Class: Brrowser::Tab

Inherits:
Object
  • Object
show all
Defined in:
lib/brrowser/tab.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url = nil) ⇒ Tab

Returns a new instance of Tab.



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# File 'lib/brrowser/tab.rb', line 6

def initialize(url = nil)
  @url             = url
  @title           = ""
  @content         = ""
  @ix              = 0
  @links           = []
  @forms           = []
  @images          = []
  @back_history    = []
  @forward_history = []
end

Instance Attribute Details

#back_history ⇒ Object (readonly)

Returns the value of attribute back_history.



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# File 'lib/brrowser/tab.rb', line 4

def back_history
  @back_history
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/brrowser/tab.rb', line 3

def content
  @content
end

#forms ⇒ Object

Returns the value of attribute forms.



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# File 'lib/brrowser/tab.rb', line 3

def forms
  @forms
end

#forward_history ⇒ Object (readonly)

Returns the value of attribute forward_history.



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# File 'lib/brrowser/tab.rb', line 4

def forward_history
  @forward_history
end

#images ⇒ Object

Returns the value of attribute images.



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# File 'lib/brrowser/tab.rb', line 3

def images
  @images
end

#ix ⇒ Object

Returns the value of attribute ix.



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# File 'lib/brrowser/tab.rb', line 3

def ix
  @ix
end

#links ⇒ Object

Returns the value of attribute links.



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# File 'lib/brrowser/tab.rb', line 3

def links
  @links
end

#title ⇒ Object

Returns the value of attribute title.



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# File 'lib/brrowser/tab.rb', line 3

def title
  @title
end

#url ⇒ Object

Returns the value of attribute url.



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# File 'lib/brrowser/tab.rb', line 3

def url
  @url
end

Instance Method Details

#can_go_back? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/brrowser/tab.rb', line 45

def can_go_back?    = !@back_history.empty?

#can_go_forward? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/brrowser/tab.rb', line 46

def can_go_forward? = !@forward_history.empty?

#go_back ⇒ Object 



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# File 'lib/brrowser/tab.rb', line 27

def go_back
  return nil if @back_history.empty?
  @forward_history.push({ url: @url, ix: @ix })
  prev = @back_history.pop
  @url = prev[:url]
  @ix  = prev[:ix]
  @url
end

#go_forward ⇒ Object 



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# File 'lib/brrowser/tab.rb', line 36

def go_forward
  return nil if @forward_history.empty?
  @back_history.push({ url: @url, ix: @ix })
  nxt = @forward_history.pop
  @url = nxt[:url]
  @ix  = nxt[:ix]
  @url
end

#navigate(new_url) ⇒ Object 



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# File 'lib/brrowser/tab.rb', line 18

def navigate(new_url)
  if @url
    @back_history.push({ url: @url, ix: @ix })
  end
  @forward_history.clear
  @url = new_url
  @ix  = 0
end