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Contents
module MotionKit
module_function
def siblings(view)
case view
when CALayer
view.superlayer ? view.superlayer.sublayers : []
else
view.superview ? view.superview.subviews : []
end
end
def children(view)
case view
when CALayer
view.sublayers
else
view.subviews
end
end
def parent(view)
case view
when CALayer
view.superlayer
else
view.superview
end
end
# - check view
# - check subviews (unless 'skip' is provided)
# - check siblings (skipping 'view')
# - go up to parent and repeat, skipping children
def nearest(view, skip=nil, &test)
return nil if view.nil?
if test.call(view)
return view
end
children = MotionKit.children(view)
siblings = MotionKit.siblings(view)
parent = MotionKit.parent(view)
found = nil
# only check the children starting at the "root", e.g. nearest hasn't been
# called recursively.
if !skip || skip == parent
children.each do |child|
found = nearest(child, &test)
break if found
end
return found if found
end
# siblings are closer than parents
# passing 'parent' means only check self and children
unless skip == parent
siblings.each do |sibling|
found = (sibling != view && nearest(sibling, parent, &test))
break if found
end
end
if found
found
elsif skip != parent
nearest(parent, true, &test)
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems