diff options
Diffstat (limited to 'lib/banzai/filter/references/label_reference_filter.rb')
| -rw-r--r-- | lib/banzai/filter/references/label_reference_filter.rb | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/lib/banzai/filter/references/label_reference_filter.rb b/lib/banzai/filter/references/label_reference_filter.rb new file mode 100644 index 00000000000..8508aa2b3c3 --- /dev/null +++ b/lib/banzai/filter/references/label_reference_filter.rb @@ -0,0 +1,131 @@ +# frozen_string_literal: true + +module Banzai + module Filter + module References + # 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 +end + +Banzai::Filter::References::LabelReferenceFilter.prepend_if_ee('EE::Banzai::Filter::References::LabelReferenceFilter') |