Class: Minesweeper::Console::PrettyPrinter::HeaderPrinter

Inherits:
Object
  • Object
show all
Defined in:
lib/minesweeper/console/prettyprinter/header_printer.rb

Instance Method Summary collapse

Constructor Details

#initialize(separator, theme) ⇒ HeaderPrinter

Returns a new instance of HeaderPrinter.

Raises:

  • (ArgumentError) 


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# File 'lib/minesweeper/console/prettyprinter/header_printer.rb', line 5

def initialize(separator, theme)
  raise ArgumentError if separator.nil? || theme.nil?
  @separator = separator
  @theme = theme
end

Instance Method Details

#compute_column_width_for(number_of_columns) ⇒ Object 



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# File 'lib/minesweeper/console/prettyprinter/header_printer.rb', line 25

def compute_column_width_for(number_of_columns)
  (number_of_columns - 1).to_s.length
end

#print(number_of_columns) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/minesweeper/console/prettyprinter/header_printer.rb', line 11

def print(number_of_columns)
  raise ArgumentError if number_of_columns <= 0
  column_width = compute_column_width_for(number_of_columns)
  result = ' ' * column_width
  result << @theme.colorize_separator(@separator)
  number_of_columns.times do |i|
    column_header = @theme.colorize_header(i.to_s)
    column_header.prepend(' ' * (column_width - i.to_s.length))
    result << column_header
    result << @theme.colorize_separator(@separator)
  end
  result
end