[Enhancement] Entry: Read-only Entry and Editor

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1678.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+using Xamarin.Forms.CustomAttributes;
+using Xamarin.Forms.Internals;
+
+namespace Xamarin.Forms.Controls.Issues
+{
+	[Preserve(AllMembers = true)]
+	[Issue(IssueTracker.Github, 1678, "[Enhancement] Entry: Read-only entry", PlatformAffected.All)]
+	public class Issue1678 
+		: TestContentPage
+	{
+		protected override void Init()
+		{
+			var entryText = "Entry Lorem Ipsum";
+			var editorText = "Editor Lorem Ipsum";
+
+			var entryDefaults = new Entry { Text = entryText };
+			var editorDefaults = new Editor { Text = editorText };
+			var entryReadOnly = new Entry { Text = entryText, IsReadOnly = true };
+			var editorReadOnly = new Editor { Text = editorText, IsReadOnly = true };
+			var entryToggleable = new Entry { Text = entryText };
+			var editorToggleable = new Editor { Text = editorText };
+
+			var toggle = new Switch { IsToggled = false };
+
+			var stackLayout = new StackLayout();
+			stackLayout.Children.Add(new Label { Text = "Defaults" });
+			stackLayout.Children.Add(entryDefaults);
+			stackLayout.Children.Add(editorDefaults);
+			stackLayout.Children.Add(new Label { Text = "Read Only" });
+			stackLayout.Children.Add(entryReadOnly);
+			stackLayout.Children.Add(editorReadOnly);
+			stackLayout.Children.Add(new Label { Text = "Toggleable is read only" });
+			stackLayout.Children.Add(entryToggleable);
+			stackLayout.Children.Add(editorToggleable);
+			stackLayout.Children.Add(toggle);
+
+			toggle.Toggled += (_, b) =>
+			{
+				entryToggleable.IsReadOnly = b.Value;
+				editorToggleable.IsReadOnly = b.Value;
+			};
+
+			stackLayout.Padding = new Thickness(0, 20, 0, 0);
+			Content = stackLayout;
+		}
+	}
+}

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Xamarin.Forms.Controls.Issues.Shared.projitems

@@ -35,6 +35,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Issue3788.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue1724.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue3524.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Issue1678.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue2004.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue3333.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue2338.cs" />

Xamarin.Forms.Controls/CoreGalleryPages/EditorCoreGalleryPage.cs

@@ -40,6 +40,8 @@ protected override void Build(StackLayout stackLayout)
 
 			var maxLengthContainer = new ViewContainer<Editor>(Test.InputView.MaxLength, new Editor { MaxLength = 3 });
 
+			var readOnlyContainer = new ViewContainer<Editor>(Test.Editor.IsReadOnly, new Editor { Text = "This is read-only Editor", IsReadOnly = true });
+
 			Add(completedContainer);
 			Add(textContainer);
 			Add(textChangedContainer);
@@ -54,6 +56,7 @@ protected override void Build(StackLayout stackLayout)
 			Add(textColorDisabledContainer);
 			Add(keyboardContainer);
 			Add(maxLengthContainer);
+			Add(readOnlyContainer);
 		}
 	}
 }

Xamarin.Forms.Controls/CoreGalleryPages/EntryCoreGalleryPage.cs

@@ -66,6 +66,7 @@ protected override void Build (StackLayout stackLayout)
 
 			var maxLengthContainer = new ViewContainer<Entry>(Test.InputView.MaxLength,	new Entry { MaxLength = 3 });
 
+			var readOnlyContainer = new ViewContainer<Entry>(Test.Entry.IsReadOnly, new Entry { Text = "This is read-only Entry", IsReadOnly = true });
 			var isPasswordInputScopeContainer = new ViewContainer<Entry>(Test.Entry.IsPasswordNumeric,	new Entry { Keyboard = Keyboard.Numeric });
 			var switchPasswordButton = new Button
 			{
@@ -110,6 +111,7 @@ protected override void Build (StackLayout stackLayout)
 			Add (placeholderColorDisabledContainer);
 			Add (passwordColorContainer);
 			Add (maxLengthContainer);
+			Add (readOnlyContainer);
 			Add (isPasswordInputScopeContainer);
 		}
 	}

Xamarin.Forms.Core.UnitTests/EditorTests.cs

@@ -30,5 +30,19 @@ public void EditorTextChangedEventArgs (string initialText, string finalText)
 			Assert.AreEqual (initialText, oldText);
 			Assert.AreEqual (finalText, newText);
 		}
+
+		[TestCase(true)]
+		public void IsReadOnlyTest(bool isReadOnly)
+		{
+			Editor editor = new Editor();
+			editor.SetValue(InputView.IsReadOnlyProperty, isReadOnly);
+			Assert.AreEqual(isReadOnly, editor.IsReadOnly);
+		}
+		[Test]
+		public void IsReadOnlyDefaultValueTest()
+		{
+			Editor editor = new Editor();
+			Assert.AreEqual(editor.IsReadOnly, false);
+		}
 	}
 }

Xamarin.Forms.Core.UnitTests/EntryUnitTests.cs

@@ -154,5 +154,20 @@ public void ReturnTypeCommandNullTestIsEnabled(bool isEnabled)
 
 			Assert.True(result == isEnabled ? true : false);
 		}
+
+		[TestCase(true)]
+		public void IsReadOnlyTest(bool isReadOnly)
+		{
+			Entry entry = new Entry();
+			entry.SetValue(InputView.IsReadOnlyProperty, isReadOnly);
+			Assert.AreEqual(isReadOnly, entry.IsReadOnly);
+		}
+
+		[Test]
+		public void IsReadOnlyDefaultValueTest()
+		{
+			Entry entry = new Entry();
+			Assert.AreEqual(entry.IsReadOnly, false);
+		}
 	}
 }

Xamarin.Forms.Core.UnitTests/NotifiedPropertiesTests.cs

@@ -151,7 +151,9 @@ public override INotifyPropertyChanged CreateView ()
 			new PropertyTestCase<TapGestureRecognizer, int> ("NumberOfTapsRequired", t => t.NumberOfTapsRequired, (t, o) => t.NumberOfTapsRequired = o, () => 1, 3),
 			new PropertyTestCase<TapGestureRecognizer, object> ("CommandParameter", t => t.CommandParameter, (t, o) => t.CommandParameter = o, () => null, "Test"),
 			new PropertyTestCase<TapGestureRecognizer, ICommand> ("Command", t => t.Command, (t, o) => t.Command = o, () => null, new Command(()=>{})),
-			new PropertyTestCase<MasterDetailPage, bool> ("IsGestureEnabled", md => md.IsGestureEnabled, (md, v) => md.IsGestureEnabled = v, () => true, false)
+			new PropertyTestCase<MasterDetailPage, bool> ("IsGestureEnabled", md => md.IsGestureEnabled, (md, v) => md.IsGestureEnabled = v, () => true, false),
+			new PropertyTestCase<Entry, bool> ("IsReadOnly", v => v.IsReadOnly, (v, o) => v.IsReadOnly = o, () => false, true),
+			new PropertyTestCase<Editor, bool> ("IsReadOnly", v => v.IsReadOnly, (v, o) => v.IsReadOnly = o, () => false, true)
 		};
 #pragma warning restore 0414
 

Xamarin.Forms.Core/InputView.cs

@@ -8,6 +8,8 @@ public class InputView : View
 
 		public static readonly BindableProperty MaxLengthProperty = BindableProperty.Create(nameof(MaxLength), typeof(int), typeof(int), int.MaxValue);
 
+		public static readonly BindableProperty IsReadOnlyProperty = BindableProperty.Create(nameof(IsReadOnly), typeof(bool), typeof(InputView), false);
+
 		public int MaxLength
 		{
 			get { return (int)GetValue(MaxLengthProperty); }
@@ -29,5 +31,11 @@ public bool IsSpellCheckEnabled
 			get { return (bool)GetValue(IsSpellCheckEnabledProperty); }
 			set { SetValue(IsSpellCheckEnabledProperty, value); }
 		}
+
+		public bool IsReadOnly
+		{
+			get { return (bool)GetValue(IsReadOnlyProperty); }
+			set { SetValue(IsReadOnlyProperty, value); }
+		}
 	}
 }

Xamarin.Forms.CustomAttributes/TestAttributes.cs

@@ -507,6 +507,8 @@ public enum Editor
 			FontAttributes,
 			FontFamily,
 			FontSize,
+			MaxLength,
+			IsReadOnly
 		}
 
 		public enum Entry
@@ -530,6 +532,8 @@ public enum Entry
 			TextDisabledColor,
 			PlaceholderDisabledColor,
 			PasswordColor,
+			MaxLength,
+			IsReadOnly,
 			IsPasswordNumeric
 		}
 

Xamarin.Forms.Platform.Android/Renderers/EditorRenderer.cs

@@ -90,6 +90,7 @@ protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
 			UpdateMaxLength();
 			UpdatePlaceholderColor();
 			UpdatePlaceholderText();
+			UpdateIsReadOnly();
 		}
 
 		protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
@@ -116,6 +117,8 @@ protected override void OnElementPropertyChanged(object sender, PropertyChangedE
 				UpdatePlaceholderText();
 			else if (e.PropertyName == Editor.PlaceholderColorProperty.PropertyName)
 				UpdatePlaceholderColor();
+			else if (e.PropertyName == InputView.IsReadOnlyProperty.PropertyName)
+				UpdateIsReadOnly();
 
 			base.OnElementPropertyChanged(sender, e);
 		}
@@ -247,5 +250,14 @@ void UpdateMaxLength()
 			if (currentControlText.Length > Element.MaxLength)
 				Control.Text = currentControlText.Substring(0, Element.MaxLength);
 		}
+
+		void UpdateIsReadOnly()
+		{
+			bool isReadOnly = !Element.IsReadOnly;
+
+			Control.FocusableInTouchMode = isReadOnly;
+			Control.Focusable = isReadOnly;
+			Control.SetCursorVisible(isReadOnly);
+		}
 	}
 }

Xamarin.Forms.Platform.Android/Renderers/EntryRenderer.cs

@@ -109,6 +109,7 @@ protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
 			UpdateMaxLength();
 			UpdateImeOptions();
 			UpdateReturnType();
+			UpdateIsReadOnly();
 
 			if (_cursorPositionChangePending || _selectionLengthChangePending)
 				UpdateCursorSelection();
@@ -183,6 +184,8 @@ protected override void OnElementPropertyChanged(object sender, PropertyChangedE
 				UpdateCursorSelection();
 			else if (e.PropertyName == Entry.CursorPositionProperty.PropertyName)
 				UpdateCursorSelection();
+			else if (e.PropertyName == InputView.IsReadOnlyProperty.PropertyName)
+				UpdateIsReadOnly();
 
 			base.OnElementPropertyChanged(sender, e);
 		}
@@ -332,7 +335,7 @@ void UpdateCursorSelection()
 			if (_nativeSelectionIsUpdating || Control == null || Element == null)
 				return;
 
-			if (Control.RequestFocus())
+			if (!Element.IsReadOnly && Control.RequestFocus())
 			{
 				try
 				{
@@ -414,5 +417,14 @@ void SetSelectionLengthFromRenderer(int selectionLength)
 				_nativeSelectionIsUpdating = false;
 			}
 		}
+
+		void UpdateIsReadOnly()
+		{
+			bool isReadOnly = !Element.IsReadOnly;
+
+			Control.FocusableInTouchMode = isReadOnly;
+			Control.Focusable = isReadOnly;
+			Control.SetCursorVisible(isReadOnly);
+		}
 	}
-}
+}

Xamarin.Forms.Platform.MacOS/Renderers/EditorRenderer.cs

@@ -42,6 +42,7 @@ protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
 			UpdateTextColor();
 			UpdateEditable();
 			UpdateMaxLength();
+			UpdateIsReadOnly();
 		}
 
 		protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
@@ -62,6 +63,8 @@ protected override void OnElementPropertyChanged(object sender, PropertyChangedE
 				UpdateFont();
 			else if (e.PropertyName == InputView.MaxLengthProperty.PropertyName)
 				UpdateMaxLength();
+			else if (e.PropertyName == Xamarin.Forms.InputView.IsReadOnlyProperty.PropertyName)
+				UpdateIsReadOnly();
 		}
 
 		protected override void SetBackgroundColor(Color color)
@@ -148,5 +151,12 @@ void UpdateMaxLength()
 			if (currentControlText.Length > Element?.MaxLength)
 				Control.StringValue = currentControlText.Substring(0, Element.MaxLength);
 		}
+
+		void UpdateIsReadOnly()
+		{
+			Control.Editable = !Element.IsReadOnly;
+			if (Element.IsReadOnly && Control.Window?.FirstResponder == Control.CurrentEditor)
+				Control.Window?.MakeFirstResponder(null);
+		}
 	}
 }

Xamarin.Forms.Platform.MacOS/Renderers/EntryRenderer.cs

@@ -132,6 +132,8 @@ protected override void OnElementPropertyChanged(object sender, PropertyChangedE
 				UpdateAlignment();
 			else if (e.PropertyName == InputView.MaxLengthProperty.PropertyName)
 				UpdateMaxLength();
+			else if (e.PropertyName == Xamarin.Forms.InputView.IsReadOnlyProperty.PropertyName)
+				UpdateIsReadOnly();
 
 			base.OnElementPropertyChanged(sender, e);
 		}
@@ -201,7 +203,8 @@ void UpdateControl()
 			UpdateFont();
 			UpdateAlignment();
 			UpdateMaxLength();
-		}
+			UpdateIsReadOnly();
+        }
 
 		void TextFieldFocusChanged(object sender, BoolEventArgs e)
 		{
@@ -289,5 +292,13 @@ void UpdateMaxLength()
 			if (currentControlText.Length > Element?.MaxLength)
 				Control.StringValue = currentControlText.Substring(0, Element.MaxLength);
 		}
+
+
+		void UpdateIsReadOnly()
+		{
+			Control.Editable = !Element.IsReadOnly;
+			if (Element.IsReadOnly && Control.Window?.FirstResponder == Control.CurrentEditor)
+				Control.Window?.MakeFirstResponder(null);
+		}
 	}
 }

Xamarin.Forms.Platform.Tizen/Renderers/EditorRenderer.cs

@@ -16,6 +16,7 @@ public EditorRenderer()
 			RegisterPropertyHandler(InputView.IsSpellCheckEnabledProperty, UpdateIsSpellCheckEnabled);
 			RegisterPropertyHandler(Editor.PlaceholderProperty, UpdatePlaceholder);
 			RegisterPropertyHandler(Editor.PlaceholderColorProperty, UpdatePlaceholderColor);
+			RegisterPropertyHandler(InputView.IsReadOnlyProperty, UpdateIsReadOnly);
 		}
 
 		protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
@@ -153,5 +154,10 @@ string MaxLengthFilter(ElmSharp.Entry entry, string s)
 
 			return null;
 		}
+
+		void UpdateIsReadOnly()
+		{
+			Control.IsEditable = !Element.IsReadOnly;
+		}
 	}
 }

Xamarin.Forms.Platform.Tizen/Renderers/EntryRenderer.cs

@@ -23,6 +23,7 @@ public EntryRenderer()
 			RegisterPropertyHandler(Entry.IsTextPredictionEnabledProperty, UpdateIsSpellCheckEnabled);
 			RegisterPropertyHandler(Specific.FontWeightProperty, UpdateFontWeight);
 			RegisterPropertyHandler(Entry.SelectionLengthProperty, UpdateSelectionLength);
+			RegisterPropertyHandler(InputView.IsReadOnlyProperty, UpdateIsReadOnly);
 		}
 
 		protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
@@ -198,5 +199,10 @@ int GetCursorPosition()
 
 			return Element.Text.IndexOf(selection, Math.Max(Control.CursorPosition - selection.Length, 0));
 		}
+
+		void UpdateIsReadOnly()
+		{
+			Control.IsEditable = !Element.IsReadOnly;
+		}
 	}
 }

Xamarin.Forms.Platform.UAP/EditorRenderer.cs

@@ -62,6 +62,7 @@ protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
 				UpdateDetectReadingOrderFromContent();
 				UpdatePlaceholderText();
 				UpdatePlaceholderColor();
+				UpdateIsReadOnly();
 			}
 
 			base.OnElementChanged(e);
@@ -127,6 +128,8 @@ protected override void OnElementPropertyChanged(object sender, PropertyChangedE
 				UpdatePlaceholderText();
 			else if (e.PropertyName == Editor.PlaceholderColorProperty.PropertyName)
 				UpdatePlaceholderColor();
+			else if (e.PropertyName == InputView.IsReadOnlyProperty.PropertyName)
+				UpdateIsReadOnly();
 		}
 
 		void OnLostFocus(object sender, RoutedEventArgs e)
@@ -357,5 +360,10 @@ void UpdateDetectReadingOrderFromContent()
 				}
 			}
 		}
+
+		void UpdateIsReadOnly()
+		{
+			Control.IsReadOnly = Element.IsReadOnly;
+		}
 	}
 }