From ed34d6dcc47cce2440e5a1b6e8c151ff18af2b68 Mon Sep 17 00:00:00 2001
From: Zerline <odile.benassy@u-psud.fr>
Date: Mon, 17 Feb 2020 10:18:28 +0100
Subject: [PATCH] 'description_html' can be modified.

---
 packages/controls/src/widget_description.ts | 5 +++++
 tests/test_sanitizer.ipynb                  | 9 +++++----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/packages/controls/src/widget_description.ts b/packages/controls/src/widget_description.ts
index 80ba961d157..7b468012ebb 100644
--- a/packages/controls/src/widget_description.ts
+++ b/packages/controls/src/widget_description.ts
@@ -54,6 +54,11 @@ export class DescriptionView extends DOMWidgetView {
     this.label.style.display = 'none';
 
     this.listenTo(this.model, 'change:description', this.updateDescription);
+    this.listenTo(
+      this.model,
+      'change:description_html',
+      this.updateDescription
+    );
     this.listenTo(this.model, 'change:tabbable', this.updateTabindex);
     this.updateDescription();
     this.updateTabindex();
diff --git a/tests/test_sanitizer.ipynb b/tests/test_sanitizer.ipynb
index 06a035e8406..fac435fde82 100644
--- a/tests/test_sanitizer.ipynb
+++ b/tests/test_sanitizer.ipynb
@@ -61,7 +61,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "Checkbox(description=\"<b>ok</b><i>OK</i>\", description_html=False)"
+    "c = Checkbox(description=\"<b>ok</b><i>OK</i>\")\n",
+    "c"
    ]
   },
   {
@@ -70,7 +71,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "Checkbox(description=\"<b>ok</b><script>OK</script>\", description_html = True)"
+    "c.description_html = True"
    ]
   },
   {
@@ -79,7 +80,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "Label(\"<script>ok</script>\")"
+    "Checkbox(description=\"<b>ok</b><script>OK</script>\", description_html = True)"
    ]
   },
   {
@@ -88,7 +89,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "Label.__mro__, Text.__mro__"
+    "Label(\"<b>OK</b><script>ok</script>\", description_html=True)"
    ]
   }
  ],