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# frozen_string_literal: true
module Capybara
module Selenium
module Scroll
def scroll_by(x, y)
driver.execute_script <<~JS, self, x, y
var el = arguments[0];
if (el.scrollBy){
el.scrollBy(arguments[1], arguments[2]);
} else {
el.scrollTop = el.scrollTop + arguments[2];
el.scrollLeft = el.scrollLeft + arguments[1];
}
JS
end
def scroll_to(element, location, position = nil)
# location, element = element, nil if element.is_a? Symbol
if element.is_a? Capybara::Selenium::Node
scroll_element_to_location(element, location)
elsif location.is_a? Symbol
scroll_to_location(location)
else
scroll_to_coords(*position)
end
self
end
private
def scroll_element_to_location(element, location)
scroll_opts = case location
when :top
'true'
when :bottom
'false'
when :center
"{behavior: 'instant', block: 'center'}"
else
raise ArgumentError, "Invalid scroll_to location: #{location}"
end
driver.execute_script <<~JS, element
arguments[0].scrollIntoView(#{scroll_opts})
JS
end
SCROLL_POSITIONS = {
top: '0',
bottom: 'arguments[0].scrollHeight',
center: '(arguments[0].scrollHeight - arguments[0].clientHeight)/2'
}.freeze
def scroll_to_location(location)
driver.execute_script <<~JS, self
if (arguments[0].scrollTo){
arguments[0].scrollTo(0, #{SCROLL_POSITIONS[location]});
} else {
arguments[0].scrollTop = #{SCROLL_POSITIONS[location]};
}
JS
end
def scroll_to_coords(x, y)
driver.execute_script <<~JS, self, x, y
if (arguments[0].scrollTo){
arguments[0].scrollTo(arguments[1], arguments[2]);
} else {
arguments[0].scrollTop = arguments[2];
arguments[0].scrollLeft = arguments[1];
}
JS
end
end
end
end
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