Vending Machines (#296)

* Vending Machines

* addressed review

Content.Client/GameObjects/Components/VendingMachines/VendingMachineBoundUserInterface.cs

@@ -0,0 +1,68 @@
+using Content.Client.VendingMachines;
+using Content.Shared.GameObjects.Components.VendingMachines;
+using Robust.Client.GameObjects.Components.UserInterface;
+using Robust.Shared.GameObjects.Components.UserInterface;
+using Robust.Shared.IoC;
+using Robust.Shared.Prototypes;
+using Robust.Shared.ViewVariables;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Content.Client.GameObjects.Components.VendingMachines
+{
+    class VendingMachineBoundUserInterface : BoundUserInterface
+    {
+        [ViewVariables]
+        private VendingMachineMenu _menu;
+
+        public SharedVendingMachineComponent VendingMachine { get; private set; }
+
+        public VendingMachineBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) : base(owner, uiKey)
+        {
+            SendMessage(new SharedVendingMachineComponent.InventorySyncRequestMessage());
+        }
+
+        protected override void Open()
+        {
+            base.Open();
+
+            if(!Owner.Owner.TryGetComponent(out SharedVendingMachineComponent vendingMachine))
+            {
+                return;
+            }
+
+            VendingMachine = vendingMachine;
+
+            _menu = new VendingMachineMenu() { Owner = this, Title = Owner.Owner.Name };
+            _menu.Populate(VendingMachine.Inventory);
+
+            _menu.OnClose += Close;
+            _menu.OpenCentered();
+        }
+
+        public void Eject(string ID)
+        {
+            SendMessage(new SharedVendingMachineComponent.VendingMachineEjectMessage(ID));
+        }
+
+        protected override void ReceiveMessage(BoundUserInterfaceMessage message)
+        {
+            switch(message)
+            {
+                case SharedVendingMachineComponent.VendingMachineInventoryMessage msg:
+                    _menu.Populate(msg.Inventory);
+                    break;
+            }
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+            if(!disposing) { return; }
+            _menu?.Dispose();
+        }
+    }
+}