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283 lines
11 KiB
C#
283 lines
11 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Reflection;
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using JetBrains.Annotations;
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using osu.Framework.Bindables;
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using osu.Framework.Extensions.ObjectExtensions;
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using osu.Framework.Extensions.TypeExtensions;
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using osu.Framework.Graphics;
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using osu.Framework.Localisation;
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using osu.Game.Graphics.UserInterface;
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using osu.Game.Overlays.Settings;
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namespace osu.Game.Configuration
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{
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/// <summary>
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/// An attribute to mark a bindable as being exposed to the user via settings controls.
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/// Can be used in conjunction with <see cref="SettingSourceExtensions.CreateSettingsControls"/> to automatically create UI controls.
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/// </summary>
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/// <remarks>
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/// All controls with <see cref="OrderPosition"/> set will be placed first in ascending order.
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/// All controls with no <see cref="OrderPosition"/> will come afterward in default order.
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/// </remarks>
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[MeansImplicitUse]
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[AttributeUsage(AttributeTargets.Property)]
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public class SettingSourceAttribute : Attribute, IComparable<SettingSourceAttribute>
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{
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public LocalisableString Label { get; }
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public LocalisableString Description { get; }
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public int? OrderPosition { get; }
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/// <summary>
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/// The type of the settings control which handles this setting source.
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/// </summary>
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/// <remarks>
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/// Must be a type deriving <see cref="SettingsItem{T}"/> with a public parameterless constructor.
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/// </remarks>
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public Type? SettingControlType { get; set; }
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public SettingSourceAttribute(Type declaringType, string label, string? description = null)
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{
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Label = getLocalisableStringFromMember(label) ?? string.Empty;
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Description = getLocalisableStringFromMember(description) ?? string.Empty;
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LocalisableString? getLocalisableStringFromMember(string? member)
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{
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if (member == null)
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return null;
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var property = declaringType.GetMember(member, BindingFlags.Static | BindingFlags.Public).FirstOrDefault();
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if (property == null)
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return null;
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switch (property)
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{
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case FieldInfo f:
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return (LocalisableString)f.GetValue(null).AsNonNull();
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case PropertyInfo p:
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return (LocalisableString)p.GetValue(null).AsNonNull();
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default:
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throw new InvalidOperationException($"Member \"{member}\" was not found in type {declaringType} (must be a static field or property)");
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}
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}
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}
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public SettingSourceAttribute(string? label, string? description = null)
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{
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Label = label ?? string.Empty;
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Description = description ?? string.Empty;
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}
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public SettingSourceAttribute(Type declaringType, string label, string description, int orderPosition)
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: this(declaringType, label, description)
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{
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OrderPosition = orderPosition;
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}
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public SettingSourceAttribute(string label, string description, int orderPosition)
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: this(label, description)
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{
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OrderPosition = orderPosition;
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}
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public int CompareTo(SettingSourceAttribute? other)
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{
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if (OrderPosition == other?.OrderPosition)
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return 0;
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// unordered items come last (are greater than any ordered items).
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if (OrderPosition == null)
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return 1;
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if (other?.OrderPosition == null)
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return -1;
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// ordered items are sorted by the order value.
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return OrderPosition.Value.CompareTo(other.OrderPosition);
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}
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}
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public static partial class SettingSourceExtensions
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{
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public static IEnumerable<Drawable> CreateSettingsControls(this object obj)
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{
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foreach (var (attr, property) in obj.GetOrderedSettingsSourceProperties())
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{
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object value = property.GetValue(obj)!;
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if (attr.SettingControlType != null)
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{
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var controlType = attr.SettingControlType;
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if (controlType.EnumerateBaseTypes().All(t => !t.IsGenericType || t.GetGenericTypeDefinition() != typeof(SettingsItem<>)))
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throw new InvalidOperationException($"{nameof(SettingSourceAttribute)} had an unsupported custom control type ({controlType.ReadableName()})");
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var control = (Drawable)Activator.CreateInstance(controlType)!;
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controlType.GetProperty(nameof(SettingsItem<object>.SettingSourceObject))?.SetValue(control, obj);
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controlType.GetProperty(nameof(SettingsItem<object>.LabelText))?.SetValue(control, attr.Label);
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controlType.GetProperty(nameof(SettingsItem<object>.TooltipText))?.SetValue(control, attr.Description);
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controlType.GetProperty(nameof(SettingsItem<object>.Current))?.SetValue(control, value);
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yield return control;
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continue;
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}
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switch (value)
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{
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case BindableNumber<float> bNumber:
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yield return new SettingsSlider<float>
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{
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LabelText = attr.Label,
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TooltipText = attr.Description,
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Current = bNumber,
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KeyboardStep = 0.1f,
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};
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break;
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case BindableNumber<double> bNumber:
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yield return new SettingsSlider<double>
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{
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LabelText = attr.Label,
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TooltipText = attr.Description,
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Current = bNumber,
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KeyboardStep = 0.1f,
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};
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break;
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case BindableNumber<int> bNumber:
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yield return new SettingsSlider<int>
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{
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LabelText = attr.Label,
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TooltipText = attr.Description,
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Current = bNumber
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};
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break;
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case Bindable<bool> bBool:
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yield return new SettingsCheckbox
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{
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LabelText = attr.Label,
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TooltipText = attr.Description,
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Current = bBool
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};
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break;
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case Bindable<string> bString:
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yield return new SettingsTextBox
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{
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LabelText = attr.Label,
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TooltipText = attr.Description,
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Current = bString
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};
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break;
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case IBindable bindable:
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var dropdownType = typeof(ModSettingsEnumDropdown<>).MakeGenericType(bindable.GetType().GetGenericArguments()[0]);
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var dropdown = (Drawable)Activator.CreateInstance(dropdownType)!;
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dropdownType.GetProperty(nameof(SettingsDropdown<object>.LabelText))?.SetValue(dropdown, attr.Label);
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dropdownType.GetProperty(nameof(SettingsDropdown<object>.TooltipText))?.SetValue(dropdown, attr.Description);
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dropdownType.GetProperty(nameof(SettingsDropdown<object>.Current))?.SetValue(dropdown, bindable);
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yield return dropdown;
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break;
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default:
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throw new InvalidOperationException($"{nameof(SettingSourceAttribute)} was attached to an unsupported type ({value})");
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}
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}
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}
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private static readonly ConcurrentDictionary<Type, (SettingSourceAttribute, PropertyInfo)[]> property_info_cache = new ConcurrentDictionary<Type, (SettingSourceAttribute, PropertyInfo)[]>();
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/// <summary>
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/// Returns the underlying value of the given mod setting object.
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/// Can be used for serialization and equality comparison purposes.
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/// </summary>
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/// <param name="setting">A <see cref="SettingSourceAttribute"/> bindable.</param>
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public static object GetUnderlyingSettingValue(this object setting)
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{
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switch (setting)
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{
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case Bindable<double> d:
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return d.Value;
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case Bindable<int> i:
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return i.Value;
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case Bindable<float> f:
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return f.Value;
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case Bindable<bool> b:
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return b.Value;
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case IBindable u:
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// An unknown (e.g. enum) generic type.
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var valueMethod = u.GetType().GetProperty(nameof(IBindable<int>.Value));
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Debug.Assert(valueMethod != null);
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return valueMethod.GetValue(u)!;
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default:
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// fall back for non-bindable cases.
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return setting;
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}
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}
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public static IEnumerable<(SettingSourceAttribute, PropertyInfo)> GetSettingsSourceProperties(this object obj)
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{
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var type = obj.GetType();
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if (!property_info_cache.TryGetValue(type, out var properties))
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property_info_cache[type] = properties = getSettingsSourceProperties(type).ToArray();
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return properties;
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}
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private static IEnumerable<(SettingSourceAttribute, PropertyInfo)> getSettingsSourceProperties(Type type)
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{
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foreach (var property in type.GetProperties(BindingFlags.GetProperty | BindingFlags.Public | BindingFlags.Instance))
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{
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var attr = property.GetCustomAttribute<SettingSourceAttribute>(true);
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if (attr == null)
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continue;
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yield return (attr, property);
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}
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}
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public static ICollection<(SettingSourceAttribute, PropertyInfo)> GetOrderedSettingsSourceProperties(this object obj)
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=> obj.GetSettingsSourceProperties()
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.OrderBy(attr => attr.Item1)
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.ToArray();
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private partial class ModSettingsEnumDropdown<T> : SettingsEnumDropdown<T>
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where T : struct, Enum
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{
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protected override OsuDropdown<T> CreateDropdown() => new ModDropdownControl();
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private partial class ModDropdownControl : DropdownControl
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{
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// Set menu's max height low enough to workaround nested scroll issues (see https://github.com/ppy/osu-framework/issues/4536).
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protected override DropdownMenu CreateMenu() => base.CreateMenu().With(m => m.MaxHeight = 100);
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}
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}
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}
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}
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