Use the new KConfig WindowStateSaver

This removes some NeoChat-specific code we have for saving/restoring the
window.

src/main.cpp

@@ -304,7 +304,6 @@ int main(int argc, char *argv[])
     QWindow *window = windowFromEngine(&engine);
 
     WindowController::instance().setWindow(window);
-    WindowController::instance().restoreGeometry();
 
     return app.exec();
 }

src/qml/Main.qml

@@ -6,6 +6,7 @@ import QtQuick
 import QtQuick.Controls as QQC2
 
 import org.kde.kirigami as Kirigami
+import org.kde.config as KConfig
 
 import org.kde.neochat
 import org.kde.neochat.login
@@ -68,36 +69,8 @@ Kirigami.ApplicationWindow {
         }
     }
 
-    // This timer allows to batch update the window size change to reduce
-    // the io load and also work around the fact that x/y/width/height are
-    // changed when loading the page and overwrite the saved geometry from
-    // the previous session.
-    Timer {
-        id: saveWindowGeometryTimer
-        interval: 1000
-        onTriggered: WindowController.saveGeometry()
-    }
-
-    Connections {
-        id: saveWindowGeometryConnections
-        enabled: false // Disable on startup to avoid writing wrong values if the window is hidden
-        target: root
-
-        function onClosing() {
-            WindowController.saveGeometry();
-        }
-        function onWidthChanged() {
-            saveWindowGeometryTimer.restart();
-        }
-        function onHeightChanged() {
-            saveWindowGeometryTimer.restart();
-        }
-        function onXChanged() {
-            saveWindowGeometryTimer.restart();
-        }
-        function onYChanged() {
-            saveWindowGeometryTimer.restart();
-        }
+    KConfig.WindowStateSaver {
+        configGroupName: "Window"
     }
 
     QuickSwitcher {

src/windowcontroller.cpp

@@ -40,26 +40,6 @@ QWindow *WindowController::window() const
     return m_window;
 }
 
-void WindowController::restoreGeometry()
-{
-    const auto stateConfig = KSharedConfig::openStateConfig();
-    const KConfigGroup windowGroup = stateConfig->group(QStringLiteral("Window"));
-
-    KWindowConfig::restoreWindowSize(m_window, windowGroup);
-    KWindowConfig::restoreWindowPosition(m_window, windowGroup);
-}
-
-void WindowController::saveGeometry()
-{
-    const auto stateConfig = KSharedConfig::openStateConfig();
-    KConfigGroup windowGroup = stateConfig->group(QStringLiteral("Window"));
-
-    KWindowConfig::saveWindowPosition(m_window, windowGroup);
-    KWindowConfig::saveWindowSize(m_window, windowGroup);
-
-    stateConfig->sync();
-}
-
 void WindowController::showAndRaiseWindow(const QString &startupId)
 {
     if (m_window == nullptr) {
@@ -67,7 +47,6 @@ void WindowController::showAndRaiseWindow(const QString &startupId)
     }
     if (!m_window->isVisible()) {
         m_window->show();
-        restoreGeometry();
     }
 
 #ifdef HAVE_WINDOWSYSTEM

src/windowcontroller.h

@@ -41,16 +41,6 @@ public:
      */
     QWindow *window() const;
 
-    /**
-     * @brief Restore any saved window geometry if available.
-     */
-    void restoreGeometry();
-
-    /**
-     * @brief Save the current window geometry.
-     */
-    Q_INVOKABLE void saveGeometry();
-
     /**
      * @brief Show the window and raise to the top.
      */