Class: Redwood::ThreadViewMode

Inherits:
LineCursorMode show all
Includes:
CanAliasContacts
Defined in:
lib/sup/modes/thread_view_mode.rb

Defined Under Namespace

Classes: ChunkLayout, MessageLayout

Constant Summary collapse

DATE_FORMAT = 
"%B %e %Y %l:%M%p"
INDENT_SPACES =

how many spaces to indent child messages

2

Instance Attribute Summary

Attributes inherited from LineCursorMode

#curpos

Attributes inherited from ScrollMode

#botline, #leftcol, #topline

Attributes inherited from Mode

#buffer

Instance Method Summary collapse

Methods included from CanAliasContacts

#alias_contact

Methods inherited from LineCursorMode

#draw

Methods inherited from ScrollMode

#at_bottom?, #at_top?, #cancel_search!, #col_jump, #col_left, #col_right, #continue_search_in_buffer, #draw, #ensure_mode_validity, #half_page_down, #half_page_up, #in_search?, #jump_to_col, #jump_to_end, #jump_to_left, #jump_to_line, #jump_to_start, #line_down, #line_up, #page_down, #page_up, #resize, #rightcol, #search_goto_line, #search_goto_pos, #search_in_buffer, #search_start_line

Methods inherited from Mode

#blur, #cancel_search!, #draw, #focus, #handle_input, #help_text, #in_search?, keymap, keymaps, #killable?, load_all_modes, make_name, #name, #pipe_to_process, register_keymap, #resize, #resolve_input, #save_to_file, #unsaved?

Constructor Details

#initialize(thread, hidden_labels = [], index_mode = nil) ⇒ ThreadViewMode

there are a couple important instance variables we hold to format the thread and to provide line-based functionality. @layout is a map from Messages to MessageLayouts, and @chunk_layout from Chunks to ChunkLayouts. @message_lines is a map from row #s to Message objects. @chunk_lines is a map from row #s to Chunk objects. @person_lines is a map from row #s to Person objects.



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# File 'lib/sup/modes/thread_view_mode.rb', line 115

def initialize thread, hidden_labels=[], index_mode=nil
  super :slip_rows => $config[:slip_rows]
  @thread = thread
  @hidden_labels = hidden_labels

  ## used for dispatch-and-next
  @index_mode = index_mode
  @dying = false

  @layout = SavingHash.new { MessageLayout.new }
  @chunk_layout = SavingHash.new { ChunkLayout.new }
  earliest, latest = nil, nil
  latest_date = nil
  altcolor = false

  @thread.each do |m, d, p|
    next unless m
    earliest ||= m
    @layout[m].state = initial_state_for m
    @layout[m].toggled_state = false
    @layout[m].color = altcolor ? :alternate_patina_color : :message_patina_color
    @layout[m].star_color = altcolor ? :alternate_starred_patina_color : :starred_patina_color
    @layout[m].orig_new = m.has_label? :read
    altcolor = !altcolor
    if latest_date.nil? || m.date > latest_date
      latest_date = m.date
      latest = m
    end
  end

  @wrap = true

  @layout[latest].state = :open if @layout[latest].state == :closed
  @layout[earliest].state = :detailed if earliest.has_label?(:unread) || @thread.size == 1
end

Instance Method Details

#[](i) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 165

def [] i; @text[i]; end

#activate_chunk ⇒ Object

called when someone presses enter when the cursor is highlighting a chunk. for expandable chunks (including messages) we toggle open/closed state; for viewable chunks (like attachments) we view.



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# File 'lib/sup/modes/thread_view_mode.rb', line 326

def activate_chunk
  chunk = @chunk_lines[curpos] or return
  if chunk.is_a? Chunk::Text
    ## if the cursor is over a text region, expand/collapse the
    ## entire message
    chunk = @message_lines[curpos]
  end
  layout = if chunk.is_a?(Message)
    @layout[chunk]
  elsif chunk.expandable?
    @chunk_layout[chunk]
  end
  if layout
    layout.state = (layout.state != :closed ? :closed : :open)
    #cursor_down if layout.state == :closed # too annoying
    update
  elsif chunk.viewable?
    view chunk
  end
  if chunk.is_a?(Message) && $config[:jump_to_open_message]
    jump_to_message chunk
    jump_to_next_open if layout.state == :closed
  end
end

#alias ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 259

def alias
  p = @person_lines[curpos] or return
  alias_contact p
  update
end

#align_current_message ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 487

def align_current_message
  m = @message_lines[curpos] or return
  jump_to_message m, true
end

#archive_and_kill ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 581

def archive_and_kill; archive_and_then :kill end

#archive_and_next ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 587

def archive_and_next; archive_and_then :next end

#archive_and_prev ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 593

def archive_and_prev; archive_and_then :prev end

#archive_and_then(op) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 599

def archive_and_then op
  dispatch op do
    @thread.remove_label :inbox
    UpdateManager.relay self, :archived, @thread.first
    Index.save_thread @thread
    UndoManager.register "archiving 1 thread" do
      @thread.apply_label :inbox
      Index.save_thread @thread
      UpdateManager.relay self, :unarchived, @thread.first
    end
  end
end

#bounce ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 229

def bounce
  m = @message_lines[curpos] or return
  to = BufferManager.ask_for_contacts(:people, "Bounce To: ") or return

  defcmd = AccountManager..bounce_sendmail

  cmd = case (hookcmd = HookManager.run "bounce-command", :from => m.from, :to => to)
        when nil, /^$/ then defcmd
        else hookcmd
        end + ' ' + to.map { |t| t.email }.join(' ')

  bt = to.size > 1 ? "#{to.size} recipients" : to[0].to_s

  if BufferManager.ask_yes_or_no "Really bounce to #{bt}?"
    debug "bounce command: #{cmd}"
    begin
      IO.popen(cmd, 'w') do |sm|
        sm.puts m.raw_message
      end
      raise SendmailCommandFailed, "Couldn't execute #{cmd}" unless $? == 0
      m.add_label :forwarded
      Index.save_message m
    rescue SystemCallError, SendmailCommandFailed => e
      warn "problem sending mail: #{e.message}"
      BufferManager.flash "Problem sending mail: #{e.message}"
    end
  end
end

#buffer=(b) ⇒ Object

a little hacky—since regen_text can depend on buffer features like the content_width, we don’t call it in the constructor, and instead call it here, which is set before we’re responsible for drawing ourself.



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# File 'lib/sup/modes/thread_view_mode.rb', line 170

def buffer= b
  super
  regen_text
end

#cleanup ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 577

def cleanup
  @layout = @chunk_layout = @text = nil # for good luck
end

#collapse_non_new_messages ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 562

def collapse_non_new_messages
  @layout.each { |m, l| l.state = l.orig_new ? :open : :closed }
  update
end

#compose ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 272

def compose
  p = @person_lines[curpos]
  if p
    ComposeMode.spawn_nicely :to_default => p
  else
    ComposeMode.spawn_nicely
  end
end

#delete_and_kill ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 583

def delete_and_kill; delete_and_then :kill end

#delete_and_next ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 589

def delete_and_next; delete_and_then :next end

#delete_and_prev ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 595

def delete_and_prev; delete_and_then :prev end

#delete_and_then(op) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 625

def delete_and_then op
  dispatch op do
    @thread.apply_label :deleted
    UpdateManager.relay self, :deleted, @thread.first
    Index.save_thread @thread
    UndoManager.register "deleting 1 thread" do
      @thread.remove_label :deleted
      Index.save_thread @thread
      UpdateManager.relay self, :undeleted, @thread.first
    end
  end
end

#do_nothing_and_kill ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 585

def do_nothing_and_kill; do_nothing_and_then :kill end

#do_nothing_and_next ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 591

def do_nothing_and_next; do_nothing_and_then :next end

#do_nothing_and_prev ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 597

def do_nothing_and_prev; do_nothing_and_then :prev end

#do_nothing_and_then(op) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 646

def do_nothing_and_then op
  dispatch op
end

#draw_line(ln, opts = {}) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 157

def draw_line ln, opts={}
  if ln == curpos
    super ln, :highlight => true
  else
    super
  end
end

#edit_as_new ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 351

def edit_as_new
  m = @message_lines[curpos] or return
  mode = ComposeMode.new(:body => m.quotable_body_lines, :to => m.to, :cc => m.cc, :subj => m.subj, :bcc => m.bcc, :refs => m.refs, :replytos => m.replytos)
  BufferManager.spawn "edit as new", mode
  mode.default_edit_message
end

#edit_draft ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 418

def edit_draft
  m = @message_lines[curpos] or return
  if m.is_draft?
    mode = ResumeMode.new m
    BufferManager.spawn "Edit message", mode
    BufferManager.kill_buffer self.buffer
    mode.default_edit_message
  else
    BufferManager.flash "Not a draft message!"
  end
end

#edit_labels ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 281

def edit_labels
  old_labels = @thread.labels
  reserved_labels = old_labels.select { |l| LabelManager::RESERVED_LABELS.include? l }
  new_labels = BufferManager.ask_for_labels :label, "Labels for thread: ", @thread.labels.sort_by {|x| x.to_s}

  return unless new_labels
  @thread.labels = Set.new(reserved_labels) + new_labels
  new_labels.each { |l| LabelManager << l }
  update
  UpdateManager.relay self, :labeled, @thread.first
  Index.save_thread @thread
  UndoManager.register "labeling thread" do
    @thread.labels = old_labels
    Index.save_thread @thread
    UpdateManager.relay self, :labeled, @thread.first
  end
end

#expand_all_messages ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 555

def expand_all_messages
  @global_message_state ||= :closed
  @global_message_state = (@global_message_state == :closed ? :open : :closed)
  @layout.each { |m, l| l.state = @global_message_state }
  update
end

#expand_all_quotes ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 567

def expand_all_quotes
  if(m = @message_lines[curpos])
    quotes = m.chunks.select { |c| (c.is_a?(Chunk::Quote) || c.is_a?(Chunk::Signature)) && c.lines.length > 1 }
    numopen = quotes.inject(0) { |s, c| s + (@chunk_layout[c].state == :open ? 1 : 0) }
    newstate = numopen > quotes.length / 2 ? :closed : :open
    quotes.each { |c| @chunk_layout[c].state = newstate }
    update
  end
end

#forward ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 221

def forward
  if(chunk = @chunk_lines[curpos]) && chunk.is_a?(Chunk::Attachment)
    ForwardMode.spawn_nicely :attachments => [chunk]
  elsif(m = @message_lines[curpos])
    ForwardMode.spawn_nicely :message => m
  end
end

#jump_to_first_open ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 442

def jump_to_first_open
  m = @message_lines[0] or return
  if @layout[m].state != :closed
    jump_to_message m#, true
  else
    jump_to_next_open #true
  end
end

#jump_to_message(m, force_alignment = false) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 532

def jump_to_message m, force_alignment=false
  l = @layout[m]

  ## boundaries of the message
  message_left = l.depth * INDENT_SPACES
  message_right = message_left + l.width

  ## calculate leftmost colum
  left = if force_alignment # force mode: align exactly
    message_left
  else # regular: minimize cursor movement
    ## leftmost and rightmost are boundaries of all valid left-column
    ## alignments.
    leftmost = [message_left, message_right - buffer.content_width + 1].min
    rightmost = message_left
    leftcol.clamp(leftmost, rightmost)
  end

  jump_to_line l.top    # move vertically
  jump_to_col left      # move horizontally
  set_cursor_pos l.top  # set cursor pos
end

#jump_to_next_and_open ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 451

def jump_to_next_and_open
  return continue_search_in_buffer if in_search? # err.. don't know why im doing this

  m = (curpos ... @message_lines.length).argfind { |i| @message_lines[i] }
  return unless m

  nextm = @layout[m].next
  return unless nextm

  if @layout[m].toggled_state == true
    @layout[m].state = :closed
    @layout[m].toggled_state = false
    update
  end

  if @layout[nextm].state == :closed
    @layout[nextm].state = :open
    @layout[nextm].toggled_state = true
  end

  jump_to_message nextm if nextm

  update if @layout[nextm].toggled_state
end

#jump_to_next_open(force_alignment = nil) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 476

def jump_to_next_open force_alignment=nil
  return continue_search_in_buffer if in_search? # hack: allow 'n' to apply to both operations
  m = (curpos ... @message_lines.length).argfind { |i| @message_lines[i] }
  return unless m
  while nextm = @layout[m].next
    break if @layout[nextm].state != :closed
    m = nextm
  end
  jump_to_message nextm, force_alignment if nextm
end

#jump_to_prev_and_open(force_alignment = nil) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 492

def jump_to_prev_and_open force_alignment=nil
  m = (0 .. curpos).to_a.reverse.argfind { |i| @message_lines[i] }
  return unless m

  nextm = @layout[m].prev
  return unless nextm

  if @layout[m].toggled_state == true
    @layout[m].state = :closed
    @layout[m].toggled_state = false
    update
  end

  if @layout[nextm].state == :closed
    @layout[nextm].state = :open
    @layout[nextm].toggled_state = true
  end

  jump_to_message nextm if nextm
  update if @layout[nextm].toggled_state
end

#jump_to_prev_open ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 514

def jump_to_prev_open
  m = (0 .. curpos).to_a.reverse.argfind { |i| @message_lines[i] } # bah, .to_a
  return unless m
  ## jump to the top of the current message if we're in the body;
  ## otherwise, to the previous message

  top = @layout[m].top
  if curpos == top
    while(prevm = @layout[m].prev)
      break if @layout[prevm].state != :closed
      m = prevm
    end
    jump_to_message prevm if prevm
  else
    jump_to_message m
  end
end

#lines ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 164

def lines; @text.length; end

#pipe_message ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 672

def pipe_message
  chunk = @chunk_lines[curpos]
  chunk = nil unless chunk.is_a?(Chunk::Attachment)
  message = @message_lines[curpos] unless chunk

  return unless chunk || message

  command = BufferManager.ask(:shell, "pipe command: ")
  return if command.nil? || command.empty?

  output = pipe_to_process(command) do |stream|
    if chunk
      stream.print chunk.raw_content
    else
      message.each_raw_message_line { |l| stream.print l }
    end
  end

  if output
    BufferManager.spawn "Output of '#{command}'", TextMode.new(output.ascii)
  else
    BufferManager.flash "'#{command}' done!"
  end
end

#publish ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 409

def publish
  chunk = @chunk_lines[curpos] or return
  if HookManager.enabled? "publish"
    HookManager.run "publish", :chunk => chunk
  else
    BufferManager.flash "Publishing hook not defined."
  end
end

#reply(type_arg = nil) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 195

def reply type_arg=nil
  m = @message_lines[curpos] or return
  mode = ReplyMode.new m, type_arg
  BufferManager.spawn "Reply to #{m.subj}", mode
end

#reply_all ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 201

def reply_all; reply :all; end

#save_all_to_disk ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 383

def save_all_to_disk
  m = @message_lines[curpos] or return
  default_dir = ($config[:default_attachment_save_dir] || ".")
  folder = BufferManager.ask_for_filename :filename, "Save all attachments to folder: ", default_dir, true
  return unless folder

  num = 0
  num_errors = 0
  m.chunks.each do |chunk|
    next unless chunk.is_a?(Chunk::Attachment)
    fn = File.join(folder, chunk.filename)
    num_errors += 1 unless save_to_file(fn, false) { |f| f.print chunk.raw_content }
    num += 1
  end

  if num == 0
    BufferManager.flash "Didn't find any attachments!"
  else
    if num_errors == 0
      BufferManager.flash "Wrote #{num.pluralize 'attachment'} to #{folder}."
    else
      BufferManager.flash "Wrote #{(num - num_errors).pluralize 'attachment'} to #{folder}; couldn't write #{num_errors} of them (see log)."
    end
  end
end

#save_to_disk ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 358

def save_to_disk
  chunk = @chunk_lines[curpos] or return
  case chunk
  when Chunk::Attachment
    default_dir = $config[:default_attachment_save_dir]
    default_dir = ENV["HOME"] if default_dir.nil? || default_dir.empty?
    default_fn = File.expand_path File.join(default_dir, chunk.filename)
    fn = BufferManager.ask_for_filename :filename, "Save attachment to file or directory: ", default_fn, true

    # if user selects directory use file name from message
    if fn and File.directory? fn
      fn = File.join(fn, chunk.filename)
    end

    save_to_file(fn) { |f| f.print chunk.raw_content } if fn
  else
    m = @message_lines[curpos]
    fn = BufferManager.ask_for_filename :filename, "Save message to file: "
    return unless fn
    save_to_file(fn) do |f|
      m.each_raw_message_line { |l| f.print l }
    end
  end
end

#search ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 265

def search
  p = @person_lines[curpos] or return
  mode = PersonSearchResultsMode.new [p]
  BufferManager.spawn "Search for #{p.name}", mode
  mode.load_threads :num => mode.buffer.content_height
end

#send_draft ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 430

def send_draft
  m = @message_lines[curpos] or return
  if m.is_draft?
    mode = ResumeMode.new m
    BufferManager.spawn "Send message", mode
    BufferManager.kill_buffer self.buffer
    mode.send_message
  else
    BufferManager.flash "Not a draft message!"
  end
end

#show_header ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 175

def show_header
  m = @message_lines[curpos] or return
  BufferManager.spawn_unless_exists("Full header for #{m.id}") do
    TextMode.new m.raw_header.ascii
  end
end

#show_message ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 182

def show_message
  m = @message_lines[curpos] or return
  BufferManager.spawn_unless_exists("Raw message for #{m.id}") do
    TextMode.new m.raw_message.ascii
  end
end

#spam_and_kill ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 582

def spam_and_kill; spam_and_then :kill end

#spam_and_next ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 588

def spam_and_next; spam_and_then :next end

#spam_and_prev ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 594

def spam_and_prev; spam_and_then :prev end

#spam_and_then(op) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 612

def spam_and_then op
  dispatch op do
    @thread.apply_label :spam
    UpdateManager.relay self, :spammed, @thread.first
    Index.save_thread @thread
    UndoManager.register "marking 1 thread as spam" do
      @thread.remove_label :spam
      Index.save_thread @thread
      UpdateManager.relay self, :unspammed, @thread.first
    end
  end
end

#status ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 698

def status
  user_labels = @thread.labels.to_a.map do |l|
    l.to_s if LabelManager.user_defined_labels.member?(l)
  end.compact.join(",")
  user_labels = (user_labels.empty? and "" or "<#{user_labels}>")
  [user_labels, super].join(" -- ")
end

#subscribe_to_list ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 203

def subscribe_to_list
  m = @message_lines[curpos] or return
  if m.list_subscribe && m.list_subscribe =~ /<mailto:(.*?)(\?subject=(.*?))?>/
    ComposeMode.spawn_nicely :from => AccountManager.(m.recipient_email), :to => [Person.from_address($1)], :subj => ($3 || "subscribe")
  else
    BufferManager.flash "Can't find List-Subscribe header for this message."
  end
end

#toggle_detailed_header ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 189

def toggle_detailed_header
  m = @message_lines[curpos] or return
  @layout[m].state = (@layout[m].state == :detailed ? :open : :detailed)
  update
end

#toggle_label(m, label) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 309

def toggle_label m, label
  if m.has_label? label
    m.remove_label label
  else
    m.add_label label
  end
  ## TODO: don't recalculate EVERYTHING just to add a stupid little
  ## star to the display
  update
  UpdateManager.relay self, :single_message_labeled, m
  Index.save_thread @thread
end

#toggle_new ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 304

def toggle_new
  m = @message_lines[curpos] or return
  toggle_label m, :unread
end

#toggle_starred ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 299

def toggle_starred
  m = @message_lines[curpos] or return
  toggle_label m, :starred
end

#toggle_wrap ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 151

def toggle_wrap
  @wrap = !@wrap
  regen_text
  buffer.mark_dirty if buffer
end

#unread_and_kill ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 584

def unread_and_kill; unread_and_then :kill end

#unread_and_next ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 590

def unread_and_next; unread_and_then :next end

#unread_and_prev ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 596

def unread_and_prev; unread_and_then :prev end

#unread_and_then(op) ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 638

def unread_and_then op
  dispatch op do
    @thread.apply_label :unread
    UpdateManager.relay self, :unread, @thread.first
    Index.save_thread @thread
  end
end

#unsubscribe_from_list ⇒ Object 



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# File 'lib/sup/modes/thread_view_mode.rb', line 212

def unsubscribe_from_list
  m = @message_lines[curpos] or return
  if m.list_unsubscribe && m.list_unsubscribe =~ /<mailto:(.*?)(\?subject=(.*?))?>/
    ComposeMode.spawn_nicely :from => AccountManager.(m.recipient_email), :to => [Person.from_address($1)], :subj => ($3 || "unsubscribe")
  else
    BufferManager.flash "Can't find List-Unsubscribe header for this message."
  end
end