Module: CLI::UI::Terminal

Defined in:
lib/cli/ui/terminal.rb

Constant Summary collapse

DEFAULT_WIDTH =
80
DEFAULT_HEIGHT =
24

Class Method Summary collapse

Class Method Details

.heightObject

Returns the width of the terminal, if possible Otherwise, will return DEFAULT_HEIGHT


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# File 'lib/cli/ui/terminal.rb', line 20

def self.height
  winsize[0]
end

.setup_winsize_trapObject


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# File 'lib/cli/ui/terminal.rb', line 39

def self.setup_winsize_trap
  @winsize_trap ||= Signal.trap('WINCH') do
    @winsize = nil
  end
end

.widthObject

Returns the width of the terminal, if possible Otherwise will return DEFAULT_WIDTH


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# File 'lib/cli/ui/terminal.rb', line 13

def self.width
  winsize[1]
end

.winsizeObject


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# File 'lib/cli/ui/terminal.rb', line 24

def self.winsize
  @winsize ||= begin
                 winsize = IO.console.winsize
                 setup_winsize_trap

                 if winsize.any?(&:zero?)
                   [DEFAULT_HEIGHT, DEFAULT_WIDTH]
                 else
                   winsize
                 end
               rescue
                 [DEFAULT_HEIGHT, DEFAULT_WIDTH]
               end
end