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Contents
module MotionKit
module_function
# performs a breadth-first search
def find_first_view(root, &condition)
if condition.call(root)
root
else
found = nil
root.subviews.find do |subview|
found = find_first_view(subview, &condition)
end
return found
end
end
# performs a depth-first and reversed search
def find_last_view(root, &condition)
found = nil
root.subviews.reverse.find do |subview|
found = find_last_view(subview, &condition)
end
if ! found && condition.call(root)
found = root
end
return found
end
# performs a breadth-first search, but returns all matches
def find_all_views(root, &condition)
found = []
if condition.call(root)
found << root
end
(root.subviews || []).each do |subview|
found.concat(find_all_views(subview, &condition))
end
return found
end
# similar to find_all_views, but for CALayer
def find_all_layers(root, &condition)
found = []
if condition.call(root)
found << root
end
(root.sublayers || []).each do |sublayer|
found.concat(find_all_layers(sublayer, &condition))
end
return found
end
end
Version data entries
18 entries across 18 versions & 1 rubygems