Module: Native::Helpers
- Defined in:
- opal/stdlib/native.rb
Instance Method Summary collapse
-
#alias_native(new, old = new, as: nil) ⇒ Object
Public: Exposes a native JavaScript method to Ruby.
- #native_accessor(*names) ⇒ Object
- #native_reader(*names) ⇒ Object
- #native_writer(*names) ⇒ Object
Instance Method Details
#alias_native(new, old = new, as: nil) ⇒ Object
Public: Exposes a native JavaScript method to Ruby
new - The name of the newly created method.
old - The name of the native JavaScript method to be exposed.
If the name ends with "=" (e.g. foo=) it will be interpreted as
a property setter. (default: the value of "new")
as - If provided the values returned by the original method will be
returned as instances of the passed class. The class passed to "as"
is expected to accept a native JavaScript value.
Examples
class Element include Native::Helpers
alias_native :add_class, :addClass
alias_native :show
alias_native :hide
def initialize(selector)
@native = `$(#{selector})`
end
end
titles = Element.new('h1') titles.add_class :foo titles.hide titles.show
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# File 'opal/stdlib/native.rb', line 138 def alias_native(new, old = new, as: nil) if old.end_with? ?= define_method new do |value| `#@native[#{old[0 .. -2]}] = #{Native .convert (value)}` value end else if as define_method new do |*args, &block| if value = Native .call (@native, old, *args, &block) as.new(value.to_n) end end else define_method new do |*args, &block| Native .call (@native, old, *args, &block) end end end end
#native_accessor(*names) ⇒ Object
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# File 'opal/stdlib/native.rb', line 176 def native_accessor(*names) native_reader(*names) native_writer(*names) end