ilyalehchylin/educats-xamarin

using EduCATS.Fonts;
using EduCATS.Helpers.Forms.Styles;
using EduCATS.Pages.Testing.Passing.Models;
using EduCATS.Themes;
using Xamarin.Forms;

namespace EduCATS.Pages.Testing.Passing.Views.ViewCells
{
    public class TestMultipleAnswerViewCell : ViewCell
    {
        const double _boxSize = 40;
        const float _frameRadius = 10;

        static Thickness _frameMargin = new Thickness(10);

        TestPassingAnswerModel _answerModel;
        readonly Label _answer;
        readonly BoxView _boxView;

        public TestMultipleAnswerViewCell()
        {
            _boxView = new BoxView {
                HeightRequest = _boxSize,
                WidthRequest = _boxSize,
                Color = Color.FromHex(Theme.Current.AppBackgroundColor),
                VerticalOptions = LayoutOptions.CenterAndExpand
            };

            _answer = new Label {
                TextColor = Color.FromHex(Theme.Current.TestPassingAnswerColor),
                VerticalOptions = LayoutOptions.CenterAndExpand,
                Style = AppStyles.GetLabelStyle()
            };

            _answer.SetBinding(Label.TextProperty, "Content");

            View = new Frame {
                BackgroundColor = Color.FromHex(Theme.Current.BaseBlockColor),
                HasShadow = false,
                Margin = _frameMargin,
                CornerRadius = _frameRadius,
                Content = new StackLayout {
                    Orientation = StackOrientation.Horizontal,
                    Children = {
                        _boxView,
                        _answer
                    }
                }
            };
        }

        protected override void OnBindingContextChanged()
        {
            base.OnBindingContextChanged();

            _answerModel = (TestPassingAnswerModel)BindingContext;

            if (_answerModel == null || !_answerModel.IsSelected) {
                return;
            }

            _boxView.Color = Color.FromHex(Theme.Current.TestPassingSelectionColor);
            _answer.TextColor = Color.FromHex(Theme.Current.TestPassingSelectionColor);
            _answer.FontAttributes = FontAttributes.Bold;
            _answer.FontFamily = FontsController.GetCurrentFont(true);
        }
    }
}