Module: CLI::UI::Terminal

Extended by:
T::Sig
Defined in:
lib/cli/ui/terminal.rb

Constant Summary collapse

DEFAULT_WIDTH = 
80
DEFAULT_HEIGHT = 
24

Class Method Summary collapse

Methods included from T::Sig

sig

Class Method Details

.height ⇒ Object 


26
27
28
 
# File 'lib/cli/ui/terminal.rb', line 26

def self.height
  winsize[0]
end

.setup_winsize_trap ⇒ Object 


47
48
49
50
51
 
# File 'lib/cli/ui/terminal.rb', line 47

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

.width ⇒ Object 


18
19
20
 
# File 'lib/cli/ui/terminal.rb', line 18

def self.width
  winsize[1]
end

.winsize ⇒ Object 


31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/cli/ui/terminal.rb', line 31

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