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Desktop: destroy maintab before destructing mainwindow

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Apparently, in some Qt-versions the destructor of the base class
calls hide on child-objects (according to Qt's object hierarchy).
This is obviously called after the derived class has been destructed.

In a concrete case, the base class of the destructed MainWindow
would hide the TabDiveSite object. That would reset the filtering
if a dive site was selected, which would indirectly access the
MainWindow, which is already partially destroyed.

Therefore, destroy the MainTab before destroying the MainWindow.
Do this by keeping it as a std::unique_ptr subobject. Thus, it
will be destroyed before the MainWindow and remove itself from
Qt's object hierarchy.

Reported-by: Dirk Hohndel <dirk@hohndel.org>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-04-13 10:54:06 +02:00 committed by Dirk Hohndel
parent 17e7cc048f
commit 88ed5bf050
2 changed files with 9 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
desktop-widgets/mainwindow.cpp
View file

@ -133,7 +133,7 @@ MainWindow::MainWindow() : QMainWindow(),
// widgets will change on the mainwindow.
// for the "default" mode
mainTab = new MainTab(this);
mainTab.reset(new MainTab);
diveList = new DiveListView(this);
graphics = new ProfileWidget2(this);
MapWidget *mapWidget = MapWidget::instance();
@ -177,12 +177,12 @@ MainWindow::MainWindow() : QMainWindow(),
enabledList.push_back(enabled);
disabledList.push_back(disabled);
registerApplicationState("Default", mainTab, profileContainer, diveList, mapWidget );
registerApplicationState("EditDive", mainTab, profileContainer, diveList, mapWidget );
registerApplicationState("Default", mainTab.get(), profileContainer, diveList, mapWidget );
registerApplicationState("EditDive", mainTab.get(), profileContainer, diveList, mapWidget );
registerApplicationState("PlanDive", divePlannerWidget, profileContainer, divePlannerSettingsWidget, plannerDetails );
registerApplicationState("EditPlannedDive", divePlannerWidget, profileContainer, diveList, mapWidget );
registerApplicationState("EditDiveSite", diveSiteEdit, profileContainer, diveList, mapWidget);
registerApplicationState("FilterDive", mainTab, profileContainer, diveList, &filterWidget2);
registerApplicationState("FilterDive", mainTab.get(), profileContainer, diveList, &filterWidget2);
setStateProperties("Default", enabledList, enabledList, enabledList, enabledList);
setStateProperties("EditDive", enabledList, enabledList, enabledList, enabledList);
@ -200,7 +200,7 @@ MainWindow::MainWindow() : QMainWindow(),
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), this, SLOT(readSettings()));
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), diveList, SLOT(update()));
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), diveList, SLOT(reloadHeaderActions()));
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), mainTab, SLOT(updateDiveInfo()));
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), mainTab.get(), SLOT(updateDiveInfo()));
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), divePlannerWidget, SLOT(settingsChanged()));
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), divePlannerSettingsWidget, SLOT(settingsChanged()));
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), TankInfoModel::instance(), SLOT(update()));
@ -215,7 +215,7 @@ MainWindow::MainWindow() : QMainWindow(),
connect(DivePlannerPointsModel::instance(), SIGNAL(planCanceled()), this, SLOT(planCanceled()));
connect(DivePlannerPointsModel::instance(), SIGNAL(variationsComputed(QString)), this, SLOT(updateVariations(QString)));
connect(plannerDetails->printPlan(), SIGNAL(pressed()), divePlannerWidget, SLOT(printDecoPlan()));
connect(mainTab, &MainTab::diveSiteChanged, mapWidget, &MapWidget::centerOnSelectedDiveSite);
connect(mainTab.get(), &MainTab::diveSiteChanged, mapWidget, &MapWidget::centerOnSelectedDiveSite);
connect(this, &MainWindow::showError, ui.mainErrorMessage, &NotificationWidget::showError, Qt::AutoConnection);
connect(&windowTitleUpdate, &WindowTitleUpdate::updateTitle, this, &MainWindow::setAutomaticTitle);
@ -327,7 +327,7 @@ MainWindow::MainWindow() : QMainWindow(),
connect(graphics, &ProfileWidget2::enableShortcuts, this, &MainWindow::enableShortcuts);
connect(graphics, &ProfileWidget2::refreshDisplay, this, &MainWindow::refreshDisplay);
connect(graphics, &ProfileWidget2::editCurrentDive, this, &MainWindow::editCurrentDive);
connect(graphics, &ProfileWidget2::updateDiveInfo, mainTab, &MainTab::updateDiveInfo);
connect(graphics, &ProfileWidget2::updateDiveInfo, mainTab.get(), &MainTab::updateDiveInfo);
connect(PreferencesDialog::instance(), SIGNAL(settingsChanged()), graphics, SLOT(settingsChanged()));

3
desktop-widgets/mainwindow.h
View file

@ -13,6 +13,7 @@
#include <QUrl>
#include <QUuid>
#include <QProgressDialog>
#include <memory>
#include "ui_mainwindow.h"
#include "ui_plannerDetails.h"
@ -84,7 +85,7 @@ public:
void exitEditState();
void editDiveSite(dive_site *ds);
MainTab *mainTab;
std::unique_ptr<MainTab> mainTab;
PlannerDetails *plannerDetails;
PlannerSettingsWidget *divePlannerSettingsWidget;
ProfileWidget2 *graphics;