.. _pages/properties_quickref#properties_quick_reference: Properties Quick Reference ************************** This is a quick reference for the various property features available in qooxdoo. Properties are declared in the constructor map of the class as a dedicated key-value pair (here called ``properties_decl``). This is the quick reference for properties_decl (expressed in an :doc:`EBNF-ish ` way): :: properties_decl := 'properties' ':' properites_map properties_map := '{' { prop_spec ',' } '}' prop_spec := '"' '"' ':' '{' { property_feature ',' } '}' property_feature := nullable_spec | apply_spec | event_spec | init_spec | refine_spec | check_spec | themeable_spec | inheritable_spec | group_spec | mode_spec | validate_spec | dereference_spec nullable_spec := 'nullable' ':' bool_val apply_spec := 'apply' ':' '"' '"' event_spec := 'event' ':' '"' '"' init_spec := 'init' ':' refine_spec := 'refine' ':' bool_val check_spec := 'check' ':' '"' type_spec '"' | '"' '"' | '"' '"' | enum_spec | inline_function | '"' bool_expression '"' validate_spec := 'validate' ':' '"' '"' | '' dereference_spec := 'dereference' ':' bool_val themeable_spec := 'themeable' ':' bool_val inheritable_spec := 'inheritable' ':' bool_val group_spec := 'group' ':' enum_spec mode_spec := 'mode' ':' '"' 'shorthand' '"' type_spec := 'Boolean' | 'String' | 'Number' | 'Integer' | 'Float' | 'Double' | 'Object' | 'Array' | 'Map' | 'Class' | 'Mixin' | 'Interface' | 'Theme' | 'Error' | 'RegExp' | 'Function' | 'Date' | 'Node' | 'Element' | 'Document' | 'Window' | 'Event' bool_val := 'true' | 'false' enum_spec := '[' ',' ',' ... ',' ']' inline_function := ? JavaScript anonymous function 'function (..) { ... }' ? bool_expression := ? JavaScript expression evaluating to true/false ?