wabbajack/Wabbajack/Views/Common/DetailImageView.xaml.cs

using ReactiveUI;
using ReactiveUI.Fody.Helpers;
using System;
using System.Linq;
using System.Reactive;
using System.Reactive.Disposables;
using System.Reactive.Linq;
using System.Windows;
using System.Windows.Media;
using Wabbajack.Lib;

namespace Wabbajack
{
    /// <summary>
    /// Interaction logic for DetailImageView.xaml
    /// </summary>
    public partial class DetailImageView : UserControlRx<ViewModel>
    {
        public ImageSource Image
        {
            get => (ImageSource)GetValue(ImageProperty);
            set => SetValue(ImageProperty, value);
        }
        public static readonly DependencyProperty ImageProperty = DependencyProperty.Register(nameof(Image), typeof(ImageSource), typeof(DetailImageView),
             new FrameworkPropertyMetadata(default(ImageSource), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, WireNotifyPropertyChanged));

        public ImageSource Badge
        {
            get => (ImageSource)GetValue(BadgeProperty);
            set => SetValue(BadgeProperty, value);
        }
        public static readonly DependencyProperty BadgeProperty = DependencyProperty.Register(nameof(Badge), typeof(ImageSource), typeof(DetailImageView),
             new FrameworkPropertyMetadata(default(ImageSource), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, WireNotifyPropertyChanged));

        public string Title
        {
            get => (string)GetValue(TitleProperty);
            set => SetValue(TitleProperty, value);
        }
        public static readonly DependencyProperty TitleProperty = DependencyProperty.Register(nameof(Title), typeof(string), typeof(DetailImageView),
             new FrameworkPropertyMetadata(default(string), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, WireNotifyPropertyChanged));

        public string Author
        {
            get => (string)GetValue(AuthorProperty);
            set => SetValue(AuthorProperty, value);
        }
        public static readonly DependencyProperty AuthorProperty = DependencyProperty.Register(nameof(Author), typeof(string), typeof(DetailImageView),
             new FrameworkPropertyMetadata(default(string), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, WireNotifyPropertyChanged));

        public string Description
        {
            get => (string)GetValue(DescriptionProperty);
            set => SetValue(DescriptionProperty, value);
        }
        public static readonly DependencyProperty DescriptionProperty = DependencyProperty.Register(nameof(Description), typeof(string), typeof(DetailImageView),
             new FrameworkPropertyMetadata(default(string), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, WireNotifyPropertyChanged));

        public DetailImageView()
        {
            InitializeComponent();

            this.WhenActivated(dispose =>
            {
                // Update textboxes
                var authorVisible = this.WhenAny(x => x.Author)
                    .Select(x => string.IsNullOrWhiteSpace(x) ? Visibility.Collapsed : Visibility.Visible)
                    .Replay(1)
                    .RefCount();
                authorVisible
                    .BindToStrict(this, x => x.AuthorTextBlock.Visibility)
                    .DisposeWith(dispose);
                authorVisible
                    .BindToStrict(this, x => x.AuthorTextShadow.Visibility)
                    .DisposeWith(dispose);
                this.WhenAny(x => x.Author)
                    .BindToStrict(this, x => x.AuthorTextRun.Text)
                    .DisposeWith(dispose);
                this.WhenAny(x => x.Author)
                    .BindToStrict(this, x => x.AuthorShadowTextRun.Text)
                    .DisposeWith(dispose);

                var descVisible = this.WhenAny(x => x.Description)
                    .Select(x => string.IsNullOrWhiteSpace(x) ? Visibility.Collapsed : Visibility.Visible)
                    .Replay(1)
                    .RefCount();
                descVisible
                    .BindToStrict(this, x => x.DescriptionTextBlock.Visibility)
                    .DisposeWith(dispose);
                descVisible
                    .BindToStrict(this, x => x.DescriptionTextShadow.Visibility)
                    .DisposeWith(dispose);
                this.WhenAny(x => x.Description)
                    .BindToStrict(this, x => x.DescriptionTextBlock.Text)
                    .DisposeWith(dispose);
                this.WhenAny(x => x.Description)
                    .BindToStrict(this, x => x.DescriptionTextShadow.Text)
                    .DisposeWith(dispose);

                var titleVisible = this.WhenAny(x => x.Title)
                    .Select(x => string.IsNullOrWhiteSpace(x) ? Visibility.Collapsed : Visibility.Visible)
                    .Replay(1)
                    .RefCount();
                titleVisible
                    .BindToStrict(this, x => x.TitleTextBlock.Visibility)
                    .DisposeWith(dispose);
                titleVisible
                    .BindToStrict(this, x => x.TitleTextShadow.Visibility)
                    .DisposeWith(dispose);
                this.WhenAny(x => x.Title)
                    .BindToStrict(this, x => x.TitleTextBlock.Text)
                    .DisposeWith(dispose);
                this.WhenAny(x => x.Title)
                    .BindToStrict(this, x => x.TitleTextShadow.Text)
                    .DisposeWith(dispose);

                // Update other items
                this.WhenAny(x => x.Badge)
                    .BindToStrict(this, x => x.BadgeImage.Source)
                    .DisposeWith(dispose);
                this.WhenAny(x => x.Image)
                    .BindToStrict(this, x => x.ModlistImage.Source)
                    .DisposeWith(dispose);
                this.WhenAny(x => x.Image)
                    .Select(img => img == null ? Visibility.Hidden : Visibility.Visible)
                    .BindToStrict(this, x => x.Visibility)
                    .DisposeWith(dispose);
            });
        }
    }
}