Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 58 insertions, 0 deletions

diff --git a/browser/extensions/screenshots/clipboard.js b/browser/extensions/screenshots/clipboard.js
new file mode 100644
index 0000000000..313a3e6372
--- /dev/null
+++ b/browser/extensions/screenshots/clipboard.js
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* globals catcher, assertIsBlankDocument */
+
+"use strict";
+
+this.clipboard = (function() {
+  const exports = {};
+
+  exports.copy = function(text) {
+    return new Promise((resolve, reject) => {
+      const element = document.createElement("iframe");
+      element.src = browser.extension.getURL("blank.html");
+      // We can't actually hide the iframe while copying, but we can make
+      // it close to invisible:
+      element.style.opacity = "0";
+      element.style.width = "1px";
+      element.style.height = "1px";
+      element.style.display = "block";
+      element.addEventListener("load", catcher.watchFunction(() => {
+        try {
+          const doc = element.contentDocument;
+          assertIsBlankDocument(doc);
+          const el = doc.createElement("textarea");
+          doc.body.appendChild(el);
+          el.value = text;
+          if (!text) {
+            const exc = new Error("Clipboard copy given empty text");
+            exc.noPopup = true;
+            catcher.unhandled(exc);
+          }
+          el.select();
+          if (doc.activeElement !== el) {
+            const unhandledTag = doc.activeElement ? doc.activeElement.tagName : "No active element";
+            const exc = new Error("Clipboard el.select failed");
+            exc.activeElement = unhandledTag;
+            exc.noPopup = true;
+            catcher.unhandled(exc);
+          }
+          const copied = doc.execCommand("copy");
+          if (!copied) {
+            catcher.unhandled(new Error("Clipboard copy failed"));
+          }
+          el.remove();
+          resolve(copied);
+        } finally {
+          element.remove();
+        }
+      }), {once: true});
+      document.body.appendChild(element);
+    });
+  };
+
+  return exports;
+})();
+null;