diff options
Diffstat (limited to 'src/widgets/widgets/qmdiarea.cpp')
-rw-r--r-- | src/widgets/widgets/qmdiarea.cpp | 74 |
1 files changed, 59 insertions, 15 deletions
diff --git a/src/widgets/widgets/qmdiarea.cpp b/src/widgets/widgets/qmdiarea.cpp index 3b4505688b..79b83453ac 100644 --- a/src/widgets/widgets/qmdiarea.cpp +++ b/src/widgets/widgets/qmdiarea.cpp @@ -671,7 +671,11 @@ void QMdiAreaPrivate::_q_deactivateAllWindows(QMdiSubWindow *aboutToActivate) aboutToBecomeActive = aboutToActivate; Q_ASSERT(aboutToBecomeActive); - foreach (QMdiSubWindow *child, childWindows) { + // Take a copy because child->showNormal() could indirectly call + // QCoreApplication::sendEvent(), which could call unknown code that e.g. + // recurses into the class modifying childWindows. + const auto subWindows = childWindows; + for (QMdiSubWindow *child : subWindows) { if (!sanityCheck(child, "QMdiArea::deactivateAllWindows") || aboutToBecomeActive == child) continue; // We don't want to handle signals caused by child->showNormal(). @@ -846,7 +850,7 @@ void QMdiAreaPrivate::place(Placer *placer, QMdiSubWindow *child) QList<QRect> rects; rects.reserve(childWindows.size()); QRect parentRect = q->rect(); - foreach (QMdiSubWindow *window, childWindows) { + for (QMdiSubWindow *window : std::as_const(childWindows)) { if (!sanityCheck(window, "QMdiArea::place") || window == child || !window->isVisibleTo(q) || !window->testAttribute(Qt::WA_Moved)) { continue; @@ -888,7 +892,7 @@ void QMdiAreaPrivate::rearrange(Rearranger *rearranger) const bool reverseList = rearranger->type() == Rearranger::RegularTiler; const QList<QMdiSubWindow *> subWindows = subWindowList(activationOrder, reverseList); QSize minSubWindowSize; - foreach (QMdiSubWindow *child, subWindows) { + for (QMdiSubWindow *child : subWindows) { if (!sanityCheck(child, "QMdiArea::rearrange") || !child->isVisible()) continue; if (rearranger->type() == Rearranger::IconTiler) { @@ -1302,7 +1306,7 @@ bool QMdiAreaPrivate::lastWindowAboutToBeDestroyed() const */ void QMdiAreaPrivate::setChildActivationEnabled(bool enable, bool onlyNextActivationEvent) const { - foreach (QMdiSubWindow *subWindow, childWindows) { + for (QMdiSubWindow *subWindow : childWindows) { if (!subWindow || !subWindow->isVisible()) continue; if (onlyNextActivationEvent) @@ -1324,7 +1328,11 @@ void QMdiAreaPrivate::scrollBarPolicyChanged(Qt::Orientation orientation, Qt::Sc const QMdiSubWindow::SubWindowOption option = orientation == Qt::Horizontal ? QMdiSubWindow::AllowOutsideAreaHorizontally : QMdiSubWindow::AllowOutsideAreaVertically; const bool enable = policy != Qt::ScrollBarAlwaysOff; - foreach (QMdiSubWindow *child, childWindows) { + // Take a copy because child->setOption() may indirectly call QCoreApplication::sendEvent(), + // the latter could call unknown code that could e.g. recurse into the class + // modifying childWindows. + const auto subWindows = childWindows; + for (QMdiSubWindow *child : subWindows) { if (!sanityCheck(child, "QMdiArea::scrollBarPolicyChanged")) continue; child->setOption(option, enable); @@ -1340,7 +1348,7 @@ QMdiAreaPrivate::subWindowList(QMdiArea::WindowOrder order, bool reversed) const return list; if (order == QMdiArea::CreationOrder) { - foreach (QMdiSubWindow *child, childWindows) { + for (QMdiSubWindow *child : childWindows) { if (!child) continue; if (!reversed) @@ -1526,7 +1534,12 @@ void QMdiAreaPrivate::setViewMode(QMdiArea::ViewMode mode) isSubWindowsTiled = false; - foreach (QMdiSubWindow *subWindow, childWindows) + // Take a copy as tabBar->addTab() will (indirectly) create a connection between + // the tab close button clicked() signal and the _q_closeTab() slot, which may + // indirectly call QCoreApplication::sendEvent(), the latter could result in + // invoking unknown code that could e.g. recurse into the class modifying childWindows. + const auto subWindows = childWindows; + for (QMdiSubWindow *subWindow : subWindows) tabBar->addTab(subWindow->windowIcon(), tabTextFor(subWindow)); QMdiSubWindow *current = q->currentSubWindow(); @@ -1848,7 +1861,11 @@ void QMdiArea::closeAllSubWindows() return; d->isSubWindowsTiled = false; - foreach (QMdiSubWindow *child, d->childWindows) { + // Take a copy because the child->close() call below may end up indirectly calling + // QCoreApplication::send{Spontaneous}Event(), which may call unknown code that + // could e.g. recurse into the class modifying d->childWindows. + const auto subWindows = d->childWindows; + for (QMdiSubWindow *child : subWindows) { if (!sanityCheck(child, "QMdiArea::closeAllSubWindows")) continue; child->close(); @@ -1987,7 +2004,11 @@ void QMdiArea::removeSubWindow(QWidget *widget) } bool found = false; - foreach (QMdiSubWindow *child, d->childWindows) { + // Take a copy because child->setWidget(nullptr) will indirectly + // QCoreApplication::sendEvent(); the latter could call unknown code that could + // e.g. recurse into the class modifying d->childWindows. + const auto subWindows = d->childWindows; + for (QMdiSubWindow *child : subWindows) { if (!sanityCheck(child, "QMdiArea::removeSubWindow")) continue; if (child->widget() == widget) { @@ -2268,7 +2289,11 @@ void QMdiArea::resizeEvent(QResizeEvent *resizeEvent) // Resize maximized views. bool hasMaximizedSubWindow = false; - foreach (QMdiSubWindow *child, d->childWindows) { + // Take a copy because child->resize() may call QCoreApplication::sendEvent() + // which may invoke unknown code, that could e.g. recurse into the class + // modifying d->childWindows. + const auto subWindows = d->childWindows; + for (QMdiSubWindow *child : subWindows) { if (sanityCheck(child, "QMdiArea::resizeEvent") && child->isMaximized() && child->size() != resizeEvent->size()) { auto realSize = resizeEvent->size(); @@ -2327,7 +2352,9 @@ void QMdiArea::showEvent(QShowEvent *showEvent) Q_D(QMdiArea); if (!d->pendingRearrangements.isEmpty()) { bool skipPlacement = false; - foreach (Rearranger *rearranger, d->pendingRearrangements) { + // Take a copy because d->rearrange() may modify d->pendingRearrangements + const auto pendingRearrange = d->pendingRearrangements; + for (Rearranger *rearranger : pendingRearrange) { // If this is the case, we don't have to lay out pending child windows // since the rearranger will find a placement for them. if (rearranger->type() != Rearranger::IconTiler && !skipPlacement) @@ -2341,9 +2368,19 @@ void QMdiArea::showEvent(QShowEvent *showEvent) } if (!d->pendingPlacements.isEmpty()) { - foreach (QMdiSubWindow *window, d->pendingPlacements) { + // Nothing obvious in the loop body changes the container (in this code path) + // during iteration, this is calling into a non-const method that does change + // the container when called from other places. So take a copy anyway for good + // measure. + const auto copy = d->pendingPlacements; + for (QMdiSubWindow *window : copy) { if (!window) continue; + if (d->viewMode == TabbedView && window->d_func()->isActive && !d->active) { + d->showActiveWindowMaximized = true; + d->emitWindowActivated(window); // Also maximizes the window + continue; + } if (!window->testAttribute(Qt::WA_Resized)) { QSize newSize(window->sizeHint().boundedTo(viewport()->size())); window->resize(newSize.expandedTo(qSmartMinSize(window))); @@ -2477,12 +2514,16 @@ bool QMdiArea::event(QEvent *event) d->isSubWindowsTiled = true; } break; - case QEvent::WindowIconChange: - foreach (QMdiSubWindow *window, d->childWindows) { + case QEvent::WindowIconChange: { + // Take a copy because QCoreApplication::sendEvent() may call unknown code, + // that may cause recursing into the class + const auto subWindows = d->childWindows; + for (QMdiSubWindow *window : subWindows) { if (sanityCheck(window, "QMdiArea::WindowIconChange")) QCoreApplication::sendEvent(window, event); } break; + } case QEvent::Hide: d->setActive(d->active, false, false); d->setChildActivationEnabled(false); @@ -2637,7 +2678,10 @@ void QMdiArea::setupViewport(QWidget *viewport) Q_D(QMdiArea); if (viewport) viewport->setAttribute(Qt::WA_OpaquePaintEvent, d->background.isOpaque()); - foreach (QMdiSubWindow *child, d->childWindows) { + // Take a copy because the child->setParent() call below may call QCoreApplication::sendEvent() + // which may call unknown code that could e.g. recurse into the class modifying d->childWindows. + const auto subWindows = d->childWindows; + for (QMdiSubWindow *child : subWindows) { if (!sanityCheck(child, "QMdiArea::setupViewport")) continue; child->setParent(viewport, child->windowFlags()); |