Class: Ruber::World::Environment::ViewList

Inherits:

Object

• Object
• Ruber::World::Environment::ViewList

show all

Defined in:

lib/ruber/world/environment.rb

Instance Attribute Summary (collapse)

• - (Object) by_activation readonly

  Returns the value of attribute by_activation.

• - (Object) by_document readonly

  Returns the value of attribute by_document.

• - (Object) by_tab readonly

  Returns the value of attribute by_tab.

• - (Object) tabs readonly

  Returns the value of attribute tabs.

Instance Method Summary (collapse)

• - (Object) add_view(view, tab)
• - (ViewList) initialize constructor

  A new instance of ViewList.

• - (Object) move_to_front(view)
• - (Object) remove_view(view)

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# File 'lib/ruber/world/environment.rb', line 34

def initialize
  @by_activation = []
  @by_tab = {}
  @by_document = {}
  @tabs = {}
end

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# File 'lib/ruber/world/environment.rb', line 32

def by_activation
  @by_activation
end

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# File 'lib/ruber/world/environment.rb', line 32

def by_document
  @by_document
end

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# File 'lib/ruber/world/environment.rb', line 32

def by_tab
  @by_tab
end

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# File 'lib/ruber/world/environment.rb', line 32

def tabs
  @tabs
end

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# File 'lib/ruber/world/environment.rb', line 41

def add_view view, tab
  @by_activation << view
  (@by_tab[tab] ||= []) << view
  (@by_document[view.document] ||= []) << view
  @tabs[view] = tab
end

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# File 'lib/ruber/world/environment.rb', line 58

def move_to_front view
  @by_activation.unshift @by_activation.delete(view)
  tab = @tabs[view]
  @by_tab[tab].unshift @by_tab[tab].delete(view)
  doc = view.document
  @by_document[doc].unshift @by_document[doc].delete(view)
end

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# File 'lib/ruber/world/environment.rb', line 48

def remove_view view
  tab = @tabs[view]
  @by_activation.delete view
  @by_tab[tab].delete view
  @by_tab.delete tab if @by_tab[tab].empty?
  @by_document[view.document].delete view
  @by_document.delete view.document if @by_document[view.document].empty?
  @tabs.delete view
end