A game framework written with osu! in mind.
keii.dev
1// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
2// See the LICENCE file in the repository root for full licence text.
3
4#pragma warning disable 8632 // TODO: can be #nullable enable when Bindables are updated to also be.
5
6using osu.Framework.Bindables;
7
8namespace osu.Framework.Localisation
9{
10 public partial class LocalisationManager
11 {
12 private class LocalisedBindableString : Bindable<string>, ILocalisedBindableString
13 {
14 private IBindable<LocalisationParameters> parameters;
15
16 private LocalisableString text;
17
18 private readonly LocalisationManager manager;
19
20 public LocalisedBindableString(LocalisableString text, LocalisationManager manager)
21 {
22 this.text = text;
23 this.manager = manager;
24
25 updateValue();
26 }
27
28 private void updateValue()
29 {
30 switch (text.Data)
31 {
32 case string plain:
33 Value = plain;
34 break;
35
36 case ILocalisableStringData data:
37 if (parameters == null)
38 {
39 parameters = new Bindable<LocalisationParameters>();
40 parameters.BindTo(manager.currentParameters);
41 parameters.BindValueChanged(_ => updateValue());
42 }
43
44 Value = data.GetLocalised(parameters.Value);
45 break;
46
47 default:
48 Value = string.Empty;
49 break;
50 }
51 }
52
53 LocalisableString ILocalisedBindableString.Text
54 {
55 set
56 {
57 if (text.Equals(value))
58 return;
59
60 text = value;
61
62 updateValue();
63 }
64 }
65
66 internal override void UnbindAllInternal()
67 {
68 base.UnbindAllInternal();
69
70 // optimisation to ensure cleanup happens aggressively.
71 // without this, the central parameters bindable's internal WeakList can balloon out of control due to the
72 // weak reference cleanup only occurring on Value retrieval (which rarely/never happens in this case).
73 parameters?.UnbindAll();
74 }
75 }
76 }
77}