Remove some BUI boilerplate (#28399)

* Remove some BUI boilerplate

- The disposals overrides got removed due to the helper method handling it.
- Replace window creation with CreateWindow helper.
- Fixed some stinky code which would cause exceptions.

* More

* moar

* weh

* done

* More BUIs

* More updates

* weh

* moar

* look who it is

* weh

* merge

* weh

* fixes

Content.Client/MachineLinking/UI/SignalTimerWindow.xaml.cs

@@ -9,42 +9,44 @@ namespace Content.Client.MachineLinking.UI;
 [GenerateTypedNameReferences]
 public sealed partial class SignalTimerWindow : DefaultWindow
 {
+    [Dependency] private readonly IGameTiming _timing = default!;
+
     private const int MaxTextLength = 5;
 
     public event Action<string>? OnCurrentTextChanged;
     public event Action<string>? OnCurrentDelayMinutesChanged;
     public event Action<string>? OnCurrentDelaySecondsChanged;
 
-    private readonly SignalTimerBoundUserInterface _owner;
-
     private TimeSpan? _triggerTime;
 
     private bool _timerStarted;
 
-    public SignalTimerWindow(SignalTimerBoundUserInterface owner)
+    public event Action? OnStartTimer;
+
+    public SignalTimerWindow()
     {
         RobustXamlLoader.Load(this);
-
-        _owner = owner;
+        IoCManager.InjectDependencies(this);
 
         CurrentTextEdit.OnTextChanged += e => OnCurrentTextChange(e.Text);
         CurrentDelayEditMinutes.OnTextChanged += e => OnCurrentDelayMinutesChange(e.Text);
         CurrentDelayEditSeconds.OnTextChanged += e => OnCurrentDelaySecondsChange(e.Text);
-        StartTimer.OnPressed += _ => OnStartTimer();
+        StartTimer.OnPressed += _ => StartTimerWeh();
     }
 
-    public void OnStartTimer()
+    private void StartTimerWeh()
     {
         if (!_timerStarted)
         {
             _timerStarted = true;
-            _triggerTime = _owner.GetCurrentTime() + GetDelay();
+            _triggerTime = _timing.CurTime + GetDelay();
         }
         else
         {
             SetTimerStarted(false);
         }
-        _owner.OnStartTimer();
+
+        OnStartTimer?.Invoke();
     }
 
     protected override void FrameUpdate(FrameEventArgs args)
@@ -54,9 +56,9 @@ public sealed partial class SignalTimerWindow : DefaultWindow
         if (!_timerStarted || _triggerTime == null)
             return;
 
-        if (_owner.GetCurrentTime() < _triggerTime.Value)
+        if (_timing.CurTime < _triggerTime.Value)
         {
-            StartTimer.Text = TextScreenSystem.TimeToString(_triggerTime.Value - _owner.GetCurrentTime());
+            StartTimer.Text = TextScreenSystem.TimeToString(_triggerTime.Value - _timing.CurTime);
         }
         else
         {