qtui: Fix quit sequence and lifetime issues

[quassel.git] / src / qtui / qtui.cpp

diff --git a/src/qtui/qtui.cpp b/src/qtui/qtui.cpp
index 0082bd0..a6c48c3 100644 (file)
--- a/src/qtui/qtui.cpp
+++ b/src/qtui/qtui.cpp
@@ -30,6 +30,7 @@
 #include "buffermodel.h"
 #include "chatlinemodel.h"
 #include "contextmenuactionprovider.h"
+#include "icon.h"
 #include "mainwin.h"
 #include "qtuimessageprocessor.h"
 #include "qtuisettings.h"
@@ -39,59 +40,54 @@
 #include "types.h"
 #include "util.h"
 
-QtUi *QtUi::_instance = nullptr;
-MainWin *QtUi::_mainWin = nullptr;
 QList<AbstractNotificationBackend *> QtUi::_notificationBackends;
 QList<AbstractNotificationBackend::Notification> QtUi::_notifications;
 
+
+QtUi *QtUi::instance()
+{
+    return static_cast<QtUi*>(GraphicalUi::instance());
+}
+
+
 QtUi::QtUi()
     : GraphicalUi()
     , _systemIconTheme{QIcon::themeName()}
 {
-    if (_instance != nullptr) {
-        qWarning() << "QtUi has been instantiated again!";
-        return;
-    }
-    _instance = this;
+    QtUiSettings uiSettings;
+    Quassel::loadTranslation(uiSettings.value("Locale", QLocale::system()).value<QLocale>());
 
     if (Quassel::isOptionSet("icontheme")) {
         _systemIconTheme = Quassel::optionValue("icontheme");
         QIcon::setThemeName(_systemIconTheme);
     }
-
-    QtUiSettings uiSettings;
-    Quassel::loadTranslation(uiSettings.value("Locale", QLocale::system()).value<QLocale>());
-
     setupIconTheme();
-
-    QApplication::setWindowIcon(QIcon::fromTheme("quassel"));
-
-    setContextMenuActionProvider(new ContextMenuActionProvider(this));
-    setToolBarActionProvider(new ToolBarActionProvider(this));
+    QApplication::setWindowIcon(icon::get("quassel"));
 
     setUiStyle(new QtUiStyle(this));
-    _mainWin = new MainWin();
-
-    setMainWidget(_mainWin);
-
-    connect(_mainWin, SIGNAL(connectToCore(const QVariantMap &)), this, SIGNAL(connectToCore(const QVariantMap &)));
-    connect(_mainWin, SIGNAL(disconnectFromCore()), this, SIGNAL(disconnectFromCore()));
-    connect(Client::instance(), SIGNAL(bufferMarkedAsRead(BufferId)), SLOT(closeNotifications(BufferId)));
 }
 
 
 QtUi::~QtUi()
 {
     unregisterAllNotificationBackends();
-    delete _mainWin;
-    _mainWin = nullptr;
-    _instance = nullptr;
 }
 
 
 void QtUi::init()
 {
+    setContextMenuActionProvider(new ContextMenuActionProvider(this));
+    setToolBarActionProvider(new ToolBarActionProvider(this));
+
+    _mainWin.reset(new MainWin());  // TODO C++14: std::make_unique
+    setMainWidget(_mainWin.get());
+
+    connect(_mainWin.get(), SIGNAL(connectToCore(const QVariantMap &)), this, SIGNAL(connectToCore(const QVariantMap &)));
+    connect(_mainWin.get(), SIGNAL(disconnectFromCore()), this, SIGNAL(disconnectFromCore()));
+    connect(Client::instance(), SIGNAL(bufferMarkedAsRead(BufferId)), SLOT(closeNotifications(BufferId)));
+
     _mainWin->init();
+
     QtUiSettings uiSettings;
     uiSettings.initAndNotify("UseSystemTrayIcon", this, SLOT(useSystemTrayChanged(QVariant)), true);
 
@@ -273,7 +269,9 @@ std::vector<std::pair<QString, QString>> QtUi::availableIconThemes() const
     static const std::vector<std::pair<QString, QString>> supported {
         { "breeze", tr("Breeze") },
         { "breeze-dark", tr("Breeze Dark") },
+#ifdef WITH_OXYGEN_ICONS
         { "oxygen", tr("Oxygen") }
+#endif
     };
 
     std::vector<std::pair<QString, QString>> result;
@@ -290,6 +288,12 @@ std::vector<std::pair<QString, QString>> QtUi::availableIconThemes() const
 }
 
 
+QString QtUi::systemIconTheme() const
+{
+    return _systemIconTheme;
+}
+
+
 void QtUi::setupIconTheme()
 {
     // Add paths to our own icon sets to the theme search paths
@@ -336,9 +340,10 @@ void QtUi::refreshIconTheme()
         }
     }
 
-    if (_systemIconTheme.isEmpty() || _systemIconTheme == fallbackTheme || s.value("Icons/OverrideSystemTheme", false).toBool()) {
+    if (_systemIconTheme.isEmpty() || _systemIconTheme == fallbackTheme || s.value("Icons/OverrideSystemTheme", true).toBool()) {
         // We have a valid fallback theme and want to override the system theme (if it's even defined), so we're basically done
         QIcon::setThemeName(fallbackTheme);
+        emit iconThemeRefreshed();
         return;
     }
 
@@ -355,6 +360,7 @@ void QtUi::refreshIconTheme()
         if (!_dummyThemeDir->isValid() || !QDir{_dummyThemeDir->path()}.mkpath("icons/quassel-icon-proxy/apps/32")) {
             qWarning() << "Could not create temporary directory for proxying the system icon theme, using fallback";
             QIcon::setThemeName(fallbackTheme);
+            emit iconThemeRefreshed();
             return;
         }
         // Add this to XDG_DATA_DIRS, otherwise KIconLoader complains
@@ -371,6 +377,7 @@ void QtUi::refreshIconTheme()
     if (!indexFile.open(QFile::WriteOnly|QFile::Truncate)) {
         qWarning() << "Could not create index file for proxying the system icon theme, using fallback";
         QIcon::setThemeName(fallbackTheme);
+        emit iconThemeRefreshed();
         return;
     }
 
@@ -385,6 +392,7 @@ void QtUi::refreshIconTheme()
     if (indexFile.write(indexContents.toLatin1()) < 0) {
         qWarning() << "Could not write index file for proxying the system icon theme, using fallback";
         QIcon::setThemeName(fallbackTheme);
+        emit iconThemeRefreshed();
         return;
     }
     indexFile.close();
@@ -393,5 +401,6 @@ void QtUi::refreshIconTheme()
     // Qt4 doesn't support QTemporaryDir. Since it's deprecated and slated to be removed soon anyway, we don't bother
     // writing a replacement and simply don't support not overriding the system theme.
     QIcon::setThemeName(fallbackTheme);
+    emit iconThemeRefreshed();
 #endif
 }