1 ## Here we define all the "chunks" that a message is parsed
2 ## into. Chunks are used by ThreadViewMode to render a message. Chunks
3 ## are used for both MIME stuff like attachments, for Sup's parsing of
4 ## the message body into text, quote, and signature regions, and for
5 ## notices like "this message was decrypted" or "this message contains
6 ## a valid signature"---basically, anything we want to differentiate
9 ## A chunk can be inlineable, expandable, or viewable. If it's
10 ## inlineable, #color and #lines are called and the output is treated
11 ## as part of the message text. This is how Text and one-line Quotes
12 ## and Signatures work.
14 ## If it's not inlineable but is expandable, #patina_color and
15 ## #patina_text are called to generate a "patina" (a one-line widget,
16 ## basically), and the user can press enter to toggle the display of
17 ## the chunk content, which is generated from #color and #lines as
18 ## above. This is how Quote, Signature, and most widgets
19 ## work. Exandable chunks can additionally define #initial_state to be
20 ## :open if they want to start expanded (default is to start collapsed).
22 ## If it's not expandable but is viewable, a patina is displayed using
23 ###patina_color and #patina_text, but no toggling is allowed. Instead,
24 ##if #view! is defined, pressing enter on the widget calls view! and
25 ##(if that returns false) #to_s. Otherwise, enter does nothing. This
26 ##is how non-inlineable attachments work.
31 HookManager.register "mime-decode", <<EOS
32 Executes when decoding a MIME attachment.
34 content_type: the content-type of the message
35 filename: the filename of the attachment as saved to disk (generated
36 on the fly, so don't call more than once)
37 sibling_types: if this attachment is part of a multipart MIME attachment,
38 an array of content-types for all attachments. Otherwise,
41 The decoded text of the attachment, or nil if not decoded.
45 ## raw_content is the post-MIME-decode content. this is used for
46 ## saving the attachment to disk.
47 attr_reader :content_type, :filename, :lines, :raw_content
49 def initialize content_type, filename, encoded_content, sibling_types
50 @content_type = content_type
52 @raw_content = encoded_content.decode
57 Message.convert_from(@raw_content, encoded_content.charset).split("\n")
59 text = HookManager.run "mime-decode", :content_type => content_type,
60 :filename => lambda { write_to_disk },
61 :sibling_types => sibling_types
62 text.split("\n") if text
67 def patina_color; :attachment_color end
70 "Attachment: #{filename} (#{lines.length} lines)"
72 "Attachment: #{filename} (#{content_type})"
76 ## an attachment is exapndable if we've managed to decode it into
77 ## something we can display inline. otherwise, it's viewable.
78 def inlineable?; false end
79 def expandable?; !viewable? end
80 def initial_state; :open end
81 def viewable?; @lines.nil? end
84 system "/usr/bin/run-mailcap --action=view #{@content_type}:#{path} >& /dev/null"
89 file = Tempfile.new "redwood.attachment"
90 file.print @raw_content
95 ## used when viewing the attachment as text
97 @lines || @raw_content
102 WRAP_LEN = 80 # wrap at this width
106 @lines = lines.map { |l| l.chomp.wrap WRAP_LEN }.flatten # wrap
108 ## trim off all empty lines except one
109 lines.pop while lines.last =~ /^\s*$/
112 def inlineable?; true end
113 def expandable?; false end
114 def viewable?; false end
124 def inlineable?; @lines.length == 1 end
125 def expandable?; !inlineable? end
126 def viewable?; false end
128 def patina_color; :quote_patina_color end
129 def patina_text; "(#{lines.length} quoted lines)" end
130 def color; :quote_color end
139 def inlineable?; @lines.length == 1 end
140 def expandable?; !inlineable? end
141 def viewable?; false end
143 def patina_color; :sig_patina_color end
144 def patina_text; "(#{lines.length}-line signature)" end
145 def color; :sig_color end
148 class EnclosedMessage
150 def initialize from, body
152 @lines = body.split "\n"
156 @from ? @from.longname : "unknown sender"
159 def inlineable?; false end
160 def expandable?; true end
161 def initial_state; :open end
162 def viewable?; false end
164 def patina_color; :generic_notice_patina_color end
165 def patina_text; "Begin enclosed message from #{from} (#{@lines.length} lines)" end
167 def color; :quote_color end
171 attr_reader :lines, :status, :patina_text
173 def initialize status, description, lines=[]
175 @patina_text = description
181 when :valid: :cryptosig_valid_color
182 when :invalid: :cryptosig_invalid_color
183 else :cryptosig_unknown_color
186 def color; patina_color end
188 def inlineable?; false end
189 def expandable?; !@lines.empty? end
190 def viewable?; false end