/* 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, browser */
"use strict";
this.clipboard = (
function () {
const exports = {};
exports.copy =
function (text) {
return new Promise(resolve => {
const element = document.createElement(
"iframe");
element.src = browser.runtime.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;