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-rw-r--r--ext/bg/js/page-exit-prevention.js60
-rw-r--r--ext/bg/js/settings.js46
-rw-r--r--ext/bg/settings.html1
3 files changed, 61 insertions, 46 deletions
diff --git a/ext/bg/js/page-exit-prevention.js b/ext/bg/js/page-exit-prevention.js
new file mode 100644
index 00000000..aee4e3c2
--- /dev/null
+++ b/ext/bg/js/page-exit-prevention.js
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+class PageExitPrevention {
+ constructor() {
+ }
+
+ start() {
+ PageExitPrevention._addInstance(this);
+ }
+
+ end() {
+ PageExitPrevention._removeInstance(this);
+ }
+
+ static _addInstance(instance) {
+ const size = PageExitPrevention._instances.size;
+ PageExitPrevention._instances.set(instance, true);
+ if (size === 0) {
+ window.addEventListener('beforeunload', PageExitPrevention._onBeforeUnload);
+ }
+ }
+
+ static _removeInstance(instance) {
+ if (
+ PageExitPrevention._instances.delete(instance) &&
+ PageExitPrevention._instances.size === 0
+ ) {
+ window.removeEventListener('beforeunload', PageExitPrevention._onBeforeUnload);
+ }
+ }
+
+ static _onBeforeUnload(e) {
+ if (PageExitPrevention._instances.size === 0) {
+ return;
+ }
+
+ e.preventDefault();
+ e.returnValue = '';
+ return '';
+ }
+}
+
+PageExitPrevention._instances = new Map();
diff --git a/ext/bg/js/settings.js b/ext/bg/js/settings.js
index abe6f389..9e9604e2 100644
--- a/ext/bg/js/settings.js
+++ b/ext/bg/js/settings.js
@@ -223,52 +223,6 @@ $(document).ready(() => onReady());
/*
- * Page exit prevention
- */
-
-class PageExitPrevention {
- constructor() {
- }
-
- start() {
- PageExitPrevention._addInstance(this);
- }
-
- end() {
- PageExitPrevention._removeInstance(this);
- }
-
- static _addInstance(instance) {
- const size = PageExitPrevention._instances.size;
- PageExitPrevention._instances.set(instance, true);
- if (size === 0) {
- window.addEventListener('beforeunload', PageExitPrevention._onBeforeUnload);
- }
- }
-
- static _removeInstance(instance) {
- if (
- PageExitPrevention._instances.delete(instance) &&
- PageExitPrevention._instances.size === 0
- ) {
- window.removeEventListener('beforeunload', PageExitPrevention._onBeforeUnload);
- }
- }
-
- static _onBeforeUnload(e) {
- if (PageExitPrevention._instances.size === 0) {
- return;
- }
-
- e.preventDefault();
- e.returnValue = '';
- return '';
- }
-}
-PageExitPrevention._instances = new Map();
-
-
-/*
* Appearance
*/
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index 908c618c..9edb48e5 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -876,6 +876,7 @@
<script src="/bg/js/dictionary.js"></script>
<script src="/bg/js/handlebars.js"></script>
<script src="/bg/js/options.js"></script>
+ <script src="/bg/js/page-exit-prevention.js"></script>
<script src="/bg/js/profile-conditions.js"></script>
<script src="/bg/js/templates.js"></script>
<script src="/bg/js/util.js"></script>