Admin notes (#7259)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Client/Administration/UI/Notes/AdminNotesEui.cs

@@ -0,0 +1,42 @@
+using Content.Client.Eui;
+using Content.Shared.Administration.Notes;
+using Content.Shared.Eui;
+using JetBrains.Annotations;
+using static Content.Shared.Administration.Notes.AdminNoteEuiMsg;
+
+namespace Content.Client.Administration.UI.Notes;
+
+[UsedImplicitly]
+public sealed class AdminNotesEui : BaseEui
+{
+    public AdminNotesEui()
+    {
+        NoteWindow = new AdminNotesWindow();
+        NoteControl = NoteWindow.Notes;
+
+        NoteControl.OnNoteChanged += (id, text) => SendMessage(new EditNoteRequest(id, text));
+        NoteControl.OnNewNoteEntered += text => SendMessage(new CreateNoteRequest(text));
+        NoteControl.OnNoteDeleted += id => SendMessage(new DeleteNoteRequest(id));
+    }
+
+    private AdminNotesWindow NoteWindow { get; }
+
+    private AdminNotesControl NoteControl { get; }
+
+    public override void HandleState(EuiStateBase state)
+    {
+        if (state is not AdminNotesEuiState s)
+        {
+            return;
+        }
+
+        NoteWindow.SetTitlePlayer(s.NotedPlayerName);
+        NoteControl.SetNotes(s.Notes);
+        NoteControl.SetPermissions(s.CanCreate, s.CanDelete, s.CanEdit);
+    }
+
+    public override void Opened()
+    {
+        NoteWindow.OpenCentered();
+    }
+}