Adds disposal mailing units (again) (#7630)

Content.Client/Disposal/UI/MailingUnitWindow.xaml.cs

@@ -0,0 +1,50 @@
+using Content.Shared.Disposal;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+
+namespace Content.Client.Disposal.UI
+{
+    /// <summary>
+    /// Client-side UI used to control a <see cref="MailingUnitComponent"/>
+    /// </summary>
+    [GenerateTypedNameReferences]
+    public sealed partial class MailingUnitWindow : DefaultWindow
+    {
+        public MailingUnitWindow()
+        {
+            RobustXamlLoader.Load(this);
+        }
+
+        /// <summary>
+        /// Update the interface state for the disposals window.
+        /// </summary>
+        /// <returns>true if we should stop updating every frame.</returns>
+        public bool UpdateState(MailingUnitBoundUserInterfaceState state)
+        {
+            var disposalState = state.DisposalState;
+
+            Title = Loc.GetString("ui-mailing-unit-window-title", ("tag", state.Tag ?? " "));
+            UnitState.Text = disposalState.UnitState;
+            var pressureReached = PressureBar.UpdatePressure(disposalState.FullPressureTime);
+            Power.Pressed = disposalState.Powered;
+            Engage.Pressed = disposalState.Engaged;
+
+            //UnitTag.Text = state.Tag;
+            Target.Text = state.Target;
+
+            TargetListContainer.Clear();
+            foreach (var target in state.TargetList)
+            {
+                TargetListContainer.AddItem(target);
+            }
+
+            return !disposalState.Powered || pressureReached;
+        }
+
+        public bool UpdatePressure(TimeSpan stateFullPressureTime)
+        {
+            return PressureBar.UpdatePressure(stateFullPressureTime);
+        }
+    }
+}