Class: OverrideDlg

Inherits:
Object
  • Object
show all
Includes:
BasicLogging
Defined in:
lib/override.rb

Constant Summary collapse

XTERM = 
'xterm'
@@Executables =

There used to be others, but only xterm remained.

[XTERM]
@@LIBDIR = 
File::dirname(__FILE__)

Constants included from BasicLogging

BasicLogging::DEBUG, BasicLogging::ERROR, BasicLogging::FATAL, BasicLogging::INFO, BasicLogging::Levels, BasicLogging::UNKNOWN, BasicLogging::WARN

Class Attribute Summary collapse

Instance Method Summary collapse

Methods included from BasicLogging

#clear_log, is_muted?, #level, #log, #log_name, mute, #set_level, #set_target, #target

Constructor Details

#initialize ⇒ OverrideDlg

Create the object



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# File 'lib/override.rb', line 50

def initialize
  @config = Configuration::instance
  # find the supported programs 
  @executables = @@Executables.select do |ex_name|
    program?(ex_name) 
  end
  # As we are calling external programs anyway, 
  # why not continue with that ...
  @xmsg = ENV['PATH'].split(':').any? {|d| Dir.children(d).include?('xmessage')}
  # bof.
end

Class Attribute Details

.cvars ⇒ Object (readonly)

Returns the value of attribute cvars.



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# File 'lib/override.rb', line 45

def cvars
  @cvars
end

Instance Method Details

#show ⇒ Object

display a dialog and return the new options.



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# File 'lib/override.rb', line 63

def show
  if(@executables && !@executables.empty?)
    debug('found executables ' << @executables.join(', '))
    opts = nil
    begin
      if has? XTERM
        return ruby_dlg
      end
    rescue SystemExit
      msg = 'Process is cancelled (SystemExit)'
      info msg
      exit true
    rescue Exception => ex
      msg = 'Error upon showing dialog ' << ex.message
      error(msg)
    end
  # no program to show the dialog 
  else 
    msg = "#{File.basename($0)}: No suitable executable found to display the dialog"
    warn msg
    # if xmessage is available, give the user a last chance.
    if @xmsg
      io = IO.popen('xmessage -buttons continue:0,abort:1 -default abort -print ' << msg) 
      Process.wait(io.pid)
      # ATTN! read io only once!
      exit if ('continue' != io.read.to_s.strip )
      # ... but then again, we still have a log.
      debug('continue with configured settings')
    end
  end
end