9 stdscr.getmaxyx lame, lamer
15 stdscr.getmaxyx lame, lamer
21 stdscr.getyx lame, lamer
25 def mutex; @mutex ||= Mutex.new; end
26 def sync &b; mutex.synchronize(&b); end
28 ## magically, this stuff seems to work now. i could swear it didn't
31 if IO.select([$stdin], nil, nil, 1)
38 module_function :rows, :cols, :curx, :nonblocking_getch, :mutex, :sync
40 remove_const :KEY_ENTER
41 remove_const :KEY_CANCEL
44 KEY_CANCEL = 7 # ctrl-g
51 class InputSequenceAborted < StandardError; end
54 attr_reader :mode, :x, :y, :width, :height, :title
56 bool_accessor :force_to_top
58 def initialize window, mode, width, height, opts={}
63 @title = opts[:title] || ""
64 @force_to_top = opts[:force_to_top] || false
65 @x, @y, @width, @height = 0, 0, width, height
68 def content_height; @height - 1; end
69 def content_width; @width; end
72 return if cols == @width && rows == @height
76 mode.resize rows, cols
89 def mark_dirty; @dirty = true; end
102 ## s nil means a blank line!
103 def write y, x, s, opts={}
104 return if x >= @width || y >= @height
106 @w.attrset Colormap.color_for(opts[:color] || :none, opts[:highlight])
109 @w.mvaddstr y, x, s[0 ... maxl]
110 unless s.length >= maxl || opts[:no_fill]
111 @w.mvaddstr(y, x + s.length, " " * (maxl - s.length))
119 def draw_status status
120 write @height - 1, 0, status, :color => :status_color
139 attr_reader :focus_buf
141 ## we have to define the key used to continue in-buffer search here, because
142 ## it has special semantics that BufferManager deals with---current searches
143 ## are canceled by any keypress except this one.
144 CONTINUE_IN_BUFFER_SEARCH_KEY = "n"
146 HookManager.register "status-bar-text", <<EOS
147 Sets the status bar. The default status bar contains the mode name, the buffer
148 title, and the mode status. Note that this will be called at least once per
149 keystroke, so excessive computation is discouraged.
152 num_inbox: number of messages in inbox
153 num_inbox_unread: total number of messages marked as unread
154 num_total: total number of messages in the index
155 num_spam: total number of messages marked as spam
156 title: title of the current buffer
157 mode: current mode name (string)
158 status: current mode status (string)
159 Return value: a string to be used as the status bar.
162 HookManager.register "terminal-title-text", <<EOS
163 Sets the title of the current terminal, if applicable. Note that this will be
164 called at least once per keystroke, so excessive computation is discouraged.
166 Variables: the same as status-bar-text hook.
167 Return value: a string to be used as the terminal title.
170 HookManager.register "extra-contact-addresses", <<EOS
171 A list of extra addresses to propose for tab completion, etc. when the
172 user is entering an email address. Can be plain email addresses or can
173 be full "User Name <email@domain.tld>" entries.
176 Return value: an array of email address strings.
185 @minibuf_mutex = Mutex.new
188 @shelled = @asking = false
189 @in_x = ENV["TERM"] =~ /(xterm|rxvt|screen)/
191 self.class.i_am_the_instance self
194 def buffers; @name_map.to_a; end
197 return unless @buffers.member? buf
198 return if buf == @focus_buf
199 @focus_buf.blur if @focus_buf
204 def raise_to_front buf
205 @buffers.delete(buf) or return
206 if @buffers.length > 0 && @buffers.last.force_to_top?
207 @buffers.insert(-2, buf)
211 focus_on @buffers.last
215 ## we reset force_to_top when rolling buffers. this is so that the
216 ## human can actually still move buffers around, while still
217 ## programmatically being able to pop stuff up in the middle of
218 ## drawing a window without worrying about covering it up.
220 ## if we ever start calling roll_buffers programmatically, we will
221 ## have to change this. but it's not clear that we will ever actually
224 @buffers.last.force_to_top = false
225 raise_to_front @buffers.first
228 def roll_buffers_backwards
229 return unless @buffers.length > 1
230 @buffers.last.force_to_top = false
231 raise_to_front @buffers[@buffers.length - 2]
236 if @focus_buf.mode.in_search? && c != CONTINUE_IN_BUFFER_SEARCH_KEY[0]
237 @focus_buf.mode.cancel_search!
238 @focus_buf.mark_dirty
240 @focus_buf.mode.handle_input c
244 def exists? n; @name_map.member? n; end
245 def [] n; @name_map[n]; end
247 raise ArgumentError, "duplicate buffer name" if b && @name_map.member?(n)
248 raise ArgumentError, "title must be a string" unless n.is_a? String
252 def completely_redraw_screen
255 status, title = get_status_and_title(@focus_buf) # must be called outside of the ncurses lock
260 draw_screen :sync => false, :status => status, :title => title
264 def draw_screen opts={}
268 if opts.member? :status
269 [opts[:status], opts[:title]]
271 raise "status must be supplied if draw_screen is called within a sync" if opts[:sync] == false
272 get_status_and_title @focus_buf # must be called outside of the ncurses lock
275 ## http://rtfm.etla.org/xterm/ctlseq.html (see Operating System Controls)
276 print "\033]0;#{title}\07" if title && @in_x
278 Ncurses.mutex.lock unless opts[:sync] == false
280 ## disabling this for the time being, to help with debugging
281 ## (currently we only have one buffer visible at a time).
282 ## TODO: reenable this if we allow multiple buffers
283 false && @buffers.inject(@dirty) do |dirty, buf|
284 buf.resize Ncurses.rows - minibuf_lines, Ncurses.cols
285 #dirty ? buf.draw : buf.redraw
293 buf.resize Ncurses.rows - minibuf_lines, Ncurses.cols
294 @dirty ? buf.draw(status) : buf.redraw(status)
297 draw_minibuf :sync => false unless opts[:skip_minibuf]
301 Ncurses.refresh if opts[:refresh]
302 Ncurses.mutex.unlock unless opts[:sync] == false
305 ## if the named buffer already exists, pops it to the front without
306 ## calling the block. otherwise, gets the mode from the block and
307 ## creates a new buffer. returns two things: the buffer, and a boolean
308 ## indicating whether it's a new buffer or not.
309 def spawn_unless_exists title, opts={}
311 if @name_map.member? title
312 raise_to_front @name_map[title] unless opts[:hidden]
316 spawn title, mode, opts
319 [@name_map[title], new]
322 def spawn title, mode, opts={}
323 raise ArgumentError, "title must be a string" unless title.is_a? String
326 while @name_map.member? realtitle
327 realtitle = "#{title} <#{num}>"
331 width = opts[:width] || Ncurses.cols
332 height = opts[:height] || Ncurses.rows - 1
334 ## since we are currently only doing multiple full-screen modes,
335 ## use stdscr for each window. once we become more sophisticated,
336 ## we may need to use a new Ncurses::WINDOW
338 ## w = Ncurses::WINDOW.new(height, width, (opts[:top] || 0),
339 ## (opts[:left] || 0))
341 b = Buffer.new w, mode, width, height, :title => realtitle, :force_to_top => (opts[:force_to_top] || false)
343 @name_map[realtitle] = b
347 focus_on b unless @focus_buf
354 ## requires the mode to have #done? and #value methods
355 def spawn_modal title, mode, opts={}
356 b = spawn title, mode, opts
360 c = Ncurses.nonblocking_getch
361 next unless c # getch timeout
362 break if c == Ncurses::KEY_CANCEL
365 rescue InputSequenceAborted # do nothing
375 def kill_all_buffers_safely
376 until @buffers.empty?
377 ## inbox mode always claims it's unkillable. we'll ignore it.
378 return false unless @buffers.last.mode.is_a?(InboxMode) || @buffers.last.mode.killable?
379 kill_buffer @buffers.last
384 def kill_buffer_safely buf
385 return false unless buf.mode.killable?
391 kill_buffer @buffers.first until @buffers.empty?
395 raise ArgumentError, "buffer not on stack: #{buf}: #{buf.title.inspect}" unless @buffers.member? buf
399 @name_map.delete buf.title
400 @focus_buf = nil if @focus_buf == buf
402 ## TODO: something intelligent here
403 ## for now I will simply prohibit killing the inbox buffer.
405 raise_to_front @buffers.last
409 def ask_with_completions domain, question, completions, default=nil
410 ask domain, question, default do |s|
411 completions.select { |x| x =~ /^#{Regexp::escape s}/i }.map { |x| [x, x] }
415 def ask_many_with_completions domain, question, completions, default=nil
416 ask domain, question, default do |partial|
421 when /^(.*\s+)?(.*?)$/
424 raise "william screwed up completion: #{partial.inspect}"
427 completions.select { |x| x =~ /^#{Regexp::escape target}/i }.map { |x| [prefix + x, x] }
431 def ask_many_emails_with_completions domain, question, completions, default=nil
432 ask domain, question, default do |partial|
433 prefix, target = partial.split_on_commas_with_remainder
434 target ||= prefix.pop || ""
435 prefix = prefix.join(", ") + (prefix.empty? ? "" : ", ")
436 completions.select { |x| x =~ /^#{Regexp::escape target}/i }.map { |x| [prefix + x, x] }
440 def ask_for_filename domain, question, default=nil
441 answer = ask domain, question, default do |s|
442 if s =~ /(~([^\s\/]*))/ # twiddle directory expansion
444 name = $2.empty? ? Etc.getlogin : $2
445 dir = Etc.getpwnam(name).dir rescue nil
447 [[s.sub(full, dir), "~#{name}"]]
449 users.select { |u| u =~ /^#{Regexp::escape name}/ }.map do |u|
450 [s.sub("~#{name}", "~#{u}"), "~#{u}"]
453 else # regular filename completion
454 Dir["#{s}*"].sort.map do |fn|
455 suffix = File.directory?(fn) ? "/" : ""
456 [fn + suffix, File.basename(fn) + suffix]
464 spawn_modal "file browser", FileBrowserMode.new
465 elsif File.directory?(answer)
466 spawn_modal "file browser", FileBrowserMode.new(answer)
468 File.expand_path answer
475 ## returns an array of labels
476 def ask_for_labels domain, question, default_labels, forbidden_labels=[]
477 default_labels = default_labels - forbidden_labels - LabelManager::RESERVED_LABELS
478 default = default_labels.join(" ")
479 default += " " unless default.empty?
481 applyable_labels = (LabelManager.applyable_labels - forbidden_labels).map { |l| LabelManager.string_for l }.sort_by { |s| s.downcase }
483 answer = ask_many_with_completions domain, question, applyable_labels, default
487 user_labels = answer.split(/\s+/).map { |l| l.intern }
488 user_labels.each do |l|
489 if forbidden_labels.include?(l) || LabelManager::RESERVED_LABELS.include?(l)
490 BufferManager.flash "'#{l}' is a reserved label!"
497 def ask_for_contacts domain, question, default_contacts=[]
498 default = default_contacts.map { |s| s.to_s }.join(" ")
499 default += " " unless default.empty?
501 recent = Index.load_contacts(AccountManager.user_emails, :num => 10).map { |c| [c.full_address, c.email] }
502 contacts = ContactManager.contacts.map { |c| [ContactManager.alias_for(c), c.full_address, c.email] }
504 completions = (recent + contacts).flatten.uniq.sort
505 completions += HookManager.run("extra-contact-addresses") || []
506 answer = BufferManager.ask_many_emails_with_completions domain, question, completions, default
509 answer.split_on_commas.map { |x| ContactManager.contact_for(x.downcase) || PersonManager.person_for(x) }
513 ## for simplicitly, we always place the question at the very bottom of the
515 def ask domain, question, default=nil, &block
516 raise "impossible!" if @asking
519 @textfields[domain] ||= TextField.new
520 tf = @textfields[domain]
523 status, title = get_status_and_title @focus_buf
526 tf.activate Ncurses.stdscr, Ncurses.rows - 1, 0, Ncurses.cols, question, default, &block
527 @dirty = true # for some reason that blanks the whole fucking screen
528 draw_screen :sync => false, :status => status, :title => title
534 c = Ncurses.nonblocking_getch
535 next unless c # getch timeout
536 break unless tf.handle_input c # process keystroke
538 if tf.new_completions?
539 kill_buffer completion_buf if completion_buf
541 shorts = tf.completions.map { |full, short| short }
542 prefix_len = shorts.shared_prefix.length
544 mode = CompletionMode.new shorts, :header => "Possible completions for \"#{tf.value}\": ", :prefix_len => prefix_len
545 completion_buf = spawn "<completions>", mode, :height => 10
547 draw_screen :skip_minibuf => true
549 elsif tf.roll_completions?
550 completion_buf.mode.roll
551 draw_screen :skip_minibuf => true
555 Ncurses.sync { Ncurses.refresh }
558 kill_buffer completion_buf if completion_buf
564 draw_screen :sync => false, :status => status, :title => title
569 def ask_getch question, accept=nil
570 raise "impossible!" if @asking
572 accept = accept.split(//).map { |x| x[0] } if accept
574 status, title = get_status_and_title @focus_buf
576 draw_screen :sync => false, :status => status, :title => title
577 Ncurses.mvaddstr Ncurses.rows - 1, 0, question
578 Ncurses.move Ncurses.rows - 1, question.length + 1
587 key = Ncurses.nonblocking_getch or next
588 if key == Ncurses::KEY_CANCEL
590 elsif accept.nil? || accept.empty? || accept.member?(key)
599 draw_screen :sync => false, :status => status, :title => title
605 ## returns true (y), false (n), or nil (ctrl-g / cancel)
606 def ask_yes_or_no question
607 case(r = ask_getch question, "ynYN")
617 ## turns an input keystroke into an action symbol. returns the action
618 ## if found, nil if not found, and throws InputSequenceAborted if
619 ## the user aborted a multi-key sequence. (Because each of those cases
620 ## should be handled differently.)
622 ## this is in BufferManager because multi-key sequences require prompting.
623 def resolve_input_with_keymap c, keymap
624 action, text = keymap.action_for c
625 while action.is_a? Keymap # multi-key commands, prompt
626 key = BufferManager.ask_getch text
627 unless key # user canceled, abort
629 raise InputSequenceAborted
631 action, text = action.action_for(key) if action.has_key?(key)
637 @minibuf_mutex.synchronize do
640 @minibuf_stack.compact.size, 1].max
644 def draw_minibuf opts={}
646 @minibuf_mutex.synchronize do
647 m = @minibuf_stack.compact
648 m << @flash if @flash
649 m << "" if m.empty? unless @asking # to clear it
652 Ncurses.mutex.lock unless opts[:sync] == false
653 Ncurses.attrset Colormap.color_for(:none)
654 adj = @asking ? 2 : 1
655 m.each_with_index do |s, i|
656 Ncurses.mvaddstr Ncurses.rows - i - adj, 0, s + (" " * [Ncurses.cols - s.length, 0].max)
658 Ncurses.refresh if opts[:refresh]
659 Ncurses.mutex.unlock unless opts[:sync] == false
665 @minibuf_mutex.synchronize do
667 id ||= @minibuf_stack.length
668 @minibuf_stack[id] = s
672 draw_screen :refresh => true
674 draw_minibuf :refresh => true
687 def erase_flash; @flash = nil; end
691 draw_screen :refresh => true
694 ## a little tricky because we can't just delete_at id because ids
695 ## are relative (they're positions into the array).
697 @minibuf_mutex.synchronize do
698 @minibuf_stack[id] = nil
699 if id == @minibuf_stack.length - 1
701 break if @minibuf_stack[i]
702 @minibuf_stack.delete_at i
707 draw_screen :refresh => true
710 def shell_out command
722 def default_status_bar buf
723 " [#{buf.mode.name}] #{buf.title} #{buf.mode.status}"
726 def default_terminal_title buf
727 "Sup #{Redwood::VERSION} :: #{buf.title}"
730 def get_status_and_title buf
732 :num_inbox => lambda { Index.num_results_for :label => :inbox },
733 :num_inbox_unread => lambda { Index.num_results_for :labels => [:inbox, :unread] },
734 :num_total => lambda { Index.size },
735 :num_spam => lambda { Index.num_results_for :label => :spam },
737 :mode => buf.mode.name,
738 :status => buf.mode.status
741 statusbar_text = HookManager.run("status-bar-text", opts) || default_status_bar(buf)
742 term_title_text = HookManager.run("terminal-title-text", opts) || default_terminal_title(buf)
744 [statusbar_text, term_title_text]
750 while(u = Etc.getpwent)