Leonid PershinandClaude Opus 5
8b552470b7
Strings move into Localization/Strings.resx plus a Russian satellite. XAML uses
a {l:Loc Key} markup extension that yields a binding through the localizer's
indexer rather than a resolved string, so changing the language raises
PropertyChanged for the indexer and every caption in the app re-reads at once.
Resolving strings once at load would have been simpler and would have needed an
app restart to take effect.
Three places where this is more than a string swap:
Russian has three plural forms, so counted messages are assembled from .One /
.Few / .Many keys via Localizer.Plural instead of "{0} records" with an English
plural glued on. "1 запись", "3 записи", "7 записей".
Enum captions in pickers go through LocalizedOption<T>. A value converter would
resolve the caption once and never notice a language change; the wrapper keeps
identity on the enum value so the selection survives, while the label follows
the localizer. It needed a non-generic base for DataTemplate x:DataType, since
Avalonia 12 compiles bindings by default and cannot infer one for an open
generic.
Text originating in the domain would otherwise have stayed English under a
Russian UI — the screenshots showed exactly that. AvParser.Core still knows
nothing about languages: ParseError now carries a Code and Arguments, and the UI
translates Parse.Error.{Code} with a fallback to the English message. Parser
names work the same way (Parser.{id}.Name falling back to DisplayName), which
keeps "add a parser = one registration line" true — an untranslated parser shows
its own name rather than a missing-key marker.
Both .resx files are generated from one table so a key cannot exist in one and
be missing from the other, and the tests assert that, plus no blank translations
and identical {0} placeholder sets — a translation that drops a placeholder
throws at runtime rather than merely reading oddly. A headless test switches
language on a live shell and asserts the rendered text changes without the tree
being rebuilt.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
17 lines
525 B
C#
17 lines
525 B
C#
using AvParser.Core.Settings;
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namespace AvParser.UI.Services;
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/// <summary>Applies and persists the UI language.</summary>
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public interface ILocalizationService
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{
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/// <summary>The language currently in effect.</summary>
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AppLanguage Current { get; }
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/// <summary>Emits the language, starting with the present value.</summary>
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IObservable<AppLanguage> Changes { get; }
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/// <summary>Applies a language to the running application and persists the choice.</summary>
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void Apply(AppLanguage language);
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}
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