added exit on close option (#362)

* added exit on close option

* Fixed the functionality, changed code style

* Remove trailing white space

src/libtomahawk/TomahawkSettings.cpp

@@ -873,6 +873,20 @@ TomahawkSettings::setCrashReporterEnabled( bool enable )
 }
 
 
+bool
+TomahawkSettings::exitOnClose() const
+{
+    return value( "ui/exitOnClose", false ).toBool();
+}
+
+
+void
+TomahawkSettings::setExitOnClose( bool enable )
+{
+    setValue( "ui/exitOnClose", enable );
+}
+
+
 bool
 TomahawkSettings::songChangeNotificationEnabled() const
 {

src/libtomahawk/TomahawkSettings.h

@@ -163,6 +163,9 @@ public:
     bool crashReporterEnabled() const; /// true by default
     void setCrashReporterEnabled( bool enable );
 
+    bool exitOnClose() const; /// false by default
+    void setExitOnClose( bool enable );
+
     bool songChangeNotificationEnabled() const; /// true by default
     void setSongChangeNotificationEnabled( bool enable );
 

src/tomahawk/TomahawkWindow.cpp

@@ -756,8 +756,16 @@ TomahawkWindow::changeEvent( QEvent* e )
 void
 TomahawkWindow::closeEvent( QCloseEvent* e )
 {
+
+    TomahawkSettings* s = TomahawkSettings::instance();
+
+    if( s->exitOnClose() ){
+        qApp->quit();
+        return;
+    }
+
 #ifndef Q_OS_MAC
-    if ( e->spontaneous() && QSystemTrayIcon::isSystemTrayAvailable() )
+    else if ( e->spontaneous() && QSystemTrayIcon::isSystemTrayAvailable() )
         {
             hide();
             e->ignore();

src/tomahawk/dialogs/SettingsDialog.cpp

@@ -313,6 +313,7 @@ SettingsDialog::saveSettings()
     TomahawkSettings* s = TomahawkSettings::instance();
 
     s->setCrashReporterEnabled( m_advancedWidgetUi->checkBoxReporter->checkState() == Qt::Checked );
+    s->setExitOnClose( m_advancedWidgetUi->checkBoxExitOnClose->checkState() == Qt::Checked );
     s->setHttpEnabled( m_advancedWidgetUi->checkBoxHttp->checkState() == Qt::Checked );
     s->setHttpBindAll( m_advancedWidgetUi->checkBoxListenApi->checkState() == Qt::Checked );
     s->setSongChangeNotificationEnabled( m_advancedWidgetUi->checkBoxSongChangeNotifications->checkState() == Qt::Checked );

src/tomahawk/dialogs/Settings_Advanced.ui

@@ -171,6 +171,19 @@
       <string>Other Settings</string>
      </property>
      <layout class="QVBoxLayout" name="verticalLayout_2">
+    <item>
+       <widget class="QCheckBox" name="checkBoxExitOnClose">
+        <property name="layoutDirection">
+         <enum>Qt::LeftToRight</enum>
+        </property>
+        <property name="text">
+         <string>Exit on close</string>
+        </property>
+        <property name="checked">
+         <bool>false</bool>
+        </property>
+       </widget>
+      </item>
       <item>
        <widget class="QCheckBox" name="checkBoxHttp">
         <property name="layoutDirection">