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.
28 ## Independent of all that, a chunk can be quotable, in which case it's
29 ## included as quoted text during a reply. Text, Quotes, and mime-parsed
30 ## attachments are quotable; Signatures are not.
35 HookManager.register "mime-decode", <<EOS
36 Executes when decoding a MIME attachment.
38 content_type: the content-type of the message
39 filename: the filename of the attachment as saved to disk (generated
40 on the fly, so don't call more than once)
41 sibling_types: if this attachment is part of a multipart MIME attachment,
42 an array of content-types for all attachments. Otherwise,
45 The decoded text of the attachment, or nil if not decoded.
49 ## raw_content is the post-MIME-decode content. this is used for
50 ## saving the attachment to disk.
51 attr_reader :content_type, :filename, :lines, :raw_content
54 def initialize content_type, filename, encoded_content, sibling_types
55 @content_type = content_type
57 @quotable = false # only quotable if we can parse it through the mime-decode hook
59 if encoded_content.body
60 encoded_content.decode
62 "For some bizarre reason, RubyMail was unable to parse this attachment.\n"
68 Message.convert_from(@raw_content, encoded_content.charset).split("\n")
70 text = HookManager.run "mime-decode", :content_type => content_type,
71 :filename => lambda { write_to_disk },
72 :sibling_types => sibling_types
81 def patina_color; :attachment_color end
84 "Attachment: #{filename} (#{lines.length} lines)"
86 "Attachment: #{filename} (#{content_type})"
90 ## an attachment is exapndable if we've managed to decode it into
91 ## something we can display inline. otherwise, it's viewable.
92 def inlineable?; false end
93 def expandable?; !viewable? end
94 def initial_state; :open end
95 def viewable?; @lines.nil? end
98 system "/usr/bin/run-mailcap --action=view #{@content_type}:#{path} > /dev/null 2> /dev/null"
103 file = Tempfile.new "redwood.attachment"
104 file.print @raw_content
109 ## used when viewing the attachment as text
111 @lines || @raw_content
116 WRAP_LEN = 80 # wrap at this width
120 @lines = lines.map { |l| l.chomp.wrap WRAP_LEN }.flatten # wrap
122 ## trim off all empty lines except one
123 @lines.pop while @lines.length > 1 && @lines[-1] =~ /^\s*$/ && @lines[-2] =~ /^\s*$/
126 def inlineable?; true end
127 def quotable?; true end
128 def expandable?; false end
129 def viewable?; false end
139 def inlineable?; @lines.length == 1 end
140 def quotable?; true end
141 def expandable?; !inlineable? end
142 def viewable?; false end
144 def patina_color; :quote_patina_color end
145 def patina_text; "(#{lines.length} quoted lines)" end
146 def color; :quote_color end
155 def inlineable?; @lines.length == 1 end
156 def quotable?; false end
157 def expandable?; !inlineable? end
158 def viewable?; false end
160 def patina_color; :sig_patina_color end
161 def patina_text; "(#{lines.length}-line signature)" end
162 def color; :sig_color end
165 class EnclosedMessage
167 def initialize from, body
169 @lines = body.split "\n"
173 @from ? @from.longname : "unknown sender"
176 def inlineable?; false end
177 def quotable?; false end
178 def expandable?; true end
179 def initial_state; :open end
180 def viewable?; false end
182 def patina_color; :generic_notice_patina_color end
183 def patina_text; "Begin enclosed message from #{from} (#{@lines.length} lines)" end
185 def color; :quote_color end
189 attr_reader :lines, :status, :patina_text
191 def initialize status, description, lines=[]
193 @patina_text = description
199 when :valid: :cryptosig_valid_color
200 when :invalid: :cryptosig_invalid_color
201 else :cryptosig_unknown_color
204 def color; patina_color end
206 def inlineable?; false end
207 def quotable?; false end
208 def expandable?; !@lines.empty? end
209 def viewable?; false end