-[[!tag type/chrome patch]]
+[[!tag patch]]
+[[!template id=gitbranch branch=smcv/trail3 author="[[smcv]]"]]
-Available from [[smcv]]'s git repository, in the `trail` branch. This
-plugin aims to solve [[todo/wikitrails]] in a simpler way.
+Available from [[smcv]]'s git repository, in the `trail3` branch. This
+plugin aims to solve [[todo/wikitrails]] in a simpler way; it can also be
+used for [[navigation through blog posts|todo/Pagination_next_prev_links]].
-Joey: what do you think of this plugin? If you like the general approach
-and are likely to include it in ikiwiki, I'll try to modify
-[[plugins/contrib/album]] to be based on it, rather than partially
-reinventing it.
+If you don't want to use a branch of ikiwiki, manual installation requires
+these files (use the "raw" link in gitweb to download):
-This plugin can benefit from
-[[another_of_my_branches|todo/inline_plugin:_specifying_ordered_page_names]]
-but does not require it.
+* [trail.pm](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/trail3:/IkiWiki/Plugin/trail.pm)
+ in an `IkiWiki/Plugin` subdirectory of your configured `plugindir`
+* [page.tmpl](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/trail3:/templates/page.tmpl)
+ and
+ [trails.tmpl](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/trail3:/templates/trails.tmpl)
+ in your configured `templatedir`, or a `templates` subdirectory of your wiki repository
+* the trail-related bits from the end of the
+ [stylesheet](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/trail3:/doc/style.css)
+ (put them in your local.css)
+* the trail-related bits at the end of the
+ [actiontabs](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/trail3:/themes/actiontabs/style.css)
+ or [blueview/goldtype](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/trail3:/themes/blueview/style.css)
+ stylesheets, if you use one of those themes (again, put them in your local.css)
+
+The branch also includes [[todo/test_coverage]] machinery.
+
+Demo:
+
+* [in use on entries in my blog](http://smcv.pseudorandom.co.uk/)
+* [a demo trail based on links](http://demo.hosted.pseudorandom.co.uk/trail/)
+* [a demo hybrid trail/inline](http://demo.hosted.pseudorandom.co.uk/trail2/)
+
+The page `e` is in both demo trails, to demonstrate how a page in more than
+one trail looks.
+
+The `smcv/trail2` branch is an older version of `trail3` which used typed links
+as its data structure, resulting in timing-related limitations (it couldn't
+select pages for the trail by using pagespecs, because pagespecs can't be
+evaluated correctly until the scan stage has finished).
+
+Updated, November 2011:
+
+* reinstated `inline` integration ([[report]] integration would probably be
+ pretty easy too, if this gets merged)
+* switched from typed links back to a custom data structure to avoid
+ chicken/egg problems with ordering
+* create typed links too, as a side-effect, but not when using an inline
+* regression test with nearly full coverage
+* CSS for the default anti-theme and all built-in themes (it looks nicest
+ in the default anti-theme and in actiontabs - the demo uses actiontabs)
+
+Known bugs:
+
+* the blueview and goldtype CSS nearly work, but the alignment is a bit off
----
[[!template id=plugin name=trail author="[[Simon_McVittie|smcv]]"]]
+[[!tag type/chrome]]
+
+This plugin provides the [[ikiwiki/directive/trailoptions]],
+[[ikiwiki/directive/traillink]], [[ikiwiki/directive/trailitem]],
+[[ikiwiki/directive/trailitems]]
+and [[ikiwiki/directive/trailinline]] [[directives|ikiwiki/directive]].
-It's sometimes useful to have "trails" of pages in a wiki, as a guided
-tour, sequence of chapters etc. In this plugin, a trail is represented
-by a page, and the pages in the trail are indicated by specially marked
-links within that page.
+It's sometimes useful to have "trails" of pages in a wiki where each
+page links to the next and/or previous page. For instance, you could use
+this for a guided tour, sequence of chapters, or sequence of blog posts.
+
+In this plugin, a trail is represented by a page, and the pages in the
+trail are indicated by specially marked links within that page, or by
+including groups of pages with a [[ikiwiki/directive]].
If using the default `page.tmpl`, each page automatically displays the
trails that it's a member of (if any), with links to the trail and to
-the next and previous members.
+the next and previous members. HTML `<link>` tags with the `prev`,
+`next` and `up` relations are also generated.
+
+The [[ikiwiki/directive/trailoptions]] directive sets options for the
+entire trail.
+
+Pages can be included in a trail in various ways:
+
+* The [[ikiwiki/directive/trailinline]] directive sets up an [[inline]],
+ and at the same time adds the matching pages (from `pages` or `pagenames`)
+ to the trail. One use is to navigate through all posts in a blog:
+
+ \[[!trailinline pages="page(./posts/*) and !*/Discussion" archive=yes
+ feedshow=10 quick=yes]]
+
+ This directive only works if the [[!iki plugins/inline desc=inline]]
+ plugin is also enabled.
-The `traillink` [[ikiwiki/directive]] is used to record which pages
-are in a trail, and simultaneously link to them. Alternatively, the
-[[ikiwiki/directive/inline]] directive can be used with `trail=yes`
-to record the inlined pages as part of the trail, in the order in
-which they are inlined.
+* The [[ikiwiki/directive/trailitems]] directive has optional `pages` and
+ `pagenames` options which behave the same as in [[inline]], but don't
+ produce any output in the page, so you can have trails that don't list
+ all their pages.
-## Directives
+* The [[ikiwiki/directive/traillink]] directive makes a visible link
+ and also adds the linked page to the trail. This will typically be
+ used in a bullet list, but could also be in paragraph text:
-(These will go to the appropriate pages in [[ikiwiki/directive]] if this
-plugin is included in ikiwiki.)
+ * [[!traillink Introduction]]
+ * [[!traillink "Chapter 1"]]
+ * [[!traillink Chapter_2]]
+ * [[!traillink Appendix_A]]
-### traillink
+ or
-The `traillink` directive is supplied by the [[!iki plugins/contrib/trail desc=trail]]
-plugin. This directive appears on the page representing a trail. It acts
-as a visible [[ikiwiki/WikiLink]], but also records the linked page as
-a member of the trail.
+ To use this software you must \[[!traillink install]] it,
+ \[[!traillink configuration text="configure it"]],
+ and finally \[[!traillink running|run_it]].
-Various syntaxes can be used:
+ This also counts as a [[ikiwiki/WikiLink]] for things like the `link()`
+ [[ikiwiki/PageSpec]] item.
- \[[!traillink Badgers]]
- \[[!traillink How_to_find_mushrooms_using_badgers|badgers]]
- \[[!traillink badgers text="How to find mushrooms using badgers"]]
+* The [[ikiwiki/directive/trailitem]] directive adds a page to the trail
+ like `traillink`, but produces an invisible link, rather like `\[[!tag]]`:
-### trailoptions
+ To use this software you must \[[!traillink install]] it,
+ \[[!trailitem installing_from_packages]]
+ \[[!trailitem installing_from_source]]
+ \[[!traillink configuration text="configure it"]],
+ and finally \[[!traillink running|run_it]].
+ \[[!trailitem troubleshooting]]
-The `trailoptions` directive is supplied by the [[!iki plugins/contrib/trail desc=trail]]
-plugin. This directive appears on the page representing a trail, and
-produces no output.
+ Like `\[[!tag]]`, this still counts as a [[ikiwiki/WikiLink]] even though
+ there's no visible link.
-Currently, the only option supported is `[[!trailoptions circular=yes]]`,
-which adds links between the first and last pages, turning the trail into
-a circle.
+You can mix several of these directives in one page. The resulting
+trail will contain all of the pages matched by any of the directives,
+in the same order that the directives appear (unless you use the `sort` or
+`reverse` options on `\[[!trailoptions]]`).