Add SelectableLabel Custom Renderer to allow copy of note text (#1564)

* Add SelectableLabel Custom Renderer to allow copy of note text
- Remove SelectableLabelEffect

* Remove editor changes from text custom field

src/iOS.Core/Renderers/SelectableLabelRenderer.cs

@@ -0,0 +1,67 @@
+using System;
+using System.ComponentModel;
+using Bit.App.Controls;
+using Bit.iOS.Core.Renderers;
+using UIKit;
+using Xamarin.Forms;
+using Xamarin.Forms.Platform.iOS;
+
+[assembly: ExportRenderer(typeof(SelectableLabel), typeof(SelectableLabelRenderer))]
+namespace Bit.iOS.Core.Renderers
+{
+    public class SelectableLabelRenderer : ViewRenderer<Label, UITextView>
+    {
+        UITextView uiTextView;
+
+        protected override void OnElementChanged(ElementChangedEventArgs<Label> e)
+        {
+            base.OnElementChanged(e);
+
+            if (Control == null)
+            {
+                uiTextView = new UITextView();
+            }
+
+            uiTextView.Selectable = true;
+            uiTextView.Editable = false;
+            uiTextView.ScrollEnabled = false;
+            uiTextView.TextContainerInset = UIEdgeInsets.Zero;
+            uiTextView.TextContainer.LineFragmentPadding = 0;
+            uiTextView.BackgroundColor = UIColor.Clear;
+
+            uiTextView.Text = Element.Text;
+            uiTextView.TextColor = Element.TextColor.ToUIColor();
+            switch (Element.FontAttributes)
+            {
+                case FontAttributes.None:
+                    uiTextView.Font = UIFont.SystemFontOfSize(new nfloat(Element.FontSize));
+                    break;
+                case FontAttributes.Bold:
+                    uiTextView.Font = UIFont.BoldSystemFontOfSize(new nfloat(Element.FontSize));
+                    break;
+                case FontAttributes.Italic:
+                    uiTextView.Font = UIFont.ItalicSystemFontOfSize(new nfloat(Element.FontSize));
+                    break;
+                default:
+                    uiTextView.Font = UIFont.BoldSystemFontOfSize(new nfloat(Element.FontSize));
+                    break;
+            }
+
+            SetNativeControl(uiTextView);
+        }
+
+        protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+        {
+            base.OnElementPropertyChanged(sender, e);
+
+            if (e.PropertyName == Label.TextProperty.PropertyName)
+            {
+                if (Control != null && Element != null && !string.IsNullOrWhiteSpace(Element.Text))
+                {
+                    uiTextView.Text = Element.Text;
+                }
+            }
+        }
+
+    }
+}

src/iOS.Core/iOS.Core.csproj

@@ -188,6 +188,7 @@
     <Compile Include="Views\StepperTableViewCell.cs" />
     <Compile Include="Views\SwitchTableViewCell.cs" />
     <Compile Include="Views\Toast.cs" />
+    <Compile Include="Renderers\SelectableLabelRenderer.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\App\App.csproj">