view mercurial/templates/map-cmdline.show @ 33046:11f768258dcc

show: construct changeset templater during dispatch

Previously, we constructed a formatter from a specific template
topic. Then from show() we reached into the internals of the
formatter to resolve a template string to be used to construct
a changeset templater.

A downside to this approach was it limited us to having the
entire template defined in a single entry in the map file. You
couldn't reference other entries in the map file and this would
lead to long templates and redundancy in the map file.

This commit teaches @showview how to instantiate a changeset
templater so we can construct a templater with full access to
the map file. To prove it works, we've split "showwork" into
components.

# TODO there are a few deficiencies in this file:
# * The "namespace" of the labels needs to be worked out. We currently
#   piggyback on existing values so color works.
# * Obsolescence isn't considered for node labels. See _cset_labels in
#   map-cmdline.default.
showbookmarks = '{if(active, "*", " ")} {pad(bookmark, longestbookmarklen + 4)}{shortest(node, 5)}\n'

showwork = '{cset_shortnode}{cset_names} {cset_shortdesc}'

cset_shortnode = '{label("log.changeset changeset.{phase}", shortest(node, 5))}'
cset_names = '{if(branches, " ({label("log.branch", branch)})")}{if(bookmarks, " ({label("log.bookmarks", bookmarks)})")}'
cset_shortdesc = '{label("log.description", desc|firstline)}'