[tor-commits] [tor-browser/tor-browser-78.11.0esr-10.0-1] Bug 31607: App menu items stop working on macOS

sysrqb at torproject.org sysrqb at torproject.org
Fri May 28 16:30:10 UTC 2021

commit 730398264192895c1ace82a3b26a78791a05724d
Author: Kathy Brade <brade at pearlcrescent.com>
Date:   Thu Oct 3 10:53:43 2019 -0400

    Bug 31607: App menu items stop working on macOS
    Avoid re-creating the hidden window, since this causes the nsMenuBarX
    object that is associated with the app menu to be freed (which in
    turn causes all of the app menu items to stop working).
    More detail: There should only be one hidden window.
    XREMain::XRE_mainRun() contains an explicit call to create the
    hidden window and that is the normal path by which it is created.
    However, when Tor Launcher's wizard/progress window is opened during
    startup, a hidden window is created earlier as a side effect of
    calls to nsAppShellService::GetHiddenWindow(). Then, when
    XREMain::XRE_mainRun() creates its hidden window, the original one
    is freed which also causes the app menu's nsMenuBarX object which
    is associated with that window to be destroyed. When that happens,
    the menuGroupOwner property within each Cocoa menu items's MenuItemInfo
    object is cleared. This breaks the link that is necessary for
    NativeMenuItemTarget's menuItemHit method to dispatch a menu item
 xpfe/appshell/nsAppShellService.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xpfe/appshell/nsAppShellService.cpp b/xpfe/appshell/nsAppShellService.cpp
index 719684ceb072..1600a3fea789 100644
--- a/xpfe/appshell/nsAppShellService.cpp
+++ b/xpfe/appshell/nsAppShellService.cpp
@@ -93,6 +93,10 @@ void nsAppShellService::EnsureHiddenWindow() {
 nsAppShellService::CreateHiddenWindow() {
+  if (mHiddenWindow) {
+    return NS_OK;
+  }
   if (!XRE_IsParentProcess()) {

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