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Versions: 8
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require 'glimmer/data_binding/observable'
require 'glimmer/data_binding/observer'
module Glimmer
module DataBinding
class ElementBinding
include Observable
include Observer
attr_reader :element, :property, :translator, :sub_property
def initialize(element, property, translator: nil)
@element = element
if (property_parts = property.to_s.match(Glimmer::Web::ElementProxy::REGEX_CLASS_NAME_SUB_PROPERTY))
@property, @sub_property = property_parts.to_a.drop(1)
elsif (property_parts = property.to_s.match(Glimmer::Web::ElementProxy::REGEX_STYLE_SUB_PROPERTY))
@property, @sub_property = property_parts.to_a.drop(1)
@sub_property = @sub_property.gsub('_', '-')
else
@property = property
end
@translator = translator
if @element.respond_to?(:remove)
unregister_handler = lambda { |dispose_event| unregister_all_observables }
@element.handle_observation_request('on_remove', unregister_handler)
end
end
def call(value)
evaluated_property_value = evaluate_property
converted_value = @translator&.call(value, evaluated_property_value) || value
if converted_value != evaluated_property_value
if @sub_property
if @property.to_s == 'class_name'
@element.class_name_included(@sub_property, converted_value)
elsif @property.to_s == 'style'
@element.style_property(@sub_property, converted_value)
end
else
@element.send("#{@property}=", converted_value)
end
end
end
def evaluate_property
if @sub_property
if @property.to_s == 'class_name'
@element.class_name_included(@sub_property)
elsif @property.to_s == 'style'
@element.style_property(@sub_property)
end
else
@element.send(@property)
end
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems