Move recent files items to new submenu and add clear recent file function (#2347)

* Add a new submenu ('File > Recent Files') and move recent file actions inside.

* Add a new menu item to the menu of recent files ('Clear List') and delete divider(QAction *recentSeparatorAct) because that is no longer used.

* Added general function to clear Settings value (including cache)

src/MainWindow.cpp

@@ -231,8 +231,11 @@ void MainWindow::init()
         connect(recentFileActs[i], &QAction::triggered, this, &MainWindow::openRecentFile);
     }
     for(int i = 0; i < MaxRecentFiles; ++i)
-        ui->fileMenu->insertAction(ui->fileExitAction, recentFileActs[i]);
-    recentSeparatorAct = ui->fileMenu->insertSeparator(ui->fileExitAction);
+        ui->fileRecentFiles->insertAction(ui->fileExitAction, recentFileActs[i]);
+
+    QAction *clearRecentFilesAction = ui->fileRecentFiles->addAction(tr("Clear List"));
+    ui->fileRecentFiles->insertAction(ui->fileExitAction, clearRecentFilesAction);
+    connect(clearRecentFilesAction, &QAction::triggered, this, &MainWindow::clearRecentFiles);
 
     // Create popup menus
     popupTableMenu = new QMenu(this);
@@ -1624,8 +1627,6 @@ void MainWindow::updateRecentFileActions()
     }
     for (int j = numRecentFiles; j < MaxRecentFiles; ++j)
         recentFileActs[j]->setVisible(false);
-
-    recentSeparatorAct->setVisible(numRecentFiles > 0);
 }
 
 void MainWindow::setCurrentFile(const QString &fileName)
@@ -3434,3 +3435,11 @@ void MainWindow::moveDocksTo(Qt::DockWidgetArea area)
     tabifyDockWidget(ui->dockLog, ui->dockSchema);
     tabifyDockWidget(ui->dockLog, ui->dockRemote);
 }
+
+void MainWindow::clearRecentFiles()
+{
+    Settings::clearValue("General", "recentFileList");
+
+    for(int i=0; i < MaxRecentFiles; ++i)
+        recentFileActs[i]->setVisible(false);
+}

src/MainWindow.h

@@ -82,7 +82,6 @@ private:
 
     static const int MaxRecentFiles = 5;
     QAction *recentFileActs[MaxRecentFiles];
-    QAction *recentSeparatorAct;
 
     EditDialog* editDock;
     PlotDock* plotDock;
@@ -101,6 +100,7 @@ private:
     void clearCompleterModelsFields();
 
     void updateRecentFileActions();
+    void clearRecentFiles();
     void setCurrentFile(const QString& fileName);
     void addToRecentFilesMenu(const QString& filename, bool read_only = false);
     void activateFields(bool enable = true);

src/MainWindow.ui

@@ -174,8 +174,8 @@ You can drag SQL statements from an object row and drop them into other applicat
             <rect>
              <x>0</x>
              <y>0</y>
-             <width>641</width>
-             <height>544</height>
+             <width>639</width>
+             <height>574</height>
             </rect>
            </property>
            <layout class="QFormLayout" name="formLayout">
@@ -744,7 +744,7 @@ You can drag SQL statements from an object row and drop them into other applicat
      <x>0</x>
      <y>0</y>
      <width>1037</width>
-     <height>23</height>
+     <height>22</height>
     </rect>
    </property>
    <widget class="QMenu" name="fileMenu">
@@ -766,11 +766,17 @@ You can drag SQL statements from an object row and drop them into other applicat
      <addaction name="fileExportCSVAction"/>
      <addaction name="fileExportJsonAction"/>
     </widget>
+    <widget class="QMenu" name="fileRecentFiles">
+     <property name="title">
+      <string>Recent Files</string>
+     </property>
+    </widget>
     <addaction name="fileNewAction"/>
     <addaction name="fileNewInMemoryDatabaseAction"/>
     <addaction name="fileOpenAction"/>
     <addaction name="fileOpenReadOnlyAction"/>
     <addaction name="fileAttachAction"/>
+    <addaction name="fileRecentFiles"/>
     <addaction name="fileCloseAction"/>
     <addaction name="separator"/>
     <addaction name="fileSaveAction"/>

src/Settings.cpp

@@ -489,6 +489,15 @@ QColor Settings::getDefaultColorValue(const std::string& group, const std::strin
     return QColor();
 }
 
+void Settings::clearValue(const std::string& group, const std::string& name)
+{
+    QSettings settings(QApplication::organizationName(), QApplication::organizationName());
+    settings.beginGroup(QString::fromStdString(group));
+    settings.remove(QString::fromStdString(name));
+    settings.endGroup();
+    m_hCache.clear();
+}
+
 void Settings::restoreDefaults ()
 {
     QSettings settings(QApplication::organizationName(), QApplication::organizationName());

src/Settings.h

@@ -16,6 +16,7 @@ public:
     };
     static QVariant getValue(const std::string& group, const std::string& name);
     static void setValue(const std::string& group, const std::string& name, const QVariant& value, bool dont_save_to_disk = false);
+    static void clearValue(const std::string& group, const std::string& name);
     static void restoreDefaults();
 
     static void rememberDefaultFontSize(int size) { m_defaultFontSize = size; }