Module: Roebe::BlinkingCursor

Defined in:
lib/roebe/toplevel_methods/blinking_cursor.rb

Constant Summary collapse

B =
#

B

This is actually the “backspace” character, so the whole “blinking” effect is nothing but repositioning the cursor backwards.

#
"\b"

Class Method Summary collapse

Class Method Details

.backspace_twice ⇒ Object

#

Roebe::BlinkingCursor.backspace_twice

#


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# File 'lib/roebe/toplevel_methods/blinking_cursor.rb', line 47

def self.backspace_twice
  print "#{B}#{B}"
end

.blink ⇒ Object

#

This is the method that can be used to blink.

#


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# File 'lib/roebe/toplevel_methods/blinking_cursor.rb', line 56

def self.blink
  loop {
    # ====================================================================== #
    # Show the first prompt-type next:
    # ====================================================================== #
    print '> '
    default_sleep
    backspace_twice
    # ====================================================================== #
    # Show the other prompt-type next:
    # ====================================================================== #
    print '  '
    default_sleep
    backspace_twice
    # user_input = $stdin.gets.chomp
    # break if user_input.size > 0
  }
end

.default_sleep(i = 0.5) ⇒ Object

#

Roebe::BlinkingCursor.default_sleep

#


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# File 'lib/roebe/toplevel_methods/blinking_cursor.rb', line 35

def self.default_sleep(i = 0.5)
  begin
    sleep(i)
  rescue Interrupt
    puts # Make a proper newline, on-exit.
    exit
  end
end