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Fix possible crash in nested section show.

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This commit is contained in:
John Preston 2023-04-22 21:20:10 +04:00
parent 454c8db00d
commit dffe79fea8
1 changed files with 10 additions and 8 deletions

18
Telegram/SourceFiles/info/info_wrap_widget.cpp
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@ -759,9 +759,9 @@ bool WrapWidget::returnToFirstStackFrame(
void WrapWidget::showNewContent(
not_null<ContentMemento*> memento,
const Window::SectionShow &params) {
auto saveToStack = (_content != nullptr)
const auto saveToStack = (_content != nullptr)
&& (params.way == Window::SectionShow::Way::Forward);
auto needAnimation = (_content != nullptr)
const auto needAnimation = (_content != nullptr)
&& (params.animated != anim::type::instant);
auto animationParams = SectionSlideParams();
auto newController = createController(
@ -771,8 +771,12 @@ void WrapWidget::showNewContent(
newController->takeStepData(_controller.get());
}
auto newContent = object_ptr<ContentWidget>(nullptr);
if (needAnimation) {
const auto enableBackButton = hasBackButton();
const auto createInAdvance = needAnimation || enableBackButton;
if (createInAdvance) {
newContent = createContent(memento, newController.get());
}
if (needAnimation) {
animationParams.withTopBarShadow = hasTopBarShadow()
&& newContent->hasTopBarShadow();
animationParams.oldContentCache = grabForShowAnimation(
@ -783,7 +787,6 @@ void WrapWidget::showNewContent(
if (HasCustomTopBar(_controller.get())
|| HasCustomTopBar(newController.get())) {
const auto s = QSize(
newContent->width(),
animationParams.topSkip);
@ -803,11 +806,10 @@ void WrapWidget::showNewContent(
_historyStack.clear();
}
{
if (hasBackButton()) {
newContent->enableBackButton();
}
if (enableBackButton) {
newContent->enableBackButton();
}
{
// Let old controller outlive old content widget.
const auto oldController = std::exchange(