Class: RubyText::Window::GetString

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

Instance Method Summary collapse

Constructor Details

#initialize(win = STDSCR, str = "", i = 0, history: [], limit: nil) ⇒ GetString

Returns a new instance of GetString.

Raises:

  • (ArgumentError) 


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# File 'lib/output.rb', line 142

def initialize(win = STDSCR, str = "", i = 0, history: [], limit: nil)
  @win = win
  @r0, @c0 = @win.rc
  @limit = limit || (@win.cols - @r0 - 1)
  raise ArgumentError unless @limit.is_a?(Numeric)
  @str, @i = str[0..(@limit-1)], i
  @win.print @str
  @win.left @str.length
  @history = history
  @h = @history.length - 1
  @maxlen = 0    # longest string in history
end

Instance Method Details

#add(ch) ⇒ Object 



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# File 'lib/output.rb', line 208

def add(ch)
  if @str.length >= @limit
    Curses.beep
    return
  end
  @str.insert(@i, ch)
  @win.right
  @win.go(@r0, @c0) { @win.print @str }
  @i += 1
end

#backspace ⇒ Object 



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# File 'lib/output.rb', line 175

def backspace
  # remember: may be in middle of string
  return if @i == 0
  @i -= 1
  @str[@i] = ""
  @win.left
  @win.rcprint @r0, @c0, @str + " "
end

#enter ⇒ Object 



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# File 'lib/output.rb', line 155

def enter
  @win.crlf
  @history << @str
  @h = @history.length - 1
end

#history_next ⇒ Object 



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# File 'lib/output.rb', line 196

def history_next
  return if @history.empty?
  @h = (@h + 1) % @history.length
  @win.go @r0, @c0
  @maxlen = @history.map(&:length).max
  @win.print(" "*@maxlen)
  @str = @history[@h]
  @i = @str.length
  @win.go @r0, @c0
  @win.print @str
end

#history_prev ⇒ Object 



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# File 'lib/output.rb', line 184

def history_prev
  return if @history.empty?
  @win.go @r0, @c0
  @maxlen = @history.map(&:length).max
  @win.print(" "*@maxlen)
  @h = (@h - 1) % @history.length
  @str = @history[@h]
  @i = @str.length
  @win.go @r0, @c0
  @win.print @str
end

#left_arrow ⇒ Object 



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# File 'lib/output.rb', line 161

def left_arrow
  if @i > 0
    @i -= 1
    @win.left
  end
end

#right_arrow ⇒ Object 



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# File 'lib/output.rb', line 168

def right_arrow
  if @i < @str.length
    @i += 1
    @win.right
  end
end

#value ⇒ Object 



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# File 'lib/output.rb', line 219

def value
  @str
end