Class: JotaCurses

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

Instance Method Summary collapse

Constructor Details

#initialize ⇒ JotaCurses

Returns a new instance of JotaCurses.



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# File 'lib/jota_curses.rb', line 43

def initialize
  @data = nil

  @top_win_first = 0   # number of top clip in top window
  @bot_win_first = 0   # number of top line in bottom window

  @top_bar = nil
  @top_win = nil
  @mid_bar = nil
  @bot_win = nil
  @bot_bar = nil

  @mode = :normal
  @editor_running = false

        default_focus
end

Instance Method Details

#clip_array ⇒ Object 



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# File 'lib/jota_curses.rb', line 83

def clip_array
  return @data
end

#create(filename) ⇒ Object 



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# File 'lib/jota_curses.rb', line 87

def create(filename)
  begin
    new_data = ClipArray.create(filename)
        rescue AppError, SystemCallError => msg
                error(msg)
                return
  end

  if @data then
    @data.close
  end
  @data = new_data
  @data.current_index = 0
  @top_win_first = 0
  draw_bars
end

#delete ⇒ Object 



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# File 'lib/jota_curses.rb', line 105

def delete
  return if not @data

  return if not really?("confirm_delete","Really delete?")

  if @data.pref["deletesave_enable"] and not @data.current.empty? then
    deletefile = expand_filename(@data.pref["deletesave_file"],
            @data.dirname, @data.filename)
    begin
      @data.append(deletefile)
    rescue SystemCallError => msg
      error(msg)
      return
    end
  end

  @data.delete
end

#finish ⇒ Object 



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# File 'lib/jota_curses.rb', line 61

def finish
        Curses.close_screen
end

#get_bot_win_height ⇒ Object

Helper



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# File 'lib/jota_curses.rb', line 167

def get_bot_win_height
  rows = @lines - @top_win_height - 3

  # some error checking if the terminal window is made too small
  if rows < 3 then
    # first try to adjust the windows
    @top_win_height = @lines - 3 - 4
    if @top_win_height < 2 then
      # if it doesn't help, display an error
      @top_win_height = 2
      @top_bar.clear
      @top_bar.addstr("TOO SMALL")
      @top_bar.refresh

      @top_win.clear; @top_win.refresh
      @mid_bar.clear; @mid_bar.refresh
      @bot_win.clear; @bot_win.refresh
      @bot_bar.clear; @bot_bar.refresh
    end
    return 4
  else
    return rows
  end
end

#open(filename) ⇒ Object 



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# File 'lib/jota_curses.rb', line 65

def open(filename)
  begin
    new_data = ClipArray.open(filename)
  rescue AppError, SystemCallError => msg
                finish
                puts msg
    return nil
  end

  if @data then
    @data.close
  end
  @data = new_data
  @data.current_index = 0
  @top_win_first = 0
  return @data
end

#run ⇒ Object 



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# File 'lib/jota_curses.rb', line 124

def run
  Curses.init_screen
  Curses.cbreak
  Curses.noecho
  Curses.nonl

  set_terminal
  @top_win_height = @lines/2
  set_windows

  begin
    # set SIGgnal handler if terminal WINdow CHanged
    Signal.trap("SIGWINCH") do
      print_debug "terminal size changed"
      set_terminal
      # ruby 1.9 can't cope with curses initializing and closing in fast succession
      # and the "sleep" makes fast resizing smoother
      sleep 0.1
      if not @editor_running then
        set_windows
      end
    end
  rescue ArgumentError
    # for example with Windows
    print_verbose "Cannot set trap for 'SIGWINCH'"
  end

  draw_bars
  adjust_top_win_first
  adjust_bot_win_first
  loop do
    draw_top_window
    @bot_win_lines = draw_bottom_window
    handle_key
  end
end

#set_terminal ⇒ Object 



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# File 'lib/jota_curses.rb', line 34

def set_terminal
  Curses.close_screen
  Curses.init_screen
  Curses.stdscr.refresh
  @columns = Curses.stdscr.maxx
  @lines = Curses.stdscr.maxy
  print_debug "setting terminal: lines=#{@lines}, columns=#{@columns}"
end