[2009-05-25] Add l10n support to Float, Decimal and Int

[silverstripe-issues]

created by: @chillu (ischommer)
assigned to: trix
created at: 2009-05-25
original ticket: http://open.silverstripe.org/ticket/4127

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See #1373 and #1374 for similiar tickets.

Essentially, numbers in their "nice" display have to be formatted according to the locale (decimal and thousands separators).

== Features ==

• Add setLocale() and getLocale()
• Fix setValue() to parse times according to locale
• Set current locale upon construction based on i18n::get_current_locale(). Allow explicit passing in of locale in constructor
• Add setOptions() which is passed through to Zend_Locale
• Use Zend_Locale_Format::getNumber() for any formatting in Nice(), Round(), NiceRound(). Replace all calls to number_format()
• Use Zend_Locale_Format::isNumber() in setValue() and any other occurrence of is_numeric()
• For any conversions on Float, use prevision value set in requireField()

== Out of scope ==

• No support for non-western number systems (e.g. arabic)

== Notes ==

• See http://framework.zend.com/manual/en/zend.locale.parsing.html

[sminnee]

stale enhancement.