3 ## Here we define all the "chunks" that a message is parsed
4 ## into. Chunks are used by ThreadViewMode to render a message. Chunks
5 ## are used for both MIME stuff like attachments, for Sup's parsing of
6 ## the message body into text, quote, and signature regions, and for
7 ## notices like "this message was decrypted" or "this message contains
8 ## a valid signature"---basically, anything we want to differentiate
11 ## A chunk can be inlineable, expandable, or viewable. If it's
12 ## inlineable, #color and #lines are called and the output is treated
13 ## as part of the message text. This is how Text and one-line Quotes
14 ## and Signatures work.
16 ## If it's not inlineable but is expandable, #patina_color and
17 ## #patina_text are called to generate a "patina" (a one-line widget,
18 ## basically), and the user can press enter to toggle the display of
19 ## the chunk content, which is generated from #color and #lines as
20 ## above. This is how Quote, Signature, and most widgets
21 ## work. Exandable chunks can additionally define #initial_state to be
22 ## :open if they want to start expanded (default is to start collapsed).
24 ## If it's not expandable but is viewable, a patina is displayed using
25 ## #patina_color and #patina_text, but no toggling is allowed. Instead,
26 ## if #view! is defined, pressing enter on the widget calls view! and
27 ## (if that returns false) #to_s. Otherwise, enter does nothing. This
28 ## is how non-inlineable attachments work.
30 ## Independent of all that, a chunk can be quotable, in which case it's
31 ## included as quoted text during a reply. Text, Quotes, and mime-parsed
32 ## attachments are quotable; Signatures are not.
37 HookManager.register "mime-decode", <<EOS
38 Executes when decoding a MIME attachment.
40 content_type: the content-type of the message
41 filename: the filename of the attachment as saved to disk
42 sibling_types: if this attachment is part of a multipart MIME attachment,
43 an array of content-types for all attachments. Otherwise,
46 The decoded text of the attachment, or nil if not decoded.
50 ## raw_content is the post-MIME-decode content. this is used for
51 ## saving the attachment to disk.
52 attr_reader :content_type, :filename, :lines, :raw_content
55 def initialize content_type, filename, encoded_content, sibling_types
56 @content_type = content_type
58 @quotable = false # changed to true if we can parse it through the
59 # mime-decode hook, or if it's plain text
61 if encoded_content.body
62 encoded_content.decode
64 "For some bizarre reason, RubyMail was unable to parse this attachment.\n"
71 Message.convert_from(@raw_content, encoded_content.charset).split("\n")
73 text = HookManager.run "mime-decode", :content_type => content_type,
74 :filename => lambda { write_to_disk },
75 :sibling_types => sibling_types
84 def patina_color; :attachment_color end
87 "Attachment: #{filename} (#{lines.length} lines)"
89 "Attachment: #{filename} (#{content_type})"
93 ## an attachment is exapndable if we've managed to decode it into
94 ## something we can display inline. otherwise, it's viewable.
95 def inlineable?; false end
96 def expandable?; !viewable? end
97 def initial_state; :open end
98 def viewable?; @lines.nil? end
101 system "/usr/bin/run-mailcap --action=view #{@content_type}:#{path} > /dev/null 2> /dev/null"
108 File.open File.join(Dir::tmpdir, @filename), "w"
110 Tempfile.new "redwood.attachment"
113 file.print @raw_content
118 ## used when viewing the attachment as text
120 @lines || @raw_content
125 WRAP_LEN = 80 # wrap at this width
129 @lines = lines.map { |l| l.chomp.wrap WRAP_LEN }.flatten # wrap
131 ## trim off all empty lines except one
132 @lines.pop while @lines.length > 1 && @lines[-1] =~ /^\s*$/ && @lines[-2] =~ /^\s*$/
135 def inlineable?; true end
136 def quotable?; true end
137 def expandable?; false end
138 def viewable?; false end
148 def inlineable?; @lines.length == 1 end
149 def quotable?; true end
150 def expandable?; !inlineable? end
151 def viewable?; false end
153 def patina_color; :quote_patina_color end
154 def patina_text; "(#{lines.length} quoted lines)" end
155 def color; :quote_color end
164 def inlineable?; @lines.length == 1 end
165 def quotable?; false end
166 def expandable?; !inlineable? end
167 def viewable?; false end
169 def patina_color; :sig_patina_color end
170 def patina_text; "(#{lines.length}-line signature)" end
171 def color; :sig_color end
174 class EnclosedMessage
176 def initialize from, body
178 @lines = body.split "\n"
182 @from ? @from.longname : "unknown sender"
185 def inlineable?; false end
186 def quotable?; false end
187 def expandable?; true end
188 def initial_state; :open end
189 def viewable?; false end
191 def patina_color; :generic_notice_patina_color end
192 def patina_text; "Begin enclosed message from #{from} (#{@lines.length} lines)" end
194 def color; :quote_color end
198 attr_reader :lines, :status, :patina_text
200 def initialize status, description, lines=[]
202 @patina_text = description
208 when :valid: :cryptosig_valid_color
209 when :invalid: :cryptosig_invalid_color
210 else :cryptosig_unknown_color
213 def color; patina_color end
215 def inlineable?; false end
216 def quotable?; false end
217 def expandable?; !@lines.empty? end
218 def viewable?; false end