Module: Native::Helpers
- Defined in:
- opal/stdlib/native.rb
Instance Method Summary collapse
-
#alias_native(new, old = new, as: nil) ⇒ Object
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
Exposes a native JavaScript method to Ruby
Examples:
class Element
extend 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.showParameters:
-
new
(String )
—
The name of the newly created method.
-
old
(String )
(defaults to: new)
—
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
(Class )
(defaults to: nil)
—
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.
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# File 'opal/stdlib/native.rb', line 146 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 elsif as define_method new do |*args, &block| value = Native .call (@native, old, *args, &block) if value as.new(value.to_n) end end else define_method new do |*args, &block| Native .call (@native, old, *args, &block) end end end
#native_accessor(*names) ⇒ Object
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# File 'opal/stdlib/native.rb', line 183 def native_accessor(*names) native_reader(*names) native_writer(*names) end