Class: Breaktime::Command

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

Overview

Used to determine and run the screensaver command.

Defined Under Namespace

Classes: OSUnknown

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(command, log) ⇒ Command

Store the command if specified, or determine the system default.



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# File 'lib/breaktime/command.rb', line 33

def initialize(command, log)
  @command = if command.nil?
    self.class.system_default(log)
  else
    log.debug { "User defined command: #{command}" }
    command
  end
end

Instance Attribute Details

#command ⇒ Object (readonly)

Returns the value of attribute command.



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# File 'lib/breaktime/command.rb', line 7

def command
  @command
end

Class Method Details

.system_default(log) ⇒ Object

Determine the default screensaver command based on the user’s OS.

If Linux, use the LinuxWinManager class to determine the appropriate command.



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# File 'lib/breaktime/command.rb', line 13

def self.system_default(log)
  case RbConfig::CONFIG['target_os']
  when 'linux'
    log.debug { "Using Linux, detecting window manager and appropriate command" }
    Breaktime::LinuxWinManager.detect_command(log)

  when 'darwin10'
    log.debug { "Using Mac OSX10" }
    'open -a /System/Library/Frameworks/ScreenSaver.framework/Versions/A/Resources/ScreenSaverEngine.app'

  when /(mswin|mingw).*$/
    log.debug { "Using Windows" }
    'rundll32.exe user32.dll,LockWorkStation'

  else
    raise OSUnknown, 'Unknown OS'
  end
end

Instance Method Details

#execute ⇒ Object

Execute the command with Kernel#exec.

This replaces the current process, exiting when the command exits.



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# File 'lib/breaktime/command.rb', line 45

def execute
  exec @command
end