label.pl -- Support for showing labels

This module provides HTML components to display labels for resources.

See also: - library(semweb/rdf_label) returns textual labels.

turtle_label(+RDFTerm)// is det

HTML rule to emit an RDF term (resource or object) in turtle-like notation with CSS classes.

To be done: - Implement possibility for a summary.

rdf_link(+URI)// is det

rdf_link(+URI, +Options)// is det

Make a hyper-link to an arbitrary RDF resource or object using the label. Options processed:

resource_format(+Format)

Determines peference for displaying resources. Values are:

plain: Display full resource a plain text
label: Try to display a resource using its label
nslabel: Try to display a resource as <prefix>:<Label>

max_length(+Len)

Truncate long texts to Len characters, using ellipses to indicate that the text is truncated.

target(+Target)

Passed to the HTML <a> element as target attribute.

This predicate creates two types of links. Resources are linked to the handler implementing list_resource using r=<resource> and literals that appear multiple times are linked to list_triples_with_object using a Prolog representation of the literal.

This predicate can be hooked using display_link//2.

To be done: - Make it easier to determine the format of the label; - Allow linking to different handlers.

resource_link(+URI, -URL) is det

Generate a link to display more information about a resource. The default is to link to the HTTP handler implementing list_resource using the parameter r. See cpa_browse:list_resource/1. This predicate calls the hook resource_link/2, which allows for overruling the default.