Implement request diff for webui2 view

src/api/app/views/webui2/webui/package/_revision_diff_detail.html.haml

@@ -1,5 +1,5 @@
 .position-relative
-  = render partial: 'revision_diff_detail_buttons',
+  = render partial: 'webui2/webui/package/revision_diff_detail_buttons',
   locals: { project: project,
     package: package,
     filename: filename,

src/api/app/views/webui2/webui/request/_sourcediff_tab.html.haml

@@ -0,0 +1,41 @@
+.row
+  .col
+    %b
+      = request_action_header(action, request_creator)
+- if action[:type] == :maintenance_incident && action[:releaseproject]
+  %i
+    Release in #{action[:releaseproject]}
+%hr
+.row
+  - (action[:sourcediff] || []).each do |sourcediff|
+    .col-md-8
+      - if sourcediff[:error]
+        %p
+          %i.error
+            = sourcediff[:error]
+      - else
+        - if action[:sourcediff].length > 1
+          %h4
+            #{diff_label(sourcediff['new'])} – #{diff_label(sourcediff['old'])}
+        - files = sourcediff['files']
+        - diff = diff_data(action[:type], sourcediff)
+        - if sourcediff['filenames'].present?
+          - sourcediff['filenames'].each_with_index do |filename, file_index|
+            .mb-2
+              = render partial: 'webui2/webui/package/revision_diff_detail',
+                locals: { project: diff[:project],
+                package: diff[:package],
+                filename: filename,
+                file: files[filename],
+                diff_content: files[filename].dig('diff', '_content'),
+                revision: diff[:rev],
+                index: file_index,
+                last: sourcediff['filenames'].last == filename }
+        - else
+          .mb-2
+            %p.lead
+              No source changes.
+    .col-md-4
+      = render partial: 'webui2/shared/buildresult_box', locals: { project: action[:sprj], package: action[:spkg], index: index }
+      - if sourcediff['issues'].present?
+        = render partial: 'issues_table', locals: { issues: sourcediff['issues'] }

src/api/app/views/webui2/webui/request/show.html.haml

@@ -1,23 +1,27 @@
+- content_for(:content_for_head, javascript_include_tag('webui2/cm2/index-diff'))
+
+- if @not_full_diff
+  = render partial: 'webui2/shared/truncated_diff_hint',
+  locals: { path: request_show_path(number: @number, full_diff: true) }
+
 .card.mb-3
   .card-header.d-flex.justify-content-between
     %h5
       Overview
   .card-body
     -# description content
 .card.mb-3
-  .card-header.d-flex.justify-content-between
-    %h5
-      Diff
+  .bg-light
+    %ul.nav.nav-tabs{ role: 'tablist' }
+      - @actions.each_with_index do |action, index|
+        %li.nav-item
+          = link_to(action[:name], "##{valid_xml_id(action[:name])}", class: "nav-link text-nowrap #{('active' if index.zero?)}",
+            data: { toggle: 'tab' }, role: 'tab')
   .card-body
-    - @actions.each_with_index do |action, action_index|
-      - action[:sourcediff].each do |sourcediff|
-        .row
-          .col-md-8
-            Diff content
-          .col-md-4
-            = render partial: 'webui2/shared/buildresult_box', locals: { project: action[:sprj], package: action[:spkg], index: action_index }
-            - if sourcediff['issues'].present?
-              = render partial: 'issues_table', locals: { issues: sourcediff['issues'] }
+    .tab-content
+      - @actions.each_with_index do |action, index|
+        .tab-pane.fade.show{ id: valid_xml_id(action[:name]), class: ('active' if index.zero?) }
+          = render('sourcediff_tab', action: action, request_creator: @bs_request.creator, index: index)
 .row
   .col-md-8
     .card