Handling Enable / Disable menu items (doxywizard)

Only enable menu item "Reset to factory defaults" in case the current settings are different from the default settings.
Only enable "Clear recent list" and "Open recent" in case there are recent files.

addon/doxywizard/doxywizard.cpp

@@ -69,11 +69,11 @@ MainWindow::MainWindow()
                   this, SLOT(quit()), Qt::CTRL+Qt::Key_Q);
 
   QMenu *settings = menuBar()->addMenu(tr("Settings"));
-  settings->addAction(tr("Reset to factory defaults"),
+  m_resetDefault = settings->addAction(tr("Reset to factory defaults"),
                   this,SLOT(resetToDefaults()));
   settings->addAction(tr("Use current settings at startup"),
                   this,SLOT(makeDefaults()));
-  settings->addAction(tr("Clear recent list"),
+  m_clearRecent = settings->addAction(tr("Clear recent list"),
                   this,SLOT(clearRecent()));
 
   QMenu *help = menuBar()->addMenu(tr("Help"));
@@ -379,6 +379,8 @@ void MainWindow::clearRecent()
     {
       m_settings.setValue(QString::fromLatin1("recent/config%1").arg(i++),QString::fromLatin1(""));
     }
+    m_clearRecent->setEnabled(false);
+    m_recentMenu->setEnabled(false);
     m_settings.sync();
   }
 
@@ -396,6 +398,8 @@ void MainWindow::resetToDefaults()
     m_expert->resetToDefaults();
     m_settings.setValue(QString::fromLatin1("wizard/loadsettings"), false);
     m_settings.sync();
+    m_modified = false;
+    updateTitle();
     m_wizard->refresh();
   }
 }
@@ -474,6 +478,9 @@ void MainWindow::addRecentFileList(const QString &fileName)
     m_recentFiles.removeLast();
     m_recentFiles.prepend(fileName);
   }
+  m_clearRecent->setEnabled(m_recentFiles.count()>0);
+  m_recentMenu->setEnabled(m_recentFiles.count()>0);
+  m_settings.sync();
 }
 void MainWindow::updateRecentFile(void)
 {
@@ -488,6 +495,9 @@ void MainWindow::updateRecentFile(void)
   {
     m_settings.setValue(QString::fromLatin1("recent/config%1").arg(i),QString::fromLatin1(""));
   }
+  m_clearRecent->setEnabled(m_recentFiles.count()>0);
+  m_recentMenu->setEnabled(m_recentFiles.count()>0);
+  m_settings.sync();
 }
 
 void MainWindow::openRecent(QAction *action)
@@ -685,6 +695,7 @@ void MainWindow::configChanged()
 void MainWindow::updateTitle()
 {
   QString title = tr("Doxygen GUI frontend");
+  m_resetDefault->setEnabled(m_modified);
   if (m_modified)
   {
     title+=QString::fromLatin1(" +");

addon/doxywizard/doxywizard.h

@@ -94,6 +94,8 @@ class MainWindow : public QMainWindow
     QSettings m_settings;
     QMenu *m_recentMenu;
     QStringList m_recentFiles;
+    QAction *m_resetDefault;
+    QAction *m_clearRecent;
     QProcess *m_runProcess;
     QTimer *m_timer;
     QTabWidget *m_tabs;