Module: UnderOs::UI::Wrap

Included in:
View
Defined in:
lib/under_os/ui/utils/wrap.rb

Overview

The raw -> abstraction wrapping code for UI::Views

Constant Summary collapse

INSTANCES_CACHE = 
{}
RAW_WRAPS_MAP = 
{}
WRAPS_TAGS_MAP = 
{}

Class Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/under_os/ui/utils/wrap.rb', line 10

def self.included(base)
  base.instance_eval do
    attr_accessor :_

    def self.wraps(raw_class, options={})
      RAW_WRAPS_MAP[self] = raw_class
      tag(options[:tag]) if options[:tag]
    end

    def self.tag(name)
      WRAPS_TAGS_MAP[name.to_s] = self
    end

    def self.new(options={}, *args, &block)
      return INSTANCES_CACHE[options] if INSTANCES_CACHE[options]

      if options.is_a?(UIView)
        klass = find_wrap_for(options.class)
        view  = options; options = args.shift || {}
      else
        klass = self
        view  = find_raw_class_for(self).alloc
        if view.class == UICollectionView
          view.initWithFrame([[0, 0], [0, 0]], collectionViewLayout: UICollectionViewFlowLayout.alloc.init)
        else
          view.initWithFrame([[0, 0], [0, 0]])
        end
      end

      return nil if ! klass

      klass.alloc.tap do |inst|
        INSTANCES_CACHE[inst._ = view] = inst
        inst.__send__ :initialize, options, *args, &block
      end
    end

    def self.rewrap(view, *args, &block)
      view = view._ if view.is_a?(UnderOs::UI::View)

      alloc.tap do |inst|
        INSTANCES_CACHE[inst._ = view] = inst
        inst.__send__ :initialize, *args, &block
      end
    end

    def self.find_wrap_for(raw_class)
      RAW_WRAPS_MAP.each do |wrap, raw|
        return wrap if raw == raw_class
      end

      return nil
    end

    def self.find_raw_class_for(wrap)
      while wrap
        return RAW_WRAPS_MAP[wrap] if RAW_WRAPS_MAP[wrap]
        wrap = wrap.superclass
      end
    end

    def self.wrap_for(raw_view)
      INSTANCES_CACHE[raw_view]
    end
  end
end