/Views/MsuSongMsuPcmInfoPanel.axaml.cs

@@ -152,10 +152,7 @@ private async void MenuButton_OnClick(object? sender, RoutedEventArgs e)
             return;
         }
 
-        if (contextMenu.Items.FirstOrDefault(x => x is MenuItem { Name: "PasteMenuItem" }) is MenuItem pasteMenuItem)
-        {
-            pasteMenuItem.IsEnabled = !string.IsNullOrEmpty((await this.GetClipboardAsync())?.Trim());    
-        }
+        await UpdateContextMenu(contextMenu);
 
         contextMenu.PlacementTarget = button;
         contextMenu.Open();
@@ -198,10 +195,7 @@ private async void ContextMenu_OnOpening(object? sender, CancelEventArgs e)
             return;
         }
 
-        if (contextMenu.Items.FirstOrDefault(x => x is MenuItem { Name: "PasteMenuItem" }) is MenuItem pasteMenuItem)
-        {
-            pasteMenuItem.IsEnabled = !string.IsNullOrEmpty((await this.GetClipboardAsync())?.Trim());    
-        }
+        await UpdateContextMenu(contextMenu);
     }
 
     private void Insert_OnClick(object? sender, RoutedEventArgs e)
@@ -228,4 +222,24 @@ private void FileControl_OnOnUpdated(object? sender, FileControlUpdatedEventArgs
     {
         _service?.ImportAudioMetadata();
     }
+
+    private async Task UpdateContextMenu(ContextMenu contextMenu)
+    {
+        if (contextMenu.Items.FirstOrDefault(x => x is MenuItem { Name: "PasteMenuItem" }) is MenuItem pasteMenuItem)
+        {
+            pasteMenuItem.IsEnabled = !string.IsNullOrEmpty((await this.GetClipboardAsync())?.Trim());    
+        }
+        
+        _service?.UpdateContextMenuOptions();
+    }
+
+    private void MoveUpMenuItem_OnClick(object? sender, RoutedEventArgs e)
+    {
+        _service?.MoveUp();
+    }
+
+    private void MoveDownMenuItem_OnClick(object? sender, RoutedEventArgs e)
+    {
+        _service?.MoveDown();
+    }
 }