module Redwood
class ThreadViewMode < LineCursorMode
+ ## this holds all info we need to lay out a message
+ class Layout
+ attr_accessor :top, :bot, :prev, :next, :depth, :width, :state
+ end
+
DATE_FORMAT = "%B %e %Y %l:%M%P"
+ INDENT_SPACES = 2 # how many spaces to indent child messages
register_keymap do |k|
k.add :toggle_detailed_header, "Toggle detailed header", 'd'
k.add :save_to_disk, "Save message/attachment to disk", 's'
end
+ ## there are three important instance variables we hold to lay out
+ ## the thread. @layout is a map from Message and Chunk objects to
+ ## Layout objects. (for chunks, we only use the state field right
+ ## now.) @message_lines is a map from row #s to Message objects.
+ ## @chunk_lines is a map from row #s to Chunk objects.
+
def initialize thread, hidden_labels=[]
super()
@thread = thread
- @state = {}
@hidden_labels = hidden_labels
+ @layout = {}
earliest, latest = nil, nil
latest_date = nil
@thread.each do |m, d, p|
next unless m
earliest ||= m
- @state[m] = initial_state_for m
+ @layout[m] = Layout.new
+ @layout[m].state = initial_state_for m
if latest_date.nil? || m.date > latest_date
latest_date = m.date
latest = m
end
end
- @state[latest] = :open if @state[latest] == :closed
- @state[earliest] = :detailed if earliest.has_label?(:unread) || @thread.size == 1
+ @layout[latest].state = :open if @layout[latest].state == :closed
+ @layout[earliest].state = :detailed if earliest.has_label?(:unread) || @thread.size == 1
- BufferManager.say "Loading message bodies..." do
- regen_chunks
- regen_text
- end
+ BufferManager.say("Loading message bodies...") { regen_text }
end
def draw_line ln, opts={}
return unless(chunk = @chunk_lines[curpos])
case chunk
when Message, Message::Quote, Message::Signature
- @state[chunk] = (@state[chunk] != :closed ? :closed : :open)
- cursor_down if @state[chunk] == :closed
+ l = @layout[chunk]
+ l.state = (l.state != :closed ? :closed : :open)
+ cursor_down if l.state == :closed
when Message::Attachment
view_attachment chunk
end
def jump_to_next_open
return unless(m = @message_lines[curpos])
- while nextm = @messages[m][3]
- break if @state[nextm] == :open
+ while nextm = @layout[m].next
+ break if @layout[nextm].state == :open
m = nextm
end
jump_to_message nextm if nextm
return unless(m = @message_lines[curpos])
## jump to the top of the current message if we're in the body;
## otherwise, to the previous message
- top = @messages[m][0]
+
+ top = @layout[m].top
if curpos == top
- while(prevm = @messages[m][2])
- break if @state[prevm] != :closed
+ while(prevm = @layout[m].prev)
+ break if @layout[prevm].state != :closed
m = prevm
end
jump_to_message prevm if prevm
end
def jump_to_message m
- top, bot, prevm, nextm, depth = @messages[m]
- jump_to_line top unless top >= topline &&
- top <= botline && bot >= topline && bot <= botline
- jump_to_col depth * 2 # sorry!!!! TODO: make this a constant
- set_cursor_pos top
+ l = @layout[m]
+ left = l.depth * INDENT_SPACES
+ right = left + l.width
+
+ ## jump to the top line unless both top and bottom fit in the current view
+ jump_to_line l.top unless l.top >= topline && l.top <= botline && l.bot >= topline && l.bot <= botline
+
+ ## jump to the left columns unless both left and right fit in the current view
+ jump_to_col left unless left >= leftcol && left <= rightcol && right >= leftcol && right <= rightcol
+
+ ## either way, move the cursor to the first line
+ set_cursor_pos l.top
end
def expand_all_messages
@global_message_state ||= :closed
@global_message_state = (@global_message_state == :closed ? :open : :closed)
- @state.each { |m, v| @state[m] = @global_message_state if m.is_a? Message }
+ @layout.each { |m, l| l.state = @global_message_state if m.is_a? Message }
update
end
-
def collapse_non_new_messages
- @messages.each { |m, v| @state[m] = m.has_label?(:unread) ? :open : :closed }
+ @layout.each { |m, l| l.state = m.has_label?(:unread) ? :open : :closed }
update
end
def expand_all_quotes
if(m = @message_lines[curpos])
- quotes = @chunks[m].select { |c| c.is_a?(Message::Quote) || c.is_a?(Message::Signature) }
- open, closed = quotes.partition { |c| @state[c] == :open }
+ quotes = m.chunks.select { |c| c.is_a?(Message::Quote) || c.is_a?(Message::Signature) }
+ open, closed = quotes.partition { |c| @layout[c].state == :open }
newstate = open.length > closed.length ? :closed : :open
- quotes.each { |c| @state[c] = newstate }
+ quotes.each { |c| @layout[c].state = newstate }
update
end
end
end
end
end
- @messages = @chunks = @text = nil
+ @layout = @text = nil
end
private
buffer.mark_dirty if buffer
end
- def regen_chunks
- @chunks = {}
- @thread.each { |m, d, p| @chunks[m] = m.to_chunks if m.is_a?(Message) }
- end
-
+ ## here we generate the actual content lines. we accumulate
+ ## everything into @text, and we set @chunk_lines and
+ ## @message_lines, and we update @layout.
def regen_text
@text = []
@chunk_lines = []
@message_lines = []
- @messages = {}
- prev_m = nil
+ prevm = nil
@thread.each do |m, depth, parent|
## we're occasionally called on @threads that have had messages
## added to them since initialization. luckily we regen_text on
## scrolling (basically), so we can just slap this on here.
##
## to pick nits, the niceness that i do in the constructor with
- ## 'latest' might not be valid, but i don't see that as a huge
- ## issue.
- @state[m] ||= initial_state_for m if m
+ ## 'latest' etc. (for automatically opening just the latest
+ ## message if everything's been read) will not be valid, but
+ ## that's just a nicety and hopefully this won't happen too
+ ## often.
+ l = (@layout[m] ||= Layout.new)
+ l.state ||= initial_state_for m
+
+ ## build the patina
+ text = chunk_to_lines m, l.state, @text.length, depth, parent
+
+ l.top = @text.length
+ l.bot = @text.length + text.length # updated below
+ l.prev = prevm
+ l.next = nil
+ l.depth = depth
+ # l.state we preserve
+ l.width = 0 # updated below
+ @layout[l.prev].next = m if l.prev
- text = chunk_to_lines m, @state[m], @text.length, depth, parent
(0 ... text.length).each do |i|
@chunk_lines[@text.length + i] = m
@message_lines[@text.length + i] = m
+ lw = text[i].flatten.select { |x| x.is_a? String }.map { |x| x.length }.sum
end
- ## sorry i store all this shit in an array. very, very sorry.
- ## also sorry about the * 2. very, very sorry.
- @messages[m] = [@text.length, @text.length + text.length, prev_m, nil, depth]
- @messages[prev_m][3] = m if prev_m
- prev_m = m if m.is_a? Message
-
@text += text
- if @state[m] != :closed && @chunks.member?(m)
- @chunks[m].each do |c|
- @state[c] ||= :closed
- text = chunk_to_lines c, @state[c], @text.length, depth
- (0 ... text.length).each do |i|
- @chunk_lines[@text.length + i] = c
- @message_lines[@text.length + i] = m
+
+ if m.is_a? Message
+ prevm = m
+ if @layout[m].state != :closed
+ m.chunks.each do |c|
+ cl = (@layout[c] ||= Layout.new)
+ cl.state ||= :closed
+ text = chunk_to_lines c, cl.state, @text.length, depth
+ (0 ... text.length).each do |i|
+ @chunk_lines[@text.length + i] = c
+ @message_lines[@text.length + i] = m
+ lw = text[i].flatten.select { |x| x.is_a? String }.map { |x| x.length }.sum - (depth * INDENT_SPACES)
+ l.width = lw if lw > l.width
+ end
+ @text += text
end
- @text += text
+ @layout[m].bot = @text.length
end
- @messages[m][1] = @text.length
end
end
end
def chunk_to_lines chunk, state, start, depth, parent=nil
- prefix = " " * depth
+ prefix = " " * INDENT_SPACES * depth
case chunk
when :fake_root
[[[:message_patina_color, "#{prefix}<one or more unreceived messages>"]]]
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