osu/osu.Game/Input/Bindings/DatabasedKeyBindingInputMan...

62 lines
2.5 KiB
C#

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.Collections.Generic;
using osu.Framework.Allocation;
using osu.Framework.Input.Bindings;
using osu.Game.Rulesets;
using System.Linq;
namespace osu.Game.Input.Bindings
{
/// <summary>
/// A KeyBindingInputManager with a database backing for custom overrides.
/// </summary>
/// <typeparam name="T">The type of the custom action.</typeparam>
public class DatabasedKeyBindingInputManager<T> : KeyBindingContainer<T>
where T : struct
{
private readonly RulesetInfo ruleset;
private readonly int? variant;
private KeyBindingStore store;
public override IEnumerable<KeyBinding> DefaultKeyBindings => ruleset.CreateInstance().GetDefaultKeyBindings(variant ?? 0);
/// <summary>
/// Create a new instance.
/// </summary>
/// <param name="ruleset">A reference to identify the current <see cref="Ruleset"/>. Used to lookup mappings. Null for global mappings.</param>
/// <param name="variant">An optional variant for the specified <see cref="Ruleset"/>. Used when a ruleset has more than one possible keyboard layouts.</param>
/// <param name="simultaneousMode">Specify how to deal with multiple matches of <see cref="KeyCombination"/>s and <see cref="T"/>s.</param>
public DatabasedKeyBindingInputManager(RulesetInfo ruleset = null, int? variant = null, SimultaneousBindingMode simultaneousMode = SimultaneousBindingMode.None)
: base(simultaneousMode)
{
this.ruleset = ruleset;
this.variant = variant;
if (ruleset != null && variant == null)
throw new InvalidOperationException($"{nameof(variant)} can not be null when a non-null {nameof(ruleset)} is provided.");
}
[BackgroundDependencyLoader]
private void load(KeyBindingStore keyBindings)
{
store = keyBindings;
store.KeyBindingChanged += ReloadMappings;
}
protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
if (store != null)
store.KeyBindingChanged -= ReloadMappings;
}
protected override void ReloadMappings() => KeyBindings = store.Query(ruleset?.ID, variant).ToList();
}
}