Add 'Exit on last tab closed' option

Closes #539

Author: dail8859

src/NotepadNext/ApplicationSettings.cpp

@@ -44,6 +44,7 @@ CREATE_SETTING(Gui, ShowTabBar, showTabBar, bool, true)
 CREATE_SETTING(Gui, ShowStatusBar, showStatusBar, bool, true)
 
 CREATE_SETTING(Gui, TabsClosable, tabsClosable, bool, true)
+CREATE_SETTING(Gui, ExitOnLastTabClosed, exitOnLastTabClosed, bool, false)
 
 CREATE_SETTING(Gui, CombineSearchResults, combineSearchResults, bool, false)
 

src/NotepadNext/ApplicationSettings.h

@@ -78,6 +78,7 @@ class ApplicationSettings : public QSettings
     DEFINE_SETTING(ShowStatusBar, showStatusBar, bool)
 
     DEFINE_SETTING(TabsClosable, tabsClosable, bool)
+    DEFINE_SETTING(ExitOnLastTabClosed, exitOnLastTabClosed, bool)
 
     DEFINE_SETTING(CombineSearchResults, combineSearchResults, bool)
 

src/NotepadNext/dialogs/MainWindow.cpp

@@ -1041,8 +1041,8 @@ void MainWindow::closeCurrentFile()
 
 void MainWindow::closeFile(ScintillaNext *editor)
 {
-    if (getInitialEditor() != Q_NULLPTR) {
-        // Don't close the last file
+    // Early out. If we aren't exiting on last tab closed, and it exists, there's no point in continuing
+    if (!app->getSettings()->exitOnLastTabClosed() && getInitialEditor() != Q_NULLPTR) {
         return;
     }
 
@@ -1071,9 +1071,14 @@ void MainWindow::closeFile(ScintillaNext *editor)
         editor->close();
     }
 
-    // If the last document was closed, start with a new one
+    // If the last document was closed, figure out what to do next
     if (editorCount() == 0) {
-        newFile();
+        if (app->getSettings()->exitOnLastTabClosed()) {
+            close();
+        }
+        else {
+            newFile();
+        }
     }
 }
 

src/NotepadNext/dialogs/PreferencesDialog.cpp

@@ -63,6 +63,8 @@ PreferencesDialog::PreferencesDialog(ApplicationSettings *settings, QWidget *par
         settings->setTranslation(ui->comboBoxTranslation->itemData(index).toString());
         showApplicationRestartRequired();
     });
+
+    MapSettingToCheckBox(ui->checkBoxExitOnLastTabClosed, &ApplicationSettings::exitOnLastTabClosed, &ApplicationSettings::setExitOnLastTabClosed, &ApplicationSettings::exitOnLastTabClosedChanged);
 }
 
 PreferencesDialog::~PreferencesDialog()

src/NotepadNext/dialogs/PreferencesDialog.ui

@@ -95,6 +95,13 @@
      </item>
     </layout>
    </item>
+   <item>
+    <widget class="QCheckBox" name="checkBoxExitOnLastTabClosed">
+     <property name="text">
+      <string>Exit on last tab closed</string>
+     </property>
+    </widget>
+   </item>
    <item>
     <spacer name="verticalSpacer">
      <property name="orientation">