1 files changed, 24 insertions, 0 deletions
diff --git a/themes/hugo-book/assets/clipboard.js b/themes/hugo-book/assets/clipboard.js
new file mode 100644
index 0000000..2799f2f
--- /dev/null
+++ b/themes/hugo-book/assets/clipboard.js
@@ -0,0 +1,24 @@
+(function () {
+  function select(element) {
+    const selection = window.getSelection();
+
+    const range = document.createRange();
+    range.selectNodeContents(element);
+
+    selection.removeAllRanges();
+    selection.addRange(range);
+  }
+
+  document.querySelectorAll("pre code").forEach(code => {
+    code.addEventListener("click", function (event) {
+      if (window.getSelection().toString()) {
+        return;
+      }
+      select(code.parentElement);
+
+      if (navigator.clipboard) {
+        navigator.clipboard.writeText(code.parentElement.textContent);
+      }
+    });
+  });
+})();