7 yield self if block_given?
10 def keysym_to_keycode k
12 when :down: Curses::KEY_DOWN
13 when :up: Curses::KEY_UP
14 when :left: Curses::KEY_LEFT
15 when :right: Curses::KEY_RIGHT
16 when :page_down: Curses::KEY_NPAGE
17 when :page_up: Curses::KEY_PPAGE
18 when :backspace: Curses::KEY_BACKSPACE
19 when :home: Curses::KEY_HOME
20 when :end: Curses::KEY_END
24 when :enter, :return: 10 #Curses::KEY_ENTER
26 if k.is_a?(String) && k.length == 1
29 raise ArgumentError, "unknown key name '#{k}'"
34 def keysym_to_string k
36 when :down: "<down arrow>"
37 when :up: "<up arrow>"
38 when :left: "<left arrow>"
39 when :right: "<right arrow>"
40 when :page_down: "<page down>"
41 when :page_up: "<page up>"
42 when :backspace: "<backspace>"
45 when :enter, :return: "<enter>"
46 when :ctrl_l: "ctrl-l"
47 when :ctrl_g: "ctrl-g"
51 if k.is_a?(String) && k.length == 1
54 raise ArgumentError, "unknown key name \"#{k}\""
59 def add action, help, *keys
60 entry = [action, help, keys]
63 raise ArgumentError, "key #{k} already defined (action #{action})" if @map.include? k
64 kc = keysym_to_keycode k
70 action, help, keys = @map[kc]
74 def keysyms; @map.values.map { |action, help, keys| keys }.flatten; end
76 def help_text except_for={}
77 lines = @order.map do |action, help, keys|
78 valid_keys = keys.select { |k| !except_for[k] }
79 next if valid_keys.empty?
80 [valid_keys.map { |k| keysym_to_string k }.join(", "), help]
82 llen = lines.max_of { |a, b| a.length }
83 lines.map { |a, b| sprintf " %#{llen}s : %s", a, b }.join("\n")