Allowing reset RAID config file path to default.

src/config/advancedpagewidget.cpp

@@ -69,11 +69,12 @@ void AdvancedPageWidget::setupDialog()
 
 QString AdvancedPageWidget::raidConfigurationFile() const
 {
-    return raidConfigFilePath->text();
+    return raidConfigFilePath->text().trimmed();
 }
 
 void AdvancedPageWidget::setRaidConfigurationFile(const QString &file)
 {
+    raidConfigFilePath->clear();
     raidConfigFilePath->insert(file);
 }
 

src/config/advancedpagewidget.h

@@ -42,6 +42,9 @@ public:
     const QComboBox& comboBackend() const {
         return *m_ComboBackend;
     }
+    const QLineEdit& raidConfigurationLine() const {
+        return *raidConfigFilePath;
+    }
 
     QString backend() const;
     void setBackend(const QString& name);

src/config/configureoptionsdialog.cpp

@@ -67,6 +67,7 @@ ConfigureOptionsDialog::ConfigureOptionsDialog(QWidget* parent, const OperationS
     item->setIcon(QIcon::fromTheme(QStringLiteral("configure")).pixmap(IconSize(KIconLoader::Desktop)));
 
     connect(&advancedPageWidget().comboBackend(), qOverload<int>(&QComboBox::activated), this, &ConfigureOptionsDialog::onComboDefaultFileSystemActivated);
+    connect(&advancedPageWidget().raidConfigurationLine(), &QLineEdit::textChanged, this, &ConfigureOptionsDialog::onRaidConfigFilePathActivated);
 
     KConfigGroup kcg(KSharedConfig::openConfig(), "configureOptionsDialogs");
     restoreGeometry(kcg.readEntry<QByteArray>("Geometry", QByteArray()));

src/config/configureoptionsdialog.h

@@ -44,6 +44,9 @@ protected:
     void onShredSourceActivated() {
         settingsChangedSlot();
     }
+    void onRaidConfigFilePathActivated() {
+        settingsChangedSlot();
+    }
     void onComboBackendActivated(int);
 
     GeneralPageWidget& generalPageWidget() {