From a66df4950cc772b77967fc12437ea0f5b4240fa4 Mon Sep 17 00:00:00 2001
From: Rainer Simon <rainer.simon@ait.ac.at>
Date: Thu, 14 May 2020 10:22:46 +0200
Subject: [PATCH] Closes #8

---
 src/selection/SelectionHandler.js | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/src/selection/SelectionHandler.js b/src/selection/SelectionHandler.js
index b3f29d7..96c2d15 100644
--- a/src/selection/SelectionHandler.js
+++ b/src/selection/SelectionHandler.js
@@ -49,17 +49,23 @@ export default class SelectionHandler extends EventEmitter {
         }
       } else {
         const selectedRange = trimRange(selection.getRangeAt(0));
-        const stub = rangeToSelection(selectedRange, this.el);
 
-        const spans = this.highlighter.wrapRange(selectedRange);
-        spans.forEach(span => span.className = 'r6o-selection');
+        // Make sure the selection is entirely inside this.el
+        const { commonAncestorContainer } = selectedRange;
 
-        this._clearNativeSelection();
+        if (this.el.contains(commonAncestorContainer)) {
+          const stub = rangeToSelection(selectedRange, this.el);
 
-        this.emit('select', {
-          selection: stub,
-          element: selectedRange
-        });
+          const spans = this.highlighter.wrapRange(selectedRange);
+          spans.forEach(span => span.className = 'r6o-selection');
+
+          this._clearNativeSelection();
+
+          this.emit('select', {
+            selection: stub,
+            element: selectedRange
+          });
+        }
       }
     }
   }