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mu: calculate thread subjects

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Calculate the thread subject, that is, the subject of the (sub)thread _or_
empty if it's the same as the previous subject.

This is for the UI feature of _not_ showing the subject when it's just
repeating from the previous.
This commit is contained in:
Dirk-Jan C. Binnema
2021-05-04 17:34:47 +03:00
parent 6d67e146fe
commit 473d3998ce
3 changed files with 28 additions and 17 deletions
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24
lib/mu-query-threads.cc
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@ -394,11 +394,20 @@ update_container (Container& container, bool descending,
if (!container.children.empty())
qmatch.flags |= QueryMatch::Flags::HasChild;
// calculate the "thread-subject", which is for UI
// purposes (future use)
// see whether this message has the has the thread
// subject, ie.. the first message in this thread with the
// given subject.
if (qmatch.has_flag(QueryMatch::Flags::Root) ||
//qmatch.has_flag(QueryMatch::Flags::Orphan) ||
prev_subject.empty() ||
(qmatch.subject.find(prev_subject) > 5))
qmatch.flags |= QueryMatch::Flags::ThreadSubject;
qmatch.flags |= QueryMatch::Flags::ThreadSubject;
// g_debug ("%c%c: '%s' vs '%s'",
// any_of(qmatch.flags & QueryMatch::Flags::Root) ? 'r' : 'c',
// any_of(qmatch.flags & QueryMatch::Flags::ThreadSubject) ? 'y' : 'n',
// qmatch.subject.c_str(),
// prev_subject.c_str());
if (descending && container.parent) {
// trick xapian by giving it "inverse" sorting key so our
@ -422,13 +431,16 @@ update_containers (Containers& children, bool descending, ThreadPath& tpath,
size_t seg_size)
{
size_t idx{0};
std::string last_subject;
for (auto&& c: children) {
tpath.emplace_back(idx++);
if (c->query_match)
update_container(*c, descending, tpath, seg_size);
if (c->query_match) {
update_container(*c, descending, tpath, seg_size,
last_subject);
last_subject = c->query_match->subject;
}
update_containers(c->children, descending, tpath, seg_size);
tpath.pop_back();
}