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