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* Added ability to set options for layouts. NSLayoutFormatDirectionLeadi... #1

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39 changes: 28 additions & 11 deletions lib/motion-layout/layout.rb
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
module Motion
class Layout
def initialize(&block)
def initialize(delegate = nil, &block)
@delegate = delegate
@verticals = []
@horizontals = []
@metrics = {}
Expand All @@ -13,20 +14,36 @@ def metrics(metrics)
@metrics = metrics
end

def subviews(subviews)
@subviews = subviews
def subviews(*subviews)
if subviews[0].is_a? Hash
@subviews = subviews.subviews[0]
elsif (subviews[0].is_a?(String) || subviews[0].is_a?(Symbol)) and @delegate
@subviews = {}
subviews.each do |v|
if @delegate.respond_to?(v)
@subviews[v.to_s] = self.send(v)
elsif @delegate.instance_variable_defined? "@#{v}"
@subviews[v.to_s] = @delegate.instance_variable_get "@#{v}"
else
raise "Couldn't find method or instance variable '#{v}' on the delegate"
end
end
else
raise "subviews only accepts a hash or an array (if delegate is defined)"
end

end

def view(view)
@view = view
end

def horizontal(horizontal)
@horizontals << horizontal
def horizontal(horizontal, options = NSLayoutFormatDirectionLeadingToTrailing)
@horizontals << [horizontal, options]
end

def vertical(vertical)
@verticals << vertical
def vertical(vertical, options = NSLayoutFormatDirectionLeadingToTrailing)
@verticals << [vertical, options]
end

private
Expand All @@ -38,11 +55,11 @@ def strain
end

constraints = []
constraints += @verticals.map do |vertical|
NSLayoutConstraint.constraintsWithVisualFormat("V:#{vertical}", options:NSLayoutFormatAlignAllCenterX, metrics:@metrics, views:@subviews)
constraints += @verticals.map do |vertical, options|
NSLayoutConstraint.constraintsWithVisualFormat("V:#{vertical}", options:options, metrics:@metrics, views:@subviews)
end
constraints += @horizontals.map do |horizontal|
NSLayoutConstraint.constraintsWithVisualFormat("H:#{horizontal}", options:NSLayoutFormatAlignAllCenterY, metrics:@metrics, views:@subviews)
constraints += @horizontals.map do |horizontal, options|
NSLayoutConstraint.constraintsWithVisualFormat("H:#{horizontal}", options:options, metrics:@metrics, views:@subviews)
end

@view.addConstraints(constraints.flatten)
Expand Down