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Bug 1778444 - Clear UISettings on shutdown. r=kaie

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This should be the right fix.

Differential Revision: https://phabricator.services.mozilla.com/D151311
This commit is contained in:
Emilio Cobos Álvarez 2022-07-07 21:17:36 +00:00
parent aa49005e37
commit a4a6aa18d7
1 changed files with 13 additions and 7 deletions
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20
widget/windows/WindowsUIUtils.cpp
View File

@ -14,6 +14,7 @@
#include "nsIObserverService.h"
#include "nsIAppShellService.h"
#include "nsAppShellCID.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/ResultVariant.h"
#include "mozilla/Services.h"
#include "mozilla/StaticPrefs_widget.h"
@ -339,23 +340,25 @@ static IInspectable* GetUISettings() {
#ifndef __MINGW32__
// We need to keep this alive for ~ever so that change callbacks work as
// expected, sigh.
static ComPtr<IInspectable> sUiSettingsAsInspectable;
static StaticRefPtr<IInspectable> sUiSettingsAsInspectable;
if (!IsWin10OrLater()) {
// Windows.UI.ViewManagement.UISettings is Win10+ only.
return nullptr;
}
if (!sUiSettingsAsInspectable) {
ComPtr<IInspectable> uiSettingsAsInspectable;
::RoActivateInstance(
HStringReference(RuntimeClass_Windows_UI_ViewManagement_UISettings)
.Get(),
&sUiSettingsAsInspectable);
if (NS_WARN_IF(!sUiSettingsAsInspectable)) {
&uiSettingsAsInspectable);
if (NS_WARN_IF(!uiSettingsAsInspectable)) {
return nullptr;
}
ComPtr<IUISettings5> uiSettings5;
if (SUCCEEDED(sUiSettingsAsInspectable.As(&uiSettings5))) {
if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings5))) {
EventRegistrationToken unusedToken;
auto callback = Callback<ITypedEventHandler<
UISettings*, UISettingsAutoHideScrollBarsChangedEventArgs*>>(
@ -370,7 +373,7 @@ static IInspectable* GetUISettings() {
}
ComPtr<IUISettings2> uiSettings2;
if (SUCCEEDED(sUiSettingsAsInspectable.As(&uiSettings2))) {
if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings2))) {
EventRegistrationToken unusedToken;
auto callback =
Callback<ITypedEventHandler<UISettings*, IInspectable*>>([](auto...) {
@ -384,7 +387,7 @@ static IInspectable* GetUISettings() {
}
ComPtr<IUISettings3> uiSettings3;
if (SUCCEEDED(sUiSettingsAsInspectable.As(&uiSettings3))) {
if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings3))) {
EventRegistrationToken unusedToken;
auto callback =
Callback<ITypedEventHandler<UISettings*, IInspectable*>>([](auto...) {
@ -396,9 +399,12 @@ static IInspectable* GetUISettings() {
(void)NS_WARN_IF(FAILED(
uiSettings3->add_ColorValuesChanged(callback.Get(), &unusedToken)));
}
sUiSettingsAsInspectable = dont_AddRef(uiSettingsAsInspectable.Detach());
ClearOnShutdown(&sUiSettingsAsInspectable);
}
return sUiSettingsAsInspectable.Get();
return sUiSettingsAsInspectable.get();
#else
return nullptr;
#endif