Support for the Ruby 2.1 series ended on March 31 2017. See here for details.
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
Displays an alert statement
. Asks a question
if
given.
# File rubygems/user_interaction.rb, line 99 def alert statement, question = nil ui.alert statement, question end
Displays an error statement
to the error output location.
Asks a question
if given.
# File rubygems/user_interaction.rb, line 107 def alert_error statement, question = nil ui.alert_error statement, question end
Displays a warning statement
to the warning output location.
Asks a question
if given.
# File rubygems/user_interaction.rb, line 115 def alert_warning statement, question = nil ui.alert_warning statement, question end
Asks a question
and returns the answer.
# File rubygems/user_interaction.rb, line 122 def ask question ui.ask question end
Asks for a password with a prompt
# File rubygems/user_interaction.rb, line 129 def ask_for_password prompt ui.ask_for_password prompt end
Asks a yes or no question
. Returns true for yes, false for
no.
# File rubygems/user_interaction.rb, line 136 def ask_yes_no question, default = nil ui.ask_yes_no question, default end
Asks the user to answer question
with an answer from the given
list
.
# File rubygems/user_interaction.rb, line 143 def choose_from_list question, list ui.choose_from_list question, list end