SelectableLabelRenderer.cs

[assembly: ExportRenderer(typeof(SelectableLabel), typeof(SelectableLabelRenderer))]

namespace <project>.Droid.Controls
{
    public class SelectableLabelRenderer : EditorRenderer
    {
        public SelectableLabelRenderer(Context context) : base(context)
        {
        }

        protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
        {
            base.OnElementChanged(e);
            
            if (Control == null) 
                return;
            
            Control.Background = null;
            Control.SetPadding(0, 0, 0, 0);
            Control.ShowSoftInputOnFocus = false;
            Control.SetTextIsSelectable(true);
            Control.CustomSelectionActionModeCallback = new CustomSelectionActionModeCallback();
            Control.CustomInsertionActionModeCallback = new CustomInsertionActionModeCallback();
        }
        
        private class CustomInsertionActionModeCallback : Java.Lang.Object, ActionMode.ICallback
        {
            public bool OnCreateActionMode(ActionMode mode, IMenu menu) => false;
            
            public bool OnActionItemClicked(ActionMode m, IMenuItem i) => false;
            
            public bool OnPrepareActionMode(ActionMode mode, IMenu menu) => true;
            
            public void OnDestroyActionMode(ActionMode mode) { }
        }
        
        private class CustomSelectionActionModeCallback : Java.Lang.Object, ActionMode.ICallback
        {
            private const int CopyId = Android.Resource.Id.Copy;
            
            public bool OnActionItemClicked(ActionMode m, IMenuItem i) => false;
            
            public bool OnCreateActionMode(ActionMode mode, IMenu menu) => true;
            
            public void OnDestroyActionMode(ActionMode mode) { }
            
            public bool OnPrepareActionMode(ActionMode mode, IMenu menu)
            {
                try
                {
                    var copyItem = menu.FindItem(CopyId);
                    var title = copyItem.TitleFormatted;
                    menu.Clear();
                    menu.Add(0, CopyId, 0, title);
                }
                catch
                {
                    // ignored
                }
                
                return true;
            }
        }
    }
}