Merge pull request #78 from Unity-Technologies/zxw/gallery

Zxw/gallery

Samples/UIWidgetsSamples_2019_4/Assets/Script/TextTest.cs

             public override Widget build(BuildContext context)
             {
                 return new CupertinoApp(
-                    home: new HomeScreen()//new DetailScreen1("ok")
+                    home: new HomeScreen() //new DetailScreen1("ok")
                     //color: Color.white
                 );
             }

Samples/UIWidgetsSamples_2019_4/Assets/UIWidgetsGallery/gallery/about.cs

     }
     public class _LinkTextSpan : TextSpan
     {
-        private static void launch(string url)
-        {
-            Process.Start(url);
-        }
-
-            recognizer: new TapGestureRecognizer {onTap = () => { launch(url); }}
+            recognizer: new TapGestureRecognizer {onTap = () => { BrowserUtils.launch(url); }}
         )
         {
         }

Samples/UIWidgetsSamples_2019_4/Assets/UIWidgetsGallery/gallery/backdrop.cs

         private AnimationController _controller;
         private Animation<float> _frontOpacity;
 
-        private static readonly Animatable<float> _frontOpacityTween = new Tween<float>(begin: 0.2f, end: 1.0f)
+        private static readonly Animatable<float> _frontOpacityTween = new FloatTween(begin: 0.2f, end: 1.0f)
             .chain(new CurveTween(curve: new Interval(0.0f, 0.4f, curve: Curves.easeInOut)));
 
         public override void initState()

Samples/UIWidgetsSamples_2019_4/Assets/UIWidgetsGallery/gallery/demos.cs

 using System;
 using System.Collections.Generic;
 using System.Linq;
+using UIWidgetsGallery.demo.material;
+using UnityEngine;
 
 namespace UIWidgetsGallery.gallery
 {
         {
             List<GalleryDemo> galleryDemos = new List<GalleryDemo>
             {
-                
+                new GalleryDemo(
+                    title: "Backdrop",
+                    subtitle: $"Select a front layer from back layer",
+                    icon: GalleryIcons.backdrop,
+                    category: GalleryDemoCategory._kMaterialComponents,
+                    routeName: BackdropDemo.routeName,
+                    buildRoute: (BuildContext context) => new BackdropDemo()
+                ),
+                new GalleryDemo(
+                    title: "Banner",
+                    subtitle: "Displaying a banner within a list",
+                    icon: GalleryIcons.lists_leave_behind,
+                    category: GalleryDemoCategory._kMaterialComponents,
+                    routeName: BannerDemo.routeName,
+                    documentationUrl: "https://api.flutter.dev/flutter/material/MaterialBanner-class.html",
+                    buildRoute: (BuildContext context) => new BannerDemo()
+                ),
+                new GalleryDemo(
+                    title: "Bottom app bar",
+                    subtitle: "Optional floating action button notch",
+                    icon: GalleryIcons.bottom_app_bar,
+                    category: GalleryDemoCategory._kMaterialComponents,
+                    routeName: BottomAppBarDemo.routeName,
+                    documentationUrl: "https://docs.flutter.io/flutter/material/BottomAppBar-class.html",
+                    buildRoute: (BuildContext context) => new BottomAppBarDemo()
+                ),
+                new GalleryDemo(
+                    title: "Bottom navigation",
+                    subtitle: "Bottom navigation with cross-fading views",
+                    icon: GalleryIcons.bottom_navigation,
+                    category: GalleryDemoCategory._kMaterialComponents,
+                    routeName: BottomNavigationDemo.routeName,
+                    documentationUrl: "https://docs.flutter.io/flutter/material/BottomNavigationBar-class.html",
+                    buildRoute: (BuildContext context) => new BottomNavigationDemo()
+                )
             };
 
             return galleryDemos;
 
-        public static readonly List<GalleryDemoCategory> kAllGalleryDemoCategories =
-        kAllGalleryDemos.Select<GalleryDemo, GalleryDemoCategory>((GalleryDemo demo) => demo.category).ToList();
+        public static readonly HashSet<GalleryDemoCategory> kAllGalleryDemoCategories =
+        new HashSet<GalleryDemoCategory>(kAllGalleryDemos.Select<GalleryDemo, GalleryDemoCategory>((GalleryDemo demo) => demo.category).ToList());
 
 
         static Dictionary<GalleryDemoCategory, List<GalleryDemo>> _generateCategoryToDemos()

Samples/UIWidgetsSamples_2019_4/Assets/UIWidgetsGallery/gallery/updater.cs

 
     internal class UpdaterState : State<Updater>
     {
-        private static void launch(string url)
-        {
-            Process.Start(url);
-        }
-
         public override void initState()
         {
             base.initState();
                     material_.showDialog<bool>(context: this.context, builder: this._buildDialog).then(wantsUpdate =>
                     {
                         if (wantsUpdate != null && (bool) wantsUpdate)
-                            launch((string) updateUrl);
+                            BrowserUtils.launch((string) updateUrl);
                     });
             });
         }

Samples/UIWidgetsSamples_2019_4/Assets/WidgetsSample/NavigationSample.cs

         {
             ui_.runApp(new MyApp());
         }
-        
-        
-        
-            
+
         class MyApp : StatelessWidget
         {
             public override Widget build(BuildContext context)
             }
         }
     }
-    
-    public class CustomButton : StatelessWidget {
-        public CustomButton(
-            Key key = null,
-            GestureTapCallback onPressed = null,
-            EdgeInsets padding = null,
-            Color backgroundColor = null,
-            Widget child = null
-        ) : base(key: key) {
-            this.onPressed = onPressed;
-            this.padding = padding ?? EdgeInsets.all(8.0f);
-            this.backgroundColor = backgroundColor ?? Colors.white;
-            this.child = child;
-        }
-
-        public readonly GestureTapCallback onPressed;
-        public readonly EdgeInsets padding;
-        public readonly Widget child;
-        public readonly Color backgroundColor;
-
-        public override Widget build(BuildContext context) {
-            return new GestureDetector(
-                onTap: this.onPressed,
-                child: new Container(
-                    padding: this.padding,
-                    color: this.backgroundColor,
-                    child: this.child
-                )
-            );
-        }
-    }
-
 
     class HomeScreen : StatelessWidget {
         public override Widget build(BuildContext context) {

com.unity.uiwidgets/Runtime/animation/curves.cs

                 start: 0.0f, end: 1.0f, tolerance: 1e-12f).ToList();
         }
         
-        static readonly List<String> _debugAssertReasons = new List<String>();
+        static readonly List<string> _debugAssertReasons = new List<string>();
 
         readonly List<Curve2DSample> _precomputedSamples;
 

com.unity.uiwidgets/Runtime/animation/tween.cs

         readonly Animatable<T> _evaluatable;
 
         public override T value {
-            get { return _evaluatable.evaluate(parent); }
+            get {
+                return  _evaluatable.evaluate(parent);
+            }
         }
 
         public override string ToString() {
             return $"{_parent}\u27A9{_evaluatable}";
         }
     }
+    
+    /**
+     * We make Tween<T> a abstract class by design here (while it is not a abstract class in flutter
+     * The reason to do so is, in C# we cannot use arithmetic between generic types, therefore the
+     * lerp method cannot be implemented in Tween<T>
+     *
+     * To solve this problem, we make each Tween<T1>, Tween<T2> an explicit subclass T1Tween and T2Tween and
+     * implement the lerp method specifically
+     *
+     * See the implementations in "_OnOffAnimationColor" for some specific workarounds on this issue
+     * 
+     */
-    public class Tween<T> : Animatable<T>, IEquatable<Tween<T>> {
+    public abstract class Tween<T> : Animatable<T>, IEquatable<Tween<T>> {
         public Tween(T begin, T end) {
             this.begin = begin;
             this.end = end;
 
         public virtual T end { get; set; }
 
-        public virtual T lerp(float t) {
-            D.assert(begin != null);
-            D.assert(end != null);
-            return default; //begin + (end - begin) * t as T;
-        }
+        public abstract T lerp(float t);
 
         public override T transform(float t) {
             if (t == 0.0)

com.unity.uiwidgets/Runtime/async2/zone.cs

             return handler(implementation.zone, parentDelegate, this, duration, f);
         }
 
-        public override void print(String line) {
+        public override void print(string line) {
             var implementation = _print;
             ZoneDelegate parentDelegate = async_._parentDelegate(implementation.zone);
             PrintHandler handler = implementation.function;

com.unity.uiwidgets/Runtime/cupertino/button.cs

         public CupertinoButton(
             Key key = null,
             Widget child = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Color color = null,
             Color disabledColor = null,
             float minSize = 44.0f,
         public static CupertinoButton filled(
             Key key = null,
             Widget child = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Color disabledColor = null,
             float minSize = 44.0f,
             float pressedOpacity = 0.4f,
 
         public readonly Widget child;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly Color color;
 

com.unity.uiwidgets/Runtime/cupertino/context_menu.cs

 
         public override void initState() { 
             base.initState();
-            _mask = new _OnOffAnimation<Color>(
+            _mask = new _OnOffAnimationColor(
                 controller: widget.controller,
                 onValue: _lightModeMaskColor,
                 offValue: _masklessColor,
     }
   }
 
-  public class _OnOffAnimation<T> : CompoundAnimation<T> { 
-    public _OnOffAnimation(
+  
+  /**
+   * We cannot use _OnOffAnimation<T> here directly since Tween<T> is an abstract class in UIWidgets (while it is not in flutter)
+   * Refer to "Twee<T>" for the detailed reasons why we do so
+   *
+   * Instead, we should explicitly define classes for each generic type here
+   * 
+   */
+  public class _OnOffAnimationColor : CompoundAnimation<Color> { 
+    public _OnOffAnimationColor(
-      T onValue = default,
-      T offValue = default,
+      Color onValue = default,
+      Color offValue = default,
-        first: new Tween<T>(begin: offValue, end: onValue).animate(
+        first: new ColorTween(begin: offValue, end: onValue).animate(
-        next: new Tween<T>(begin: onValue, end: offValue).animate(
+        next: new ColorTween(begin: onValue, end: offValue).animate(
             new CurvedAnimation(
                 parent: controller,
                 curve: new Interval(intervalOff == null ? 0.0f : (float)intervalOff, intervalOff == null ? 0.0f : (float)intervalOff)
       D.assert(intervalOff !=null && intervalOff >= 0.0 && intervalOff <= 1.0);
       D.assert(intervalOn <= intervalOff);
     }
-    public readonly T _offValue;
-    public override T value {
+    public readonly Color _offValue;
+    public override Color value {
       get {
         return next.value.Equals( _offValue) ? next.value : first.value; 
       }

com.unity.uiwidgets/Runtime/cupertino/date_picker.cs

             numberLabelHeight = textPainter.height;
             numberLabelBaseline = textPainter.computeDistanceToActualBaseline(TextBaseline.alphabetic);
         }
-        Widget _buildLabel(String text, EdgeInsetsDirectional pickerPadding) {
+        Widget _buildLabel(string text, EdgeInsetsDirectional pickerPadding) {
             EdgeInsetsDirectional padding = EdgeInsetsDirectional.only(
                 start: numberLabelWidth
                        + CupertinoDatePickerUtils._kTimerPickerLabelPadSize

com.unity.uiwidgets/Runtime/cupertino/sliding_segmented_control.cs

         public readonly Dictionary<T, AnimationController> _highlightControllers = new Dictionary<T, AnimationController>();
         public readonly Tween<FontWeight> _highlightTween = new _FontWeightTween(begin: FontWeight.normal, end: FontWeight.w500);
         public readonly Dictionary<T, AnimationController> _pressControllers = new Dictionary<T, AnimationController>(); 
-        public readonly Tween<float> _pressTween = new Tween<float>(begin: 1, end: 0.2f);
+        public readonly Tween<float> _pressTween = new FloatTween(begin: 1, end: 0.2f);
 
         List<T> keys;
 
             float separatorOpacity = 0f) {
                 D.assert(separatorOpacity != null);
                 D.assert(opacity != null);
-                separatorTween = new Tween<float>(begin: separatorOpacity, end: separatorOpacity);
-                opacityTween = new Tween<float>(begin: opacity, end: opacity);
+                separatorTween = new FloatTween(begin: separatorOpacity, end: separatorOpacity);
+                opacityTween = new FloatTween(begin: opacity, end: opacity);
             }
         float opacity; 
         Tween<float> opacityTween;
 
   Tween<Rect> _currentThumbTween;
 
-  Tween<float> _thumbScaleTween = new Tween<float>(begin:    CupertinoSlidingSegmentedControlsUtils._kMinThumbScale, end: 1);
+  Tween<float> _thumbScaleTween = new FloatTween(begin:    CupertinoSlidingSegmentedControlsUtils._kMinThumbScale, end: 1);
   float currentThumbScale = 1;
 
   
 
   void _playThumbScaleAnimation(bool isExpanding = false) {
     D.assert(isExpanding != null);
-    _thumbScaleTween = new Tween<float>(begin: currentThumbScale, end: isExpanding ? 1 : CupertinoSlidingSegmentedControlsUtils._kMinThumbScale);
+    _thumbScaleTween = new FloatTween(begin: currentThumbScale, end: isExpanding ? 1 : CupertinoSlidingSegmentedControlsUtils._kMinThumbScale);
     state.thumbScaleController.animateWith(CupertinoSlidingSegmentedControlsUtils._kThumbSpringAnimationSimulation);
   }
 
           RenderBox child = children[i];
           _ChildAnimationManifest manifest = _childAnimations[child];
           D.assert(manifest != null);
-          manifest.separatorTween = new Tween<float>(
+          manifest.separatorTween = new FloatTween(
             begin: manifest.separatorOpacity,
             end: shouldFadeOut ? 0 : 1
           );

com.unity.uiwidgets/Runtime/cupertino/text_field.cs

 using Unity.UIWidgets.service;
 using Unity.UIWidgets.ui;
 using Unity.UIWidgets.widgets;
+using UnityEngine;
+using Color = Unity.UIWidgets.ui.Color;
 
 namespace Unity.UIWidgets.cupertino {
     class CupertinoTextFieldUtils {
 
         public readonly BoxDecoration decoration;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly string placeholder;
 
 
         public GlobalKey<EditableTextState> editableTextKey {
             get {
-                return GlobalKey<EditableTextState>.key();
+                return _editableTextKey;
+        public readonly GlobalKey<EditableTextState>  _editableTextKey =  GlobalKey<EditableTextState>.key();
+
-        //public readonly GlobalKey<EditableTextState>  editableTextKey =  GlobalKey<EditableTextState>.key();
 
         public bool selectionEnabled {
             get { return widget.selectionEnabled;}

com.unity.uiwidgets/Runtime/engine2/UIWidgetsPanel.cs

 using System.Runtime.InteropServices;
 using AOT;
 using Unity.UIWidgets.foundation;
+using Unity.UIWidgets.gestures;
 using Unity.UIWidgets.services;
 using Unity.UIWidgets.ui;
 using UnityEngine;
 #if UNITY_EDITOR_WIN || UNITY_STANDALONE_WIN
     public partial class UIWidgetsPanel {
         RenderTexture _renderTexture;
-    
+
         void _createRenderTexture(int width, int height, float devicePixelRatio) {
             D.assert(_renderTexture == null);
 
 
             texture = _renderTexture;
         }
-    
+
         void _destroyRenderTexture() {
             D.assert(_renderTexture != null);
             texture = null;
-    
-        void _enableUIWidgetsPanel(string font_settings)
-        {
+
+        void _enableUIWidgetsPanel(string font_settings) {
-    
-        void _resizeUIWidgetsPanel()
-        {
+
+        void _resizeUIWidgetsPanel() {
-                        _renderTexture.GetNativeTexturePtr(),
-                        _width, _height, _devicePixelRatio);
+                _renderTexture.GetNativeTexturePtr(),
+                _width, _height, _devicePixelRatio);
-    
+
-    
-        
+
+
-            IntPtr nativeTexturePtr, int width, int height, float dpi, string streamingAssetsPath, string font_settings);
-        
+            IntPtr nativeTexturePtr, int width, int height, float dpi, string streamingAssetsPath,
+            string font_settings);
+
         [DllImport(NativeBindings.dllName)]
         static extern void UIWidgetsPanel_onRenderTexture(
             IntPtr ptr, IntPtr nativeTexturePtr, int width, int height, float dpi);
             IntPtr ptr, int width, int height, float dpi);
     }
 #endif
-    
+
     public partial class UIWidgetsPanel : RawImage {
         [Serializable]
         public struct Font {
-        
+
         [Serializable]
         public struct TextFont {
             public string family;
             if (textFont == null || textFont.Length == 0) {
                 return null;
             }
+
             var result = new object[textFont.Length];
             for (int i = 0; i < textFont.Length; i++) {
                 var font = new Dictionary<string, object>();
                     if (textFont[i].fonts[j].asset.Length > 0) {
                         dic[j].Add("asset", textFont[i].fonts[j].asset);
                     }
+
+
+
-        public float devicePixelRatioOverride;
+        public float devicePixelRatioOverride = 1;
+
 
         public float hardwareAntiAliasing;
         // RectTransform rectTransform {
 
         IntPtr _ptr;
         GCHandle _handle;
-        
+
         int _width;
         int _height;
         float _devicePixelRatio;
             if (fonts != null && fonts.Length > 0) {
                 settings.Add("fonts", fontsToObject(fonts));
             }
-            
+
             _enableUIWidgetsPanel(JSONMessageCodec.instance.toJson(settings));
 
             Input_OnEnable();
             _handle = default;
 
             _disableUIWidgetsPanel();
-            
+
             D.assert(!isolate.isValid);
             base.OnDisable();
         }
             Event e = Event.current;
             if (e.isKey) {
                 UIWidgetsPanel_onKey(_ptr, e.keyCode, e.type == EventType.KeyDown);
-                if (e.character != 0) {
-                    UIWidgetsPanel_onChar(_ptr, e.character);
+                if (e.character != 0 || e.keyCode == KeyCode.Backspace) {
+                    PointerEventConverter.KeyEvent.Enqueue(new Event(e));
+                    // TODO: add on char
+                    // UIWidgetsPanel_onChar(_ptr, e.character);
                 }
             }
         }
             _isEntered = false;
             UIWidgetsPanel_onMouseLeave(_ptr);
         }
-        
+
         public void OnDrag(PointerEventData eventData) {
             var pos = _getPointerPosition(Input.mousePosition);
             if (pos == null) {

com.unity.uiwidgets/Runtime/foundation/assertions.cs

     
     internal abstract class _ErrorDiagnostic : DiagnosticsProperty<List<object>> {
         internal _ErrorDiagnostic(
-            String message,
+            string message,
             DiagnosticsTreeStyle style = DiagnosticsTreeStyle.flat,
             DiagnosticLevel level = DiagnosticLevel.info
         ) : base(

com.unity.uiwidgets/Runtime/gestures/converter.cs

+using System;
+using Unity.UIWidgets.service;
 using UnityEngine;
 
 namespace Unity.UIWidgets.gestures {
                 var radiusMax = _toLogicalPixels(datum.radiusMax, devicePixelRatio);
                 var timeStamp = datum.timeStamp;
                 var kind = datum.kind;
+                // TODO: datum.signalKind is not nullable, "else" could not be reached
                 if (datum.signalKind == null || datum.signalKind == ui.PointerSignalKind.none) {
                     switch (datum.change) {
                         case PointerChange.add: {
                                 radiusMax: radiusMax
                             );
                             break;
+                        default:
+                        //TODO: PUT KEYBOARD TO A PROPRER POSITION
+                            if (datum.kind == PointerDeviceKind.keyboard) {
+                                var keyBoardEvent = new Event();
+                                if (datum.change == PointerChange.kMouseDown) {
+                                    keyBoardEvent.type = EventType.KeyDown;
+                                }else if (datum.change == PointerChange.kMouseUp) {
+                                    keyBoardEvent.type = EventType.KeyUp;
+                                }
+
+                                keyBoardEvent.keyCode = (KeyCode)datum.buttons;
+
+                                RawKeyboard.instance._handleKeyEvent(keyBoardEvent);
+                                TextInput.OnGUI();
+                            }
+                            break;
                     }
                 }
                 else {
             }
         }
 
+        public static Queue<Event> KeyEvent = new Queue<Event>();
         static float _toLogicalPixels(float physicalPixels, float devicePixelRatio) {
             return physicalPixels / devicePixelRatio;
         }

com.unity.uiwidgets/Runtime/material/banner.cs

 using TextStyle = Unity.UIWidgets.painting.TextStyle;
 
 namespace Unity.UIWidgets.material {
-    class MaterialBanner : StatelessWidget {
+    public class MaterialBanner : StatelessWidget {
         public MaterialBanner(
             Key key = null,
             Widget content = null,
             var rowList = new List<Widget>();
             if (leading != null) {
                 rowList.Add(new Padding(
-                    padding: (EdgeInsets) leadingPadding,
+                    padding: leadingPadding,
                     child: leading
                 ));
             }
 
             var columnList = new List<Widget>();
             columnList.Add(new Padding(
-                padding: (EdgeInsets) padding,
+                padding: padding,
                 child: new Row(
                     children: rowList
                 )

com.unity.uiwidgets/Runtime/material/bottom_sheet.cs

         public static Future<T> showModalBottomSheet<T>(
             BuildContext context,
             WidgetBuilder builder,
-            Color backgroundColor,
+            Color backgroundColor = null,
             float? elevation = null,
             ShapeBorder shape = null,
             Clip? clipBehavior = null,
     class _ModalBottomSheetState<T> : State<_ModalBottomSheet<T>> {
         ParametricCurve<float> animationCurve = material_._modalBottomSheetCurve;
 
-        String _getRouteLabel(MaterialLocalizations localizations) {
+        string _getRouteLabel(MaterialLocalizations localizations) {
             switch (Theme.of(context).platform) {
                 case RuntimePlatform.IPhonePlayer:
                 case RuntimePlatform.OSXEditor:
             D.assert(material_.debugCheckHasMaterialLocalizations(context));
             MediaQueryData mediaQuery = MediaQuery.of(context);
             MaterialLocalizations localizations = MaterialLocalizations.of(context);
-            String routeLabel = _getRouteLabel(localizations);
+            string routeLabel = _getRouteLabel(localizations);
 
             return new AnimatedBuilder(
                 animation: widget.route.animation,

com.unity.uiwidgets/Runtime/material/button.cs

             float hoverElevation = 4.0f,
             float highlightElevation = 8.0f,
             float disabledElevation = 0.0f,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             BoxConstraints constraints = null,
             ShapeBorder shape = null,
 
         public readonly float disabledElevation;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly VisualDensity visualDensity;
 
             ShapeBorder effectiveShape = MaterialStateProperty<Color>.resolveAs<ShapeBorder>(widget.shape, _states);
             Offset densityAdjustment = widget.visualDensity.baseSizeAdjustment;
             BoxConstraints effectiveConstraints = widget.visualDensity.effectiveConstraints(widget.constraints);
-            EdgeInsets padding = widget.padding.add(
+            EdgeInsetsGeometry padding = widget.padding.add(
                 EdgeInsets.only(
                     left: densityAdjustment.dx,
                     top: densityAdjustment.dy,
-            ).clamp(EdgeInsets.zero, EdgeInsets.infinity) as EdgeInsets;
+            ).clamp(EdgeInsets.zero, EdgeInsetsGeometry.infinity) as EdgeInsets;
 
             Widget result = new ConstrainedBox(
                 constraints: effectiveConstraints,

com.unity.uiwidgets/Runtime/material/button_theme.cs

             ButtonBarLayoutBehavior layoutBehavior = ButtonBarLayoutBehavior.padded,
             float minWidth = 88.0f,
             float height = 36.0f,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             ShapeBorder shape = null,
             bool alignedDropdown = false,
             Color buttonColor = null,
             ButtonTextTheme textTheme = ButtonTextTheme.accent,
             float minWidth = 64.0f,
             float height = 36.0f,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             ShapeBorder shape = null,
             bool alignedDropdown = false,
             Color buttonColor = null,
             ButtonTextTheme textTheme = ButtonTextTheme.normal,
             float minWidth = 88.0f,
             float height = 36.0f,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             ShapeBorder shape = null,
             ButtonBarLayoutBehavior layoutBehavior = ButtonBarLayoutBehavior.padded,
             bool alignedDropdown = false,
             }
         }
 
-        public EdgeInsets padding {
+        public EdgeInsetsGeometry padding {
             get {
                 if (_padding != null) {
                     return _padding;
             }
         }
 
-        readonly EdgeInsets _padding;
+        readonly EdgeInsetsGeometry _padding;
 
         public ShapeBorder shape {
             get {
         }
 
 
-        public EdgeInsets getPadding(MaterialButton button) {
+        public EdgeInsetsGeometry getPadding(MaterialButton button) {
             if (button.padding != null) {
                 return button.padding;
             }
                 layoutBehavior: layoutBehavior ?? this.layoutBehavior,
                 minWidth: minWidth ?? this.minWidth,
                 height: height ?? this.height,
-                padding: (EdgeInsets) padding ?? this.padding,
+                padding: padding ?? this.padding,
                 shape: shape ?? this.shape,
                 alignedDropdown: alignedDropdown ?? this.alignedDropdown,
                 buttonColor: buttonColor ?? _buttonColor,
                 defaultValue: defaultTheme.textTheme));
             properties.add(new FloatProperty("minWidth", minWidth, defaultValue: defaultTheme.minWidth));
             properties.add(new FloatProperty("height", height, defaultValue: defaultTheme.height));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("padding", padding,
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("padding", padding,
                 defaultValue: defaultTheme.padding));
             properties.add(new DiagnosticsProperty<ShapeBorder>("shape", shape, defaultValue: defaultTheme.shape));
             properties.add(new FlagProperty("alignedDropdown",

com.unity.uiwidgets/Runtime/material/card.cs

             float? elevation = null,
             ShapeBorder shape = null,
             bool borderOnForeground = true,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry margin = null,
             Clip? clipBehavior = null,
             Widget child = null) : base(key: key) {
             D.assert(elevation == null || elevation >= 0.0f);
 
         public readonly Clip? clipBehavior;
 
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
 
         public readonly Widget child;
         

com.unity.uiwidgets/Runtime/material/card_theme.cs

             Color color = null,
             Color shadowColor = null,
             float? elevation = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry margin = null,
             ShapeBorder shape = null
         ) {
             D.assert(elevation == null || elevation >= 0.0f);
 
         public readonly float? elevation;
 
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
 
         public readonly ShapeBorder shape;
 
             Color shadowColor = null,
             float? elevation = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry margin = null,
             ShapeBorder shape = null
         ) {
             return new CardTheme(
                 color: Color.lerp(a?.color, b?.color, t),
                 shadowColor: Color.lerp(a?.shadowColor, b?.shadowColor, t),
                 elevation: Mathf.Lerp(a?.elevation ?? 0.0f, b?.elevation ?? 0.0f, t),
-                margin: EdgeInsets.lerp(a?.margin, b?.margin, t),
+                margin: EdgeInsetsGeometry.lerp(a?.margin, b?.margin, t),
                 shape: ShapeBorder.lerp(a?.shape, b?.shape, t)
             );
         }
             properties.add(new ColorProperty("color", color, defaultValue: null));
             properties.add(new ColorProperty("shadowColor", shadowColor, defaultValue: null));
             properties.add(new DiagnosticsProperty<float?>("elevation", elevation, defaultValue: null));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("margin", margin, defaultValue: null));
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("margin", margin, defaultValue: null));
             properties.add(new DiagnosticsProperty<ShapeBorder>("shape", shape, defaultValue: null));
         }
     }

com.unity.uiwidgets/Runtime/material/chip.cs

 
         Color backgroundColor { get; }
 
-        EdgeInsets padding { get; }
+        EdgeInsetsGeometry padding { get; }
-        EdgeInsets labelPadding { get; }
+        EdgeInsetsGeometry labelPadding { get; }
 
         MaterialTapTargetSize? materialTapTargetSize { get; }
 
             Widget avatar = null,
             Widget label = null,
             TextStyle labelStyle = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             Widget deleteIcon = null,
             VoidCallback onDeleted = null,
             Color deleteIconColor = null,
             FocusNode focusNode = null,
             bool autofocus = false,
             Color backgroundColor = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             MaterialTapTargetSize? materialTapTargetSize = null,
             float? elevation = null,
 
         TextStyle _labelStyle;
 
-        public EdgeInsets labelPadding {
+        public EdgeInsetsGeometry labelPadding {
-        EdgeInsets _labelPadding;
+        EdgeInsetsGeometry _labelPadding;
 
         public ShapeBorder shape {
             get { return _shape; }
 
         Color _backgroundColor;
 
-        public EdgeInsets padding {
+        public EdgeInsetsGeometry padding {
-        EdgeInsets _padding;
+        EdgeInsetsGeometry _padding;
 
         public Widget deleteIcon {
             get { return _deleteIcon; }
             Widget avatar = null,
             Widget label = null,
             TextStyle labelStyle = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             bool selected = false,
             bool isEnabled = true,
             ValueChanged<bool> onSelected = null,
             FocusNode focusNode = null,
             bool autofocus = false,
             Color backgroundColor = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             MaterialTapTargetSize? materialTapTargetSize = null,
             float? elevation = null,
 
         TextStyle _labelStyle;
 
-        public EdgeInsets labelPadding {
+        public EdgeInsetsGeometry labelPadding {
-        EdgeInsets _labelPadding;
+        EdgeInsetsGeometry _labelPadding;
 
         public bool? selected {
             get { return _selected; }
 
         Color _backgroundColor;
 
-        public EdgeInsets padding {
+        public EdgeInsetsGeometry padding {
-        EdgeInsets _padding;
+        EdgeInsetsGeometry _padding;
 
         public VisualDensity visualDensity { get; }
 
             Widget avatar = null,
             Widget label = null,
             TextStyle labelStyle = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             ValueChanged<bool> onSelected = null,
             float? pressElevation = null,
             bool? selected = null,
             FocusNode focusNode = null,
             bool autofocus = false,
             Color backgroundColor = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             MaterialTapTargetSize? materialTapTargetSize = null,
             float? elevation = null,
 
         TextStyle _labelStyle;
 
-        public EdgeInsets labelPadding {
+        public EdgeInsetsGeometry labelPadding {
-        EdgeInsets _labelPadding;
+        EdgeInsetsGeometry _labelPadding;
 
         public ValueChanged<bool> onSelected {
             get { return _onSelected; }
 
         Color _backgroundColor;
 
-        public EdgeInsets padding {
+        public EdgeInsetsGeometry padding {
-        EdgeInsets _padding;
+        EdgeInsetsGeometry _padding;
 
         public VisualDensity visualDensity { get; }
 
             Widget avatar = null,
             Widget label = null,
             TextStyle labelStyle = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             bool selected = false,
             ValueChanged<bool> onSelected = null,
             float? pressElevation = null,
             FocusNode focusNode = null,
             bool autofocus = false,
             Color backgroundColor = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             MaterialTapTargetSize? materialTapTargetSize = null,
             float? elevation = null,
 
         TextStyle _labelStyle;
 
-        public EdgeInsets labelPadding {
+        public EdgeInsetsGeometry labelPadding {
-        EdgeInsets _labelPadding;
+        EdgeInsetsGeometry _labelPadding;
 
         public bool? selected {
             get { return _selected; }
 
         Color _backgroundColor;
 
-        public EdgeInsets padding {
+        public EdgeInsetsGeometry padding {
-        EdgeInsets _padding;
+        EdgeInsetsGeometry _padding;
 
         public VisualDensity visualDensity { get; }
 
             Widget avatar = null,
             Widget label = null,
             TextStyle labelStyle = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             VoidCallback onPressed = null,
             float? pressElevation = null,
             string tooltip = null,
             bool autofocus = false,
             Color backgroundColor = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             MaterialTapTargetSize? materialTapTargetSize = null,
             float? elevation = null,
 
         TextStyle _labelStyle;
 
-        public EdgeInsets labelPadding {
+        public EdgeInsetsGeometry labelPadding {
-        EdgeInsets _labelPadding;
+        EdgeInsetsGeometry _labelPadding;
 
         public VoidCallback onPressed {
             get { return _onPressed; }
 
         Color _backgroundColor;
 
-        public EdgeInsets padding {
+        public EdgeInsetsGeometry padding {
-        EdgeInsets _padding;
+        EdgeInsetsGeometry _padding;
 
         public VisualDensity visualDensity { get; }
 
             Widget avatar = null,
             Widget label = null,
             TextStyle labelStyle = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             Widget deleteIcon = null,
             VoidCallback onDeleted = null,
             Color deleteIconColor = null,
 
         TextStyle _labelStyle;
 
-        public EdgeInsets labelPadding {
+        public EdgeInsetsGeometry labelPadding {
-        EdgeInsets _labelPadding;
+        EdgeInsetsGeometry _labelPadding;
 
         public Widget deleteIcon {
             get { return _deleteIcon; }
 
         Color _backgroundColor;
 
-        public EdgeInsets padding {
+        public EdgeInsetsGeometry padding {
-        EdgeInsets _padding;
+        EdgeInsetsGeometry _padding;
 
         public VisualDensity visualDensity { get; }
 

com.unity.uiwidgets/Runtime/material/chip_theme.cs

             Color selectedShadowColor = null,
             bool? showCheckmark = null,
             Color checkmarkColor = null,
-            EdgeInsets labelPadding = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry labelPadding = null,
+            EdgeInsetsGeometry padding = null,
             ShapeBorder shape = null,
             TextStyle labelStyle = null,
             TextStyle secondaryLabelStyle = null,
             const int selectAlpha = 0x3d; // 12% + 12% = 24%
             const int textLabelAlpha = 0xde; // 87%
             ShapeBorder shape = new StadiumBorder();
-            EdgeInsets labelPadding = EdgeInsets.symmetric(horizontal: 8.0f);
-            EdgeInsets padding = EdgeInsets.all(4.0f);
+            EdgeInsetsGeometry labelPadding = EdgeInsets.symmetric(horizontal: 8.0f);
+            EdgeInsetsGeometry padding = EdgeInsets.all(4.0f);
 
             primaryColor = primaryColor ?? (brightness == Brightness.light ? Colors.black : Colors.white);
             Color backgroundColor = primaryColor.withAlpha(backgroundAlpha);
 
         public readonly Color checkmarkColor;
 
-        public readonly EdgeInsets labelPadding;
+        public readonly EdgeInsetsGeometry labelPadding;
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly ShapeBorder shape;
 
             Color shadowColor = null,
             Color selectedShadowColor = null,
             Color checkmarkColor = null,
-            EdgeInsets labelPadding = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry labelPadding = null,
+            EdgeInsetsGeometry padding = null,
             ShapeBorder shape = null,
             TextStyle labelStyle = null,
             TextStyle secondaryLabelStyle = null,
                 shadowColor: Color.lerp(a?.shadowColor, b?.shadowColor, t),
                 selectedShadowColor: Color.lerp(a?.selectedShadowColor, b?.selectedShadowColor, t),
                 checkmarkColor: Color.lerp(a?.checkmarkColor, b?.checkmarkColor, t),
-                labelPadding: EdgeInsets.lerp(a?.labelPadding, b?.labelPadding, t),
-                padding: EdgeInsets.lerp(a?.padding, b?.padding, t),
+                labelPadding: EdgeInsetsGeometry.lerp(a?.labelPadding, b?.labelPadding, t),
+                padding: EdgeInsetsGeometry.lerp(a?.padding, b?.padding, t),
                 shape: ShapeBorder.lerp(a?.shape, b?.shape, t),
                 labelStyle: TextStyle.lerp(a?.labelStyle, b?.labelStyle, t),
                 secondaryLabelStyle: TextStyle.lerp(a?.secondaryLabelStyle, b?.secondaryLabelStyle, t),
                 defaultValue: defaultData.selectedShadowColor));
             properties.add(new ColorProperty("checkMarkColor", checkmarkColor,
                 defaultValue: defaultData.checkmarkColor));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("labelPadding", labelPadding,
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("labelPadding", labelPadding,
-                new DiagnosticsProperty<EdgeInsets>("padding", padding, defaultValue: defaultData.padding));
+                new DiagnosticsProperty<EdgeInsetsGeometry>("padding", padding, defaultValue: defaultData.padding));
             properties.add(new DiagnosticsProperty<ShapeBorder>("shape", shape, defaultValue: defaultData.shape));
             properties.add(new DiagnosticsProperty<TextStyle>("labelStyle", labelStyle,
                 defaultValue: defaultData.labelStyle));

com.unity.uiwidgets/Runtime/material/data_table.cs

             ValueChanged<bool?> onCheckboxChanged = null
         ) {
             Widget contents = new Padding(
-                //TODO: update EdgeInsets
-                padding: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(start: horizontalMargin,
+                padding: EdgeInsetsDirectional.only(start: horizontalMargin,
                     end: horizontalMargin / 2.0f),
                 child: new Center(
                     child: new Checkbox(
                 children: rowChild
             );
             label = new Container(
-                // TODO: udpate to EdgetInsets
-                padding: (EdgeInsets) padding,
+                padding: padding,
                 height: headingRowHeight,
                 alignment: numeric ?? false
                     ? Alignment.centerRight
             }
 
             label = new Container(
-                padding: (EdgeInsets) padding,
+                padding: padding,
                 height: dataRowHeight,
                 alignment: numeric ? Alignment.centerRight : (AlignmentGeometry) AlignmentDirectional.centerStart,
                 child: new DefaultTextStyle(
         bool _down;
 
         static readonly Animatable<float> _turnTween =
-            new Tween<float>(begin: 0.0f, end: Mathf.PI).chain(new CurveTween(curve: Curves.easeIn));
+            new FloatTween(begin: 0.0f, end: Mathf.PI).chain(new CurveTween(curve: Curves.easeIn));
 
         public override void initState() {
             base.initState();

com.unity.uiwidgets/Runtime/material/dialog.cs

         public AlertDialog(
             Key key = null,
             Widget title = null,
-            EdgeInsets titlePadding = null,
+            EdgeInsetsGeometry titlePadding = null,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             TextStyle contentTextStyle = null,
             List<Widget> actions = null,
             EdgeInsetsGeometry actionsPadding = null,
         }
 
         public readonly Widget title;
-        public readonly EdgeInsets titlePadding;
+        public readonly EdgeInsetsGeometry titlePadding;
-        public readonly EdgeInsets contentPadding;
+        public readonly EdgeInsetsGeometry contentPadding;
         public readonly TextStyle contentTextStyle;
         public readonly List<Widget> actions;
         public readonly EdgeInsetsGeometry actionsPadding;
 
             if (actions != null) {
                 actionsWidget = new Padding(
-                    padding: (EdgeInsets)actionsPadding,
+                    padding: actionsPadding,
                     child: new ButtonBar(
                         buttonPadding: buttonPadding,
                         overflowDirection: actionsOverflowDirection,

com.unity.uiwidgets/Runtime/material/divider.cs

                 child: new Center(
                     child: new Container(
                         width: thickness,
-                        //TODO: update to EdgeInsetsGeometry
-                        margin: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(top: indent,
+                        margin: EdgeInsetsDirectional.only(top: indent,
                             bottom: endIndent),
                         decoration: new BoxDecoration(
                             border: new Border(

com.unity.uiwidgets/Runtime/material/drawer_header.cs

         public DrawerHeader(
             Key key = null,
             Decoration decoration = null,
-            EdgeInsets margin = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry margin = null,
+            EdgeInsetsGeometry padding = null,
             TimeSpan? duration = null,
             Curve curve = null,
             Widget child = null
 
         public readonly Decoration decoration;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
 
         public readonly TimeSpan duration;
 

com.unity.uiwidgets/Runtime/material/dropdown.cs

         public const float _kMenuItemHeight = kMinInteractiveDimension;
         public const float _kDenseButtonHeight = 24.0f;
         public static readonly EdgeInsets _kMenuItemPadding = EdgeInsets.symmetric(horizontal: 16.0f);
-        public static readonly EdgeInsets _kAlignedButtonPadding = EdgeInsets.only(left: 16.0f, right: 4.0f);
+        public static readonly EdgeInsetsGeometry _kAlignedButtonPadding = EdgeInsets.only(left: 16.0f, right: 4.0f);
-        public static readonly EdgeInsets _kUnalignedMenuMargin = EdgeInsets.only(left: 16.0f, right: 24.0f);
+        public static readonly EdgeInsetsGeometry _kUnalignedMenuMargin = EdgeInsets.only(left: 16.0f, right: 24.0f);
 
         public delegate List<Widget> DropdownButtonBuilder(BuildContext context);
     }
     class _DropdownRoute<T> : PopupRoute<_DropdownRouteResult<T>>  {
         public _DropdownRoute(
             List<_MenuItem<T>> items = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Rect buttonRect = null,
             int? selectedIndex = null,
             int elevation = 8,
         }
 
         public readonly List<_MenuItem<T>> items;
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
         public readonly Rect buttonRect;
         public readonly int? selectedIndex;
         public readonly int elevation;
             _DropdownRoute<T> route = null,
             BoxConstraints constraints = null,
             List<_MenuItem<T>> items = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Rect buttonRect = null,
             int? selectedIndex = null,
             int elevation = 0,
         public readonly _DropdownRoute<T> route;
         public readonly BoxConstraints constraints;
         public readonly List<_MenuItem<T>> items;
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
         public readonly Rect buttonRect;
         public readonly int? selectedIndex;
         public readonly int elevation;
         void _handleTap() {
             RenderBox itemBox = (RenderBox) context.findRenderObject();
             Rect itemRect = itemBox.localToGlobal(Offset.zero) & itemBox.size;
-            EdgeInsets menuMargin = ButtonTheme.of(context).alignedDropdown
+            TextDirection textDirection = Directionality.of(context);
+            EdgeInsetsGeometry menuMargin = ButtonTheme.of(context).alignedDropdown
                 ? material_._kAlignedMenuMargin
                 : material_._kUnalignedMenuMargin;
 
             D.assert(_dropdownRoute == null);
             _dropdownRoute = new _DropdownRoute<T>(
                 items: menuItems,
-                buttonRect: menuMargin.inflateRect(itemRect),
-                padding: material_._kMenuItemPadding,
+                buttonRect: menuMargin.resolve(textDirection).inflateRect(itemRect),
+                padding: material_._kMenuItemPadding.resolve(textDirection),
                 selectedIndex: _selectedIndex ?? 0,
                 elevation: widget.elevation,
                 theme: Theme.of(context, shadowThemeOnly: true),
                 ));
             }
 
-            EdgeInsets padding = ButtonTheme.of(context).alignedDropdown
+            EdgeInsetsGeometry padding = ButtonTheme.of(context).alignedDropdown
                 ? material_._kAlignedButtonPadding
                 : material_._kUnalignedButtonPadding;
 

com.unity.uiwidgets/Runtime/material/expand_icon.cs

             bool isExpanded = false,
             float size = 24.0f,
             ValueChanged<bool> onPressed = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Color color = null,
             Color disabledColor = null,
             Color expandedColor = null
 
         public readonly ValueChanged<bool> onPressed;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly Color color;
 

com.unity.uiwidgets/Runtime/material/expansion_panel.cs

 
 
                 Widget expandIconContainer = new Container(
-                    //TODO: update to EdgeInsetsGeometry
-                    //margin: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(end: 8.0f),
+                    margin: EdgeInsetsDirectional.only(end: 8.0f),
                     child: new ExpandIcon(
                         isExpanded: _isChildExpanded(expandIndex),
                         padding: EdgeInsets.all(16.0f),

com.unity.uiwidgets/Runtime/material/flat_button.cs

             Color highlightColor = null,
             Color splashColor = null,
             Brightness? colorBrightness = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             ShapeBorder shape = null,
             Clip clipBehavior = Clip.none,
             Color highlightColor = null,
             Color splashColor = null,
             Brightness? colorBrightness = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             ShapeBorder shape = null,
             Clip clipBehavior = Clip.none,
             FocusNode focusNode = null,
             Color highlightColor = null,
             Color splashColor = null,
             Brightness? colorBrightness = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             ShapeBorder shape = null,
             Clip clipBehavior = Clip.none,
             FocusNode focusNode = null,

com.unity.uiwidgets/Runtime/material/flexible_space_bar.cs

 
         public readonly List<StretchMode> stretchModes;
 
-        public readonly EdgeInsets titlePadding;
+        public readonly EdgeInsetsGeometry titlePadding;
 
         public static Widget createSettings(
             float? toolbarOpacity = null,
                             color: titleStyle.color.withOpacity(toolbarOpacity));
 
                         bool effectiveCenterTitle = _getEffectiveCenterTitle(theme).Value;
-                        EdgeInsets padding = widget.titlePadding ??
+                        EdgeInsetsGeometry padding = widget.titlePadding ??
                                              EdgeInsets.only(
                                                  left: effectiveCenterTitle ? 0.0f : 72.0f,
                                                  bottom: 16.0f

com.unity.uiwidgets/Runtime/material/grid_tile_bar.cs

             var expandChildren = new List<widgets.Widget>();
 
             if (leading != null) {
-                //TODO: EdgeInsetsGeometry
-                    padding: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(end: 8.0f), child:
-                    leading));
+                    padding: EdgeInsetsDirectional.only(end: 8.0f), child: leading));
             }
 
             if (title != null && subtitle != null) {
                 ));
 
             if (trailing != null) {
-                //TODO: EdgeInsetsGeometry
-                    padding: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(start: 8.0f),
+                    padding: EdgeInsetsDirectional.only(start: 8.0f),
-                //TODO: EdgeInsetsGeometry
-                padding: (EdgeInsets) (EdgeInsetsGeometry) padding,
+                padding: padding,
                 decoration: decoration,
                 height: (title != null && subtitle != null) ? 68.0f : 48.0f,
                 child: new Theme(

com.unity.uiwidgets/Runtime/material/icon_button.cs

             Key key = null,
             float iconSize = 24.0f,
             VisualDensity visualDensity = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Alignment alignment = null,
             Widget icon = null,
             Color color = null,
 
         public readonly VisualDensity visualDensity;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly Alignment alignment;
 

com.unity.uiwidgets/Runtime/material/ink_decoration.cs

     public class Ink : StatefulWidget {
         public Ink(
             Key key = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Color color = null,
             Decoration decoration = null,
             float? width = null,
 
         public static Ink image(
             Key key = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             ImageProvider image = null,
             ImageErrorListener onImageError = null,
             ColorFilter colorFilter = null,
 
         public readonly Widget child;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly Decoration decoration;
 
 
-        public EdgeInsets _paddingIncludingDecoration {
+        public EdgeInsetsGeometry _paddingIncludingDecoration {
-                EdgeInsets decorationPadding = (EdgeInsets) decoration.padding;
+                EdgeInsetsGeometry decorationPadding = decoration.padding;
                 if (padding == null) {
                     return decorationPadding;
                 }
 
         public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
             base.debugFillProperties(properties);
-            properties.add(new DiagnosticsProperty<EdgeInsets>("padding", padding, defaultValue: null));
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("padding", padding, defaultValue: null));
             properties.add(new DiagnosticsProperty<Decoration>("bg", decoration, defaultValue: null));
         }
 
             }
 
             Widget current = widget.child;
-            EdgeInsets effectivePadding = widget._paddingIncludingDecoration;
+            EdgeInsetsGeometry effectivePadding = widget._paddingIncludingDecoration;
             if (effectivePadding != null) {
                 current = new Padding(
                     padding: effectivePadding,

com.unity.uiwidgets/Runtime/material/input_decorator.cs

 
     class _Decoration : IEquatable<_Decoration> {
         public _Decoration(
-            EdgeInsets contentPadding,
+            EdgeInsetsGeometry contentPadding,
             bool isCollapsed,
             float floatingLabelHeight,
             float floatingLabelProgress,
             this.container = container;
         }
 
-        public readonly EdgeInsets contentPadding;
+        public readonly EdgeInsetsGeometry contentPadding;
         public readonly bool isCollapsed;
         public readonly float floatingLabelHeight;
         public readonly float floatingLabelProgress;
                 return _textAlignVertical;
             }
             set {
-                D.assert(value != null);
                 if (_textAlignVertical == value) {
                     return;
                 }
         }
 
         public EdgeInsets contentPadding {
-            get { return decoration.contentPadding; }
+            get { return (EdgeInsets) decoration.contentPadding; }
         }
 
         float _layoutLineBox(RenderBox box, BoxConstraints constraints) {
         ) : base(key: key) {
             D.assert(decoration != null);
             D.assert(textDirection != null);
-            D.assert(textAlignVertical != null);
             D.assert(textBaseline != null);
             D.assert(expands != null);
             this.decoration = decoration;
             }
 
             TextDirection textDirection = Directionality.of(context);
-            EdgeInsets decorationContentPadding = decoration.contentPadding;
+            EdgeInsets decorationContentPadding = decoration.contentPadding?.resolve(textDirection);
             EdgeInsets contentPadding;
             float? floatingLabelHeight;
             if (decoration.isCollapsed) {
             bool? hasFloatingPlaceholder = true,
             FloatingLabelBehavior? floatingLabelBehavior = FloatingLabelBehavior.auto,
             bool? isDense = null,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             Widget prefixIcon = null,
             BoxConstraints prefixIconConstraints = null,
             Widget prefix = null,
 
         public readonly bool? isDense;
 
-        public readonly EdgeInsets contentPadding;
+        public readonly EdgeInsetsGeometry contentPadding;
 
         public bool isCollapsed;
 
             bool? hasFloatingPlaceholder = null,
             FloatingLabelBehavior? floatingLabelBehavior = null,
             bool? isDense = null,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             Widget prefixIcon = null,
             Widget prefix = null,
             string prefixText = null,
             bool? hasFloatingPlaceholder = true,
             FloatingLabelBehavior? floatingLabelBehavior = FloatingLabelBehavior.auto,
             bool? isDense = false,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             bool? isCollapsed = false,
             TextStyle prefixStyle = null,
             TextStyle suffixStyle = null,
 
         public readonly bool? isDense;
 
-        public readonly EdgeInsets contentPadding;
+        public readonly EdgeInsetsGeometry contentPadding;
 
         public readonly bool? isCollapsed;
 
             bool? hasFloatingPlaceholder = null,
             FloatingLabelBehavior? floatingLabelBehavior = null,
             bool? isDense = null,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             bool? isCollapsed = null,
             TextStyle prefixStyle = null,
             TextStyle suffixStyle = null,
             properties.add(new DiagnosticsProperty<FloatingLabelBehavior?>("floatingLabelBehavior",
                 floatingLabelBehavior, defaultValue: defaultTheme.floatingLabelBehavior));
             properties.add(new DiagnosticsProperty<bool?>("isDense", isDense, defaultValue: defaultTheme.isDense));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("contentPadding", contentPadding,
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("contentPadding", contentPadding,
                 defaultValue: defaultTheme.contentPadding));
             properties.add(new DiagnosticsProperty<bool?>("isCollapsed", isCollapsed,
                 defaultValue: defaultTheme.isCollapsed));

com.unity.uiwidgets/Runtime/material/list_tile.cs

             Color selectedColor = null,
             Color iconColor = null,
             Color textColor = null,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             Widget child = null) : base(key: key, child: child) {
             this.dense = dense;
             this.style = style;
             Color selectedColor = null,
             Color iconColor = null,
             Color textColor = null,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             Widget child = null) {
             D.assert(child != null);
             return new Builder(
 
         public readonly Color textColor;
 
-        public readonly EdgeInsets contentPadding;
+        public readonly EdgeInsetsGeometry contentPadding;
 
         public static ListTileTheme of(BuildContext context) {
             ListTileTheme result = context.dependOnInheritedWidgetOfExactType<ListTileTheme>();
             Widget trailing = null,
             bool isThreeLine = false,
             bool? dense = null,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             bool enabled = true,
             GestureTapCallback onTap = null,
             GestureLongPressCallback onLongPress = null,
 
         public readonly bool? dense;
 
-        public readonly EdgeInsets contentPadding;
+        public readonly EdgeInsetsGeometry contentPadding;
 
         public readonly bool enabled;
 
             }
 
             EdgeInsets _defaultContentPadding = EdgeInsets.symmetric(horizontal: 16.0f);
+            TextDirection textDirection = Directionality.of(context);
-                contentPadding ?? tileTheme?.contentPadding ?? _defaultContentPadding;
+                contentPadding?.resolve(textDirection) ?? tileTheme?.contentPadding?.resolve(textDirection) ?? _defaultContentPadding;
 
             return new InkWell(
                 onTap: enabled ? onTap : null,

com.unity.uiwidgets/Runtime/material/material_button.cs

             float? hoverElevation = null,
             float? highlightElevation = null,
             float? disabledElevation = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             ShapeBorder shape = null,
             Clip? clipBehavior = Clip.none,
             get { return onPressed != null || onLongPress != null; }
         }
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly VisualDensity visualDensity;
 

com.unity.uiwidgets/Runtime/material/outline_button.cs

             BorderSide borderSide = null,
             Color disabledBorderColor = null,
             Color highlightedBorderColor = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             ShapeBorder shape = null,
             Clip clipBehavior = Clip.none,
             Color highlightedBorderColor = null,
             Color disabledBorderColor = null,
             BorderSide borderSide = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             ShapeBorder shape = null,
             Clip clipBehavior = Clip.none,
             Color highlightedBorderColor = null,
             Color disabledBorderColor = null,
             BorderSide borderSide = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             ShapeBorder shape = null,
             Clip clipBehavior = Clip.none,
             BorderSide borderSide = null,
             Color disabledBorderColor = null,
             Color highlightedBorderColor = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             ShapeBorder shape = null,
             Clip? clipBehavior = Clip.none,
         public readonly BorderSide borderSide;
         public readonly Color disabledBorderColor;
         public readonly Color highlightedBorderColor;
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
         public readonly VisualDensity visualDensity;
         public readonly ShapeBorder shape;
         public readonly Clip? clipBehavior;

com.unity.uiwidgets/Runtime/material/page_transitions_theme.cs

         }
 
         // The scrim obscures the old page by becoming increasingly opaque.
-        internal static readonly Tween<float> _scrimOpacityTween = new Tween<float>(
+        internal static readonly Tween<float> _scrimOpacityTween = new FloatTween(
             begin: 0.0f,
             end: 0.60f
         );
         public static readonly List<TweenSequenceItem<float>> fastOutExtraSlowInTweenSequenceItems =
             new List<TweenSequenceItem<float>> {
                 new TweenSequenceItem<float>(
-                    tween: new Tween<float>(begin: 0.0f, end: 0.4f)
+                    tween: new FloatTween(begin: 0.0f, end: 0.4f)
-                    tween: new Tween<float>(begin: 0.4f, end: 1.0f)
+                    tween: new FloatTween(begin: 0.4f, end: 1.0f)
                         .chain(new CurveTween(curve: new Cubic(0.208333f, 0.82f, 0.25f, 1.0f))),
                     weight: 1.0f - 0.166666f
                 )
                     .chain(new CurveTween(curve: new Interval(0.2075f, 0.4175f))));
 
             Animation<float> _forwardEndScreenScaleTransition = widget.animation.drive(
-                new Tween<float>(begin: 0.85f, end: 1.00f)
+                new FloatTween(begin: 0.85f, end: 1.00f)
-                new Tween<float>(begin: 1.00f, end: 1.05f)
+                new FloatTween(begin: 1.00f, end: 1.05f)
-                new Tween<float>(begin: 0.0f, end: 1.00f)
+                new FloatTween(begin: 0.0f, end: 1.00f)
-                new Tween<float>(begin: 1.00f, end: 1.10f)
+                new FloatTween(begin: 1.00f, end: 1.10f)
-                new Tween<float>(begin: 0.9f, end: 1.0f)
+                new FloatTween(begin: 0.9f, end: 1.0f)
-                new Tween<float>(begin: 0.0f, end: 1.00f)
+                new FloatTween(begin: 0.0f, end: 1.00f)
                     .chain(new CurveTween(curve: new Interval(1 - 0.2075f, 1 - 0.0825f))));
 
             return new AnimatedBuilder(

com.unity.uiwidgets/Runtime/material/paginated_data_table.cs

                 headerWidgets.AddRange(
                     widget.actions.Select((Widget action) => {
                         return new Padding(
-                            // TODO: up EdgeInsetsGeometry
-                            padding: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(
+                            padding: EdgeInsetsDirectional.only(
                                 start: 24.0f - 8.0f * 2.0f),
                             child: action
                         );
                                             height: 64.0f,
                                             color: _selectedRowCount > 0 ? themeData.secondaryHeaderColor : null,
                                             child: new Padding(
-                                                //TODO: update EdgeInsets
-                                                padding: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(
+                                                padding: EdgeInsetsDirectional.only(
                                                     start: startPadding, end: 14.0f),
                                                 child: new Row(
                                                     mainAxisAlignment: MainAxisAlignment.end,

com.unity.uiwidgets/Runtime/material/pickers/calendar_date_picker.cs

             }
 
             return new Container(
-                //TODO: update to EdgeInsetsGeometry
-                padding: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(start: 16, end: 4),
+                padding: EdgeInsetsDirectional.only(start: 16, end: 4),
                 height: material_._subHeaderHeight,
                 child: new Row(
                     children: rowChildren
             return new Column(
                 children: new List<Widget> {
                     new Container(
-                        //TODO: update EdgeInsetsGeometry
-                        padding: (EdgeInsets) (EdgeInsetsGeometry) EdgeInsetsDirectional.only(start: 16, end: 4),
+                        padding: EdgeInsetsDirectional.only(start: 16, end: 4),
                         height: material_._subHeaderHeight,
                         child:
                         new Row(

com.unity.uiwidgets/Runtime/material/pickers/date_picker_dialog.cs

         public static readonly Size _inputLandscapeDialogSize = new Size(496f, 160.0f);
         public static readonly TimeSpan _dialogSizeAnimationDuration = new TimeSpan(0, 0, 0, 0, 200);
 
-        public Future<DateTime> showDatePicker(
+        public static Future<DateTime> showDatePicker(
             BuildContext context,
             DateTime initialDate,
             DateTime firstDate,

com.unity.uiwidgets/Runtime/material/popup_menu.cs

     }
 
 
-    public class PopupMenuDivider : PopupMenuEntry<object> {
+    public class PopupMenuDivider<T> : PopupMenuEntry<T> {
         public PopupMenuDivider(Key key = null, float height = material_._kMenuDividerHeight) : base(key: key) {
             _height = height;
         }
             get { return _height; }
         }
 
-        public override bool represents(object value) {
+        public override bool represents(T value) {
-            return new _PopupMenuDividerState();
+            return new _PopupMenuDividerState<T>();
-    class _PopupMenuDividerState : State<PopupMenuDivider> {
+    class _PopupMenuDividerState<T> : State<PopupMenuDivider<T>> {
         public override Widget build(BuildContext context) {
             return new Divider(height: widget.height);
         }
         }
     }
 
-    class CheckedPopupMenuItem<T> : PopupMenuItem<T> {
+    public class CheckedPopupMenuItem<T> : PopupMenuItem<T> {
         public CheckedPopupMenuItem(
             Key key = null,
             T value = default,
             PopupMenuCanceled onCanceled = null,
             string tooltip = null,
             float? elevation = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Widget child = null,
             Icon icon = null,
             Offset offset = null,
 
         public readonly float? elevation;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly Widget child;
 

com.unity.uiwidgets/Runtime/material/raised_button.cs

             float? hoverElevation = null,
             float? highlightElevation = null,
             float? disabledElevation = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             VisualDensity visualDensity = null,
             ShapeBorder shape = null,
             Clip? clipBehavior = Clip.none,
             Clip? clipBehavior = null,
             FocusNode focusNode = null,
             bool autofocus = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             MaterialTapTargetSize? materialTapTargetSize = null,
             TimeSpan? animationDuration = null,
             Widget icon = null,
                 defaultValue: null));
             properties.add(new DiagnosticsProperty<float?>("disabledElevation", disabledElevation,
                 defaultValue: null));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("padding", padding, defaultValue: null));
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("padding", padding, defaultValue: null));
             properties.add(new DiagnosticsProperty<ShapeBorder>("shape", shape, defaultValue: null));
             properties.add(new DiagnosticsProperty<MaterialTapTargetSize?>("materialTapTargetSize",
                 materialTapTargetSize, defaultValue: null));
             Clip? clipBehavior = Clip.none,
             FocusNode focusNode = null,
             bool autofocus = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             MaterialTapTargetSize? materialTapTargetSize = null,
             TimeSpan? animationDuration = null,
             Widget icon = null,

com.unity.uiwidgets/Runtime/material/selectable_text.cs

 
   public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
       base.debugFillProperties(properties);
-      properties.add( new DiagnosticsProperty<String>("data", data, defaultValue: null));
+      properties.add( new DiagnosticsProperty<string>("data", data, defaultValue: null));
       properties.add( new DiagnosticsProperty<FocusNode>("focusNode", focusNode, defaultValue: null));
       properties.add( new DiagnosticsProperty<TextStyle>("style", style, defaultValue: null));
       properties.add( new DiagnosticsProperty<bool>("autofocus", autofocus, defaultValue: false));

com.unity.uiwidgets/Runtime/material/slider_theme.cs

             D.assert(sliderTheme.thumbColor != null);
 
             Canvas canvas = context.canvas;
-            Tween<float> radiusTween = new Tween<float>(
+            Tween<float> radiusTween = new FloatTween(
                 begin: _disabledThumbRadius,
                 end: enabledThumbRadius
             );
             D.assert(sliderTheme.overlappingShapeStrokeColor != null);
             D.assert(enableAnimation != null);
             Canvas canvas = context.canvas;
-            Tween<float> radiusTween = new Tween<float>(
+            Tween<float> radiusTween = new FloatTween(
                 begin: _disabledThumbRadius,
                 end: enabledThumbRadius
             );

com.unity.uiwidgets/Runtime/material/swtich_list_tile.cs

             Widget subtitle = null,
             bool isThreeLine = false,
             bool? dense = null,
-            EdgeInsets contentPadding = null,
+            EdgeInsetsGeometry contentPadding = null,
             Widget secondary = null,
             bool selected = false,
             _SwitchListTileType _switchListTileType = _SwitchListTileType.material
         public readonly bool? dense;
 
 
-        public readonly EdgeInsets contentPadding;
+        public readonly EdgeInsetsGeometry contentPadding;
 
 
         public readonly bool selected;

com.unity.uiwidgets/Runtime/material/tab_bar_theme.cs

             Decoration indicator = null,
             TabBarIndicatorSize? indicatorSize = null,
             Color labelColor = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             TextStyle labelStyle = null,
             Color unselectedLabelColor = null,
             TextStyle unselectedLabelStyle = null) {
 
         public readonly Color labelColor;
 
-        public readonly EdgeInsets labelPadding;
+        public readonly EdgeInsetsGeometry labelPadding;
 
         public readonly TextStyle labelStyle;
 
             Decoration indicator = null,
             TabBarIndicatorSize? indicatorSize = null,
             Color labelColor = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             TextStyle labelStyle = null,
             Color unselectedLabelColor = null,
             TextStyle unselectedLabelStyle = null
                 indicator: Decoration.lerp(a.indicator, b.indicator, t),
                 indicatorSize: t < 0.5 ? a.indicatorSize : b.indicatorSize,
                 labelColor: Color.lerp(a.labelColor, b.labelColor, t),
-                labelPadding: EdgeInsets.lerp(a.labelPadding, b.labelPadding, t),
+                labelPadding: EdgeInsetsGeometry.lerp(a.labelPadding, b.labelPadding, t),
                 labelStyle: TextStyle.lerp(a.labelStyle, b.labelStyle, t),
                 unselectedLabelColor: Color.lerp(a.unselectedLabelColor, b.unselectedLabelColor, t),
                 unselectedLabelStyle: TextStyle.lerp(a.unselectedLabelStyle, b.unselectedLabelStyle, t)

com.unity.uiwidgets/Runtime/material/tab_indicator.cs

     public class UnderlineTabIndicator : Decoration {
         public UnderlineTabIndicator(
             BorderSide borderSide = null,
-            EdgeInsets insets = null) {
+            EdgeInsetsGeometry insets = null) {
             borderSide = borderSide ?? new BorderSide(width: 2.0f, color: Colors.white);
             insets = insets ?? EdgeInsets.zero;
             this.borderSide = borderSide;
         public readonly BorderSide borderSide;
 
-        public readonly EdgeInsets insets;
+        public readonly EdgeInsetsGeometry insets;
 
         public override Decoration lerpFrom(Decoration a, float t) {
             if (a is UnderlineTabIndicator) {
-                    insets: EdgeInsets.lerp(_a.insets, insets, t)
+                    insets: EdgeInsetsGeometry.lerp(_a.insets, insets, t)
                 );
             }
 
                 UnderlineTabIndicator _b = (UnderlineTabIndicator) b;
                 return new UnderlineTabIndicator(
                     borderSide: BorderSide.lerp(borderSide, _b.borderSide, t),
-                    insets: EdgeInsets.lerp(insets, _b.insets, t)
+                    insets: EdgeInsetsGeometry.lerp(insets, _b.insets, t)
                 );
             }
 
             get { return decoration.borderSide; }
         }
 
-        public EdgeInsets insets {
+        public EdgeInsetsGeometry insets {
-        Rect _indicatorRectFor(Rect rect) {
+        Rect _indicatorRectFor(Rect rect, TextDirection textDirection) {
-            Rect indicator = insets.deflateRect(rect);
+            Rect indicator = insets.resolve(textDirection).deflateRect(rect);
             return Rect.fromLTWH(
                 indicator.left,
                 indicator.bottom - borderSide.width,
             D.assert(configuration != null);
             D.assert(configuration.size != null);
             Rect rect = offset & configuration.size;
-            Rect indicator = _indicatorRectFor(rect).deflate(borderSide.width / 2.0f);
+            TextDirection textDirection = configuration.textDirection;
+            Rect indicator = _indicatorRectFor(rect, textDirection).deflate(borderSide.width / 2.0f);
             Paint paint = borderSide.toPaint();
             paint.strokeCap = StrokeCap.square;
             canvas.drawLine(indicator.bottomLeft, indicator.bottomRight, paint);

com.unity.uiwidgets/Runtime/material/tabs.cs

             Key key = null,
             string text = null,
             Widget icon = null,
-            EdgeInsets iconMargin = null,
+            EdgeInsetsGeometry iconMargin = null,
             Widget child = null
         ) : base(key: key) {
             D.assert(text != null || child != null || icon != null);
 
         public readonly Widget icon;
 
-        public readonly EdgeInsets iconMargin;
+        public readonly EdgeInsetsGeometry iconMargin;
 
         Widget _buildLabelText() {
             return child ?? new Text(text, softWrap: false, overflow: TextOverflow.fade);
             bool isScrollable = false,
             Color indicatorColor = null,
             float indicatorWeight = 2.0f,
-            EdgeInsets indicatorPadding = null,
+            EdgeInsetsGeometry indicatorPadding = null,
-            EdgeInsets labelPadding = null,
+            EdgeInsetsGeometry labelPadding = null,
             Color unselectedLabelColor = null,
             TextStyle unselectedLabelStyle = null,
             DragStartBehavior dragStartBehavior = DragStartBehavior.start,
 
         public readonly float indicatorWeight;
 
-        public readonly EdgeInsets indicatorPadding;
+        public readonly EdgeInsetsGeometry indicatorPadding;
 
         public readonly Decoration indicator;
 
 
         public readonly TextStyle labelStyle;
 
-        public readonly EdgeInsets labelPadding;
+        public readonly EdgeInsetsGeometry labelPadding;
 
         public readonly TextStyle unselectedLabelStyle;
 

com.unity.uiwidgets/Runtime/material/text_field.cs

             properties.add(new ColorProperty("cursorColor", cursorColor, defaultValue: null));
             properties.add(new DiagnosticsProperty<Brightness?>("keyboardAppearance", keyboardAppearance,
                 defaultValue: null));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("scrollPadding", scrollPadding,
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("scrollPadding", scrollPadding,
                 defaultValue: EdgeInsets.all(20.0f)));
             properties.add(new FlagProperty("selectionEnabled", value: selectionEnabled, defaultValue: true,
                 ifFalse: "selection disabled"));

com.unity.uiwidgets/Runtime/material/time_picker.cs

             );
 
             //the end will be set to be valid value later, we just make it 1f by default here
-            _thetaTween = new Tween<float>(begin: _getThetaForTime(widget.selectedTime), end: 1f);
+            _thetaTween = new FloatTween(begin: _getThetaForTime(widget.selectedTime), end: 1f);
             _theta = _thetaController
                 .drive(new CurveTween(curve: Curves.fastOutSlowIn))
                 .drive(_thetaTween);

com.unity.uiwidgets/Runtime/material/tooltip.cs

             Key key = null,
             string message = null,
             float? height = null,
-            EdgeInsets padding = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry padding = null,
+            EdgeInsetsGeometry margin = null,
             float? verticalOffset = null,
             bool? preferBelow = null,
             bool? excludeFromSemantics = null,
 
         public readonly float? height;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
         
         public readonly float? verticalOffset;
 
         static float _defaultTooltipHeight = 32.0f;
         static float _defaultVerticalOffset = 24.0f;
         static bool _defaultPreferBelow = true;
-        static EdgeInsets _defaultPadding = EdgeInsets.symmetric(horizontal: 16.0f);
-        static EdgeInsets _defaultMargin = EdgeInsets.all(0.0f);
+        static EdgeInsetsGeometry _defaultPadding = EdgeInsets.symmetric(horizontal: 16.0f);
+        static EdgeInsetsGeometry _defaultMargin = EdgeInsets.all(0.0f);
         static TimeSpan _fadeInDuration = new TimeSpan(0,0,0,0, 150);
         static TimeSpan _fadeOutDuration =new TimeSpan(0,0,0,0, 75);
         static TimeSpan _defaultShowDuration =new TimeSpan(0,0,0,0,1500);
         float height;
         
-        EdgeInsets padding;
+        EdgeInsetsGeometry padding;
-        EdgeInsets margin;
+        EdgeInsetsGeometry margin;
         
         Decoration decoration;
         
             Key key = null,
             string message = null,
             float? height = null,
-            EdgeInsets padding = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry padding = null,
+            EdgeInsetsGeometry margin = null,
             Decoration decoration = null,
             TextStyle textStyle = null,
             Animation<float> animation = null,
 
         public readonly float? height;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
 
         public readonly Decoration decoration;
 

com.unity.uiwidgets/Runtime/material/tooltip_theme.cs

     public class TooltipThemeData : Diagnosticable, IEquatable<TooltipThemeData> {
         public TooltipThemeData(
             float? height = null,
-            EdgeInsets padding = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry padding = null,
+            EdgeInsetsGeometry margin = null,
             float? verticalOffset = null,
             bool? preferBelow = null,
             bool? excludeFromSemantics = null,
         
         public readonly float? height;
         
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
         
         public readonly float? verticalOffset;
         
 
         public TooltipThemeData copyWith(
             float? height = null,
-            EdgeInsets padding = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry padding = null,
+            EdgeInsetsGeometry margin = null,
             float? verticalOffset = null,
             bool? preferBelow = null,
             bool? excludeFromSemantics = null,
 
             return new TooltipThemeData(
               height: MathUtils.lerpNullableFloat(a?.height, b?.height, t),
-              padding: EdgeInsets.lerp(a?.padding, b?.padding, t),
-              margin: EdgeInsets.lerp(a?.margin, b?.margin, t),
+              padding: EdgeInsetsGeometry.lerp(a?.padding, b?.padding, t),
+              margin: EdgeInsetsGeometry.lerp(a?.margin, b?.margin, t),
               verticalOffset: MathUtils.lerpNullableFloat(a?.verticalOffset, b?.verticalOffset, t),
               preferBelow: t < 0.5f ? a.preferBelow: b.preferBelow,
               excludeFromSemantics: t < 0.5f ? a.excludeFromSemantics : b.excludeFromSemantics,

com.unity.uiwidgets/Runtime/material/user_accounts_drawer_header.cs

         public UserAccountsDrawerHeader(
             Key key = null,
             Decoration decoration = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry margin = null,
             Widget currentAccountPicture = null,
             List<Widget> otherAccountsPictures = null,
             Widget accountName = null,
 
         public readonly Decoration decoration;
 
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
 
         public readonly Widget currentAccountPicture;
 

com.unity.uiwidgets/Runtime/material/swtich_list_tile.cs.meta

 fileFormatVersion: 2
-guid: eeb5dc81b18e644e69b2b89cf48b8f3b
+guid: 85561be4b3ea5344283f3996f3e8efc7
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

com.unity.uiwidgets/Runtime/painting/alignment.cs

         }
 
 
-        internal static String _stringify(float x, float y) {
+        internal static string _stringify(float x, float y) {
             if (x == -1.0f && y == -1.0f)
                 return "topLeft";
             if (x == 0.0f && y == -1.0f)
             return null;
         }
 
-        internal static String _stringify(double start, double y) {
+        internal static string _stringify(double start, double y) {
             if (start == -1.0f && y == -1.0f)
                 return "AlignmentDirectional.topStart";
             if (start == 0.0f && y == -1.0f)

com.unity.uiwidgets/Runtime/painting/border_radius.cs

         public abstract BorderRadius resolve(TextDirection? textDirection);
 
         public override string ToString() {
-            String visual = null, logical = null;
+            string visual = null, logical = null;
             if (_topLeft == _topRight &&
                 _topRight == _bottomLeft &&
                 _bottomLeft == _bottomRight) {

com.unity.uiwidgets/Runtime/painting/box_border.cs

 
 
         public override string ToString() {
-            List<String> arguments = new List<string>();
+            List<string> arguments = new List<string>();
             if
                 (top != BorderSide.none) {
                 arguments.Add("top: $top");

com.unity.uiwidgets/Runtime/painting/edge_insets.cs

             );
         }
 
-        protected EdgeInsetsGeometry add(EdgeInsetsGeometry other) {
+        public EdgeInsetsGeometry add(EdgeInsetsGeometry other) {
             return _MixedEdgeInsets.fromLRSETB(
                 _left + other._left,
                 _right + other._right,
                 return false;
             }
 
-            return Equals((EdgeInsets) obj);
+            return Equals((EdgeInsetsGeometry) obj);
         }
 
         public override int GetHashCode() {

com.unity.uiwidgets/Runtime/painting/text_style.cs

             int? maxLines = null,
             TextHeightBehavior textHeightBehavior = null,
             Locale locale = null,
-            String fontFamily = null,
+            string fontFamily = null,
             float? fontSize = null,
             FontWeight fontWeight = null,
             FontStyle? fontStyle = null,
             TextAlign? textAlign = null,
             TextDirection? textDirection = null,
             float textScaleFactor = 1.0f,
-            String ellipsis = null,
+            string ellipsis = null,
-            String fontFamily = null,
+            string fontFamily = null,
             float? fontSize = null,
             FontWeight fontWeight = null,
             FontStyle? fontStyle = null,

com.unity.uiwidgets/Runtime/rendering/flex.cs

         
         
         public override string toStringShort() {
-            String header = base.toStringShort();
+            string header = base.toStringShort();
             if (_overflow is float && _hasOverflow)
                 header += " OVERFLOWING";
             return header;

com.unity.uiwidgets/Runtime/rendering/sliver_padding.cs

 
     public class RenderSliverPadding : RenderSliverEdgeInsetsPadding {
         public RenderSliverPadding(
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             TextDirection? textDirection = null,
             RenderSliver child = null
         ) {
             _resolvedPadding = null;
             markNeedsLayout();
         }
-        public EdgeInsets padding {
+        public EdgeInsetsGeometry padding {
             get { return _padding; }
             set {
                 D.assert(value != null);
             }
         }
 
-        EdgeInsets _padding;
+        EdgeInsetsGeometry _padding;
 
         public TextDirection textDirection {
             get { return _textDirection;}

com.unity.uiwidgets/Runtime/services/asset_bundle.cs

             });
         }
 
-        public abstract Future<T> loadStructuredData<T>(String key, Func<string, Future<T>> parser);
+        public abstract Future<T> loadStructuredData<T>(string key, Func<string, Future<T>> parser);
-        public virtual void evict(String key) {
+        public virtual void evict(string key) {
         }
 
         public override string ToString() => $"{foundation_.describeIdentity(this)}()";
             return base.loadString(key);
         }
 
-        public override Future<T> loadStructuredData<T>(String key, Func<string, Future<T>> parser) {
+        public override Future<T> loadStructuredData<T>(string key, Func<string, Future<T>> parser) {
             D.assert(key != null);
             D.assert(parser != null);
             if (_structuredDataCache.ContainsKey(key))

com.unity.uiwidgets/Runtime/services/keyboard.cs

-
+using Unity.UIWidgets.async2;
+using Unity.UIWidgets.gestures;
-
+
-    
-    public delegate RawInputKeyResponse GlobalKeyEventHandlerDelegate(RawKeyEvent rawEvt, bool enableCustomAction = false);
-    
+    public delegate RawInputKeyResponse GlobalKeyEventHandlerDelegate(RawKeyEvent rawEvt,
+        bool enableCustomAction = false);
+
     public class RawInputKeyResponse {
         public readonly bool swallow;
         public readonly char input;
             this.input = input;
             this.inputAction = inputAction;
         }
-        
+
-                false, 
+                false,
                 evt.data.unityEvent.character,
                 null);
         }
 
-    interface KeyboardDelegate: IDisposable {
+    interface KeyboardDelegate : IDisposable {
-        
+
         void setStyle(Dictionary<string, object> args);
         void setIMEPos(Offset imeGlobalPos);
 
         bool imeRequired();
-        
-        
-    
+
-
-        
+
         TextEditingValue _value;
 
         public void show() {
         }
 
         public void setEditableSizeAndTransform(Dictionary<string, object> args) {
-             //todo
+            //todo
-             //todo 
+            //todo 
         }
 
         Offset _editorWindowPosToScreenPos(Offset position) {
 
         public void setIMEPos(Offset imeGlobalPos) {
             var uiWidgetWindowAdapter = Window.instance;
-            Offset screenPos = uiWidgetWindowAdapter != null 
-                ? uiWidgetWindowAdapter.windowPosToScreenPos(imeGlobalPos) 
+            Offset screenPos = uiWidgetWindowAdapter != null
+                ? uiWidgetWindowAdapter.windowPosToScreenPos(imeGlobalPos)
-            
+
             Input.compositionCursorPos = new Vector2(screenPos.dx, screenPos.dy);
         }
 
             if (_client == 0) {
                 return;
             }
-            
-            
-            var currentEvent = Event.current;
-            var oldValue = _value;
-            if (currentEvent != null && currentEvent.type == EventType.KeyDown) {
-                var response = TextInput._handleGlobalInputKey(_client,
-                    new RawKeyDownEvent(new RawKeyEventData(currentEvent)));
-                if (response.swallow) {
-                    if (response.inputAction != null) {
-                        Window.instance.run(() => { TextInput._performAction(_client, response.inputAction.Value); });
+            while (!PointerEventConverter.KeyEvent.isEmpty()) {
+                var currentEvent = PointerEventConverter.KeyEvent.Dequeue();
+                var oldValue = _value;
+
+                if (currentEvent != null && currentEvent.type == EventType.KeyDown) {
+                    var response = TextInput._handleGlobalInputKey(_client,
+                        new RawKeyDownEvent(new RawKeyEventData(currentEvent)));
+
+                    if (response.swallow) {
+                        if (response.inputAction != null) {
+                            Timer.create(TimeSpan.Zero,
+                                () => { TextInput._performAction(_client, response.inputAction.Value); });
+                        }
+
+                        if (_validateCharacter(response.input)) {
+                            _value = _value.insert(new string(response.input, 1));
+                        }
-                    
-                    if (_validateCharacter(response.input)) {
-                        _value = _value.insert(new string(response.input, 1));
+                    else if (currentEvent.keyCode == KeyCode.Backspace) {
+                        if (_value.selection.isValid) {
+                            _value = _value.deleteSelection(true);
+                        }
-                } else if (currentEvent.keyCode == KeyCode.Backspace) {
-                    if (_value.selection.isValid) {
-                        _value = _value.deleteSelection(true);
-                    }
-                } else if (currentEvent.character != '\0') {
-                    _value = _value.clearCompose();
-                    char ch = currentEvent.character;
-                    if (ch == '\r' || ch == 3) {
-                        ch = '\n';
-                    }
+                    else if (currentEvent.character != '\0') {
+                        _value = _value.clearCompose();
+                        char ch = currentEvent.character;
+                        if (ch == '\r' || ch == 3) {
+                            ch = '\n';
+                        }
-                    if (ch == '\n') {
-                        Window.instance.run(() => { TextInput._performAction(_client, TextInputAction.newline); });
+                        if (ch == '\n') {
+                            Timer.create(TimeSpan.Zero, () => { TextInput._performAction(_client, TextInputAction.newline); });
+                        }
+
+                        if (_validateCharacter(ch)) {
+                            _value = _value.insert(new string(ch, 1));
+                        }
-                    
-                    if (_validateCharacter(ch)) {
-                        _value = _value.insert(new string(ch, 1));
+                    else if (!string.IsNullOrEmpty(currentEvent.keyCode.ToString())) {
+                        isIMEInput = true;
+                        _value = _value.compose(currentEvent.keyCode.ToString());
+
+                    currentEvent.Use();
-                else if (!string.IsNullOrEmpty(Input.compositionString)) {
-                    isIMEInput = true;
-                    _value = _value.compose(Input.compositionString);
-                }
-                
-                currentEvent.Use();
-            }
-            if (_value != oldValue) {
-                if (this.isIMEInput) {
-                    var isIMEInput = this.isIMEInput;
-                    Window.instance.run(() => { TextInput._updateEditingState(_client, _value, isIMEInput); });
-                    this.isIMEInput = false;
-                }
-                else {
-                    Window.instance.run(() => { TextInput._updateEditingState(_client, _value); });
+                if (_value != oldValue) {
+                    if (this.isIMEInput) {
+                        var isIMEInput = this.isIMEInput;
+                        Timer.create(TimeSpan.Zero,
+                            () => { TextInput._updateEditingState(_client, _value, isIMEInput); });
+                        this.isIMEInput = false;
+                    }
+                    else {
+                        Timer.create(TimeSpan.Zero, () => { TextInput._updateEditingState(_client, _value, isIMEInput); });
+                    }
                 }
             }
         }
             return ch >= ' ' || ch == '\t' || ch == '\r' || ch == 10 || ch == '\n';
         }
     }
-    
+
     class UnityTouchScreenKeyboardDelegate : KeyboardDelegate, TextInputUpdateListener {
         int _client;
         string _lastCompositionString;
             if (_keyboard.status == TouchScreenKeyboard.Status.Done) {
                 if (!_screenKeyboardDone) {
                     _screenKeyboardDone = true;
-                    Window.instance.run(() => {
+                    Timer.create(TimeSpan.Zero, () => {
                         TextInput._performAction(_client,
                             TextInputAction.done);
                     });
                         : TextSelection.collapsed(0)
                 );
                 var changed = _value != newValue;
-                
+
-                    Window.instance.run(() => {
+                    Timer.create(TimeSpan.Zero, () => {
                         TextInput._updateEditingState(_client,
                             _value);
                     });
     }
 
     abstract class AbstractUIWidgetsKeyboardDelegate : KeyboardDelegate {
-        
-            UIWidgetsMessageManager.instance.
-                AddChannelMessageDelegate("TextInput", _handleMethodCall);
+            UIWidgetsMessageManager.instance.AddChannelMessageDelegate("TextInput", _handleMethodCall);
-        
+
-            UIWidgetsMessageManager.instance.
-                RemoveChannelMessageDelegate("TextInput", _handleMethodCall);
+            UIWidgetsMessageManager.instance.RemoveChannelMessageDelegate("TextInput", _handleMethodCall);
         }
 
         public abstract void show();
         public abstract void setEditingState(TextEditingValue value);
+
         public void setEditableSizeAndTransform(Dictionary<string, object> args) {
             throw new NotImplementedException();
         }
         public abstract void setClient(int client, TextInputConfiguration configuration);
 
         public abstract void clearClient();
+
         public virtual bool imeRequired() {
             return false;
         }
-            
+
             /*if (TextInput._currentConnection == null) {
                 return;
             }
                         throw new UIWidgetsError($"unknown method ${method}");
                 }
             }*/
-        } 
+        }
-    
+
 #if UNITY_WEBGL
     class UIWidgetsWebGLKeyboardDelegate : AbstractUIWidgetsKeyboardDelegate {
         
 
     }
 #endif
-    
+
 #if UNITY_IOS || UNITY_ANDROID
     class UIWidgetsTouchScreenKeyboardDelegate : AbstractUIWidgetsKeyboardDelegate {
 
 #elif UNITY_ANDROID
         internal static void UIWidgetsTextInputShow() {
             using (
-                AndroidJavaClass pluginClass = new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
+                AndroidJavaClass pluginClass =
+ new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
             ) {
                 pluginClass.CallStatic("show");
             }
             using (
-                AndroidJavaClass pluginClass = new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
+                AndroidJavaClass pluginClass =
+ new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
             ) {
                 pluginClass.CallStatic("hide");
             }
             using (
-                AndroidJavaClass pluginClass = new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
+                AndroidJavaClass pluginClass =
+ new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
             ) {
                
                 pluginClass.CallStatic("setClient", client, configuration);
         internal static void UIWidgetsTextInputSetTextInputEditingState(string jsonText) {
             using (
-                AndroidJavaClass pluginClass = new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
+                AndroidJavaClass pluginClass =
+ new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
             ) {
                 pluginClass.CallStatic("setEditingState", jsonText);
             }
             using (
-                AndroidJavaClass pluginClass = new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
+                AndroidJavaClass pluginClass =
+ new AndroidJavaClass("com.unity.uiwidgets.plugin.editing.TextInputPlugin")
             ) {
                 pluginClass.CallStatic("clearClient");
             }
-#endif  
+#endif
 }

com.unity.uiwidgets/Runtime/services/text_input.cs

             TextSelection selection = null,
             TextRange composing = null) {
             selection = selection ?? TextSelection.collapsed(offset: -1);
+            
             D.assert(text != null);
             this.text = text;
             this.composing = composing ?? TextRange.empty;
         
         static int _nextId = 1;
         internal readonly int _id;
+        
+        public void setIMEPos(Offset imeGlobalPos) {
+            D.assert(attached);
+            D.assert(imeGlobalPos != null);
+            D.assert(imeRequired());
+            TextInput.keyboardDelegate.setIMEPos(imeGlobalPos);
+        }
+        
+        public bool imeRequired() {
+            return TextInput.keyboardDelegate != null && TextInput.keyboardDelegate.imeRequired();
+        }
+        
         public static void debugResetId(int to = 1) {
             D.assert(() =>{
                 _nextId = to;

com.unity.uiwidgets/Runtime/ui2/compositing.cs

             return true;
         }
 
-        bool _debugCheckCanBeUsedAsOldLayer(_EngineLayerWrapper layer, String methodName) {
+        bool _debugCheckCanBeUsedAsOldLayer(_EngineLayerWrapper layer, string methodName) {
             D.assert(() => {
                 if (layer == null) {
                     return true;

com.unity.uiwidgets/Runtime/ui2/pointer.cs

         down,
         move,
         up,
+        kMouseDown,
+        kMouseUp,
-        touch,
-        mouse,
+        touch = 0,
+        mouse = 1,
-        unknown
+        keyboard = 4,
+        unknown,
     }
 
     public enum PointerSignalKind {

com.unity.uiwidgets/Runtime/ui2/text.cs

 
         public string textInside(string text) {
             D.assert(isNormalized);
-            return text.Substring(start, end);
+            return text.Substring(start, end - start);
         }
 
         public override string ToString() {

com.unity.uiwidgets/Runtime/ui2/window.cs

         public bool highContrast => (_kHighContrastIndex & _index) != 0;
 
         public override string ToString() {
-            List<String> features = new List<String>();
+            List<string> features = new List<string>();
             if (accessibleNavigation)
                 features.Add("accessibleNavigation");
             if (invertColors)

com.unity.uiwidgets/Runtime/widgets/animated_list.cs

             while (min < max) {
                 int mid = min + ((max - min) >> 1);
                 T element = sortedList[mid];
-                int comp = element.compareTo(value);
+                int comp = element.CompareTo(value);
                 if (comp == 0) {
                     return mid;
                 }
         }
     }
 
-    public class _ActiveItem  : Comparable<_ActiveItem> {
+    public class _ActiveItem  : IComparable {
         
         public _ActiveItem(
             AnimationController controller,
         public int itemIndex;
 
 
-        public int compareTo(_ActiveItem other) {
-       
-            return itemIndex - other.itemIndex;
-        }
-
-        public int compare(Comparable<_ActiveItem> a, _ActiveItem b) {
-            return 0;
-            //throw new NotImplementedException();
+        public int CompareTo(object other) {
+            D.assert(GetType() == other.GetType());
+            return itemIndex - ((_ActiveItem)other).itemIndex;
         }
     }
     public class AnimatedList : StatefulWidget {
                 shrinkWrap: widget.shrinkWrap, 
                 slivers: new List<Widget>{
                     new SliverPadding(
-                        padding: (EdgeInsets)widget.padding ??  EdgeInsets.all(0), 
+                        padding: widget.padding ??  EdgeInsets.all(0), 
                         sliver: new SliverAnimatedList(
                             key: _sliverAnimatedListKey, 
                             itemBuilder: widget.itemBuilder, 

com.unity.uiwidgets/Runtime/widgets/basic.cs

             Offset translation = null,
             bool transformHitTests = true,
             Widget child = null) : base(key: key, child: child) {
+            D.assert(translation != null);
             this.translation = translation;
             this.transformHitTests = transformHitTests;
         }
     public class SliverPadding : SingleChildRenderObjectWidget {
         public SliverPadding(
             Key key = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Widget sliver = null
         ) : base(key: key, child: sliver) {
             D.assert(padding != null);
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public override RenderObject createRenderObject(BuildContext context) {
             return new RenderSliverPadding(
 
         public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
             base.debugFillProperties(properties);
-            properties.add(new DiagnosticsProperty<EdgeInsets>("padding", padding));
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("padding", padding));
         }
     }
 

com.unity.uiwidgets/Runtime/widgets/container.cs

         public Container(
             Key key = null,
             AlignmentGeometry alignment = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Color color = null,
             Decoration decoration = null,
             Decoration foregroundDecoration = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry margin = null,
             Matrix4 transform = null,
             Widget child = null,
             Clip clipBehavior = Clip.none
 
         public readonly Widget child;
         public readonly AlignmentGeometry alignment;
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
-        EdgeInsets _paddingIncludingDecoration {
+        EdgeInsetsGeometry _paddingIncludingDecoration {
-                //Debug.LogError("EdgeInsets needs to be update to EdgeInsetsGeometry");
-                EdgeInsets decorationPadding = (EdgeInsets)decoration.padding;
+                EdgeInsetsGeometry decorationPadding = decoration.padding;
                 if (padding == null) {
                     return decorationPadding;
                 }
                 current = new Align(alignment: alignment, child: current);
             }
 
-            EdgeInsets effetivePadding = _paddingIncludingDecoration;
+            EdgeInsetsGeometry effetivePadding = _paddingIncludingDecoration;
             if (effetivePadding != null) {
                 current = new Padding(padding: effetivePadding, child: current);
             }
             base.debugFillProperties(properties);
             properties.add(new DiagnosticsProperty<AlignmentGeometry>("alignment",
                 alignment, showName: false, defaultValue: foundation_.kNullDefaultValue));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("padding",
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("padding",
                 padding, defaultValue: foundation_.kNullDefaultValue));
             properties.add(new DiagnosticsProperty<Clip>("clipBehavior", clipBehavior, defaultValue: Clip.none));
             if (color != null)
                 foregroundDecoration, defaultValue: foundation_.kNullDefaultValue));
             properties.add(new DiagnosticsProperty<BoxConstraints>("constraints",
                 constraints, defaultValue: foundation_.kNullDefaultValue));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("margin",
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("margin",
                 margin, defaultValue: foundation_.kNullDefaultValue));
             properties.add(ObjectFlagProperty<Matrix4>.has("transform",
                 transform));

com.unity.uiwidgets/Runtime/widgets/editable_text.cs

             bool cursorOpacityAnimates = false,
             Offset cursorOffset = null,
             bool paintCursorAboveText = false,
-            ui.BoxHeightStyle selectionHeightStyle = ui.BoxHeightStyle.tight,
-            ui.BoxWidthStyle selectionWidthStyle = ui.BoxWidthStyle.tight,
+            BoxHeightStyle selectionHeightStyle = BoxHeightStyle.tight,
+            BoxWidthStyle selectionWidthStyle = BoxWidthStyle.tight,
             EdgeInsets scrollPadding = null,
             Brightness? keyboardAppearance = Brightness.light,
             DragStartBehavior dragStartBehavior = DragStartBehavior.start,
         public readonly VoidCallback onSelectionHandleTapped;
         public readonly ScrollController scrollController;
         public readonly bool showCursor;
-        public readonly ui.BoxHeightStyle selectionHeightStyle;
-        public readonly ui.BoxWidthStyle selectionWidthStyle;
+        public readonly BoxHeightStyle selectionHeightStyle;
+        public readonly BoxWidthStyle selectionWidthStyle;
         public readonly bool forceLine;
         public readonly bool showSelectionHandles ;
         public readonly ToolbarOptions toolbarOptions;
             properties.add( new DiagnosticsProperty<bool>("enableSuggestions", enableSuggestions, defaultValue: true));
             style?.debugFillProperties(properties);
             properties.add( new EnumProperty<TextAlign>("textAlign", textAlign, defaultValue: null));
-            properties.add( new EnumProperty<TextDirection>("textDirection", textDirection.Value, defaultValue: null));
+            properties.add( new EnumProperty<TextDirection?>("textDirection", textDirection, defaultValue: null));
             properties.add( new DiagnosticsProperty<Locale>("locale", locale, defaultValue: null));
             properties.add( new FloatProperty("textScaleFactor", textScaleFactor, defaultValue: null));
             properties.add( new IntProperty("maxLines", maxLines, defaultValue: 1));
 
         void _didChangeTextEditingValue() {
             _updateRemoteEditingValueIfNeeded();
-            //_updateImePosIfNeed();
+            _updateImePosIfNeed();
             _startOrStopCursorTimerIfNeeded();
             _updateOrDisposeSelectionOverlayIfNeeded();
             _textChangedSinceLastCaretUpdate = true;
             return TouchScreenKeyboard.isSupported && widget.unityTouchKeyboard;
         }
 
-        
+        Offset _getImePos() {
+            if (_hasInputConnection && _textInputConnection.imeRequired()) {
+                var localPos = renderEditable.getLocalRectForCaret(_value.selection.basePos).bottomLeft;
+                return renderEditable.localToGlobal(localPos);
+            }
+
+            return null;
+        }
+        void _updateImePosIfNeed() {
+            if (!_hasInputConnection || !_textInputConnection.imeRequired()) {
+                return;
+            }
+
+            if (_imePosUpdateScheduled) {
+                return;
+            }
+
+            _imePosUpdateScheduled = true;
+            SchedulerBinding.instance.addPostFrameCallback(_ => {
+                _imePosUpdateScheduled = false;
+                if (!_hasInputConnection) {
+                    return;
+                }
+
+                _textInputConnection.setIMEPos(_getImePos());
+            });
+        }
         
     }
     
         public readonly float? cursorWidth;
         public readonly Radius cursorRadius;
         public readonly Offset cursorOffset;
-        public readonly ui.BoxHeightStyle selectionHeightStyle;
-        public readonly ui.BoxWidthStyle selectionWidthStyle;
+        public readonly BoxHeightStyle selectionHeightStyle;
+        public readonly BoxWidthStyle selectionWidthStyle;
         public readonly bool enableInteractiveSelection;
         public readonly TextSelectionDelegate textSelectionDelegate;
         public readonly bool? paintCursorAboveText;
             Radius cursorRadius = null,
             Offset cursorOffset = null,
             bool? paintCursorAboveText = null,
-            ui.BoxHeightStyle selectionHeightStyle = ui.BoxHeightStyle.tight,
-            ui.BoxWidthStyle selectionWidthStyle = ui.BoxWidthStyle.tight,
+            BoxHeightStyle selectionHeightStyle = BoxHeightStyle.tight,
+            BoxWidthStyle selectionWidthStyle = BoxWidthStyle.tight,
             bool enableInteractiveSelection = true,
             TextSelectionDelegate textSelectionDelegate = null,
             float? devicePixelRatio = null

com.unity.uiwidgets/Runtime/widgets/focus_manager.cs

             properties.add(new DiagnosticsProperty<FocusNode>("nextFocus", _markedForFocus, defaultValue: null));
             Element element = primaryFocus?.context as Element;
             if (element != null) {
-              properties.add(new DiagnosticsProperty<String>("primaryFocusCreator", element.debugGetCreatorChain(20)));
+              properties.add(new DiagnosticsProperty<string>("primaryFocusCreator", element.debugGetCreatorChain(20)));
             }
         }
     }

com.unity.uiwidgets/Runtime/widgets/focus_traversal.cs

             return sortedList;
         }
     }
-    
-    public interface Comparable<T> {
-      
-        int compareTo(T other);
-        int compare(Comparable<T> a, T b);
-    }
-    public abstract class FocusOrder : Diagnosticable , Comparable<FocusOrder> {
+    public abstract class FocusOrder : Diagnosticable , IComparable {
-        public int compareTo(FocusOrder other) {
+        public int CompareTo(object other) {
-            return doCompare(other);
-        }
-
-        public int compare(Comparable<FocusOrder> a, FocusOrder b) {
-            //throw new NotImplementedException();
-            return a.compareTo(b);
+            return doCompare((FocusOrder) other);
         }
 
         protected abstract int doCompare(FocusOrder other);
                 "Incompatible order types can't be compared.  Use a FocusTraversalGroup to group " +
                 "similar orders together."
               ); 
-                return a.order.compareTo(b.order); 
+                return a.order.CompareTo(b.order); 
             }); 
             return ordered.Select((_OrderedFocusInfo info) => info.node).Concat(unordered);
         }

com.unity.uiwidgets/Runtime/widgets/framework.cs

 
         void visitChildElements(ElementVisitor visitor);
 
-        DiagnosticsNode describeElement(String name, DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty);
+        DiagnosticsNode describeElement(string name, DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty);
-        DiagnosticsNode describeWidget(String name, DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty);
+        DiagnosticsNode describeWidget(string name, DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty);
-        DiagnosticsNode describeOwnershipChain(String name);
+        DiagnosticsNode describeOwnershipChain(string name);
     }
 
     public class BuildOwner {
             return information;
         }
 
-        public static DiagnosticsNode describeElements(String name, IEnumerable<Element> elements) {
+        public static DiagnosticsNode describeElements(string name, IEnumerable<Element> elements) {
             return new DiagnosticsBlock(
                 name: name,
                 children: elements.Select((Element element) => new DiagnosticsProperty<Element>("", element))
             return new DiagnosticsProperty<Element>(name, this, style: style);
         }
 
-        public DiagnosticsNode describeWidget(String name,
+        public DiagnosticsNode describeWidget(string name,
-        public DiagnosticsNode describeOwnershipChain(String name) {
+        public DiagnosticsNode describeOwnershipChain(string name) {
             return new StringProperty(name, debugGetCreatorChain(10));
         }
 

com.unity.uiwidgets/Runtime/widgets/implicit_animations.cs

         public AnimatedContainer(
             Key key = null,
             AlignmentGeometry alignment = null,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             Color color = null,
             Decoration decoration = null,
             Decoration foregroundDecoration = null,
-            EdgeInsets margin = null,
+            EdgeInsetsGeometry margin = null,
             Matrix4 transform = null,
             Widget child = null,
             Curve curve = null,
 
         public readonly AlignmentGeometry alignment;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly Decoration decoration;
 
 
-        public readonly EdgeInsets margin;
+        public readonly EdgeInsetsGeometry margin;
 
         public readonly Matrix4 transform;
 
             base.debugFillProperties(properties);
             properties.add(new DiagnosticsProperty<AlignmentGeometry>("alignment", alignment, showName: false,
                 defaultValue: null));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("padding", padding, defaultValue: null));
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("padding", padding, defaultValue: null));
             properties.add(new DiagnosticsProperty<Decoration>("bg", decoration, defaultValue: null));
             properties.add(
                 new DiagnosticsProperty<Decoration>("fg", foregroundDecoration, defaultValue: null));
-            properties.add(new DiagnosticsProperty<EdgeInsets>("margin", margin, defaultValue: null));
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("margin", margin, defaultValue: null));
             properties.add(ObjectFlagProperty<Matrix4>.has("transform", transform));
         }
     }
-        EdgeInsetsTween _padding;
+        EdgeInsetsGeometryTween _padding;
-        EdgeInsetsTween _margin;
+        EdgeInsetsGeometryTween _margin;
         Matrix4Tween _transform;
 
 
-            _padding = (EdgeInsetsTween) visitor.visit(this, _padding, widget.padding,
-                (EdgeInsets value) => new EdgeInsetsTween(begin: value));
+            _padding = (EdgeInsetsGeometryTween) visitor.visit(this, _padding, widget.padding,
+                ( value) => new EdgeInsetsGeometryTween(begin: value));
             _decoration = (DecorationTween) visitor.visit(this, _decoration, widget.decoration,
                 (Decoration value) => new DecorationTween(begin: value));
             _foregroundDecoration = (DecorationTween) visitor.visit(this, _foregroundDecoration,
-            _margin = (EdgeInsetsTween) visitor.visit(this, _margin, widget.margin,
-                (EdgeInsets value) => new EdgeInsetsTween(begin: value));
+            _margin = (EdgeInsetsGeometryTween) visitor.visit(this, _margin, widget.margin,
+                (value) => new EdgeInsetsGeometryTween(begin: value));
             _transform = (Matrix4Tween) visitor.visit(this, _transform, widget.transform,
                 (Matrix4 value) => new Matrix4Tween(begin: value));
         }
             base.debugFillProperties(description);
             description.add(new DiagnosticsProperty<AlignmentGeometryTween>("alignment", _alignment, showName: false,
                 defaultValue: null));
-            description.add(new DiagnosticsProperty<EdgeInsetsTween>("padding", _padding, defaultValue: null));
+            description.add(new DiagnosticsProperty<EdgeInsetsGeometryTween>("padding", _padding, defaultValue: null));
-            description.add(new DiagnosticsProperty<EdgeInsetsTween>("margin", _margin, defaultValue: null));
+            description.add(new DiagnosticsProperty<EdgeInsetsGeometryTween>("margin", _margin, defaultValue: null));
             description.add(ObjectFlagProperty<Matrix4Tween>.has("transform", _transform));
         }
     }
 
         public override Widget build(BuildContext context) {
             return new Padding(
-                padding: (EdgeInsets) _padding
+                padding: _padding
-                    .clamp(EdgeInsets.zero, EdgeInsets.infinity),
+                    .clamp(EdgeInsets.zero, EdgeInsetsGeometry.infinity),
                 child: widget.child
             );
         }

com.unity.uiwidgets/Runtime/widgets/scroll_view.cs

             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             float? cacheExtent = null,
             DragStartBehavior dragStartBehavior = DragStartBehavior.start,
             ScrollViewKeyboardDismissBehavior keyboardDismissBehavior = ScrollViewKeyboardDismissBehavior.manual
             this.padding = padding;
         }
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
-            EdgeInsets effectivePadding = padding; // no need to check MediaQuery for now.
+            EdgeInsetsGeometry effectivePadding = padding;
+            if (padding == null) {
+                MediaQueryData mediaQuery = MediaQuery.of(context, nullOk: true);
+                if (mediaQuery != null) {
+                    EdgeInsets mediaQueryHorizontalPadding =
+                        mediaQuery.padding.copyWith(top: 0.0f, bottom: 0.0f);
+                    EdgeInsets mediaQueryVerticalPadding =
+                        mediaQuery.padding.copyWith(left: 0.0f, right: 0.0f);
+                    effectivePadding = scrollDirection == Axis.vertical
+                        ? mediaQueryVerticalPadding
+                        : mediaQueryHorizontalPadding;
+                    sliver = new MediaQuery(
+                        data: mediaQuery.copyWith(
+                            padding: scrollDirection == Axis.vertical
+                                ? mediaQueryHorizontalPadding
+                                : mediaQueryVerticalPadding
+                        ),
+                        child: sliver
+                    );
+                }
+            }
+            
             if (effectivePadding != null) {
                 sliver = new SliverPadding(padding: effectivePadding, sliver: sliver);
             }
 
         public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
             base.debugFillProperties(properties);
-            properties.add(new DiagnosticsProperty<EdgeInsets>("padding", padding,
+            properties.add(new DiagnosticsProperty<EdgeInsetsGeometry>("padding", padding,
                 defaultValue: foundation_.kNullDefaultValue));
         }
     }
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             float? itemExtent = null,
             bool addAutomaticKeepAlives = true,
             bool addRepaintBoundaries = true,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             float? itemExtent = null,
             IndexedWidgetBuilder itemBuilder = null,
             int? itemCount = null,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             float? itemExtent = null,
             IndexedWidgetBuilder itemBuilder = null,
             int? itemCount = null,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             IndexedWidgetBuilder itemBuilder = null,
             IndexedWidgetBuilder separatorBuilder = null,
             int itemCount = 0,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             IndexedWidgetBuilder itemBuilder = null,
             IndexedWidgetBuilder separatorBuilder = null,
             int itemCount = 0,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             float? itemExtent = null,
             SliverChildDelegate childrenDelegate = null,
             float? cacheExtent = null
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             float? itemExtent = null,
             SliverChildDelegate childrenDelegate = null,
             float? cacheExtent = null
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             SliverGridDelegate gridDelegate = null,
             bool addAutomaticKeepAlives = true,
             bool addRepaintBoundaries = true,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             SliverGridDelegate gridDelegate = null,
             IndexedWidgetBuilder itemBuilder = null,
             int? itemCount = null,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             SliverGridDelegate gridDelegate = null,
             IndexedWidgetBuilder itemBuilder = null,
             int? itemCount = null,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             SliverGridDelegate gridDelegate = null,
             SliverChildDelegate childrenDelegate = null,
             float? cacheExtent = null,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             SliverGridDelegate gridDelegate = null,
             SliverChildDelegate childrenDelegate = null,
             float? cacheExtent = null,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             int? crossAxisCount = null,
             float mainAxisSpacing = 0.0f,
             float crossAxisSpacing = 0.0f,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             int? crossAxisCount = null,
             float mainAxisSpacing = 0.0f,
             float crossAxisSpacing = 0.0f,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             float? maxCrossAxisExtent = null,
             float mainAxisSpacing = 0.0f,
             float crossAxisSpacing = 0.0f,
             bool? primary = null,
             ScrollPhysics physics = null,
             bool shrinkWrap = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             float? maxCrossAxisExtent = null,
             float mainAxisSpacing = 0.0f,
             float crossAxisSpacing = 0.0f,

com.unity.uiwidgets/Runtime/widgets/single_child_scroll_view.cs

             Key key = null,
             Axis scrollDirection = Axis.vertical,
             bool reverse = false,
-            EdgeInsets padding = null,
+            EdgeInsetsGeometry padding = null,
             bool? primary = null,
             ScrollPhysics physics = null,
             ScrollController controller = null,
 
         public readonly bool reverse;
 
-        public readonly EdgeInsets padding;
+        public readonly EdgeInsetsGeometry padding;
 
         public readonly ScrollController controller;
 

com.unity.uiwidgets/Runtime/widgets/title.cs

             this.title = title;
         }
 
-        public readonly String title;
+        public readonly string title;
         public readonly Color color;
         public readonly Widget child;
         public override Widget build(BuildContext context) {

engine/src/lib/ui/window/pointer_data.h

     kDown,
     kMove,
     kUp,
+    kMouseDown,
+    kMouseUp,
   };
 
   enum class DeviceKind : int64_t {
-    kInvertedStylus,
+    kInvertedStylus,    
+    kKeyboard,
   };
 
   enum class SignalKind : int64_t {

engine/src/shell/platform/embedder/embedder.cc

       return PointerData::Change::kRemove;
     case kHover:
       return PointerData::Change::kHover;
+    case kMouseDown:
+      return PointerData::Change::kMouseDown;
+    case kMouseUp:
+      return PointerData::Change::kMouseUp;
   }
   return PointerData::Change::kCancel;
 }
       return PointerData::DeviceKind::kMouse;
     case kUIWidgetsPointerDeviceKindTouch:
       return PointerData::DeviceKind::kTouch;
+    case kUIWidgetsPointerDeviceKindKeyboard:
+      return PointerData::DeviceKind::kKeyboard;
   }
   return PointerData::DeviceKind::kMouse;
 }

engine/src/shell/platform/embedder/embedder.h

   kAdd,
   kRemove,
   kHover,
+  kMouseDown,
+  kMouseUp,
+  kUIWidgetsPointerDeviceKindTouch = 0,
-  kUIWidgetsPointerDeviceKindTouch,
+  kUIWidgetsPointerDeviceKindKeyboard = 7,
 } UIWidgetsPointerDeviceKind;
 
 typedef enum {

engine/src/shell/platform/unity/windows/uiwidgets_panel.cc

   }
 }
 
+void UIWidgetsPanel::OnKeyDown(int keyCode, bool isKeyDown) {
+  if (process_events_) {
+    UIWidgetsPointerEvent event = {};
+    event.phase = isKeyDown ? UIWidgetsPointerPhase::kMouseDown : UIWidgetsPointerPhase::kMouseUp;
+    event.device_kind =
+        UIWidgetsPointerDeviceKind::kUIWidgetsPointerDeviceKindKeyboard;
+    event.buttons = keyCode;
+    event.struct_size = sizeof(event);
+    event.timestamp =
+        std::chrono::duration_cast<std::chrono::microseconds>(
+            std::chrono::high_resolution_clock::now().time_since_epoch())
+            .count();
+
+    UIWidgetsEngineSendPointerEvent(engine_, &event, 1);
+  }
+}
+
 void UIWidgetsPanel::OnMouseMove(float x, float y) {
   if (process_events_) {
     SendMouseMove(x, y);
 UIWIDGETS_API(void)
 UIWidgetsPanel_unregisterTexture(UIWidgetsPanel* panel, int texture_id) {
   panel->UnregisterTexture(texture_id);
+}
+
+
+UIWIDGETS_API(void)
+UIWidgetsPanel_onKey(UIWidgetsPanel* panel, int keyCode, bool isKeyDown) {
+  panel->OnKeyDown(keyCode, isKeyDown);
 }
 
 UIWIDGETS_API(void)

engine/src/shell/platform/unity/windows/uiwidgets_panel.h

   void ProcessVSync();
 
   void VSyncCallback(intptr_t baton);
+  
+  void OnKeyDown(int keyCode, bool isKeyDown);
 
   void OnMouseMove(float x, float y);
 

Samples/UIWidgetsSamples_2019_4/Assets/Scene/TextFeildTest.unity

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Samples/UIWidgetsSamples_2019_4/Assets/Scene/ToDoApp.unity.meta

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Samples/UIWidgetsSamples_2019_4/Assets/Script/TextFieldTest.cs

+using Unity.UIWidgets.engine2;
+using Unity.UIWidgets.widgets;
+using ui_ = Unity.UIWidgets.widgets.ui_;
+using Unity.UIWidgets.cupertino;
+
+namespace UIWidgetsSample
+{
+    public class TextFieldTest : UIWidgetsPanel
+    {
+        protected void OnEnable()
+        {
+            base.OnEnable();
+        }
+
+        protected override void main()
+        {
+            ui_.runApp(new MyApp());
+        }
+
+        class MyApp : StatelessWidget
+        {
+            public override Widget build(BuildContext context)
+            {
+                return new CupertinoApp(
+                    home: new HomeScreen() 
+                );
+            }
+        }
+
+        class HomeScreen : StatelessWidget
+        {
+            public override Widget build(BuildContext context)
+            {
+                return new HomeScreen3();
+            }
+        }
+
+        public class HomeScreen3 : StatelessWidget
+        {
+            public override Widget build(BuildContext context)
+            {
+                return new CupertinoPageScaffold(
+                    child: new Center(
+                        child:
+                        new Container(
+                            width: 200,
+                            child: new MyPrefilledText()
+                        )
+                    )
+                );
+            }
+        }
+
+
+        public class MyPrefilledText : StatefulWidget
+        {
+            public override State createState() => new _MyPrefilledTextState();
+        }
+
+        class _MyPrefilledTextState : State<MyPrefilledText>
+        {
+            TextEditingController _textController;
+
+            public override void initState()
+            {
+                base.initState();
+                _textController = new TextEditingController(text: "initial text");
+            }
+
+            public override Widget build(BuildContext context)
+            {
+                return new CupertinoTextField(controller: _textController);
+            }
+        }
+    }
+}