Class: Element

Inherits:
Object show all
Defined in:
lib/element/element.rb

Overview

The Element class is a wrapper for an element attribute hash which exposes the hash and also allows access to the values using the keys as if they were methods.

Instance Method Summary collapse

Constructor Details

#initialize(hash) ⇒ Element

Public: Initializes an element. NOT FOR USE IN TESTS.

Returns nothing.



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# File 'lib/element/element.rb', line 9

def initialize(hash)
  @hash = rubify(hash)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *args, &_) ⇒ Object

Public: Gets/sets element attribute via accessor. NOT FOR USE IN TESTS.

m - Symbol or String name of attribute. args - Splat Array of Object arguments. When used like a setter, assigns the first item as the value. _ - Block unused.

Returns nothing.



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# File 'lib/element/element.rb', line 43

def method_missing(m, *args, &_)
  m = m.to_s
  m_key = m.sub(/=$/, '')
  raise %Q(No attribute "#{m_key}"!) unless @hash.keys.include?(m_key)
  if m_key.eql?(m)
    @hash[m_key]
  else
    @hash[m_key] = args.first
  end
end

Instance Method Details

#[](key) ⇒ Object

Public: Gets element attribute.

key - Symbol attribute to retrieve.

Returns Object value of specified attribute.



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# File 'lib/element/element.rb', line 18

def [](key)
  key = key.to_s
  raise %Q(No attribute "#{key}"!) unless @hash.keys.include?(key)
  @hash[key]
end

#[]=(key, value) ⇒ Object

Public: Sets element attribute.

key - Symbol attribute to set. value - Object value to set.

Returns nothing.



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# File 'lib/element/element.rb', line 30

def []=(key, value)
  key = key.to_s
  raise %Q(No attribute "#{key}"!) unless @hash.keys.include?(key)
  @hash[key] = value
end

#contains?(element) ⇒ Boolean

Public: Checks if the element contains the specified element or area.

element - Element or area Hash with keys :x, :y, :width, :height.

Returns true if the element contains the specified element or area.

Returns:

  • (Boolean) 


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# File 'lib/element/element.rb', line 59

def contains?(element)
  element[:x] >= self[:x] && (element[:x] + element[:width]) <= (self[:x] + self[:width]) &&
      element[:y] >= self[:y] && (element[:y] + element[:height]) <= (self[:y] + self[:height])
end