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
30 ## it is NECESSARY to wrap Ncurses.getch in a select() otherwise all
31 ## background threads will be BLOCKED. (except in very modern versions
32 ## of libncurses-ruby. the current one on ubuntu seems to work well.)
33 if IO.select([$stdin], nil, nil, 0.5)
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, :atime
55 bool_reader :dirty, :system
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
67 @system = opts[:system] || false
70 def content_height; @height - 1; end
71 def content_width; @width; end
74 return if cols == @width && rows == @height
78 mode.resize rows, cols
91 def mark_dirty; @dirty = true; end
105 ## s nil means a blank line!
106 def write y, x, s, opts={}
107 return if x >= @width || y >= @height
109 @w.attrset Colormap.color_for(opts[:color] || :none, opts[:highlight])
111 maxl = @width - x # maximum display width width
112 stringl = maxl # string "length"
113 ## the next horribleness is thanks to ruby's lack of widechar support
114 stringl += 1 while stringl < s.length && s[0 ... stringl].display_length < maxl
115 @w.mvaddstr y, x, s[0 ... stringl]
116 unless opts[:no_fill]
119 @w.mvaddstr(y, x + l, " " * (maxl - l))
128 def draw_status status
129 write @height - 1, 0, status, :color => :status_color
148 attr_reader :focus_buf
150 ## we have to define the key used to continue in-buffer search here, because
151 ## it has special semantics that BufferManager deals with---current searches
152 ## are canceled by any keypress except this one.
153 CONTINUE_IN_BUFFER_SEARCH_KEY = "n"
155 HookManager.register "status-bar-text", <<EOS
156 Sets the status bar. The default status bar contains the mode name, the buffer
157 title, and the mode status. Note that this will be called at least once per
158 keystroke, so excessive computation is discouraged.
161 num_inbox: number of messages in inbox
162 num_inbox_unread: total number of messages marked as unread
163 num_total: total number of messages in the index
164 num_spam: total number of messages marked as spam
165 title: title of the current buffer
166 mode: current mode name (string)
167 status: current mode status (string)
168 Return value: a string to be used as the status bar.
171 HookManager.register "terminal-title-text", <<EOS
172 Sets the title of the current terminal, if applicable. Note that this will be
173 called at least once per keystroke, so excessive computation is discouraged.
175 Variables: the same as status-bar-text hook.
176 Return value: a string to be used as the terminal title.
179 HookManager.register "extra-contact-addresses", <<EOS
180 A list of extra addresses to propose for tab completion, etc. when the
181 user is entering an email address. Can be plain email addresses or can
182 be full "User Name <email@domain.tld>" entries.
185 Return value: an array of email address strings.
194 @minibuf_mutex = Mutex.new
197 @shelled = @asking = false
198 @in_x = ENV["TERM"] =~ /(xterm|rxvt|screen)/
199 @sigwinch_happened = false
200 @sigwinch_mutex = Mutex.new
202 self.class.i_am_the_instance self
205 def sigwinch_happened!; @sigwinch_mutex.synchronize { @sigwinch_happened = true } end
206 def sigwinch_happened?; @sigwinch_mutex.synchronize { @sigwinch_happened } end
208 def buffers; @name_map.to_a; end
211 return unless @buffers.member? buf
212 return if buf == @focus_buf
213 @focus_buf.blur if @focus_buf
218 def raise_to_front buf
219 @buffers.delete(buf) or return
220 if @buffers.length > 0 && @buffers.last.force_to_top?
221 @buffers.insert(-2, buf)
225 focus_on @buffers.last
229 ## we reset force_to_top when rolling buffers. this is so that the
230 ## human can actually still move buffers around, while still
231 ## programmatically being able to pop stuff up in the middle of
232 ## drawing a window without worrying about covering it up.
234 ## if we ever start calling roll_buffers programmatically, we will
235 ## have to change this. but it's not clear that we will ever actually
238 @buffers.last.force_to_top = false
239 raise_to_front @buffers.first
242 def roll_buffers_backwards
243 return unless @buffers.length > 1
244 @buffers.last.force_to_top = false
245 raise_to_front @buffers[@buffers.length - 2]
250 if @focus_buf.mode.in_search? && c != CONTINUE_IN_BUFFER_SEARCH_KEY[0]
251 @focus_buf.mode.cancel_search!
252 @focus_buf.mark_dirty
254 @focus_buf.mode.handle_input c
258 def exists? n; @name_map.member? n; end
259 def [] n; @name_map[n]; end
261 raise ArgumentError, "duplicate buffer name" if b && @name_map.member?(n)
262 raise ArgumentError, "title must be a string" unless n.is_a? String
266 def completely_redraw_screen
269 ## this magic makes Ncurses get the new size of the screen
272 @sigwinch_mutex.synchronize { @sigwinch_happened = false }
273 Redwood::log "new screen size is #{Ncurses.rows} x #{Ncurses.cols}"
275 status, title = get_status_and_title(@focus_buf) # must be called outside of the ncurses lock
280 draw_screen :sync => false, :status => status, :title => title
284 def draw_screen opts={}
288 if opts.member? :status
289 [opts[:status], opts[:title]]
291 raise "status must be supplied if draw_screen is called within a sync" if opts[:sync] == false
292 get_status_and_title @focus_buf # must be called outside of the ncurses lock
295 ## http://rtfm.etla.org/xterm/ctlseq.html (see Operating System Controls)
296 print "\033]0;#{title}\07" if title && @in_x
298 Ncurses.mutex.lock unless opts[:sync] == false
300 ## disabling this for the time being, to help with debugging
301 ## (currently we only have one buffer visible at a time).
302 ## TODO: reenable this if we allow multiple buffers
303 false && @buffers.inject(@dirty) do |dirty, buf|
304 buf.resize Ncurses.rows - minibuf_lines, Ncurses.cols
305 #dirty ? buf.draw : buf.redraw
313 buf.resize Ncurses.rows - minibuf_lines, Ncurses.cols
314 @dirty ? buf.draw(status) : buf.redraw(status)
317 draw_minibuf :sync => false unless opts[:skip_minibuf]
321 Ncurses.refresh if opts[:refresh]
322 Ncurses.mutex.unlock unless opts[:sync] == false
325 ## if the named buffer already exists, pops it to the front without
326 ## calling the block. otherwise, gets the mode from the block and
327 ## creates a new buffer. returns two things: the buffer, and a boolean
328 ## indicating whether it's a new buffer or not.
329 def spawn_unless_exists title, opts={}
331 if @name_map.member? title
332 raise_to_front @name_map[title] unless opts[:hidden]
336 spawn title, mode, opts
339 [@name_map[title], new]
342 def spawn title, mode, opts={}
343 raise ArgumentError, "title must be a string" unless title.is_a? String
346 while @name_map.member? realtitle
347 realtitle = "#{title} <#{num}>"
351 width = opts[:width] || Ncurses.cols
352 height = opts[:height] || Ncurses.rows - 1
354 ## since we are currently only doing multiple full-screen modes,
355 ## use stdscr for each window. once we become more sophisticated,
356 ## we may need to use a new Ncurses::WINDOW
358 ## w = Ncurses::WINDOW.new(height, width, (opts[:top] || 0),
359 ## (opts[:left] || 0))
361 b = Buffer.new w, mode, width, height, :title => realtitle, :force_to_top => opts[:force_to_top], :system => opts[:system]
363 @name_map[realtitle] = b
367 focus_on b unless @focus_buf
374 ## requires the mode to have #done? and #value methods
375 def spawn_modal title, mode, opts={}
376 b = spawn title, mode, opts
380 c = Ncurses.nonblocking_getch
381 next unless c # getch timeout
382 break if c == Ncurses::KEY_CANCEL
385 rescue InputSequenceAborted # do nothing
395 def kill_all_buffers_safely
396 until @buffers.empty?
397 ## inbox mode always claims it's unkillable. we'll ignore it.
398 return false unless @buffers.last.mode.is_a?(InboxMode) || @buffers.last.mode.killable?
399 kill_buffer @buffers.last
404 def kill_buffer_safely buf
405 return false unless buf.mode.killable?
411 kill_buffer @buffers.first until @buffers.empty?
415 raise ArgumentError, "buffer not on stack: #{buf}: #{buf.title.inspect}" unless @buffers.member? buf
419 @name_map.delete buf.title
420 @focus_buf = nil if @focus_buf == buf
422 ## TODO: something intelligent here
423 ## for now I will simply prohibit killing the inbox buffer.
425 raise_to_front @buffers.last
429 def ask_with_completions domain, question, completions, default=nil
430 ask domain, question, default do |s|
431 completions.select { |x| x =~ /^#{Regexp::escape s}/i }.map { |x| [x, x] }
435 def ask_many_with_completions domain, question, completions, default=nil
436 ask domain, question, default do |partial|
441 when /^(.*\s+)?(.*?)$/
444 raise "william screwed up completion: #{partial.inspect}"
447 completions.select { |x| x =~ /^#{Regexp::escape target}/i }.map { |x| [prefix + x, x] }
451 def ask_many_emails_with_completions domain, question, completions, default=nil
452 ask domain, question, default do |partial|
453 prefix, target = partial.split_on_commas_with_remainder
454 target ||= prefix.pop || ""
455 prefix = prefix.join(", ") + (prefix.empty? ? "" : ", ")
456 completions.select { |x| x =~ /^#{Regexp::escape target}/i }.sort_by { |c| [ContactManager.contact_for(c) ? 0 : 1, c] }.map { |x| [prefix + x, x] }
460 def ask_for_filename domain, question, default=nil
461 answer = ask domain, question, default do |s|
462 if s =~ /(~([^\s\/]*))/ # twiddle directory expansion
464 name = $2.empty? ? Etc.getlogin : $2
465 dir = Etc.getpwnam(name).dir rescue nil
467 [[s.sub(full, dir), "~#{name}"]]
469 users.select { |u| u =~ /^#{Regexp::escape name}/ }.map do |u|
470 [s.sub("~#{name}", "~#{u}"), "~#{u}"]
473 else # regular filename completion
474 Dir["#{s}*"].sort.map do |fn|
475 suffix = File.directory?(fn) ? "/" : ""
476 [fn + suffix, File.basename(fn) + suffix]
484 spawn_modal "file browser", FileBrowserMode.new
485 elsif File.directory?(answer)
486 spawn_modal "file browser", FileBrowserMode.new(answer)
488 File.expand_path answer
495 ## returns an array of labels
496 def ask_for_labels domain, question, default_labels, forbidden_labels=[]
497 default_labels = default_labels - forbidden_labels - LabelManager::RESERVED_LABELS
498 default = default_labels.join(" ")
499 default += " " unless default.empty?
501 # here I would prefer to give more control and allow all_labels instead of
502 # user_defined_labels only
503 applyable_labels = (LabelManager.user_defined_labels - forbidden_labels).map { |l| LabelManager.string_for l }.sort_by { |s| s.downcase }
505 answer = ask_many_with_completions domain, question, applyable_labels, default
509 user_labels = answer.symbolistize
510 user_labels.each do |l|
511 if forbidden_labels.include?(l) || LabelManager::RESERVED_LABELS.include?(l)
512 BufferManager.flash "'#{l}' is a reserved label!"
519 def ask_for_contacts domain, question, default_contacts=[]
520 default = default_contacts.map { |s| s.to_s }.join(" ")
521 default += " " unless default.empty?
523 recent = Index.load_contacts(AccountManager.user_emails, :num => 10).map { |c| [c.full_address, c.email] }
524 contacts = ContactManager.contacts.map { |c| [ContactManager.alias_for(c), c.full_address, c.email] }
526 completions = (recent + contacts).flatten.uniq
527 completions += HookManager.run("extra-contact-addresses") || []
528 answer = BufferManager.ask_many_emails_with_completions domain, question, completions, default
531 answer.split_on_commas.map { |x| ContactManager.contact_for(x) || Person.from_address(x) }
535 ## for simplicitly, we always place the question at the very bottom of the
537 def ask domain, question, default=nil, &block
538 raise "impossible!" if @asking
541 @textfields[domain] ||= TextField.new
542 tf = @textfields[domain]
545 status, title = get_status_and_title @focus_buf
548 tf.activate Ncurses.stdscr, Ncurses.rows - 1, 0, Ncurses.cols, question, default, &block
549 @dirty = true # for some reason that blanks the whole fucking screen
550 draw_screen :sync => false, :status => status, :title => title
556 c = Ncurses.nonblocking_getch
557 next unless c # getch timeout
558 break unless tf.handle_input c # process keystroke
560 if tf.new_completions?
561 kill_buffer completion_buf if completion_buf
563 shorts = tf.completions.map { |full, short| short }
564 prefix_len = shorts.shared_prefix.length
566 mode = CompletionMode.new shorts, :header => "Possible completions for \"#{tf.value}\": ", :prefix_len => prefix_len
567 completion_buf = spawn "<completions>", mode, :height => 10
569 draw_screen :skip_minibuf => true
571 elsif tf.roll_completions?
572 completion_buf.mode.roll
573 draw_screen :skip_minibuf => true
577 Ncurses.sync { Ncurses.refresh }
580 kill_buffer completion_buf if completion_buf
586 draw_screen :sync => false, :status => status, :title => title
591 def ask_getch question, accept=nil
592 raise "impossible!" if @asking
594 accept = accept.split(//).map { |x| x[0] } if accept
596 status, title = get_status_and_title @focus_buf
598 draw_screen :sync => false, :status => status, :title => title
599 Ncurses.mvaddstr Ncurses.rows - 1, 0, question
600 Ncurses.move Ncurses.rows - 1, question.length + 1
609 key = Ncurses.nonblocking_getch or next
610 if key == Ncurses::KEY_CANCEL
612 elsif accept.nil? || accept.empty? || accept.member?(key)
621 draw_screen :sync => false, :status => status, :title => title
627 ## returns true (y), false (n), or nil (ctrl-g / cancel)
628 def ask_yes_or_no question
629 case(r = ask_getch question, "ynYN")
639 ## turns an input keystroke into an action symbol. returns the action
640 ## if found, nil if not found, and throws InputSequenceAborted if
641 ## the user aborted a multi-key sequence. (Because each of those cases
642 ## should be handled differently.)
644 ## this is in BufferManager because multi-key sequences require prompting.
645 def resolve_input_with_keymap c, keymap
646 action, text = keymap.action_for c
647 while action.is_a? Keymap # multi-key commands, prompt
648 key = BufferManager.ask_getch text
649 unless key # user canceled, abort
651 raise InputSequenceAborted
653 action, text = action.action_for(key) if action.has_key?(key)
659 @minibuf_mutex.synchronize do
662 @minibuf_stack.compact.size, 1].max
666 def draw_minibuf opts={}
668 @minibuf_mutex.synchronize do
669 m = @minibuf_stack.compact
670 m << @flash if @flash
671 m << "" if m.empty? unless @asking # to clear it
674 Ncurses.mutex.lock unless opts[:sync] == false
675 Ncurses.attrset Colormap.color_for(:none)
676 adj = @asking ? 2 : 1
677 m.each_with_index do |s, i|
678 Ncurses.mvaddstr Ncurses.rows - i - adj, 0, s + (" " * [Ncurses.cols - s.length, 0].max)
680 Ncurses.refresh if opts[:refresh]
681 Ncurses.mutex.unlock unless opts[:sync] == false
687 @minibuf_mutex.synchronize do
689 id ||= @minibuf_stack.length
690 @minibuf_stack[id] = s
694 draw_screen :refresh => true
696 draw_minibuf :refresh => true
709 def erase_flash; @flash = nil; end
713 draw_screen :refresh => true
716 ## a little tricky because we can't just delete_at id because ids
717 ## are relative (they're positions into the array).
719 @minibuf_mutex.synchronize do
720 @minibuf_stack[id] = nil
721 if id == @minibuf_stack.length - 1
723 break if @minibuf_stack[i]
724 @minibuf_stack.delete_at i
729 draw_screen :refresh => true
732 def shell_out command
737 Ncurses.stdscr.keypad 1
745 def default_status_bar buf
746 " [#{buf.mode.name}] #{buf.title} #{buf.mode.status}"
749 def default_terminal_title buf
750 "Sup #{Redwood::VERSION} :: #{buf.title}"
753 def get_status_and_title buf
755 :num_inbox => lambda { Index.num_results_for :label => :inbox },
756 :num_inbox_unread => lambda { Index.num_results_for :labels => [:inbox, :unread] },
757 :num_total => lambda { Index.size },
758 :num_spam => lambda { Index.num_results_for :label => :spam },
760 :mode => buf.mode.name,
761 :status => buf.mode.status
764 statusbar_text = HookManager.run("status-bar-text", opts) || default_status_bar(buf)
765 term_title_text = HookManager.run("terminal-title-text", opts) || default_terminal_title(buf)
767 [statusbar_text, term_title_text]
773 while(u = Etc.getpwent)