7 yield self if block_given?
10 def self.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 self.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 kc = Keymap.keysym_to_keycode k
64 raise ArgumentError, "key '#{k}' already defined (as #{@map[kc].first})" if @map.include? kc
69 def add_multi prompt, key
71 add submap, prompt, key
76 action, help, keys = @map[kc]
80 def has_key? k; @map[k] end
82 def keysyms; @map.values.map { |action, help, keys| keys }.flatten; end
84 def help_lines except_for={}, prefix=""
86 @order.each do |action, help, keys|
87 valid_keys = keys.select { |k| !except_for[k] }
88 next if valid_keys.empty?
91 lines << [valid_keys.map { |k| prefix + Keymap.keysym_to_string(k) }.join(", "), help]
93 lines += action.help_lines({}, prefix + Keymap.keysym_to_string(keys.first))
99 def help_text except_for={}
100 lines = help_lines except_for
101 llen = lines.max_of { |a, b| a.length }
102 lines.map { |a, b| sprintf " %#{llen}s : %s", a, b }.join("\n")