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Versions: 16
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Stored size: 1.95 KB
Contents
module Watir
module Scrolling
def scroll
Scroll.new(self)
end
end
class Scroll
def initialize(object)
@object = object
end
# Scrolls by offset.
# @param [Fixnum] left Horizontal offset
# @param [Fixnum] top Vertical offset
#
def by(left, top)
@object.browser.execute_script('window.scrollBy(arguments[0], arguments[1]);', Integer(left), Integer(top))
self
end
#
# Scrolls to specified location.
# @param [Symbol] param
#
def to(param = :top)
args = @object.is_a?(Watir::Element) ? element_scroll(param) : browser_scroll(param)
raise ArgumentError, "Don't know how to scroll #{@object} to: #{param}!" if args.nil?
@object.browser.execute_script(*args)
self
end
private
def element_scroll(param)
script = case param
when :top, :start
'arguments[0].scrollIntoView();'
when :center
<<-JS
var bodyRect = document.body.getBoundingClientRect();
var elementRect = arguments[0].getBoundingClientRect();
var left = (elementRect.left - bodyRect.left) - (window.innerWidth / 2);
var top = (elementRect.top - bodyRect.top) - (window.innerHeight / 2);
window.scrollTo(left, top);
JS
when :bottom, :end
'arguments[0].scrollIntoView(false);'
else
return nil
end
[script, @object]
end
def browser_scroll(param)
case param
when :top, :start
'window.scrollTo(0, 0);'
when :center
'window.scrollTo(window.outerWidth / 2, window.outerHeight / 2);'
when :bottom, :end
'window.scrollTo(0, document.body.scrollHeight);'
when Array
['window.scrollTo(arguments[0], arguments[1]);', Integer(param[0]), Integer(param[1])]
end
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems