Init

Assets/ASSETS/Blocks/MultiplayerSession/Runtime/CreateSession/CreateSessionElement.cs

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+using System.Collections.Generic;
+using Blocks.Common;
+using Blocks.Sessions.Common;
+using Unity.Properties;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace Blocks.Sessions
+{
+    [UxmlElement]
+    public partial class CreateSessionElement : VisualElement
+    {
+        const string k_EnterSessionNamePlaceholder = "Enter Session Name";
+        const string k_CreateButtonText = "CREATE";
+
+        [CreateProperty, UxmlAttribute]
+        public SessionSettings SessionSettings
+        {
+            get => m_SessionSettings;
+            set
+            {
+                if (m_SessionSettings == value)
+                    return;
+
+                m_SessionSettings = value;
+                if (panel != null)
+                    UpdateBindings();
+            }
+        }
+        SessionSettings m_SessionSettings;
+
+        CreateSessionViewModel m_ViewModel;
+
+        readonly List<DataBinding> m_Bindings = new();
+
+        public CreateSessionElement()
+        {
+            AddToClassList(BlocksTheme.ContainerHorizontal);
+
+            var enabledBinding = new DataBinding
+            {
+                dataSourcePath = new PropertyPath(nameof(m_ViewModel.CanRegisterSession)),
+                bindingMode = BindingMode.ToTarget
+            };
+            SetBinding(new BindingId(nameof(enabledSelf)), enabledBinding);
+            m_Bindings.Add(enabledBinding);
+
+            var sessionNameTextField = new TextField
+            {
+                textEdition =
+                {
+                    placeholder = k_EnterSessionNamePlaceholder,
+                    hidePlaceholderOnFocus = true
+                }
+            };
+            sessionNameTextField.AddToClassList(BlocksTheme.TextField);
+            sessionNameTextField.AddToClassList(BlocksTheme.SpaceRight);
+            var sessionNameBinding = new DataBinding
+            {
+                dataSourcePath = new PropertyPath(nameof(m_ViewModel.SessionName)),
+                bindingMode = BindingMode.ToSource
+            };
+            sessionNameTextField.SetBinding("value", sessionNameBinding);
+            Add(sessionNameTextField);
+            m_Bindings.Add(sessionNameBinding);
+
+            var createSessionButton = new Button
+            {
+                text = k_CreateButtonText
+            };
+            createSessionButton.AddToClassList(BlocksTheme.Button);
+            var createSessionBinding = new DataBinding
+            {
+                dataSourcePath = new PropertyPath(nameof(m_ViewModel.HasSessionName)),
+                bindingMode = BindingMode.ToTarget
+            };
+            createSessionButton.SetBinding(new BindingId(nameof(enabledSelf)), createSessionBinding);
+            createSessionButton.clicked += CreateSession;
+            Add(createSessionButton);
+            m_Bindings.Add(createSessionBinding);
+
+            RegisterCallback<AttachToPanelEvent>(_ => UpdateBindings());
+            RegisterCallback<DetachFromPanelEvent>(_ => CleanupBindings());
+        }
+
+        void CreateSession()
+        {
+            if (!SessionSettings)
+            {
+                Debug.LogError("SessionSettings is null, it needs to be assigned in the uxml.");
+                return;
+            }
+            if (!m_ViewModel.AreMultiplayerServicesInitialized())
+            {
+                Debug.LogError("Multiplayer Services are not initialized. You can initialize them with default settings by adding a ServicesInitialization and PlayerAuthentication components in your scene.");
+                return;
+            }
+
+            _ = m_ViewModel.CreateSessionAsync(SessionSettings.ToSessionOptions());
+        }
+
+        void UpdateBindings()
+        {
+            CleanupBindings();
+
+            m_ViewModel = new CreateSessionViewModel(SessionSettings?.sessionType);
+            foreach (var binding in m_Bindings)
+            {
+                binding.dataSource = m_ViewModel;
+            }
+        }
+
+        void CleanupBindings()
+        {
+            m_ViewModel?.Dispose();
+            m_ViewModel = null;
+
+            foreach (var binding in m_Bindings)
+            {
+                binding.dataSource = null;
+            }
+        }
+    }
+}

Assets/ASSETS/Blocks/MultiplayerSession/Runtime/CreateSession/CreateSessionElement.cs.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: 975cfeeaa0b804d48ae43d4abf031ebf
+AssetOrigin:
+  serializedVersion: 1
+  productId: 341930
+  packageName: Unity Building Block - Multiplayer Session
+  packageVersion: 1.0
+  assetPath: Assets/Blocks/MultiplayerSession/Runtime/CreateSession/CreateSessionElement.cs
+  uploadId: 814574

Assets/ASSETS/Blocks/MultiplayerSession/Runtime/CreateSession/CreateSessionViewModel.cs

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+using System;
+using System.Runtime.CompilerServices;
+using System.Threading.Tasks;
+using Unity.Properties;
+using Unity.Services.Multiplayer;
+using UnityEngine.UIElements;
+
+namespace Blocks.Sessions
+{
+    public class CreateSessionViewModel : IDisposable, IDataSourceViewHashProvider, INotifyBindablePropertyChanged
+    {
+        SessionObserver m_SessionObserver;
+        ISession m_Session;
+        long m_UpdateVersion;
+
+        [CreateProperty]
+        public bool CanRegisterSession
+        {
+            get => m_CanRegisterSession;
+            private set
+            {
+                if (m_CanRegisterSession == value)
+                    return;
+
+                m_CanRegisterSession = value;
+                ++m_UpdateVersion;
+                Notify();
+            }
+        }
+        bool m_CanRegisterSession = true;
+
+        [CreateProperty]
+        public bool HasSessionName
+        {
+            get => m_HasSessionName;
+            private set
+            {
+                if (m_HasSessionName == value)
+                    return;
+
+                m_HasSessionName = value;
+                Notify();
+            }
+        }
+        bool m_HasSessionName;
+
+        [CreateProperty]
+        public string SessionName
+        {
+            get => m_SessionName;
+            private set
+            {
+                if (m_SessionName == value)
+                    return;
+
+                m_SessionName = value;
+
+                HasSessionName = m_SessionName != "";
+
+                ++m_UpdateVersion;
+                Notify();
+            }
+        }
+        string m_SessionName;
+
+        public CreateSessionViewModel(string sessionType)
+        {
+            m_SessionObserver = new SessionObserver(sessionType);
+
+            m_SessionObserver.AddingSessionStarted += OnAddingSessionStarted;
+            m_SessionObserver.SessionAdded += OnSessionAdded;
+            m_SessionObserver.AddingSessionFailed += OnAddingSessionFailed;
+
+            if (m_SessionObserver.Session != null)
+            {
+                OnSessionAdded(m_SessionObserver.Session);
+            }
+        }
+        void OnAddingSessionFailed(AddingSessionOptions session, SessionException exception) => CanRegisterSession = true;
+        void OnAddingSessionStarted(AddingSessionOptions session) => CanRegisterSession = false;
+
+        void OnSessionAdded(ISession session)
+        {
+            m_Session = session;
+            m_Session.RemovedFromSession += OnSessionRemoved;
+            m_Session.Deleted += OnSessionRemoved;
+            CanRegisterSession = false;
+        }
+
+        void OnSessionRemoved()
+        {
+            m_Session.RemovedFromSession -= OnSessionRemoved;
+            m_Session.Deleted -= OnSessionRemoved;
+            m_Session = null;
+            CanRegisterSession = true;
+        }
+
+        public bool AreMultiplayerServicesInitialized()
+        {
+            return MultiplayerService.Instance != null;
+        }
+
+        public async Task<IHostSession> CreateSessionAsync(SessionOptions sessionOptions)
+        {
+            sessionOptions.Name = SessionName;
+            return await MultiplayerService.Instance.CreateSessionAsync(sessionOptions);
+        }
+
+        public void Dispose()
+        {
+            if (m_SessionObserver != null)
+            {
+                m_SessionObserver.AddingSessionStarted -= OnAddingSessionStarted;
+                m_SessionObserver.SessionAdded -= OnSessionAdded;
+                m_SessionObserver.AddingSessionFailed -= OnAddingSessionFailed;
+                m_SessionObserver.Dispose();
+                m_SessionObserver = null;
+            }
+            if (m_Session != null)
+            {
+                m_Session.RemovedFromSession -= OnSessionRemoved;
+                m_Session.Deleted -= OnSessionRemoved;
+                m_Session = null;
+            }
+        }
+
+        /// <summary>
+        /// This method is used by UIToolkit to determine if any data bound to the UI has changed.
+        /// Instead of hashing the data, an m_UpdateVersion counter is incremented when changes occur.
+        /// </summary>
+        public long GetViewHashCode() => m_UpdateVersion;
+
+        /// <summary>
+        /// Suggested implementation of INotifyBindablePropertyChanged from UIToolkit.
+        /// </summary>
+        public event EventHandler<BindablePropertyChangedEventArgs> propertyChanged;
+        void Notify([CallerMemberName] string property = null) =>
+            propertyChanged?.Invoke(this, new BindablePropertyChangedEventArgs(property));
+    }
+}

Assets/ASSETS/Blocks/MultiplayerSession/Runtime/CreateSession/CreateSessionViewModel.cs.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: 99041548465e15845b967682ac2b66a1
+AssetOrigin:
+  serializedVersion: 1
+  productId: 341930
+  packageName: Unity Building Block - Multiplayer Session
+  packageVersion: 1.0
+  assetPath: Assets/Blocks/MultiplayerSession/Runtime/CreateSession/CreateSessionViewModel.cs
+  uploadId: 814574