Class: Input

Inherits:
Object
  • Object
show all
Defined in:
lib/inquirer/prompts/input.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(question = nil, default = nil, renderer = nil, responseRenderer = nil) ⇒ Input

Returns a new instance of Input.



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# File 'lib/inquirer/prompts/input.rb', line 47

def initialize question = nil, default = nil, renderer = nil, responseRenderer = nil
  @question = question
  @value = ""
  @default = default
  @prompt = ""
  @pos = 0
  @renderer = renderer || InputDefault.new( Inquirer::Style::Default )
  @responseRenderer = responseRenderer = InputResponseDefault.new()
end

Class Method Details

.ask(question = nil, opts = {}) ⇒ Object 



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# File 'lib/inquirer/prompts/input.rb', line 125

def self.ask question = nil, opts = {}
  l = Input.new question, opts[:default], opts[:renderer], opts[:rendererResponse]
  l.run opts.fetch(:clear, true), opts.fetch(:response, true)
end

Instance Method Details

#run(clear, response) ⇒ Object

Run the list selection, wait for the user to select an item and return the selected index Params:

clear

Bool whether to clear the selection prompt once this is done

defaults to true; set it to false if you want the prompt to remain after
the user is done with selecting
response

Bool whether show the rendered response when this is done

defaults to true; set it to false if you want the prompt to remain after
the user is done with selecting



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# File 'lib/inquirer/prompts/input.rb', line 79

def run clear, response
  # render the
  IOHelper.render( update_prompt )
  # loop through user input
  # IOHelper.read_char
  IOHelper.read_key_while true do |key|
    raw  = IOHelper.char_to_raw(key)

    case raw
    when "backspace"
      @value = @value.chop
      IOHelper.rerender( update_prompt )
      update_cursor
    when "left"
      if @pos < @value.length
        @pos = @pos + 1
        print IOHelper.char_left
      end
    when "right"
      if @pos > 0
        @pos = @pos - 1
        print IOHelper.char_right
      end
    when "return"
      if not @default.nil? and @value == ""
        @value = @default
      end
    else
      unless ["up", "down"].include?(raw)
        @value = @value.insert(@value.length - @pos, key)
        IOHelper.rerender( update_prompt )
        update_cursor
      end
    end
    raw != "return"
  end
  # clear the final prompt and the line
  IOHelper.clear if clear

  # show the answer
  IOHelper.render( update_response ) if response

  # return the value
  @value
end

#update_cursor ⇒ Object 



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# File 'lib/inquirer/prompts/input.rb', line 66

def update_cursor
  print IOHelper.char_left * @pos
end

#update_prompt ⇒ Object 



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# File 'lib/inquirer/prompts/input.rb', line 57

def update_prompt
  # call the renderer
  @prompt = @renderer.render(@question, @value, @default)
end

#update_response ⇒ Object 



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# File 'lib/inquirer/prompts/input.rb', line 62

def update_response
  @prompt = @responseRenderer.renderResponse(@question, @value)
end