chore: add truncate option to show and download component

app/components/attachment/show_component.rb

@@ -1,10 +1,11 @@
 class Attachment::ShowComponent < ApplicationComponent
-  def initialize(attachment:, new_tab: false)
+  def initialize(attachment:, new_tab: false, truncate: false)
     @attachment = attachment
     @new_tab = new_tab
+    @truncate = truncate
   end
 
-  attr_reader :attachment, :new_tab
+  attr_reader :attachment, :new_tab, :truncate
 
   def should_display_link?
     (attachment.virus_scanner.safe? || !attachment.virus_scanner.started?) && !attachment.watermark_pending?

app/components/attachment/show_component/show_component.html.haml

@@ -1,6 +1,6 @@
 %div{ id: dom_id(attachment, :show), class: class_names("attachment-error": error?, "fr-mb-2w": !should_display_link?) }
   - if should_display_link?
-    = render Dsfr::DownloadComponent.new(attachment: attachment, virus_not_analyzed: !attachment.virus_scanner.started?, new_tab: new_tab)
+    = render Dsfr::DownloadComponent.new(attachment: attachment, virus_not_analyzed: !attachment.virus_scanner.started?, new_tab: new_tab, truncate: truncate)
 
   - else
     .attachment-filename.fr-mb-1w.fr-mr-1w= attachment.filename.to_s

app/components/dsfr/download_component.rb

@@ -5,14 +5,16 @@ class Dsfr::DownloadComponent < ApplicationComponent
   attr_reader :ephemeral_link
   attr_reader :virus_not_analyzed
   attr_reader :new_tab
+  attr_reader :truncate
 
-  def initialize(attachment:, name: nil, url: nil, ephemeral_link: false, virus_not_analyzed: false, new_tab: false)
+  def initialize(attachment:, name: nil, url: nil, ephemeral_link: false, virus_not_analyzed: false, new_tab: false, truncate: false)
     @attachment = attachment
     @name = name || attachment.filename.to_s
     @url = url
     @ephemeral_link = ephemeral_link
     @virus_not_analyzed = virus_not_analyzed
     @new_tab = new_tab
+    @truncate = truncate
   end
 
   def title

app/components/dsfr/download_component/download_component.html.haml

@@ -1,7 +1,7 @@
 .fr-download
   %p
     = link_to url, {class: "fr-download__link", title: title}.merge(new_tab ? { target: '_blank' }   : { download: '' }) do
-      = name
+      = truncate ? name.truncate(20) : name
       %span.fr-download__detail
         = helpers.download_details(attachment)
     - if ephemeral_link