TranslationManager Class Reference

Manages the loading and delivery of translations for applications. More...

#include <translation_manager.h>

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Public Member Functions
QString	GetCurrentLanguage () const
	Returns the currently loaded language code.
bool	Initialize (const QString &language_code)
	Initializes the translation manager by loading the appropriate language file.
QString	Translate (const QString &key, const QString &default_value=QString()) const
	Retrieves the translated string for the specified key.

Static Public Member Functions
static TranslationManager *	GetInstance ()
	Returns an instance of the TranslationManager singleton.

Private Member Functions
bool	LoadTranslations (const QString &language_code)
	Loads translations from a JSON file for the specified language code.
TranslationManager &	operator= (const TranslationManager &)=delete
	Removed assignment constructor.
	TranslationManager (const TranslationManager &)=delete
	Removed copy constructor.
	TranslationManager (QObject *parent=nullptr)
	Private constructor to enforce the singleton pattern.

Private Attributes
QString	current_language_code_
	Currently loaded language code.
bool	initialized_ = false
	A flag indicating whether the manager has been initialized.
QJsonObject	translations_
	It stores the loaded translations as a JSON object.

Static Private Attributes
static TranslationManager *	instance_ = nullptr
	Static singleton instance.
static QMutex	mutex_
	Mutex to protect instance creation in a multithreaded environment.

Detailed Description

Manages the loading and delivery of translations for applications.

The class implements the singleton pattern and is responsible for loading the corresponding JSON file with translations based on the selected language and providing a method to retrieve the translated strings.

Constructor & Destructor Documentation

TranslationManager() [1/2]

TranslationManager::TranslationManager ( QObject * parent = nullptr )

inlineexplicitprivate

Private constructor to enforce the singleton pattern.

Parameters

parent

Optional QObject parent.

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TranslationManager() [2/2]

TranslationManager::TranslationManager ( const TranslationManager & )

privatedelete

Removed copy constructor.

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Member Function Documentation

GetCurrentLanguage()

QString TranslationManager::GetCurrentLanguage

(

)

const

Returns the currently loaded language code.

Returns

Language code (e.g. "en", "pl").

GetInstance()

TranslationManager * TranslationManager::GetInstance ( )

static

Returns an instance of the TranslationManager singleton.

Returns

A pointer to an instance of TranslationManager.

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Initialize()

bool TranslationManager::Initialize

(

const QString &

language_code

)

Initializes the translation manager by loading the appropriate language file.

Parameters

language_code

Language code (e.g., "en", "pl").

Returns

True if the initialization and loading of translations was successful, false otherwise.

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LoadTranslations()

bool TranslationManager::LoadTranslations ( const QString & language_code )

private

Loads translations from a JSON file for the specified language code.

Parameters

language_code

Language code to be loaded.

Returns

True if loading is successful, false otherwise.

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operator=()

TranslationManager & TranslationManager::operator= ( const TranslationManager & )

privatedelete

Removed assignment constructor.

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Translate()

QString TranslationManager::Translate	(	const QString &	key,
		const QString &	default_value = QString() ) const

Retrieves the translated string for the specified key.

The key should have the format “Class.Widget.Property” or similar, corresponding to the structure in the JSON file.

Parameters

key	Translation key.
default_value	The value returned if the key is not found.

Returns

Translated string or default_value.

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Member Data Documentation

current_language_code_

QString TranslationManager::current_language_code_

private

Currently loaded language code.

initialized_

bool TranslationManager::initialized_ = false

private

A flag indicating whether the manager has been initialized.

instance_

TranslationManager * TranslationManager::instance_ = nullptr

staticprivate

Static singleton instance.

mutex_

QMutex TranslationManager::mutex_

staticprivate

Mutex to protect instance creation in a multithreaded environment.

translations_

QJsonObject TranslationManager::translations_

private

It stores the loaded translations as a JSON object.

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The documentation for this class was generated from the following files:

• src/app/managers/translation_manager.h
• src/app/managers/translation_manager.cpp