Class: JarEd::Buffer

Inherits:
Object
  • Object
show all
Defined in:
lib/jared/buffer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Buffer

Returns a new instance of Buffer.



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# File 'lib/jared/buffer.rb', line 7

def initialize(file)
  @file = file
  @window_position = 0
  @cursor_row = 0
  @cursor_column = 0
end

Instance Attribute Details

#cursor_column ⇒ Object (readonly)

Returns the value of attribute cursor_column.



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# File 'lib/jared/buffer.rb', line 3

def cursor_column
  @cursor_column
end

#cursor_row ⇒ Object (readonly)

Returns the value of attribute cursor_row.



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# File 'lib/jared/buffer.rb', line 3

def cursor_row
  @cursor_row
end

#window_position ⇒ Object (readonly)

Returns the value of attribute window_position.



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# File 'lib/jared/buffer.rb', line 3

def window_position
  @window_position
end

Instance Method Details

#cursor(rows, columns) ⇒ Object 



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# File 'lib/jared/buffer.rb', line 19

def cursor(rows, columns)
  @cursor_row = [0, cursor_row + rows].max
  @cursor_column = [0, cursor_column + columns].max
end

#lines ⇒ Object 



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# File 'lib/jared/buffer.rb', line 14

def lines
  @lines ||= file.each_line.to_a
end