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Contents
# = WxSugar - Accessors
#
# The default WxRuby interface has lots and lots of methods like
#
# * get_position()
# * set_size(a_size)
# * is_checked()
# * can_undo()
# * has_style(a_style)
#
# and so on. Methods that retrieve set, or query attributes of an object
# are more normally in Ruby called simply by the attribute name, or, in
# other cases, with a predicate method:
#
# * pos = my_widget.position
# * my_widget.size = a_size
# * my_widget.checked?
# * my_widget.can_undo?
# * my_widget.has_style?
#
# The wxRuby generation scripts capture most of these and automatically declare
# alias definitions for those. But not all.
# This extension captures the ones that are still missing an appropriate alias and
# automagically creates an alias for every WxRuby instance method that
# begins with +get_+, +set_+, +is_+, +can_+ and +has_+. Note that if you are calling a
# 'setter' method on self, you must explicitly send the message to self:
#
# # set's self size to be 100px by 100px
# self.size = Wx::Size.new(100, 100)
# # only sets the value of a local variable 'size'
# size = Wx::Size.new
module WxRubyStyleAccessors
# Ruby-style method named are implemented by method-missing; if an
# unknown method is called, see if it is a rubyish name for a real
# method. In principle it would be possible to set up real aliases for
# them at start-up, but in practice this is far too slow for all the
# classes that need to be started up.
def method_missing(sym, *args)
case sym.to_s
when /^(\w+)\=$/
meth = "set_#{$1}"
when /^((?:has|can)\w+)\?$/
meth = $1
when /^(\w+)\?$/
meth = "is_#{$1}"
else
meth = "get_#{sym}"
end
if respond_to?(meth)
send(meth, *args)
else
super
end
end
def self.included(mod)
mod.extend WxRubyStyleAccessors
mod.constants.collect { | c | mod.const_get(c) }.grep(Module).each do |mod|
mod.include WxRubyStyleAccessors if mod.name.start_with?('Wx::') # only setup Wx namespace
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems