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# frozen_string_literal: true
module Banzai
module Filter
# HTML filter that replaces label references with links.
class LabelReferenceFilter < AbstractReferenceFilter
self.reference_type = :label
def self.object_class
Label
end
def find_object(parent_object, id)
find_labels(parent_object).find(id)
end
def references_in(text, pattern = Label.reference_pattern)
labels = {}
unescaped_html = unescape_html_entities(text).gsub(pattern) do |match|
namespace, project = $~[:namespace], $~[:project]
project_path = full_project_path(namespace, project)
label = find_label_cached(project_path, $~[:label_id], $~[:label_name])
if label
labels[label.id] = yield match, label.id, project, namespace, $~
"#{REFERENCE_PLACEHOLDER}#{label.id}"
else
match
end
end
return text if labels.empty?
escape_with_placeholders(unescaped_html, labels)
end
def find_label_cached(parent_ref, label_id, label_name)
cached_call(:banzai_find_label_cached, label_name&.tr('"', '') || label_id, path: [object_class, parent_ref]) do
find_label(parent_ref, label_id, label_name)
end
end
def find_label(parent_ref, label_id, label_name)
parent = parent_from_ref(parent_ref)
return unless parent
label_params = label_params(label_id, label_name)
find_labels(parent).find_by(label_params)
end
def find_labels(parent)
params = if parent.is_a?(Group)
{ group_id: parent.id,
include_ancestor_groups: true,
only_group_labels: true }
else
{ project: parent,
include_ancestor_groups: true }
end
LabelsFinder.new(nil, params).execute(skip_authorization: true)
end
# Parameters to pass to `Label.find_by` based on the given arguments
#
# id - Integer ID to pass. If present, returns {id: id}
# name - String name to pass. If `id` is absent, finds by name without
# surrounding quotes.
#
# Returns a Hash.
def label_params(id, name)
if name
{ name: name.tr('"', '') }
else
{ id: id.to_i }
end
end
def url_for_object(label, parent)
label_url_method =
if context[:label_url_method]
context[:label_url_method]
elsif parent.is_a?(Project)
:project_issues_url
end
return unless label_url_method
Gitlab::Routing.url_helpers.public_send(label_url_method, parent, label_name: label.name, only_path: context[:only_path]) # rubocop:disable GitlabSecurity/PublicSend
end
def object_link_text(object, matches)
label_suffix = ''
parent = project || group
if project || full_path_ref?(matches)
project_path = full_project_path(matches[:namespace], matches[:project])
parent_from_ref = from_ref_cached(project_path)
reference = parent_from_ref.to_human_reference(parent)
label_suffix = " <i>in #{ERB::Util.html_escape(reference)}</i>" if reference.present?
end
presenter = object.present(issuable_subject: parent)
LabelsHelper.render_colored_label(presenter, suffix: label_suffix)
end
def wrap_link(link, label)
presenter = label.present(issuable_subject: project || group)
LabelsHelper.wrap_label_html(link, small: true, label: presenter)
end
def full_path_ref?(matches)
matches[:namespace] && matches[:project]
end
def reference_class(type, tooltip: true)
super + ' gl-link gl-label-link'
end
def object_link_title(object, matches)
presenter = object.present(issuable_subject: project || group)
LabelsHelper.label_tooltip_title(presenter)
end
end
end
end
Banzai::Filter::LabelReferenceFilter.prepend_if_ee('EE::Banzai::Filter::LabelReferenceFilter')
|
