From e2c224bb18b31a8dc1d5d54bbbc6591526d882f8 Mon Sep 17 00:00:00 2001
From: Yuichi HARADA <harada@example.com>
Date: Tue, 16 Feb 2021 11:40:12 +0900
Subject: [PATCH 3/3] Identify the subject and taskbar line

---
 app/views/gantts/change_duration.js.erb |  9 ++++++++-
 lib/redmine/helpers/gantt.rb            |  7 ++++++-
 public/javascripts/gantt.js             | 10 ++++++----
 3 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/app/views/gantts/change_duration.js.erb b/app/views/gantts/change_duration.js.erb
index 26d1e8a60..113ee8c46 100644
--- a/app/views/gantts/change_duration.js.erb
+++ b/app/views/gantts/change_duration.js.erb
@@ -53,7 +53,14 @@ gantt.query = @query
   subject_content = subject_content.css(css_subject).to_s.tr("\n",'').gsub(/'/, "\\\\'")
 -%>
 if($('<%= elm_subject %>').length){
-  $('<%= elm_todo %>').parent().html('<%= raw(todo_content) %>');
+  $('<%= elm_todo %>').each(function(_, task) {
+    var el_parent = $(task).parent();
+    el_parent.html('<%= raw(todo_content) %>');
+    var number_of_rows = el_parent.attr('data-number-of-rows');
+    if(number_of_rows){
+      el_parent.find('div[data-number-of-rows]').attr('data-number-of-rows', number_of_rows);
+    }
+  });
   $('<%= elm_subject %>').replaceWith('<%= raw(subject_content) %>');
 <%
   case obj
diff --git a/lib/redmine/helpers/gantt.rb b/lib/redmine/helpers/gantt.rb
index ccc249fab..d9f25fc05 100644
--- a/lib/redmine/helpers/gantt.rb
+++ b/lib/redmine/helpers/gantt.rb
@@ -347,6 +347,7 @@ module Redmine
         if options[:format] == :html
           data_options = {}
           data_options[:collapse_expand] = "issue-#{issue.id}"
+          data_options[:number_of_rows] = number_of_rows
           style = "position: absolute;top: #{options[:top]}px; font-size: 0.8em;"
           content =
             view.content_tag(
@@ -781,6 +782,7 @@ module Redmine
               :top_increment => params[:top_increment],
               :obj_id => "#{object.class}-#{object.id}".downcase,
             },
+            :number_of_rows => number_of_rows,
           }
         end
         if has_children
@@ -836,7 +838,10 @@ module Redmine
       def html_task(params, coords, markers, label, object)
         output = +''
         data_options = {}
-        data_options[:collapse_expand] = "#{object.class}-#{object.id}".downcase if object
+        if object
+          data_options[:collapse_expand] = "#{object.class}-#{object.id}".downcase
+          data_options[:number_of_rows] = number_of_rows
+        end
         css = "task " +
           case object
           when Project
diff --git a/public/javascripts/gantt.js b/public/javascripts/gantt.js
index 2b292af76..d78da372a 100644
--- a/public/javascripts/gantt.js
+++ b/public/javascripts/gantt.js
@@ -255,13 +255,16 @@ ganttEntryClick = function(e){
   subject.nextAll('div').each(function(_, element){
     var el = $(element);
     var json = el.data('collapse-expand');
+    var number_of_rows = el.data('number-of-rows');
+    var el_task_bars = '#gantt_area form > div[data-collapse-expand="' + json.obj_id + '"][data-number-of-rows="' + number_of_rows + '"]';
+    var el_selected_columns = 'td.gantt_selected_column div[data-collapse-expand="' + json.obj_id + '"][data-number-of-rows="' + number_of_rows + '"]';
     if(out_of_hierarchy || parseInt(el.css('left')) <= subject_left){
       out_of_hierarchy = true;
       if(target_shown == null) return false;
 
       var new_top_val = parseInt(el.css('top')) + total_height * (target_shown ? -1 : 1);
       el.css('top', new_top_val);
-      $('#gantt_area form > div[data-collapse-expand="' + json.obj_id + '"], td.gantt_selected_column div[data-collapse-expand="' + json.obj_id + '"]').each(function(_, el){
+      $([el_task_bars, el_selected_columns].join()).each(function(_, el){
         $(el).css('top', new_top_val);
       });
       return true;
@@ -274,15 +277,14 @@ ganttEntryClick = function(e){
       total_height = 0;
     }
     if(is_shown == target_shown){
-      $('#gantt_area form > div[data-collapse-expand="' + json.obj_id + '"]').each(function(_, task) {
+      $(el_task_bars).each(function(_, task) {
         var el_task = $(task);
         if(!is_shown)
           el_task.css('top', target_top + total_height);
         if(!el_task.hasClass('tooltip'))
           el_task.toggle(!is_shown);
       });
-      $('td.gantt_selected_column div[data-collapse-expand="' + json.obj_id + '"]'
-          ).each(function (_, attr) {
+      $(el_selected_columns).each(function (_, attr) {
         var el_attr = $(attr);
         if (!is_shown)
           el_attr.css('top', target_top + total_height);
-- 
2.24.3 (Apple Git-128)