mirror of https://github.com/ppy/osu
76 lines
3.0 KiB
C#
76 lines
3.0 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.Generic;
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using osu.Framework.Allocation;
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using osu.Framework.Input.Bindings;
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using osu.Game.Rulesets;
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using System.Linq;
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namespace osu.Game.Input.Bindings
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{
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/// <summary>
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/// A KeyBindingInputManager with a database backing for custom overrides.
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/// </summary>
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/// <typeparam name="T">The type of the custom action.</typeparam>
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public class DatabasedKeyBindingContainer<T> : KeyBindingContainer<T>
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where T : struct
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{
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private readonly RulesetInfo ruleset;
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private readonly int? variant;
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private KeyBindingStore store;
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public override IEnumerable<KeyBinding> DefaultKeyBindings => ruleset.CreateInstance().GetDefaultKeyBindings(variant ?? 0);
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/// <summary>
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/// Create a new instance.
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/// </summary>
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/// <param name="ruleset">A reference to identify the current <see cref="Ruleset"/>. Used to lookup mappings. Null for global mappings.</param>
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/// <param name="variant">An optional variant for the specified <see cref="Ruleset"/>. Used when a ruleset has more than one possible keyboard layouts.</param>
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/// <param name="simultaneousMode">Specify how to deal with multiple matches of <see cref="KeyCombination"/>s and <typeparamref name="T"/>s.</param>
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/// <param name="matchingMode">Specify how to deal with exact <see cref="KeyCombination"/> matches.</param>
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public DatabasedKeyBindingContainer(RulesetInfo ruleset = null, int? variant = null, SimultaneousBindingMode simultaneousMode = SimultaneousBindingMode.None, KeyCombinationMatchingMode matchingMode = KeyCombinationMatchingMode.Any)
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: base(simultaneousMode, matchingMode)
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{
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this.ruleset = ruleset;
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this.variant = variant;
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if (ruleset != null && variant == null)
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throw new InvalidOperationException($"{nameof(variant)} can not be null when a non-null {nameof(ruleset)} is provided.");
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}
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[BackgroundDependencyLoader]
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private void load(KeyBindingStore keyBindings)
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{
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store = keyBindings;
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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store.KeyBindingChanged += ReloadMappings;
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}
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protected override void Dispose(bool isDisposing)
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{
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base.Dispose(isDisposing);
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if (store != null)
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store.KeyBindingChanged -= ReloadMappings;
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}
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protected override void ReloadMappings()
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{
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if (ruleset != null && !ruleset.ID.HasValue)
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// if the provided ruleset is not stored to the database, we have no way to retrieve custom bindings.
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// fallback to defaults instead.
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KeyBindings = DefaultKeyBindings;
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else
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KeyBindings = store.Query(ruleset?.ID, variant).ToList();
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}
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}
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}
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