React (Vite) Localization

This project is a React-based application that facilitates language localization. It consists of several components that work together to allow users to switch the language of the application's interface and display content in the selected language. Here's a detailed description of its components and how they function together:

1. HelloTitle Component:

   • This component is responsible for displaying the title "Hello" in different languages based on the user's selection.
   • It uses the Languages object to retrieve the appropriate text using the ExampleText method, which returns an object containing localized strings.
   • The selectedLang prop determines which language's greeting to display.
   • PropTypes are used to ensure that Languages provides the necessary method and that selectedLang is a string.

2. LanguageContext and LanguageProvider:

   • LanguageContext is a React context that holds the current language state and a function to update it (handleLangChange).
   • LanguageProvider is a component that wraps the application, providing the language state and updater function to all components within its tree via the context.
   • It accepts an initialLanguage prop to set the default language, which is "cz" if not specified.
   • PropTypes are used to ensure that children is a React node and initialLanguage is a string.

3. LocalizationComponent:

   • This component renders buttons for each available language, allowing the user to switch between them.
   • It uses the LocalizationButtons method from the Languages object to get the button data.
   • It maintains its own activeId state to highlight the currently active language button.
   • When a button is clicked, it calls handleLangChange with the new language's textId, and updates the activeId.
   • PropTypes validate that handleLangChange is a function.

4. Languages Object:

   • It provides the data for localization through two methods: LocalizationButtons returns an array of objects for each language button, and ExampleText returns an object with localized strings for different languages.

5. App Component:

   • The main component of the application that uses the LanguageContext to access the current language and the function to update it.
   • It renders the HelloTitle component to display the greeting and the LocalizationComponent to allow language switching.
   • PropTypes are used to ensure the correct types for LanguageContext, Languages, LocalizationComponent, and HelloTitle.

6. React Application Setup:

   • The ReactDOM.createRoot method is used to initialize the app and render it into the DOM.
   • The entire application is wrapped in the LanguageProvider to make the language state and updater function available throughout the application.
   • The App component is passed the necessary props, including the LanguageContext and components like Localization and Components.

In essence, this project is structured to provide a multilingual experience, where users can select their preferred language, and the application will respond by displaying content in that language. The use of context allows for easy state management across the application, and the use of prop types ensures that components receive the correct data.