osukey/osu.Game/Overlays/BeatmapListing/BeatmapListingSearchSection.cs

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osu.Game.Online.API.Requests;
using osuTK;
using osu.Framework.Bindables;
using osu.Game.Beatmaps.Drawables;
using osu.Game.Beatmaps;
using osu.Game.Graphics.Containers;
using osu.Game.Graphics.UserInterface;
using osuTK.Graphics;

namespace osu.Game.Overlays.BeatmapListing
{
    public class BeatmapListingSearchSection : CompositeDrawable
    {
        public Bindable<BeatmapSearchParameters> SearchParameters = new Bindable<BeatmapSearchParameters>();

        public BeatmapSetInfo BeatmapSet
        {
            set
            {
                if (value == null || string.IsNullOrEmpty(value.OnlineInfo.Covers.Cover))
                {
                    beatmapCover.FadeOut(600, Easing.OutQuint);
                    return;
                }

                beatmapCover.BeatmapSet = value;
                beatmapCover.FadeTo(0.1f, 200, Easing.OutQuint);
            }
        }

        private readonly BeatmapSearchTextBox textBox;
        private readonly BeatmapSearchRulesetFilterRow modeFilter;
        private readonly BeatmapSearchFilterRow<BeatmapSearchCategory> categoryFilter;
        private readonly BeatmapSearchSmallFilterRow<BeatmapSearchGenre> genreFilter;
        private readonly BeatmapSearchSmallFilterRow<BeatmapSearchLanguage> languageFilter;

        private readonly Box background;
        private readonly UpdateableBeatmapSetCover beatmapCover;

        public BeatmapListingSearchSection()
        {
            AutoSizeAxes = Axes.Y;
            RelativeSizeAxes = Axes.X;
            AddRangeInternal(new Drawable[]
            {
                background = new Box
                {
                    RelativeSizeAxes = Axes.Both
                },
                new Container
                {
                    RelativeSizeAxes = Axes.Both,
                    Masking = true,
                    Child = beatmapCover = new UpdateableBeatmapSetCover
                    {
                        RelativeSizeAxes = Axes.Both,
                        Alpha = 0,
                    }
                },
                new Container
                {
                    AutoSizeAxes = Axes.Y,
                    RelativeSizeAxes = Axes.X,
                    Padding = new MarginPadding
                    {
                        Vertical = 20,
                        Horizontal = 40,
                    },
                    Child = new FillFlowContainer
                    {
                        AutoSizeAxes = Axes.Y,
                        RelativeSizeAxes = Axes.X,
                        Direction = FillDirection.Vertical,
                        Spacing = new Vector2(0, 20),
                        Children = new Drawable[]
                        {
                            textBox = new BeatmapSearchTextBox
                            {
                                RelativeSizeAxes = Axes.X,
                            },
                            new ReverseChildIDFillFlowContainer<Drawable>
                            {
                                AutoSizeAxes = Axes.Y,
                                RelativeSizeAxes = Axes.X,
                                Direction = FillDirection.Vertical,
                                Padding = new MarginPadding { Horizontal = 10 },
                                Children = new Drawable[]
                                {
                                    modeFilter = new BeatmapSearchRulesetFilterRow(),
                                    categoryFilter = new BeatmapSearchFilterRow<BeatmapSearchCategory>(@"Categories"),
                                    genreFilter = new BeatmapSearchSmallFilterRow<BeatmapSearchGenre>(@"Genre"),
                                    languageFilter = new BeatmapSearchSmallFilterRow<BeatmapSearchLanguage>(@"Language"),
                                }
                            }
                        }
                    }
                }
            });

            categoryFilter.Current.Value = BeatmapSearchCategory.Leaderboard;

            textBox.Current.BindValueChanged(_ => changeSearchParameters());
            modeFilter.Current.BindValueChanged(_ => changeSearchParameters());
            categoryFilter.Current.BindValueChanged(_ => changeSearchParameters());
            genreFilter.Current.BindValueChanged(_ => changeSearchParameters());
            languageFilter.Current.BindValueChanged(_ => changeSearchParameters(), true);
        }

        [BackgroundDependencyLoader]
        private void load(OverlayColourProvider colourProvider)
        {
            background.Colour = colourProvider.Dark6;
        }

        public void SetTag(string tag) => textBox.Current.Value = tag;

        public void SetGenre(BeatmapSearchGenre genre) => genreFilter.Current.Value = genre;

        public void SetLanguage(BeatmapSearchLanguage language) => languageFilter.Current.Value = language;

        private void changeSearchParameters()
        {
            SearchParameters.Value = new BeatmapSearchParameters(
                textBox.Current.Value,
                modeFilter.Current.Value,
                categoryFilter.Current.Value,
                genreFilter.Current.Value,
                languageFilter.Current.Value);
        }

        private class BeatmapSearchTextBox : SearchTextBox
        {
            protected override Color4 SelectionColour => Color4.Gray;

            public BeatmapSearchTextBox()
            {
                PlaceholderText = @"type in keywords...";
            }
        }
    }
}