MainWindow cleanups.

All MainWindow child widgets use constructors with 'parent' parameter
that allows parent widget to delete them at its destruction.
Some other MainWindow cleanup code replaced to destructor.
Application manages MainWindow instance and remove it when aboutToQuit()
signal emitted.

src/app/application.cpp

@@ -52,17 +52,15 @@
 #endif
 
 #include "application.h"
+#include "logger.h"
 #include "preferences.h"
 #include "qbtsession.h"
-#include "logger.h"
+#include "torrentpersistentdata.h"
 
 static const char PARAMS_SEPARATOR[] = "|";
 
 Application::Application(const QString &id, int &argc, char **argv)
     : BaseApplication(id, argc, argv)
-#ifndef DISABLE_GUI
-    , m_window(0)
-#endif
     , m_running(false)
 {
 #if defined(Q_OS_MACX) && !defined(DISABLE_GUI)
@@ -80,14 +78,7 @@ Application::Application(const QString &id, int &argc, char **argv)
 #endif
 
     connect(this, SIGNAL(messageReceived(const QString &)), SLOT(processMessage(const QString &)));
-}
+    connect(this, SIGNAL(aboutToQuit()), SLOT(cleanup()));
-
-Application::~Application()
-{
-    qDebug() << Q_FUNC_INFO;
-    QBtSession::drop();
-    Preferences::drop();
-    Logger::drop();
 }
 
 void Application::processMessage(const QString &message)
@@ -101,6 +92,17 @@ void Application::processMessage(const QString &message)
         m_paramsQueue.append(params);
 }
 
+void Application::cleanup()
+{
+#ifndef DISABLE_GUI
+    delete m_window;
+#endif
+    QBtSession::drop();
+    TorrentPersistentData::drop();
+    Preferences::drop();
+    Logger::drop();
+}
+
 bool Application::sendParams(const QStringList &params)
 {
     return sendMessage(params.join(QLatin1String(PARAMS_SEPARATOR)));
@@ -181,12 +183,7 @@ int Application::exec(const QStringList &params)
         m_paramsQueue.clear();
     }
 
-    int res = BaseApplication::exec();
+    return BaseApplication::exec();
-#ifndef DISABLE_GUI
-    delete m_window;
-#endif
-    qDebug("Application has exited");
-    return res;
 }
 
 #ifndef DISABLE_GUI

src/app/application.h

@@ -48,7 +48,6 @@ class Application : public BaseApplication
 
 public:
     Application(const QString &id, int &argc, char **argv);
-    ~Application();
 
  #if (defined(Q_OS_WIN) && !defined(DISABLE_GUI))
     bool isRunning();
@@ -66,11 +65,12 @@ protected:
 
 private slots:
     void processMessage(const QString &message);
+    void cleanup();
 
 private:
     bool m_running;
 #ifndef DISABLE_GUI
-    MainWindow *m_window;
+    QPointer<MainWindow> m_window;
 #endif
     QTranslator m_qtTranslator;
     QTranslator m_translator;

src/gui/hidabletabwidget.h

@@ -1,5 +1,5 @@
 /*
- * Bittorrent Client using Qt4 and libtorrent.
+ * Bittorrent Client using Qt and libtorrent.
  * Copyright (C) 2006  Christophe Dumez
  *
  * This program is free software; you can redistribute it and/or
@@ -34,31 +34,27 @@
 #include <QTabWidget>
 #include <QTabBar>
 
-class HidableTabWidget : public QTabWidget {
+class HidableTabWidget : public QTabWidget
+{
 public:
-
+    explicit HidableTabWidget(QWidget *parent = 0)
-  void showTabBar(bool show) {
+        : QTabWidget(parent)
-    tabBar()->setVisible(show);
+    {
-  }
+    }
 
 protected:
-  void tabInserted(int index) {
+    void tabInserted(int index)
-    QTabWidget::tabInserted(index);
+    {
-    if (count() == 1) {
+        QTabWidget::tabInserted(index);
-      showTabBar(false);
+        tabBar()->setVisible(count() != 1);
-    } else {
-      showTabBar(true);
     }
-  }
 
-  void tabRemoved(int index) {
+    void tabRemoved(int index)
-    QTabWidget::tabInserted(index);
+    {
-    if (count() == 1) {
+        //QTabWidget::tabInserted(index);
-      showTabBar(false);
+        QTabWidget::tabRemoved(index);
-    } else {
+        tabBar()->setVisible(count() != 1);
-      showTabBar(true);
     }
-  }
 };
 
 #endif // HIDABLETABWIDGET_H

src/gui/mainwindow.cpp

@@ -169,6 +169,7 @@ MainWindow::MainWindow(QWidget *parent)
     QAction *clearUiLockPasswdAct = lockMenu->addAction(tr("Clear the password"));
     connect(clearUiLockPasswdAct, SIGNAL(triggered()), this, SLOT(clearUILockPassword()));
     actionLock_qBittorrent->setMenu(lockMenu);
+
     // Creating Bittorrent session
     connect(QBtSession::instance(), SIGNAL(fullDiskError(QTorrentHandle, QString)), this, SLOT(fullDiskError(QTorrentHandle, QString)));
     connect(QBtSession::instance(), SIGNAL(finishedTorrent(QTorrentHandle)), this, SLOT(finishedTorrent(QTorrentHandle)));
@@ -180,19 +181,22 @@ MainWindow::MainWindow(QWidget *parent)
     connect(QBtSession::instance(), SIGNAL(recursiveTorrentDownloadPossible(QTorrentHandle)), this, SLOT(askRecursiveTorrentDownloadConfirmation(QTorrentHandle)));
 
     qDebug("create tabWidget");
-    tabs = new HidableTabWidget();
+    tabs = new HidableTabWidget(this);
     connect(tabs, SIGNAL(currentChanged(int)), this, SLOT(tab_changed(int)));
-    vSplitter = new QSplitter(Qt::Horizontal);
+
+    vSplitter = new QSplitter(Qt::Horizontal, this);
     //vSplitter->setChildrenCollapsible(false);
-    hSplitter = new QSplitter(Qt::Vertical);
+
+    hSplitter = new QSplitter(Qt::Vertical, this);
     hSplitter->setChildrenCollapsible(false);
     hSplitter->setContentsMargins(0, 4, 0, 0);
 
     // Name filter
-    search_filter = new LineEdit();
+    search_filter = new LineEdit(this);
     searchFilterAct = toolBar->insertWidget(actionLock_qBittorrent, search_filter);
     search_filter->setPlaceholderText(tr("Filter torrent list..."));
     search_filter->setFixedWidth(200);
+
     QWidget *spacer = new QWidget(this);
     spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
     toolBar->insertWidget(searchFilterAct, spacer);
@@ -275,7 +279,7 @@ MainWindow::MainWindow(QWidget *parent)
         QTimer::singleShot(0, this, SLOT(on_actionSearch_engine_triggered()));
 
     // Auto shutdown actions
-    QActionGroup * autoShutdownGroup = new QActionGroup(this);
+    QActionGroup *autoShutdownGroup = new QActionGroup(this);
     autoShutdownGroup->setExclusive(true);
     autoShutdownGroup->addAction(actionAutoShutdown_Disabled);
     autoShutdownGroup->addAction(actionAutoExit_qBittorrent);
@@ -310,13 +314,10 @@ MainWindow::MainWindow(QWidget *parent)
     properties->readSettings();
 
     // Start watching the executable for updates
-    executable_watcher = new QFileSystemWatcher();
+    executable_watcher = new QFileSystemWatcher(this);
     connect(executable_watcher, SIGNAL(fileChanged(QString)), this, SLOT(notifyOfUpdate(QString)));
     executable_watcher->addPath(qApp->applicationFilePath());
 
-    // Resume unfinished torrents
-    QBtSession::instance()->startUpTorrents();
-
     // Populate the transfer list
     transferList->getSourceModel()->populate();
     transferList->setFocus();
@@ -357,6 +358,16 @@ MainWindow::MainWindow(QWidget *parent)
     }
 }
 
+MainWindow::~MainWindow()
+{
+    // Save window size, columns size
+    writeSettings();
+#ifdef Q_OS_MAC
+    // Workaround to avoid bug http://bugreports.qt.nokia.com/browse/QTBUG-7305
+    setUnifiedTitleAndToolBarOnMac(false);
+#endif
+}
+
 void MainWindow::addToolbarContextMenu()
 {
     const Preferences* const pref = Preferences::instance();
@@ -448,68 +459,6 @@ void MainWindow::toolbarFollowSystem()
     Preferences::instance()->setToolbarTextPosition(Qt::ToolButtonFollowStyle);
 }
 
-void MainWindow::shutdownCleanUp()
-{
-    qDebug("GUI destruction");
-    hide();
-    guiUpdater->stop();
-    status_bar->stopTimer();
-    m_pwr->setActivityState(false);
-    QBtSession::drop();
-    // Save window size, columns size
-    writeSettings();
-#ifdef Q_OS_MAC
-    // Workaround to avoid bug http://bugreports.qt.nokia.com/browse/QTBUG-7305
-    setUnifiedTitleAndToolBarOnMac(false);
-#endif
-    disconnect(tabs, SIGNAL(currentChanged(int)), this, SLOT(tab_changed(int)));
-    // Delete other GUI objects
-    if (executable_watcher)
-        delete executable_watcher;
-    delete status_bar;
-    delete search_filter;
-    delete transferList;
-    delete guiUpdater;
-    if (createTorrentDlg)
-        delete createTorrentDlg;
-    if (m_executionLog)
-        delete m_executionLog;
-    if (aboutDlg)
-        delete aboutDlg;
-    if (statsDlg)
-        delete statsDlg;
-    if (options)
-        delete options;
-    if (downloadFromURLDialog)
-        delete downloadFromURLDialog;
-    if (rssWidget)
-        delete rssWidget;
-    if (searchEngine)
-        delete searchEngine;
-    delete transferListFilters;
-    delete properties;
-    delete hSplitter;
-    delete vSplitter;
-    if (systrayCreator)
-        delete systrayCreator;
-    if (systrayIcon)
-        delete systrayIcon;
-    if (myTrayIconMenu)
-        delete myTrayIconMenu;
-    delete tabs;
-    // Keyboard shortcuts
-    delete switchSearchShortcut;
-    delete switchSearchShortcut2;
-    delete switchTransferShortcut;
-    delete switchRSSShortcut;
-    delete toolbarMenu;
-    IconProvider::drop();
-    TorrentPersistentData::drop();
-    Preferences::drop();
-    Logger::drop();
-    qDebug("Finished GUI destruction");
-}
-
 void MainWindow::defineUILockPassword()
 {
     QString old_pass_md5 = Preferences::instance()->getUILockPasswordMD5();
@@ -563,8 +512,9 @@ void MainWindow::displayRSSTab(bool enable)
             tabs->setTabIcon(index_tab, IconProvider::instance()->getIcon("application-rss+xml"));
         }
     }
-    else if (rssWidget)
+    else if (rssWidget) {
         delete rssWidget;
+    }
 
 }
 
@@ -578,8 +528,9 @@ void MainWindow::displaySearchTab(bool enable)
             tabs->insertTab(1, searchEngine, IconProvider::instance()->getIcon("edit-find"), tr("Search"));
         }
     }
-    else if (searchEngine)
+    else if (searchEngine) {
         delete searchEngine;
+    }
 
 }
 
@@ -684,14 +635,16 @@ void MainWindow::createKeyboardShortcuts()
     actionOpen->setShortcut(QKeySequence(QString::fromUtf8("Ctrl+O")));
     actionDownload_from_URL->setShortcut(QKeySequence(QString::fromUtf8("Ctrl+Shift+O")));
     actionExit->setShortcut(QKeySequence(QString::fromUtf8("Ctrl+Q")));
-    switchTransferShortcut = new QShortcut(QKeySequence("Alt+1"), this);
+
+    QShortcut *switchTransferShortcut = new QShortcut(QKeySequence("Alt+1"), this);
     connect(switchTransferShortcut, SIGNAL(activated()), this, SLOT(displayTransferTab()));
-    switchSearchShortcut = new QShortcut(QKeySequence("Alt+2"), this);
+    QShortcut *switchSearchShortcut = new QShortcut(QKeySequence("Alt+2"), this);
     connect(switchSearchShortcut, SIGNAL(activated()), this, SLOT(displaySearchTab()));
-    switchSearchShortcut2 = new QShortcut(QKeySequence("Ctrl+F"), this);
+    QShortcut *switchSearchShortcut2 = new QShortcut(QKeySequence("Ctrl+F"), this);
     connect(switchSearchShortcut2, SIGNAL(activated()), this, SLOT(displaySearchTab()));
-    switchRSSShortcut = new QShortcut(QKeySequence("Alt+3"), this);
+    QShortcut *switchRSSShortcut = new QShortcut(QKeySequence("Alt+3"), this);
     connect(switchRSSShortcut, SIGNAL(activated()), this, SLOT(displayRSSTab()));
+
     actionDocumentation->setShortcut(QKeySequence("F1"));
     actionOptions->setShortcut(QKeySequence(QString::fromUtf8("Alt+O")));
     actionStart->setShortcut(QKeySequence(QString::fromUtf8("Ctrl+S")));
@@ -1147,7 +1100,7 @@ void MainWindow::loadPreferences(bool configure_session)
     const Preferences* const pref = Preferences::instance();
     const bool newSystrayIntegration = pref->systrayIntegration();
     actionLock_qBittorrent->setVisible(newSystrayIntegration);
-    if (newSystrayIntegration != (systrayIcon!=0)) {
+    if (newSystrayIntegration != (systrayIcon != 0)) {
         if (newSystrayIntegration) {
             // create the trayicon
             if (!QSystemTrayIcon::isSystemTrayAvailable()) {
@@ -1572,8 +1525,9 @@ void MainWindow::on_actionExecution_Logs_triggered(bool checked)
         int index_tab = tabs->addTab(m_executionLog, tr("Execution Log"));
         tabs->setTabIcon(index_tab, IconProvider::instance()->getIcon("view-calendar-journal"));
     }
-    else if (m_executionLog)
+    else if (m_executionLog) {
         delete m_executionLog;
+    }
     Preferences::instance()->setExecutionLogEnabled(checked);
 }
 

src/gui/mainwindow.h

@@ -48,11 +48,9 @@ class TransferListWidget;
 class TransferListFiltersWidget;
 class PropertiesWidget;
 class StatusBar;
-class consoleDlg;
 class about;
 class TorrentCreatorDlg;
 class downloadFromURL;
-class HidableTabWidget;
 class LineEdit;
 class ExecutionLog;
 class PowerManagement;
@@ -73,6 +71,7 @@ class MainWindow: public QMainWindow, private Ui::MainWindow
 public:
     // Construct / Destruct
     explicit MainWindow(QWidget *parent = 0);
+    ~MainWindow();
     // Methods
     QWidget* getCurrentTabWidget() const;
     TransferListWidget* getTransferList() const { return transferList; }
@@ -86,13 +85,10 @@ public slots:
     void downloadFromURLList(const QStringList& urls);
     void updateAltSpeedsBtn(bool alternative);
     void updateNbTorrents();
-    void shutdownCleanUp();
     void activate();
 
 protected slots:
     // GUI related slots
-    void dropEvent(QDropEvent *event);
-    void dragEnterEvent(QDragEnterEvent *event);
     void toggleVisibility(QSystemTrayIcon::ActivationReason e = QSystemTrayIcon::Trigger);
     void on_actionAbout_triggered();
     void on_actionStatistics_triggered();
@@ -144,6 +140,8 @@ protected slots:
 #endif
 
 protected:
+    void dropEvent(QDropEvent *event);
+    void dragEnterEvent(QDragEnterEvent *event);
     void closeEvent(QCloseEvent *);
     void showEvent(QShowEvent *);
     bool event(QEvent * event);
@@ -169,10 +167,9 @@ private:
     // GUI related
     bool m_posInitialized;
     QTimer *guiUpdater;
-    HidableTabWidget *tabs;
+    QTabWidget *tabs;
     StatusBar *status_bar;
     QPointer<options_imp> options;
-    QPointer<consoleDlg> console;
     QPointer<about> aboutDlg;
     QPointer<StatsDialog> statsDlg;
     QPointer<TorrentCreatorDlg> createTorrentDlg;
@@ -189,11 +186,6 @@ private:
     bool unlockDlgShowing;
     LineEdit *search_filter;
     QAction *searchFilterAct;
-    // Keyboard shortcuts
-    QShortcut *switchSearchShortcut;
-    QShortcut *switchSearchShortcut2;
-    QShortcut *switchTransferShortcut;
-    QShortcut *switchRSSShortcut;
     // Widgets
     QAction *prioSeparator;
     QAction *prioSeparatorMenu;