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.
176 @minibuf_mutex = Mutex.new
179 @shelled = @asking = false
180 @in_x = ENV["TERM"] =~ /(xterm|rxvt|screen)/
182 self.class.i_am_the_instance self
185 def buffers; @name_map.to_a; end
188 return unless @buffers.member? buf
189 return if buf == @focus_buf
190 @focus_buf.blur if @focus_buf
195 def raise_to_front buf
196 @buffers.delete(buf) or return
197 if @buffers.length > 0 && @buffers.last.force_to_top?
198 @buffers.insert(-2, buf)
202 focus_on @buffers.last
206 ## we reset force_to_top when rolling buffers. this is so that the
207 ## human can actually still move buffers around, while still
208 ## programmatically being able to pop stuff up in the middle of
209 ## drawing a window without worrying about covering it up.
211 ## if we ever start calling roll_buffers programmatically, we will
212 ## have to change this. but it's not clear that we will ever actually
215 @buffers.last.force_to_top = false
216 raise_to_front @buffers.first
219 def roll_buffers_backwards
220 return unless @buffers.length > 1
221 @buffers.last.force_to_top = false
222 raise_to_front @buffers[@buffers.length - 2]
227 if @focus_buf.mode.in_search? && c != CONTINUE_IN_BUFFER_SEARCH_KEY[0]
228 @focus_buf.mode.cancel_search!
229 @focus_buf.mark_dirty
231 @focus_buf.mode.handle_input c
235 def exists? n; @name_map.member? n; end
236 def [] n; @name_map[n]; end
238 raise ArgumentError, "duplicate buffer name" if b && @name_map.member?(n)
239 raise ArgumentError, "title must be a string" unless n.is_a? String
243 def completely_redraw_screen
246 status, title = get_status_and_title(@focus_buf) # must be called outside of the ncurses lock
251 draw_screen :sync => false, :status => status, :title => title
255 def draw_screen opts={}
259 if opts.member? :status
260 [opts[:status], opts[:title]]
262 raise "status must be supplied if draw_screen is called within a sync" if opts[:sync] == false
263 get_status_and_title @focus_buf # must be called outside of the ncurses lock
266 print "\033]2;#{title}\07" if title && @in_x
268 Ncurses.mutex.lock unless opts[:sync] == false
270 ## disabling this for the time being, to help with debugging
271 ## (currently we only have one buffer visible at a time).
272 ## TODO: reenable this if we allow multiple buffers
273 false && @buffers.inject(@dirty) do |dirty, buf|
274 buf.resize Ncurses.rows - minibuf_lines, Ncurses.cols
275 #dirty ? buf.draw : buf.redraw
283 buf.resize Ncurses.rows - minibuf_lines, Ncurses.cols
284 @dirty ? buf.draw(status) : buf.redraw(status)
287 draw_minibuf :sync => false unless opts[:skip_minibuf]
291 Ncurses.refresh if opts[:refresh]
292 Ncurses.mutex.unlock unless opts[:sync] == false
295 ## if the named buffer already exists, pops it to the front without
296 ## calling the block. otherwise, gets the mode from the block and
297 ## creates a new buffer. returns two things: the buffer, and a boolean
298 ## indicating whether it's a new buffer or not.
299 def spawn_unless_exists title, opts={}
301 if @name_map.member? title
302 raise_to_front @name_map[title] unless opts[:hidden]
306 spawn title, mode, opts
309 [@name_map[title], new]
312 def spawn title, mode, opts={}
313 raise ArgumentError, "title must be a string" unless title.is_a? String
316 while @name_map.member? realtitle
317 realtitle = "#{title} <#{num}>"
321 width = opts[:width] || Ncurses.cols
322 height = opts[:height] || Ncurses.rows - 1
324 ## since we are currently only doing multiple full-screen modes,
325 ## use stdscr for each window. once we become more sophisticated,
326 ## we may need to use a new Ncurses::WINDOW
328 ## w = Ncurses::WINDOW.new(height, width, (opts[:top] || 0),
329 ## (opts[:left] || 0))
331 b = Buffer.new w, mode, width, height, :title => realtitle, :force_to_top => (opts[:force_to_top] || false)
333 @name_map[realtitle] = b
337 focus_on b unless @focus_buf
344 ## requires the mode to have #done? and #value methods
345 def spawn_modal title, mode, opts={}
346 b = spawn title, mode, opts
350 c = Ncurses.nonblocking_getch
351 next unless c # getch timeout
352 break if c == Ncurses::KEY_CANCEL
355 rescue InputSequenceAborted # do nothing
365 def kill_all_buffers_safely
366 until @buffers.empty?
367 ## inbox mode always claims it's unkillable. we'll ignore it.
368 return false unless @buffers.last.mode.is_a?(InboxMode) || @buffers.last.mode.killable?
369 kill_buffer @buffers.last
374 def kill_buffer_safely buf
375 return false unless buf.mode.killable?
381 kill_buffer @buffers.first until @buffers.empty?
385 raise ArgumentError, "buffer not on stack: #{buf}: #{buf.title.inspect}" unless @buffers.member? buf
389 @name_map.delete buf.title
390 @focus_buf = nil if @focus_buf == buf
392 ## TODO: something intelligent here
393 ## for now I will simply prohibit killing the inbox buffer.
395 raise_to_front @buffers.last
399 def ask_with_completions domain, question, completions, default=nil
400 ask domain, question, default do |s|
401 completions.select { |x| x =~ /^#{Regexp::escape s}/i }.map { |x| [x, x] }
405 def ask_many_with_completions domain, question, completions, default=nil
406 ask domain, question, default do |partial|
411 when /^(.*\s+)?(.*?)$/
414 raise "william screwed up completion: #{partial.inspect}"
417 completions.select { |x| x =~ /^#{Regexp::escape target}/i }.map { |x| [prefix + x, x] }
421 def ask_many_emails_with_completions domain, question, completions, default=nil
422 ask domain, question, default do |partial|
423 prefix, target = partial.split_on_commas_with_remainder
424 target ||= prefix.pop || ""
425 prefix = prefix.join(", ") + (prefix.empty? ? "" : ", ")
426 completions.select { |x| x =~ /^#{Regexp::escape target}/i }.map { |x| [prefix + x, x] }
430 def ask_for_filename domain, question, default=nil
431 answer = ask domain, question, default do |s|
432 if s =~ /(~([^\s\/]*))/ # twiddle directory expansion
434 name = $2.empty? ? Etc.getlogin : $2
435 dir = Etc.getpwnam(name).dir rescue nil
437 [[s.sub(full, dir), "~#{name}"]]
439 users.select { |u| u =~ /^#{Regexp::escape name}/ }.map do |u|
440 [s.sub("~#{name}", "~#{u}"), "~#{u}"]
443 else # regular filename completion
444 Dir["#{s}*"].sort.map do |fn|
445 suffix = File.directory?(fn) ? "/" : ""
446 [fn + suffix, File.basename(fn) + suffix]
454 spawn_modal "file browser", FileBrowserMode.new
455 elsif File.directory?(answer)
456 spawn_modal "file browser", FileBrowserMode.new(answer)
458 File.expand_path answer
465 ## returns an array of labels
466 def ask_for_labels domain, question, default_labels, forbidden_labels=[]
467 default_labels = default_labels - forbidden_labels - LabelManager::RESERVED_LABELS
468 default = default_labels.join(" ")
469 default += " " unless default.empty?
471 applyable_labels = (LabelManager.applyable_labels - forbidden_labels).map { |l| LabelManager.string_for l }.sort_by { |s| s.downcase }
473 answer = ask_many_with_completions domain, question, applyable_labels, default
477 user_labels = answer.split(/\s+/).map { |l| l.intern }
478 user_labels.each do |l|
479 if forbidden_labels.include?(l) || LabelManager::RESERVED_LABELS.include?(l)
480 BufferManager.flash "'#{l}' is a reserved label!"
487 def ask_for_contacts domain, question, default_contacts=[]
488 default = default_contacts.map { |s| s.to_s }.join(" ")
489 default += " " unless default.empty?
491 recent = Index.load_contacts(AccountManager.user_emails, :num => 10).map { |c| [c.full_address, c.email] }
492 contacts = ContactManager.contacts.map { |c| [ContactManager.alias_for(c), c.full_address, c.email] }
494 completions = (recent + contacts).flatten.uniq.sort
495 answer = BufferManager.ask_many_emails_with_completions domain, question, completions, default
498 answer.split_on_commas.map { |x| ContactManager.contact_for(x.downcase) || PersonManager.person_for(x) }
502 ## for simplicitly, we always place the question at the very bottom of the
504 def ask domain, question, default=nil, &block
505 raise "impossible!" if @asking
508 @textfields[domain] ||= TextField.new
509 tf = @textfields[domain]
512 status, title = get_status_and_title @focus_buf
515 tf.activate Ncurses.stdscr, Ncurses.rows - 1, 0, Ncurses.cols, question, default, &block
516 @dirty = true # for some reason that blanks the whole fucking screen
517 draw_screen :sync => false, :status => status, :title => title
523 c = Ncurses.nonblocking_getch
524 next unless c # getch timeout
525 break unless tf.handle_input c # process keystroke
527 if tf.new_completions?
528 kill_buffer completion_buf if completion_buf
530 shorts = tf.completions.map { |full, short| short }
531 prefix_len = shorts.shared_prefix.length
533 mode = CompletionMode.new shorts, :header => "Possible completions for \"#{tf.value}\": ", :prefix_len => prefix_len
534 completion_buf = spawn "<completions>", mode, :height => 10
536 draw_screen :skip_minibuf => true
538 elsif tf.roll_completions?
539 completion_buf.mode.roll
540 draw_screen :skip_minibuf => true
544 Ncurses.sync { Ncurses.refresh }
547 kill_buffer completion_buf if completion_buf
553 draw_screen :sync => false, :status => status, :title => title
558 def ask_getch question, accept=nil
559 raise "impossible!" if @asking
561 accept = accept.split(//).map { |x| x[0] } if accept
563 status, title = get_status_and_title @focus_buf
565 draw_screen :sync => false, :status => status, :title => title
566 Ncurses.mvaddstr Ncurses.rows - 1, 0, question
567 Ncurses.move Ncurses.rows - 1, question.length + 1
576 key = Ncurses.nonblocking_getch or next
577 if key == Ncurses::KEY_CANCEL
579 elsif accept.nil? || accept.empty? || accept.member?(key)
588 draw_screen :sync => false, :status => status, :title => title
594 ## returns true (y), false (n), or nil (ctrl-g / cancel)
595 def ask_yes_or_no question
596 case(r = ask_getch question, "ynYN")
606 ## turns an input keystroke into an action symbol. returns the action
607 ## if found, nil if not found, and throws InputSequenceAborted if
608 ## the user aborted a multi-key sequence. (Because each of those cases
609 ## should be handled differently.)
611 ## this is in BufferManager because multi-key sequences require prompting.
612 def resolve_input_with_keymap c, keymap
613 action, text = keymap.action_for c
614 while action.is_a? Keymap # multi-key commands, prompt
615 key = BufferManager.ask_getch text
616 unless key # user canceled, abort
618 raise InputSequenceAborted
620 action, text = action.action_for(key) if action.has_key?(key)
626 @minibuf_mutex.synchronize do
629 @minibuf_stack.compact.size, 1].max
633 def draw_minibuf opts={}
635 @minibuf_mutex.synchronize do
636 m = @minibuf_stack.compact
637 m << @flash if @flash
638 m << "" if m.empty? unless @asking # to clear it
641 Ncurses.mutex.lock unless opts[:sync] == false
642 Ncurses.attrset Colormap.color_for(:none)
643 adj = @asking ? 2 : 1
644 m.each_with_index do |s, i|
645 Ncurses.mvaddstr Ncurses.rows - i - adj, 0, s + (" " * [Ncurses.cols - s.length, 0].max)
647 Ncurses.refresh if opts[:refresh]
648 Ncurses.mutex.unlock unless opts[:sync] == false
654 @minibuf_mutex.synchronize do
656 id ||= @minibuf_stack.length
657 @minibuf_stack[id] = s
661 draw_screen :refresh => true
663 draw_minibuf :refresh => true
676 def erase_flash; @flash = nil; end
680 draw_screen :refresh => true
683 ## a little tricky because we can't just delete_at id because ids
684 ## are relative (they're positions into the array).
686 @minibuf_mutex.synchronize do
687 @minibuf_stack[id] = nil
688 if id == @minibuf_stack.length - 1
690 break if @minibuf_stack[i]
691 @minibuf_stack.delete_at i
696 draw_screen :refresh => true
699 def shell_out command
711 def default_status_bar buf
712 " [#{buf.mode.name}] #{buf.title} #{buf.mode.status}"
715 def default_terminal_title buf
716 "Sup #{Redwood::VERSION} :: #{buf.title}"
719 def get_status_and_title buf
721 :num_inbox => lambda { Index.num_results_for :label => :inbox },
722 :num_inbox_unread => lambda { Index.num_results_for :labels => [:inbox, :unread] },
723 :num_total => lambda { Index.size },
724 :num_spam => lambda { Index.num_results_for :label => :spam },
726 :mode => buf.mode.name,
727 :status => buf.mode.status
730 statusbar_text = HookManager.run("status-bar-text", opts) || default_status_bar(buf)
731 term_title_text = HookManager.run("terminal-title-text", opts) || default_terminal_title(buf)
733 [statusbar_text, term_title_text]
739 while(u = Etc.getpwent)