Gas tanks and masks (#2409)

Co-authored-by: a.rudenko <creadth@gmail.com>
Co-authored-by: creadth <creadth@users.noreply.github.com>
Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

Content.Client/UserInterface/Atmos/GasTank/GasTankBoundUserInterface.cs

@@ -0,0 +1,50 @@
+using Content.Shared.GameObjects.Components.Atmos.GasTank;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects.Components.UserInterface;
+using Robust.Shared.GameObjects.Components.UserInterface;
+
+namespace Content.Client.UserInterface.Atmos.GasTank
+{
+    [UsedImplicitly]
+    public class GasTankBoundUserInterface
+        : BoundUserInterface
+    {
+        public GasTankBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) :
+            base(owner, uiKey)
+        {
+        }
+
+        private GasTankWindow _window;
+
+        public void SetOutputPressure(in float value)
+        {
+            SendMessage(new GasTankSetPressureMessage {Pressure = value});
+        }
+
+        public void ToggleInternals()
+        {
+            SendMessage(new GasTankToggleInternalsMessage());
+        }
+
+        protected override void Open()
+        {
+            base.Open();
+            _window = new GasTankWindow(this);
+            _window.OnClose += Close;
+            _window.OpenCentered();
+        }
+
+        protected override void UpdateState(BoundUserInterfaceState state)
+        {
+            base.UpdateState(state);
+            _window.UpdateState((GasTankBoundUserInterfaceState) state);
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            _window.Close();
+        }
+    }
+}