An abstract class that provides support for localized strings. More...

#include <Wt/WLocalizedStrings.h>

Inheritance diagram for Wt::WLocalizedStrings:

Public Member Functions
virtual	~WLocalizedStrings ()
	Destructor.

virtual void	hibernate ()
	Purges memory resources, if possible. More...

virtual LocalizedString	resolveKey (const WLocale &locale, const std::string &key)=0
	Resolves a key in the given locale. More...

virtual LocalizedString	resolvePluralKey (const WLocale &locale, const std::string &key, ::uint64_t amount)
	Resolves the plural form of a key in the given locale. More...

Static Public Member Functions
static int	evaluatePluralExpression (const std::string &expression, ::uint64_t n)
	Utility method to evaluate a plural expression. More...

Detailed Description

An abstract class that provides support for localized strings.

This abstract class provides the content to localized WStrings, by resolving the key to a string using the current application locale.

See also: WString::tr(), WApplication::setLocalizedStrings()

Member Function Documentation

◆ evaluatePluralExpression()

int Wt::WLocalizedStrings::evaluatePluralExpression	(	const std::string &	expression,
		::uint64_t	n
	)

static

Utility method to evaluate a plural expression.

This evaluates C expressions such as used by ngettext for a particular value, which can be useful to implement plural key resolution.

See also: resolvePluralKey()

◆ hibernate()

void Wt::WLocalizedStrings::hibernate ( )

virtual

Purges memory resources, if possible.

This is called afer event handling, and is an opportunity to conserve memory inbetween events, by freeing memory used for cached key/value bindings, if applicable.

The default implementation does nothing.

Reimplemented in Wt::WMessageResourceBundle, and Wt::WCombinedLocalizedStrings.

◆ resolveKey()

virtual LocalizedString Wt::WLocalizedStrings::resolveKey	(	const WLocale &	locale,
		const std::string &	key
	)

pure virtual

Resolves a key in the given locale.

This method is used by WString to obtain the UTF-8 value corresponding to a key in the given locale.

Returns a successful LocalizedString if the key could be resolved.

See also: WString::tr()

Implemented in Wt::WMessageResourceBundle, and Wt::WCombinedLocalizedStrings.

◆ resolvePluralKey()

LocalizedString Wt::WLocalizedStrings::resolvePluralKey	(	const WLocale &	locale,
		const std::string &	key,
		::uint64_t	amount
	)

virtual

Resolves the plural form of a key in the given locale.

This method is used by WString to obtain the UTF-8 value corresponding to a key in the current locale, taking into account the possibility of multiple plural forms, and chosing the right plural form based on the amount passed.

Throws a std::logic_error if the underlying implementation does not provide support for plural internationalized strings.