From 851a18c3d6dbceb0c58291f4db543b51b627a663 Mon Sep 17 00:00:00 2001
From: krassowski <5832902+krassowski@users.noreply.github.com>
Date: Mon, 31 Oct 2022 03:56:13 +0000
Subject: [PATCH] Add cell-id anchor for cell identification

---
 share/templates/base/cell_id_anchor.j2 | 5 +++++
 share/templates/classic/base.html.j2   | 5 +++--
 share/templates/lab/base.html.j2       | 5 +++--
 3 files changed, 11 insertions(+), 4 deletions(-)
 create mode 100644 share/templates/base/cell_id_anchor.j2

diff --git a/share/templates/base/cell_id_anchor.j2 b/share/templates/base/cell_id_anchor.j2
new file mode 100644
index 000000000..b090895b1
--- /dev/null
+++ b/share/templates/base/cell_id_anchor.j2
@@ -0,0 +1,5 @@
+{%- macro cell_id_anchor(cell) -%}
+    {% if cell.id | length > 0 -%}
+        id="{{ ('cell-id=' ~ cell.id) | escape_html -}}"
+    {%- endif %}
+{%- endmacro %}
diff --git a/share/templates/classic/base.html.j2 b/share/templates/classic/base.html.j2
index f5fe280c3..640067bf8 100644
--- a/share/templates/classic/base.html.j2
+++ b/share/templates/classic/base.html.j2
@@ -1,8 +1,9 @@
 {%- extends 'display_priority.j2' -%}
 {% from 'celltags.j2' import celltags %}
+{% from 'cell_id_anchor.j2' import cell_id_anchor %}
 
 {% block codecell %}
-<div class="cell border-box-sizing code_cell rendered{{ celltags(cell) }}">
+<div {{ cell_id_anchor(cell) }} class="cell border-box-sizing code_cell rendered{{ celltags(cell) }}">
 {{ super() }}
 </div>
 {%- endblock codecell %}
@@ -75,7 +76,7 @@
 {% endblock output %}
 
 {% block markdowncell scoped %}
-<div class="cell border-box-sizing text_cell rendered{{ celltags(cell) }}">
+<div {{ cell_id_anchor(cell) }} class="cell border-box-sizing text_cell rendered{{ celltags(cell) }}">
 {%- if resources.global_content_filter.include_input_prompt-%}
     {{ self.empty_in_prompt() }}
 {%- endif -%}
diff --git a/share/templates/lab/base.html.j2 b/share/templates/lab/base.html.j2
index 248b1edf9..bde59787f 100644
--- a/share/templates/lab/base.html.j2
+++ b/share/templates/lab/base.html.j2
@@ -1,5 +1,6 @@
 {%- extends 'display_priority.j2' -%}
 {% from 'celltags.j2' import celltags %}
+{% from 'cell_id_anchor.j2' import cell_id_anchor %}
 
 {% block codecell %}
 {%- if not cell.outputs -%}
@@ -8,7 +9,7 @@
 {%- if not resources.global_content_filter.include_input -%}
 {%- set no_input_class="jp-mod-noInput" -%}
 {%- endif -%}
-<div class="jp-Cell jp-CodeCell jp-Notebook-cell {{ no_output_class }} {{ no_input_class }} {{ celltags(cell) }}">
+<div {{ cell_id_anchor(cell) }} class="jp-Cell jp-CodeCell jp-Notebook-cell {{ no_output_class }} {{ no_input_class }} {{ celltags(cell) }}">
 {{ super() }}
 </div>
 {%- endblock codecell %}
@@ -93,7 +94,7 @@
 {% endblock output %}
 
 {% block markdowncell scoped %}
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell">
+<div {{ cell_id_anchor(cell) }} class="jp-Cell jp-MarkdownCell jp-Notebook-cell">
 <div class="jp-Cell-inputWrapper">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>