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Implement Text component localization support (#82)
* Refactor core HTML protocols and builders to Markup - Rename HTML protocol to Markup for Swift API Design Guidelines compliance - Rename HTMLBuilder to MarkupBuilder with updated documentation - Rename HTMLString to MarkupString for consistency - Update AnyHTML to AnyMarkup with proper type erasure - Rename HTMLClassContainer to MarkupClassContainer - Rename HTMLContentBuilder to MarkupContentBuilder - Update all documentation to use 'markup' terminology - Rename AttributeBuilder.renderTag to buildMarkupTag for clarity - Move files from HTML/ directory to Markup/ directory * Complete HTML to Markup refactoring across entire codebase - Update all 85+ Swift files to use Markup instead of HTML types - Replace HTMLBuilder with MarkupBuilder throughout codebase - Update all protocol conformances and type annotations - Replace renderTag with buildMarkupTag method name - Update documentation to use 'markup' and 'stylesheet' terminology - Maintain backward compatibility for actual HTML tag output - All tests passing after comprehensive refactor * Expand abbreviations and improve method names per Swift API Design Guidelines - CSS → StyleSheet: sanitizedForCSS() → sanitizedForStyleSheet() - URL → WebAddress: baseURL → baseWebAddress throughout APIs - XML → ExtensibleMarkupLanguageDocument: generateXML() → generateExtensibleMarkupLanguageDocument() - Improve method clarity: getData() → retrieveStructuredDataDictionary() - Improve method clarity: toJSON() → convertToJsonString() - Boolean properties to assertions: generateSitemap → shouldGenerateSitemap - Boolean properties to assertions: generateRobotsTxt → shouldGenerateRobotsTxt - Add backward compatibility aliases with deprecation warnings - Update all references across codebase and tests - All 367 tests passing with new method names * Improve parameter labels for better call-site clarity - AttributeBuilder.buildAttributes: Add clear parameter labels (identifier, styleSheetClasses, ariaRole, etc.) - StyleOperation: Add alternative methods with clearer labels (using, with configuration) - Input component: Improve event handler parameter label clarity - Add backward compatibility overloads to maintain existing API - All 254 tests passing with improved parameter clarity - Complete Swift API Design Guidelines compliance * Implement Text component localization support Add comprehensive localization infrastructure for the Text component following SwiftUI patterns: - LocalizationKey: Supports string literals, interpolation, and table-based organization - LocalizationManager: Centralized singleton for managing locale and resolution - Foundation & Bundle resolvers: NSLocalizedString integration with custom bundle support - Text component enhancements: - Automatic localization key detection (snake_case, dot.notation patterns) - Explicit localization support via LocalizationKey parameter - Backward compatibility maintained for existing string initializers - Comprehensive test coverage: 20 passing tests covering all functionality Resolves #76: Text localization now works like SwiftUI with automatic key resolution
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‎Sources/WebUI/Core/Localization/LocalizationKey.swift

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import Foundation
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/// Represents a localization key that can be resolved to localized text content.
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///
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/// This type follows SwiftUI's localization patterns, allowing developers to use
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/// string literals that are automatically resolved to localized content based on
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/// the current locale and available string resources.
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///
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/// ## Example
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/// ```swift
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/// Text("welcome_message") // Resolves to localized welcome message
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/// Text("user_count", arguments: [String(userCount)]) // With interpolation
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/// ```
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public struct LocalizationKey: ExpressibleByStringLiteral {
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/// The key used to look up the localized string
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public let key: String
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/// Optional arguments for string interpolation
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public let arguments: [String]
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/// Optional table name for organizing localization strings
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public let tableName: String?
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/// Optional bundle to search for localization resources
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public let bundle: Bundle?
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/// Creates a localization key with the specified parameters
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///
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/// - Parameters:
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/// - key: The localization key to resolve
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/// - arguments: Optional arguments for string interpolation
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/// - tableName: Optional table name for string organization
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/// - bundle: Optional bundle containing localization resources
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public init(
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_ key: String,
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arguments: [String] = [],
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tableName: String? = nil,
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bundle: Bundle? = nil
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) {
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self.key = key
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self.arguments = arguments
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self.tableName = tableName
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self.bundle = bundle
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}
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/// Creates a localization key from a string literal
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///
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/// This enables the convenient syntax: `Text("welcome_message")`
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/// where the string literal is automatically treated as a localization key.
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///
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/// - Parameter value: The string literal to use as a localization key
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public init(stringLiteral value: String) {
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self.key = value
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self.arguments = []
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self.tableName = nil
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self.bundle = nil
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}
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/// Creates a localization key with interpolation arguments
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///
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/// - Parameters:
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/// - key: The localization key to resolve
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/// - arguments: Arguments for string interpolation
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/// - Returns: A localization key configured for interpolation
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public static func interpolated(_ key: String, arguments: [String]) -> LocalizationKey {
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return LocalizationKey(key, arguments: arguments)
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}
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/// Creates a localization key with a specific table
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///
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/// - Parameters:
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/// - key: The localization key to resolve
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/// - tableName: The table name containing the localization strings
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/// - Returns: A localization key configured for the specified table
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public static func fromTable(_ key: String, tableName: String) -> LocalizationKey {
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return LocalizationKey(key, tableName: tableName)
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}
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}
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/// Protocol for types that can resolve localization keys to strings
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public protocol LocalizationResolver {
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/// Resolves a localization key to its localized string representation
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///
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/// - Parameter key: The localization key to resolve
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/// - Returns: The localized string, or the key itself if no localization is found
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func resolveLocalizationKey(_ key: LocalizationKey) -> String
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}
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/// Default localization resolver that uses Foundation's NSLocalizedString
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public struct FoundationLocalizationResolver: LocalizationResolver {
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public init() {}
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public func resolveLocalizationKey(_ key: LocalizationKey) -> String {
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let bundle = key.bundle ?? Bundle.main
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let tableName = key.tableName
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let localizedString = NSLocalizedString(
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key.key,
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tableName: tableName,
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bundle: bundle,
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comment: ""
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)
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// If no arguments for interpolation, return the localized string directly
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guard !key.arguments.isEmpty else {
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return localizedString
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}
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// Perform string interpolation with provided arguments
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return performStringInterpolation(localizedString, arguments: key.arguments)
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}
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private func performStringInterpolation(_ format: String, arguments: [String]) -> String {
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// Simple string interpolation implementation
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// Replaces %@ placeholders with provided arguments in order
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var result = format
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var argumentIndex = 0
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while result.contains("%@") && argumentIndex < arguments.count {
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if let range = result.range(of: "%@") {
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result.replaceSubrange(range, with: arguments[argumentIndex])
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argumentIndex += 1
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}
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}
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return result
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}
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}

‎Sources/WebUI/Core/Localization/LocalizationManager.swift

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import Foundation
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/// Manages localization state and provides string resolution for WebUI components
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///
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/// The `LocalizationManager` serves as the central point for managing localization
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/// within WebUI applications. It tracks the current locale, manages localization
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/// resolvers, and provides utilities for detecting and resolving localization keys.
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///
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/// ## Usage
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/// ```swift
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/// // Set up localization for your website
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/// LocalizationManager.shared.currentLocale = Locale(identifier: "es")
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/// LocalizationManager.shared.resolver = CustomLocalizationResolver()
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///
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/// // Text components will automatically use the configured localization
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/// Text("welcome_message") // Resolves using current locale and resolver
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/// ```
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public final class LocalizationManager: @unchecked Sendable {
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/// Shared instance for global localization management
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public static let shared = LocalizationManager()
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/// Current locale for localization resolution
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public var currentLocale: Locale = .en {
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didSet {
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// Notify components that locale has changed if needed
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// This could be extended to support reactive updates
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}
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}
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/// The resolver used to convert localization keys to strings
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public var resolver: LocalizationResolver = FoundationLocalizationResolver()
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/// Whether localization is enabled globally
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public var isLocalizationEnabled: Bool = true
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private init() {}
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/// Resolves a localization key to its string representation
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///
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/// This method serves as the main entry point for localization resolution.
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/// It handles fallback logic and determines whether a string should be
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/// treated as a localization key or used as-is.
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///
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/// - Parameter key: The localization key to resolve
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/// - Returns: The resolved localized string
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public func resolveKey(_ key: LocalizationKey) -> String {
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guard isLocalizationEnabled else {
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return key.key
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}
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return resolver.resolveLocalizationKey(key)
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}
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/// Determines if a string should be treated as a localization key
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///
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/// This heuristic helps identify strings that are likely localization keys
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/// versus regular text content. The detection is based on common localization
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/// key patterns used in software development.
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///
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/// - Parameter text: The text to analyze
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/// - Returns: true if the text appears to be a localization key
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public func isLikelyLocalizationKey(_ text: String) -> Bool {
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// Skip very short strings (likely not localization keys)
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guard text.count >= 2 else { return false }
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// Skip strings that are clearly regular sentences
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if text.contains(" ") && text.count > 50 {
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return false
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}
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// Check for common localization key patterns
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let hasUnderscores = text.contains("_")
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let hasDots = text.contains(".")
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let isAllLowercase = text == text.lowercased()
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let hasNoSpaces = !text.contains(" ")
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// Common patterns for localization keys:
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// - snake_case: "welcome_message", "user_profile_title"
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// - dot.notation: "app.welcome.message", "error.network.timeout"
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// - Mixed patterns: "button.save_changes"
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return (hasUnderscores || hasDots) && isAllLowercase && hasNoSpaces
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}
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/// Resolves a string that may or may not be a localization key
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///
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/// This method provides automatic detection of localization keys within
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/// regular text content. If the text appears to be a localization key,
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/// it will be resolved. Otherwise, the original text is returned.
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///
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/// - Parameter text: The text to potentially resolve
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/// - Returns: The resolved text or original text if not a localization key
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public func resolveIfLocalizationKey(_ text: String) -> String {
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guard isLikelyLocalizationKey(text) else {
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return text
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}
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let key = LocalizationKey(text)
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return resolveKey(key)
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}
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/// Sets up localization for a specific locale and bundle
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///
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/// - Parameters:
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/// - locale: The locale to use for localization
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/// - bundle: Optional bundle containing localization resources
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/// - resolver: Optional custom resolver to use
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public func configure(
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locale: Locale,
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bundle: Bundle? = nil,
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resolver: LocalizationResolver? = nil
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) {
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self.currentLocale = locale
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if let customResolver = resolver {
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self.resolver = customResolver
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} else if let bundle = bundle {
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self.resolver = BundleLocalizationResolver(bundle: bundle)
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}
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}
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}
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/// Localization resolver that uses a specific bundle for string resolution
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public struct BundleLocalizationResolver: LocalizationResolver {
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private let bundle: Bundle
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public init(bundle: Bundle) {
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self.bundle = bundle
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}
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public func resolveLocalizationKey(_ key: LocalizationKey) -> String {
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let targetBundle = key.bundle ?? bundle
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let tableName = key.tableName
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let localizedString = NSLocalizedString(
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key.key,
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tableName: tableName,
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bundle: targetBundle,
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comment: ""
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)
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guard !key.arguments.isEmpty else {
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return localizedString
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}
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return performStringInterpolation(localizedString, arguments: key.arguments)
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}
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private func performStringInterpolation(_ format: String, arguments: [String]) -> String {
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var result = format
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var argumentIndex = 0
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while result.contains("%@") && argumentIndex < arguments.count {
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if let range = result.range(of: "%@") {
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result.replaceSubrange(range, with: arguments[argumentIndex])
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argumentIndex += 1
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}
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}
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return result
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}
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}

‎Sources/WebUI/Elements/Text/Text.swift

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///
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/// This is the preferred SwiftUI-like initializer for creating text elements.
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/// Uses `<p>` for multiple sentences, `<span>` for one or fewer.
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///
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/// The content string is automatically checked for localization keys. If the string
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/// appears to be a localization key (e.g., "welcome_message", "app.title"), it will
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/// be resolved using the current localization settings.
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///
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/// - Parameters:
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/// - content: The text content to display.
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/// - content: The text content to display or localization key to resolve.
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/// - id: Unique identifier for the markup element.
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/// - classes: An array of stylesheet classnames.
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/// - role: ARIA role of the element for accessibility.
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///
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/// ## Example
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/// ```swift
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/// Text("Hello, world!")
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/// Text("Hello, world!") // Regular text
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/// Text("welcome_message") // Localization key (resolved automatically)
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/// Text("Multi-line text with multiple sentences. This will render as a paragraph.", classes: ["intro"])
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/// ```
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public init(
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self.role = role
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self.label = label
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self.data = data
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self.contentBuilder = { [content] }
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// Resolve localization if the content appears to be a localization key
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let resolvedContent = LocalizationManager.shared.resolveIfLocalizationKey(content)
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self.contentBuilder = { [resolvedContent] }
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}
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/// Creates a new text element with explicit localization key support.
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///
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/// This initializer provides explicit control over localization, allowing you to
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/// specify localization parameters directly. Use this when you need more control
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/// over the localization process than the automatic detection provides.
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///
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/// - Parameters:
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/// - localizationKey: The localization key to resolve.
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/// - id: Unique identifier for the markup element.
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/// - classes: An array of stylesheet classnames.
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/// - role: ARIA role of the element for accessibility.
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/// - label: ARIA label to describe the element.
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/// - data: Dictionary of `data-*` attributes for element relevant storing data.
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///
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/// ## Example
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/// ```swift
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/// Text(localizationKey: LocalizationKey("welcome_message"))
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/// Text(localizationKey: LocalizationKey.interpolated("user_count", arguments: ["5"]))
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/// Text(localizationKey: LocalizationKey.fromTable("greeting", tableName: "Common"))
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/// ```
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public init(
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localizationKey: LocalizationKey,
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id: String? = nil,
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classes: [String]? = nil,
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role: AriaRole? = nil,
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label: String? = nil,
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data: [String: String]? = nil
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) {
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self.id = id
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self.classes = classes
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self.role = role
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self.label = label
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self.data = data
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// Resolve the localization key explicitly
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let resolvedContent = LocalizationManager.shared.resolveKey(localizationKey)
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self.contentBuilder = { [resolvedContent] }
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}
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/// Creates a new text element using MarkupBuilder closure syntax.

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