Module: Gem::UserInteraction

Overview

UserInteraction allows RubyGems to interact with the user through standard methods that can be replaced with more-specific UI methods for different displays.

Since UserInteraction dispatches to a concrete UI class you may need to reference other classes for specific behavior such as Gem::ConsoleUI or Gem::SilentUI.

Example:

class X
  include Gem::UserInteraction

  def get_answer
    n = ask("What is the meaning of life?")
  end
end

Instance Method Summary collapse

Methods included from DefaultUserInteraction

ui, #ui, #ui=, ui=, use_ui, #use_ui

Methods included from Text

#clean_text, #format_text, #levenshtein_distance, #min3, #truncate_text

Instance Method Details

#alert(statement, question = nil) ⇒ Object

Displays an alert statement. Asks a question if given.


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# File 'lib/rubygems/user_interaction.rb', line 101

def alert(statement, question = nil)
  ui.alert statement, question
end

#alert_error(statement, question = nil) ⇒ Object

Displays an error statement to the error output location. Asks a question if given.


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# File 'lib/rubygems/user_interaction.rb', line 109

def alert_error(statement, question = nil)
  ui.alert_error statement, question
end

#alert_warning(statement, question = nil) ⇒ Object

Displays a warning statement to the warning output location. Asks a question if given.


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# File 'lib/rubygems/user_interaction.rb', line 117

def alert_warning(statement, question = nil)
  ui.alert_warning statement, question
end

#ask(question) ⇒ Object

Asks a question and returns the answer.


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# File 'lib/rubygems/user_interaction.rb', line 124

def ask(question)
  ui.ask question
end

#ask_for_password(prompt) ⇒ Object

Asks for a password with a prompt


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# File 'lib/rubygems/user_interaction.rb', line 131

def ask_for_password(prompt)
  ui.ask_for_password prompt
end

#ask_yes_no(question, default = nil) ⇒ Object

Asks a yes or no question. Returns true for yes, false for no.


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# File 'lib/rubygems/user_interaction.rb', line 138

def ask_yes_no(question, default = nil)
  ui.ask_yes_no question, default
end

#choose_from_list(question, list) ⇒ Object

Asks the user to answer question with an answer from the given list.


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# File 'lib/rubygems/user_interaction.rb', line 145

def choose_from_list(question, list)
  ui.choose_from_list question, list
end

#say(statement = '') ⇒ Object

Displays the given statement on the standard output (or equivalent).


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# File 'lib/rubygems/user_interaction.rb', line 152

def say(statement = '')
  ui.say statement
end

#terminate_interaction(exit_code = 0) ⇒ Object

Terminates the RubyGems process with the given exit_code


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# File 'lib/rubygems/user_interaction.rb', line 159

def terminate_interaction(exit_code = 0)
  ui.terminate_interaction exit_code
end

#verbose(msg = nil) ⇒ Object

Calls say with msg or the results of the block if really_verbose is true.


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# File 'lib/rubygems/user_interaction.rb', line 167

def verbose(msg = nil)
  say(clean_text(msg || yield)) if Gem.configuration.really_verbose
end