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Workaround Firefox bug showing beforeunload twice

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Min RK 2016-01-27 16:25:46 +01:00
parent 03b4e32ecb
commit 23b9e0ec81
1 changed files with 13 additions and 0 deletions
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notebook/static/notebook/js/notebook.js
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@ -67,6 +67,8 @@ define(function (require) {
this.last_modified = null;
// debug 484
this._last_modified = 'init';
// Firefox workaround
this._ff_beforeunload_fired = false;
// Create default scroll manager.
this.scroll_manager = new scrollmanager.ScrollManager(this);
@ -314,6 +316,17 @@ define(function (require) {
if (kill_kernel) {
that.session.delete();
}
if ( utils.browser[0] === "Firefox") {
// Workaround ancient Firefox bug showing beforeunload twice: https://bugzilla.mozilla.org/show_bug.cgi?id=531199
if (that._ff_beforeunload_fired) {
return; // don't show twice on FF
}
that._ff_beforeunload_fired = true;
// unset flag immediately after dialog is dismissed
setTimeout(function () {
that._ff_beforeunload_fired = false;
}, 1);
}
// if we are autosaving, trigger an autosave on nav-away.
// still warn, because if we don't the autosave may fail.
if (that.dirty) {