Show warning when closing unsaved. (#16)

src/gui/dialogs/formsettings.cpp

@@ -45,6 +45,7 @@ FormSettings::FormSettings(QWidget *parent) : QDialog(parent), m_panels(QList<Se
 
   // Establish needed connections.
   connect(m_ui->m_buttonBox, &QDialogButtonBox::accepted, this, &FormSettings::saveSettings);
+  connect(m_ui->m_buttonBox, &QDialogButtonBox::rejected, this, &FormSettings::cancelSettings);
   connect(m_btnApply, &QPushButton::clicked, this, &FormSettings::applySettings);
 
   addSettingsPanel(new SettingsGeneral(m_settings, this));
@@ -104,7 +105,7 @@ void FormSettings::applySettings() {
     MessageBox::show(this,
                      QMessageBox::Question,
                      tr("Critical settings were changed"),
-                     tr("Some critical settings were changed and will be applied after the application gets restarted. "
+                     tr("Some critical settings were changed and will be applied after the application gets restarted."
                         "\n\nYou have to restart manually."),
                      QString(),
                      tr("Changed categories of settings:\n%1.").arg(changed_settings_description .join(QSL(",\n"))),
@@ -114,6 +115,35 @@ void FormSettings::applySettings() {
   m_btnApply->setEnabled(false);
 }
 
+void FormSettings::cancelSettings() {
+  QStringList changed_panels;
+
+  foreach (SettingsPanel *panel, m_panels) {
+    if (panel->isDirty()) {
+      changed_panels.append(panel->title().toLower());
+    }
+  }
+
+  if (changed_panels.isEmpty()) {
+    reject();
+  }
+  else {
+    const QStringList changed_settings_description = changed_panels.replaceInStrings(QRegExp(QSL("^")), QString::fromUtf8(" • "));
+
+    if (MessageBox::show(this,
+                     QMessageBox::Critical,
+                     tr("Some settings are changed and will be lost"),
+                     tr("Some settings were changed and by cancelling this dialog, you would lose these changes."
+                        "\n\nYou have to restart manually."),
+                     tr("Do you really want to close this dialog without saving settings?"),
+                     tr("Changed categories of settings:\n%1.").arg(changed_settings_description .join(QSL(",\n"))),
+                     QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes) ==
+        QMessageBox::Yes) {
+      reject();
+    }
+  }
+}
+
 void FormSettings::addSettingsPanel(SettingsPanel *panel) {
   m_ui->m_listSettings->addItem(panel->title());
   m_panels.append(panel);

src/gui/dialogs/formsettings.h

@@ -41,6 +41,7 @@ class FormSettings : public QDialog {
     // Saves settings into global configuration.
     void saveSettings();
     void applySettings();
+    void cancelSettings();
     
   private:
     void addSettingsPanel(SettingsPanel *panel);

src/gui/dialogs/formsettings.ui

@@ -69,22 +69,6 @@
  </tabstops>
  <resources/>
  <connections>
-  <connection>
-   <sender>m_buttonBox</sender>
-   <signal>rejected()</signal>
-   <receiver>FormSettings</receiver>
-   <slot>reject()</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>334</x>
-     <y>400</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>286</x>
-     <y>274</y>
-    </hint>
-   </hints>
-  </connection>
   <connection>
    <sender>m_listSettings</sender>
    <signal>currentRowChanged(int)</signal>

src/gui/settings/settingsdatabase.cpp

@@ -42,6 +42,8 @@ SettingsDatabase::SettingsDatabase(Settings *settings, QWidget *parent)
   connect(m_ui->m_txtMysqlPassword->lineEdit(), &BaseLineEdit::textChanged, this, &SettingsDatabase::onMysqlPasswordChanged);
   connect(m_ui->m_txtMysqlDatabase->lineEdit(), &BaseLineEdit::textChanged, this, &SettingsDatabase::onMysqlDatabaseChanged);
   connect(m_ui->m_btnMysqlTestSetup, &QPushButton::clicked, this, &SettingsDatabase::mysqlTestConnection);
+
+  connect(m_ui->m_checkSqliteUseInMemoryDatabase, &QCheckBox::toggled, this, &SettingsDatabase::requireRestart);
   connect(m_ui->m_spinMysqlPort, &QSpinBox::editingFinished, this, &SettingsDatabase::requireRestart);
   connect(m_ui->m_txtMysqlHostname->lineEdit(), &BaseLineEdit::textEdited, this, &SettingsDatabase::requireRestart);
   connect(m_ui->m_txtMysqlPassword->lineEdit(), &BaseLineEdit::textEdited, this, &SettingsDatabase::requireRestart);