====== behavior: currency ======
Currency input behavior. 

===== Elements =====
that have this behavior applied by default (see [[master style sheet]]): 
  *  ''<input type="currency" />'' - inline single line 
  *  ''<widget type="currency"></widget>'' 



===== Attributes =====
that this behavior knows about:
  *  ''value=float'' - initial value of the input element
  *  ''size=integer'' - determines value of (intrinsic and default) width of the element.
  *  ''format'' - format of number representation, string that accepts following ';'-separated fields:
     * ''grouping'' - number, number of digits in "thousand" groups. 
     * ''fdigits'' - number, fractional digits to show. 
     * ''leading-zero'' - true/false, show leading zero. 
     * ''decimal-sep'' - string, separator between integer and fractional parts. 
     * ''grouping-sep'' - string, separator between groups. 
     * ''negative-sign'' - true/false, true - show '-', false - wrap digits by '(' ')' characters. 
     * ''currency'' - string, currency sign to show. 
     * ''currency-after'' - true - currency sign after , false - sign is before numbers.

If the format attribute is ommited then the behavior will use current user settings for currency.

Automatic attributes - set by behavior and can be used for styling purposes:
  *  ''invalid'' - behavior will set this attribute if user provide wrong content (e.g. alpha characters) 
  *  ''negative'' - behavior will set this attribute if number is negative.

<note>
''format'' attribute can also be defined in CSS as a custom attribute ''-format''.
Thus you may define it for group of input elements as:
  input.decimal {
    behavior:decimal;
    -format="fdigits:2; leading-zero:true;"
  }
</note>


===== Events =====
Together with the standard set of events (mouse, keyboard, focus) //behavior: button// generates:
  *  EDIT_VALUE_CHANGED event - value of the element was changed due to user actions. Posted (asynchronous) event.
  *  EDIT_VALUE_CHANGING event - sent when value of the element is about to change. Synchronous event.

===== Value =====

type json::value::V_FLOAT, reflects current status of internal editing buffer.

===== Special key combinations =====

See [[h-smile:built-in-behaviors:edit]]