handle select event in widget canvas

Runtime/engine/WidgetCanvas.cs

 using UnityEngine;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;
-using Image = UnityEngine.UI.Image;
 using Rect = UnityEngine.Rect;
 
 namespace Unity.UIWidgets.engine
 
         private void Update()
         {
+            if (EventSystem.current != null && EventSystem.current.currentSelectedGameObject != gameObject)
+            {
+                unfocusIfNeeded();
+            }
             if (_mouseEntered && (_lastMouseMove.x != Input.mousePosition.x || _lastMouseMove.y != Input.mousePosition.y))
             {
                 this.OnMouseOver();
             }
         }
 
-
         private void OnGUI()
         {
             if (Event.current.type == EventType.Repaint)
 
         public void OnPointerDown(PointerEventData eventData)
         {
+            EventSystem.current.SetSelectedGameObject(gameObject, eventData);
             var position = getPointPosition(eventData);
             this._windowAdapter.PostPointerEvent(new PointerData(
                 timeStamp: DateTime.Now,
                 physicalX: position.x,
                 physicalY: position.y
             ));
+        }
+
+        private void unfocusIfNeeded()
+        {
+            using (_windowAdapter.getScope())
+            {
+                var focusNode = WidgetsBinding.instance.focusManager.currentFocus;
+                if (focusNode != null)
+                {
+                    focusNode.unfocus();
+                }
+            }
         }
     }
 }

Runtime/widgets/editable_text.cs

         const int _kObscureShowLatestCharCursorTicks = 3;
         private static TimeSpan _kCursorBlinkHalfPeriod = TimeSpan.FromMilliseconds(500);
         private Timer _cursorTimer;
-        private ValueNotifier<bool> _showCursor = new ValueNotifier<bool>(true);
+        private ValueNotifier<bool> _showCursor = new ValueNotifier<bool>(false);
         private GlobalKey _editableKey = GlobalKey.key();
         private bool _didAutoFocus = false;
         public ScrollController _scrollController = new ScrollController();

Runtime/widgets/focus_manager.cs

             D.assert(rootScope._firstChild == null);  
             D.assert(rootScope._lastChild == null);
         }
+        
+        public readonly FocusScopeNode rootScope = new FocusScopeNode();
-        public readonly FocusScopeNode rootScope = new FocusScopeNode();
+        public FocusNode currentFocus
+        {
+            get { return _currentFocus; }
+        }
+        
-        
         
         internal void _willDisposeFocusNode(FocusNode node) {
             D.assert(node != null);
-        
         
         bool _haveScheduledUpdate = false;
         internal void _markNeedsUpdate() {
             Window.instance.scheduleMicrotask(_update);
         }
 
-        
         internal FocusNode _findNextFocus() {
             FocusScopeNode scope = rootScope;
             while (scope._firstChild != null)

Samples/UIWidgetSample/ToDoAppCanvas.cs

 using Unity.UIWidgets.rendering;
 using Unity.UIWidgets.ui;
 using Unity.UIWidgets.widgets;
+using Color = Unity.UIWidgets.ui.Color;
 using TextStyle = Unity.UIWidgets.painting.TextStyle;
 
 namespace UIWidgetsSample
+        
         public class ToDoListApp : StatefulWidget
         {
             public ToDoListApp(Key key = null) : base(key)
             private List<ToDoItem> items = new List<ToDoItem>();
             private int nextId = 0;
             private TextEditingController controller = new TextEditingController("");
+            private FocusNode _focusNode;
+            public override void initState() {
+                base.initState();
+                _focusNode = new FocusNode();
+            }
+
+            public override void dispose()
+            {
+                _focusNode.dispose();
+                base.dispose();
+            }
+            
             private Widget title()
             {
                 return new Text("ToDo App", textAlign: TextAlign.center, 
                                 padding: EdgeInsets.fromLTRB(8, 0, 8, 0),
                                 child: new EditableText(maxLines: 1,
                                     controller: controller,
-                                   
+                                    autofocus: true,
                                     focusNode: new FocusNode(),
                                     style: new TextStyle(
                                         fontSize: 18,
                         {
                             title(),
                             textInput(),
+                      //      textInput(),
                             contents(),
                         }
                     )

Samples/UIWidgetSample/SelectOnStart.cs

+using UnityEngine;
+using UnityEngine.EventSystems;
+
+namespace UIWidgetsSample
+{
+    public class SelectOnStart: MonoBehaviour
+    {
+        private void Start()
+        {
+            EventSystem.current.SetSelectedGameObject(gameObject);
+        }
+    }
+}

Samples/UIWidgetSample/SelectOnStart.cs.meta

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+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Samples/UIWidgetSample/TextInput.unity.meta

+fileFormatVersion: 2
+guid: a677aa8bdebec4af786ef0846602c037
+DefaultImporter:
+  externalObjects: {}
+  userData: 
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Samples/UIWidgetSample/TextInputCanvas.cs

+using System.Collections.Generic;
+using Unity.UIWidgets.engine;
+using Unity.UIWidgets.foundation;
+using Unity.UIWidgets.painting;
+using Unity.UIWidgets.rendering;
+using Unity.UIWidgets.ui;
+using Unity.UIWidgets.widgets;
+using TextStyle = Unity.UIWidgets.painting.TextStyle;
+
+namespace UIWidgetsSample
+{
+    public class TextInputCanvas: WidgetCanvas
+    {
+        public class TextInputSample : StatefulWidget
+        {
+            public readonly string title;
+            public TextInputSample(Key key = null, string title = null) : base(key)
+            {
+                this.title = title;
+            }
+
+            public override State createState()
+            {
+                return new _TextInputSampleState();
+            }
+        }
+
+        protected override Widget getWidget()
+        {
+            return new TextInputSample(key:null, title:gameObject.name);
+        }
+
+        class _TextInputSampleState : State<TextInputSample>
+        {
+            public class ToDoItem
+            {
+                public int id;
+                public string content;
+            }
+
+            private int nextId = 0;
+            private TextEditingController titleController = new TextEditingController("");
+            private TextEditingController descController = new TextEditingController("");
+            private FocusNode _titleFocusNode;
+            private FocusNode _descFocusNode;
+
+            public override void initState() {
+                base.initState();
+                _titleFocusNode = new FocusNode();
+                _descFocusNode = new FocusNode();
+            }
+
+            public override void dispose()
+            {
+                _titleFocusNode.dispose();
+                _descFocusNode.dispose();
+                base.dispose();
+            }
+            
+            private Widget title()
+            {
+                return new Text(widget.title??"", textAlign: TextAlign.center, 
+                    style: new TextStyle(fontSize:24, fontWeight: FontWeight.w700));
+            }
+            
+            private Widget titleInput()
+            {
+                return new Row(                
+                    children: new List<Widget>(
+                    )
+                    {
+                        new SizedBox(width:100, child: new Text("Title")),
+                        new Flexible(child: new Container(
+                            decoration: new BoxDecoration(border: Border.all(new Color(0xFF000000), 1)),
+                            padding: EdgeInsets.fromLTRB(8, 0, 8, 0),
+                            child: new EditableText(maxLines: 1,
+                                controller: titleController,
+                                autofocus: true,
+                                focusNode: new FocusNode(),
+                                style: new TextStyle(
+                                    fontSize: 18,
+                                    height: 1.5f,
+                                    color: new Color(0xFF1389FD)
+                                ),
+                                selectionColor: Color.fromARGB(255, 255, 0, 0),
+                                cursorColor: Color.fromARGB(255, 0, 0, 0))
+                        )),
+                        
+                    }
+                );
+            }
+
+            private Widget descInput()
+            {
+                return new Container(
+                    margin: EdgeInsets.fromLTRB(0, 10, 0, 10),
+                    child: new Row(                
+                    children: new List<Widget>(
+                    )
+                    {
+                        new SizedBox(width:100, child: new Text("Description")),
+                        new Flexible(child: new Container(
+                            decoration: new BoxDecoration(border: Border.all(new Color(0xFF000000), 1)),
+                            padding: EdgeInsets.fromLTRB(8, 0, 8, 0),
+                            child: new EditableText(maxLines: 1,
+                                controller: descController,
+                                focusNode: new FocusNode(),
+                                style: new TextStyle(
+                                    fontSize: 18,
+                                    height: 1.5f,
+                                    color: new Color(0xFF1389FD)
+                                ),
+                                selectionColor: Color.fromARGB(255, 255, 0, 0),
+                                cursorColor: Color.fromARGB(255, 0, 0, 0))
+                        )),
+                        
+                    }
+                ));
+            }
+            public override Widget build(BuildContext context)
+            {
+                var container = new Container(
+                    padding: EdgeInsets.all(10),
+                    decoration: new BoxDecoration(color:new Color(0x7F000000), border:Border.all(color: Color.fromARGB(255, 255, 0, 0), width: 5),
+                        borderRadius: BorderRadius.all(2)),
+                    child: new Column(
+                        crossAxisAlignment: CrossAxisAlignment.stretch,
+                        children: new List<Widget>
+                        {
+                            title(),
+                            titleInput(),
+                            descInput(),
+                        }
+                    )
+                );
+                return container;
+            }
+        }
+    }
+
+}

Samples/UIWidgetSample/TextInputCanvas.cs.meta

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